Spot welding
•Download as PPTX, PDF•
4 likes•3,504 views
This document discusses mechanical properties of spot welded joints of ferrous alloy under static loads. It outlines objectives to study resistance spot welding of cold rolled mild steel sheets, perform experimental tests in a laboratory including tensile, hardness, and impact tests, numerically model the spot welding, and simulate the tests using Ansys software. The results will then be compared.
Report
Share
Report
Share
Recommended
Rheocasting
This seminar report summarizes a study on rheocasting. It defines rheocasting as a process that creates a semi-solid slurry directly from molten metal and pushes it into a mold to freeze, unlike thixocasting which reheats a billet. The report outlines the key steps in rheocasting including slurry generation techniques like stirring, dendrite fragmentation, and pressure waves. It discusses benefits like lower casting pressures/temperatures and disadvantages like needing precise control. In conclusion, the report notes potential applications for rheocasting include replacing permanent molds and producing high-strength or wear-resistant parts.
Powder metallurgy
This document discusses the process of powder metallurgy. It begins by introducing powder metallurgy and some of its advantages over traditional manufacturing methods. The main steps of the powder metallurgy process are then outlined, including powder manufacture through various techniques like atomization, blending to ensure uniformity, compacting the powder under pressure, sintering the compacted powder by heating it below the melting point, and final finishing operations. A variety of end products that can be created using powder metallurgy are listed such as bearings, gears, and regulators.
Spot welding
Spot welding is a metal joining process where two metal surfaces are welded together by resistance heating when a large current is passed through them. The current causes the metal to heat up and melt together. It allows for quick and easy welding of multiple metal sheets simultaneously without filler metals or flames. However, spot welds have lower strength than other weld types and repairs can be difficult. It is commonly used in the automobile industry to join metal car body panels and parts.
Resistance welding
Resistance welding is described as an electric welding process where heat is generated by resistance of the workpieces to electric current in a circuit. Pressure is applied simultaneously with current to produce coalescence. Common resistance welding techniques include spot welding, seam welding, projection welding, and flash butt welding. Spot welding involves passing current through overlapping metal sheets held between electrodes to create nugget welds. Seam and projection welding can continuously weld moving sheets using arrays of electrodes.
Frictional welding
Frictional welding is a solid-state welding process that uses relative motion and high force between two contacting workpieces to generate heat through friction and form a joint. There are different types of frictional welding processes defined by the motion used - linear, rotary, stir, radial, and orbital friction welding. Frictional welding produces joints with low surface impurities and narrow heat-affected zones. It can join similar and dissimilar metals for applications in automotive, aerospace, consumer products, medical, and other industries.
Heat Treatment Process
The document discusses various heat treatment processes including annealing, normalizing, hardening, tempering, and analyzing hardenability. Annealing involves heating material to relieve stresses and improve ductility. Normalizing is similar but involves faster cooling in air to refine grain structure. Hardening increases hardness through rapid quenching from austenitizing temperatures resulting in martensite formation. Tempering improves toughness of hardened steel by reheating to precipitate carbides. Hardenability is measured using the Jominy end quench test and indicates the depth of hardness achieved during quenching.
Resistance spot welding
This document provides an overview of resistance welding, including resistance spot welding, projection welding, and seam welding. It discusses key factors that affect heat generation in resistance welding such as welding time, current, and resistance. The document also examines electrode materials and geometry, welding problems such as expulsion and shunting effects, and mechanical testing of resistance spot welds.
Friction stir welding
friction stir welding is a joining process that has exhibited many advantages over traditional welding process including greatly reducing distortion and eliminating solidification. In this process welding using fiction as the major resource, due to the frictional heating & Mechanical deformation
Recommended
Rheocasting
This seminar report summarizes a study on rheocasting. It defines rheocasting as a process that creates a semi-solid slurry directly from molten metal and pushes it into a mold to freeze, unlike thixocasting which reheats a billet. The report outlines the key steps in rheocasting including slurry generation techniques like stirring, dendrite fragmentation, and pressure waves. It discusses benefits like lower casting pressures/temperatures and disadvantages like needing precise control. In conclusion, the report notes potential applications for rheocasting include replacing permanent molds and producing high-strength or wear-resistant parts.
Powder metallurgy
This document discusses the process of powder metallurgy. It begins by introducing powder metallurgy and some of its advantages over traditional manufacturing methods. The main steps of the powder metallurgy process are then outlined, including powder manufacture through various techniques like atomization, blending to ensure uniformity, compacting the powder under pressure, sintering the compacted powder by heating it below the melting point, and final finishing operations. A variety of end products that can be created using powder metallurgy are listed such as bearings, gears, and regulators.
Spot welding
Spot welding is a metal joining process where two metal surfaces are welded together by resistance heating when a large current is passed through them. The current causes the metal to heat up and melt together. It allows for quick and easy welding of multiple metal sheets simultaneously without filler metals or flames. However, spot welds have lower strength than other weld types and repairs can be difficult. It is commonly used in the automobile industry to join metal car body panels and parts.
Resistance welding
Resistance welding is described as an electric welding process where heat is generated by resistance of the workpieces to electric current in a circuit. Pressure is applied simultaneously with current to produce coalescence. Common resistance welding techniques include spot welding, seam welding, projection welding, and flash butt welding. Spot welding involves passing current through overlapping metal sheets held between electrodes to create nugget welds. Seam and projection welding can continuously weld moving sheets using arrays of electrodes.
Frictional welding
Frictional welding is a solid-state welding process that uses relative motion and high force between two contacting workpieces to generate heat through friction and form a joint. There are different types of frictional welding processes defined by the motion used - linear, rotary, stir, radial, and orbital friction welding. Frictional welding produces joints with low surface impurities and narrow heat-affected zones. It can join similar and dissimilar metals for applications in automotive, aerospace, consumer products, medical, and other industries.
Heat Treatment Process
The document discusses various heat treatment processes including annealing, normalizing, hardening, tempering, and analyzing hardenability. Annealing involves heating material to relieve stresses and improve ductility. Normalizing is similar but involves faster cooling in air to refine grain structure. Hardening increases hardness through rapid quenching from austenitizing temperatures resulting in martensite formation. Tempering improves toughness of hardened steel by reheating to precipitate carbides. Hardenability is measured using the Jominy end quench test and indicates the depth of hardness achieved during quenching.
Resistance spot welding
This document provides an overview of resistance welding, including resistance spot welding, projection welding, and seam welding. It discusses key factors that affect heat generation in resistance welding such as welding time, current, and resistance. The document also examines electrode materials and geometry, welding problems such as expulsion and shunting effects, and mechanical testing of resistance spot welds.
Friction stir welding
friction stir welding is a joining process that has exhibited many advantages over traditional welding process including greatly reducing distortion and eliminating solidification. In this process welding using fiction as the major resource, due to the frictional heating & Mechanical deformation
Advanced Welding Technology
Demand of welding increase of new materials.
-- ceramics and metal matrix composites.
-- High strength low-alloy (HSLA) steels
Lack of skilled labours
Traditional welding techniques are costly
Safety concerns.
Need to improve the total cost effectiveness of the welding
Lalit Yadav
Resistance projection welding
One of the welding processes that used in Engineering field is the resistance projection welding. There are several types of welding processes similar to this, but resistance projection welding has its unique features.
Thanks for the colleagues who give this slides to publish.
Friction stir-welding (2)
This document provides an overview of friction stir welding (FSW), including its principles, setup, materials used, advantages, and applications. Some key points:
- FSW was invented in 1991 as a solid state welding process that generates frictional heat between a rotating tool and materials to be joined, below their melting points.
- It overcomes issues with conventional welding like distortion and defects, and enables welding of materials not possible with fusion welding.
- The FSW setup involves a cylindrical, shouldered tool with a probe that is rotated and plunged into materials to be joined. This generates frictional heat to plasticize the materials without melting.
- FSW produces high strength welds in a wide
Plastic welding
This document discusses different types of plastic welding. It describes five main types: hot gas plastic welding, laser welding, hot plate plastic welding, ultrasonic plastic welding, and friction welding. For each type, it provides details on the welding process and how heat is applied to fuse plastic materials. The document also covers the advantages of plastic welding, such as its speed, cleanliness, and ability to create permanent welds. Disadvantages include the permanence of welds and costs associated with some methods. Applications are in automotive and other industries where plastic welding provides a fast, lightweight joining method.
Friction welding
Friction welding is a solid state joining process that uses mechanical friction to fuse materials together without melting. There are several types of friction welding including spin welding, linear friction welding, friction surfacing, and friction stir welding. The process involves rotating or oscillating one material against another under pressure to generate heat and plasticize the surfaces. Friction welding produces high quality welds with small heat affected zones and without the need for filler metals. It has advantages over other welding methods like lower heat input and cost. However, it is generally limited to flat geometries and small parts.
Trip steel
MOHAMMED AJMAL SHERIFF.F
M.TECH- MANUFACTURING ENGINEERING, B.S ABDUR RAHMAN UNIVERSITY, VANDALUR, CHENNAI
Distortion in welding
This document discusses distortion that can occur during welding processes. It defines distortion as any unwanted physical change to a fabricated structure due to welding. The main causes of distortion are non-uniform expansion/contraction from the welding thermal cycle and internal stresses formed in the base metal. The extent of distortion depends on material properties like thermal expansion and welding factors like process, amount of weld metal, and edge preparation. Different types of distortions like longitudinal, transverse, angular, bending, twisting and buckling are described. Methods to measure and control distortion include welding sequence, fixtures, preheating, and post weld heat treatment. Various materials have a welding suitability index calculated to indicate their distortion sensitivity during welding.
Resistance welding
One of the welding processes that used in Engineering field is the resistance welding. There are several types of welding processes similar to this, but resistance welding has its unique features.
Thanks for the colleagues who give this slides to publish.
Hot Rolling And cold rolling process
This document summarizes the hot rolling and cold rolling processes used in mechanical engineering. It defines key terms like ingot, bloom, slab, and billet. It describes the main steps in hot rolling like heating, rough rolling, and finishing rolling. Advantages of hot rolling include reduced energy usage and improved material properties. Disadvantages are non-metallic inclusions and residual stresses. Cold rolling provides better dimensional control and surface finish but requires more force. Common applications of each process are also outlined.
Tandem welding
Tandem MIG welding uses two welding power sources and wire feeders operating simultaneously to double the welding output. It works by independently controlling the two electrically isolated welding arcs from separate wire electrodes fed through a single torch. This allows different wire feed speeds and independent control of the lead and trail electrodes throughout the welding process to promote stability and deposition rates while maintaining high welding speeds.
Micromachining Technology Seminar Presentation
Micromachining is used to create micrometer-scale parts and devices. It is derived from traditional machining processes but operates on a smaller scale using less force. There are several micromachining processes including micro milling, laser ablation, etching, and lithography that use mechanical forces, lasers, or chemical reactions to shape materials like ceramics, metals, polymers, and silicon. Micromachining is used to fabricate components for microelectromechanical systems, integrated circuits, medical devices, and more.
spot welding
Spot welding is a process that joins metal surfaces by applying heat generated from resistance to electric current flowing between two metal sheets clamped together by electrodes. When a large current passes through the joint, it generates heat due to resistance and melts the metals, fusing them together. The basic steps are to squeeze the sheets together with electrodes, apply an alternating current to generate heat and melt the metals, hold the heat, forge the weld by continuing pressure, then remove pressure to cool. Spot welding is commonly used in automotive manufacturing and other industries due to its speed, not requiring filler metals, and ability to simultaneously weld multiple sheets.
Forging
This document discusses various manufacturing technologies related to forging. It describes forging as a metalworking process involving plastic deformation between dies to achieve a desired shape. Forging can be classified based on the process (open die or closed die) or equipment (drop, power hammer/press, hand, or machine forging). The document outlines the key characteristics and applications of these different forging methods. It also describes various forging tools and common forging operations like upsetting, drawing down, setting down, bending, punching, welding, and cutting.
Plastic welding
The document discusses various methods for plastic welding, including mechanical joining using fasteners, adhesive bonding, and different types of welding. It describes several welding processes such as hot plate welding, hot gas welding, ultrasonic welding, friction welding, and laser welding. These welding methods use heat from external sources like hot plates or internal sources like ultrasonic vibrations to melt the plastic surfaces and join them together. Common applications of plastic welding include pipe assemblies, automotive parts, and food packaging.
Fundamentals of Welding
This document discusses welding processes and includes the following key points:
1) It describes various welding processes including arc, resistance, oxyfuel, electron beam, laser beam, diffusion, friction, and ultrasonic welding.
2) It explains common welding terms and different types of welds including fillet, groove, plug, slot, spot, seam, flange, and surfacing welds.
3) It discusses the physics of welding including concepts of power density, heat balance equations, heat transfer mechanisms, and the different zones that form in a fusion welded joint.
Submerged arc welding
Submerged arc welding is a mechanized welding process where the arc and molten weld are protected from atmospheric contamination by being "submerged" under a blanket of granular fusible flux. It provides high quality welds at high deposition rates without spatter, sparks, or fumes. SAW is commonly used for welding large structures like pressure vessels, ship hulls, and pipelines due to its consistency and efficiency.
WELDING PROCESS
This document provides an overview of welding processes and their principles. It discusses arc welding processes including metallic arc welding, carbon arc welding, and flux shielded metal arc welding. It describes gas welding processes and classifications of welding processes. Key applications of welding are listed across various industries like aircraft construction, automobile construction, bridges, buildings, and more. Advantages and limitations of welding are also summarized.
Heat treatment
This document discusses post weld heat treatment (PWHT). It describes how welding causes residual stresses and microstructural changes in the heat affected zone (HAZ) that can lead to cracking. PWHT involves controlled heating and cooling to relieve residual stresses and improve properties. The key aspects covered include:
- PWHT relieves residual stresses and improves toughness by altering the HAZ microstructure.
- Preheating the metal prior to welding reduces cooling rates and residual stresses. The required preheat temperature depends on material thickness and carbon content.
- Thermal stress relief involves heating to just below the recrystallization temperature to allow stress relaxation. Proper heating and cooling rates are important.
Diffusion bonding
Diffusion bonding is a solid-state welding technique that joins materials together through atomic diffusion without melting. It involves applying high pressure and moderate heat to join carefully cleaned and mated surfaces. Diffusion occurs in two stages - initial metal-to-metal contact formation followed by atomic diffusion and grain growth across the interface to form a complete bond. Various factors like temperature, pressure, time and surface preparation influence the diffusion rate. Common diffusion bonding methods include gas pressure bonding, vacuum fusion bonding and eutectic bonding. Diffusion bonding finds applications in the fabrication of components for industries like aerospace, nuclear and others.
electric resistance welding
Electric resistance welding is a type of pressure welding that uses electric current and mechanical pressure to join metal pieces. Heat is generated at the interface when a current passes through for a short duration. When the area reaches temperature, pressure is applied until the weld solidifies. Common types of electric resistance welding include spot welding, seam welding, and projection welding, which are used to join overlapping metal sheets or wires at high production rates.
V36130135
International Journal of Engineering Research and Applications (IJERA) is an open access online peer reviewed international journal that publishes research and review articles in the fields of Computer Science, Neural Networks, Electrical Engineering, Software Engineering, Information Technology, Mechanical Engineering, Chemical Engineering, Plastic Engineering, Food Technology, Textile Engineering, Nano Technology & science, Power Electronics, Electronics & Communication Engineering, Computational mathematics, Image processing, Civil Engineering, Structural Engineering, Environmental Engineering, VLSI Testing & Low Power VLSI Design etc.
Spot welding final year project of b.sc engineering in metallurgy and materi...
Spot welding final year project of b.sc engineering in metallurgy and materi...University of the Punjab, Lahore, Pakistan
Final Year Project in Punjab University B.Sc Engineering in Metallurgy and Material. Spot Welding, Testing, SEM, More Related Content
What's hot
Advanced Welding Technology
Demand of welding increase of new materials.
-- ceramics and metal matrix composites.
-- High strength low-alloy (HSLA) steels
Lack of skilled labours
Traditional welding techniques are costly
Safety concerns.
Need to improve the total cost effectiveness of the welding
Lalit Yadav
Resistance projection welding
One of the welding processes that used in Engineering field is the resistance projection welding. There are several types of welding processes similar to this, but resistance projection welding has its unique features.
Thanks for the colleagues who give this slides to publish.
Friction stir-welding (2)
This document provides an overview of friction stir welding (FSW), including its principles, setup, materials used, advantages, and applications. Some key points:
- FSW was invented in 1991 as a solid state welding process that generates frictional heat between a rotating tool and materials to be joined, below their melting points.
- It overcomes issues with conventional welding like distortion and defects, and enables welding of materials not possible with fusion welding.
- The FSW setup involves a cylindrical, shouldered tool with a probe that is rotated and plunged into materials to be joined. This generates frictional heat to plasticize the materials without melting.
- FSW produces high strength welds in a wide
Plastic welding
This document discusses different types of plastic welding. It describes five main types: hot gas plastic welding, laser welding, hot plate plastic welding, ultrasonic plastic welding, and friction welding. For each type, it provides details on the welding process and how heat is applied to fuse plastic materials. The document also covers the advantages of plastic welding, such as its speed, cleanliness, and ability to create permanent welds. Disadvantages include the permanence of welds and costs associated with some methods. Applications are in automotive and other industries where plastic welding provides a fast, lightweight joining method.
Friction welding
Friction welding is a solid state joining process that uses mechanical friction to fuse materials together without melting. There are several types of friction welding including spin welding, linear friction welding, friction surfacing, and friction stir welding. The process involves rotating or oscillating one material against another under pressure to generate heat and plasticize the surfaces. Friction welding produces high quality welds with small heat affected zones and without the need for filler metals. It has advantages over other welding methods like lower heat input and cost. However, it is generally limited to flat geometries and small parts.
Trip steel
MOHAMMED AJMAL SHERIFF.F
M.TECH- MANUFACTURING ENGINEERING, B.S ABDUR RAHMAN UNIVERSITY, VANDALUR, CHENNAI
Distortion in welding
This document discusses distortion that can occur during welding processes. It defines distortion as any unwanted physical change to a fabricated structure due to welding. The main causes of distortion are non-uniform expansion/contraction from the welding thermal cycle and internal stresses formed in the base metal. The extent of distortion depends on material properties like thermal expansion and welding factors like process, amount of weld metal, and edge preparation. Different types of distortions like longitudinal, transverse, angular, bending, twisting and buckling are described. Methods to measure and control distortion include welding sequence, fixtures, preheating, and post weld heat treatment. Various materials have a welding suitability index calculated to indicate their distortion sensitivity during welding.
Resistance welding
One of the welding processes that used in Engineering field is the resistance welding. There are several types of welding processes similar to this, but resistance welding has its unique features.
Thanks for the colleagues who give this slides to publish.
Hot Rolling And cold rolling process
This document summarizes the hot rolling and cold rolling processes used in mechanical engineering. It defines key terms like ingot, bloom, slab, and billet. It describes the main steps in hot rolling like heating, rough rolling, and finishing rolling. Advantages of hot rolling include reduced energy usage and improved material properties. Disadvantages are non-metallic inclusions and residual stresses. Cold rolling provides better dimensional control and surface finish but requires more force. Common applications of each process are also outlined.
Tandem welding
Tandem MIG welding uses two welding power sources and wire feeders operating simultaneously to double the welding output. It works by independently controlling the two electrically isolated welding arcs from separate wire electrodes fed through a single torch. This allows different wire feed speeds and independent control of the lead and trail electrodes throughout the welding process to promote stability and deposition rates while maintaining high welding speeds.
Micromachining Technology Seminar Presentation
Micromachining is used to create micrometer-scale parts and devices. It is derived from traditional machining processes but operates on a smaller scale using less force. There are several micromachining processes including micro milling, laser ablation, etching, and lithography that use mechanical forces, lasers, or chemical reactions to shape materials like ceramics, metals, polymers, and silicon. Micromachining is used to fabricate components for microelectromechanical systems, integrated circuits, medical devices, and more.
spot welding
Spot welding is a process that joins metal surfaces by applying heat generated from resistance to electric current flowing between two metal sheets clamped together by electrodes. When a large current passes through the joint, it generates heat due to resistance and melts the metals, fusing them together. The basic steps are to squeeze the sheets together with electrodes, apply an alternating current to generate heat and melt the metals, hold the heat, forge the weld by continuing pressure, then remove pressure to cool. Spot welding is commonly used in automotive manufacturing and other industries due to its speed, not requiring filler metals, and ability to simultaneously weld multiple sheets.
Forging
This document discusses various manufacturing technologies related to forging. It describes forging as a metalworking process involving plastic deformation between dies to achieve a desired shape. Forging can be classified based on the process (open die or closed die) or equipment (drop, power hammer/press, hand, or machine forging). The document outlines the key characteristics and applications of these different forging methods. It also describes various forging tools and common forging operations like upsetting, drawing down, setting down, bending, punching, welding, and cutting.
Plastic welding
The document discusses various methods for plastic welding, including mechanical joining using fasteners, adhesive bonding, and different types of welding. It describes several welding processes such as hot plate welding, hot gas welding, ultrasonic welding, friction welding, and laser welding. These welding methods use heat from external sources like hot plates or internal sources like ultrasonic vibrations to melt the plastic surfaces and join them together. Common applications of plastic welding include pipe assemblies, automotive parts, and food packaging.
Fundamentals of Welding
This document discusses welding processes and includes the following key points:
1) It describes various welding processes including arc, resistance, oxyfuel, electron beam, laser beam, diffusion, friction, and ultrasonic welding.
2) It explains common welding terms and different types of welds including fillet, groove, plug, slot, spot, seam, flange, and surfacing welds.
3) It discusses the physics of welding including concepts of power density, heat balance equations, heat transfer mechanisms, and the different zones that form in a fusion welded joint.
Submerged arc welding
Submerged arc welding is a mechanized welding process where the arc and molten weld are protected from atmospheric contamination by being "submerged" under a blanket of granular fusible flux. It provides high quality welds at high deposition rates without spatter, sparks, or fumes. SAW is commonly used for welding large structures like pressure vessels, ship hulls, and pipelines due to its consistency and efficiency.
WELDING PROCESS
This document provides an overview of welding processes and their principles. It discusses arc welding processes including metallic arc welding, carbon arc welding, and flux shielded metal arc welding. It describes gas welding processes and classifications of welding processes. Key applications of welding are listed across various industries like aircraft construction, automobile construction, bridges, buildings, and more. Advantages and limitations of welding are also summarized.
Heat treatment
This document discusses post weld heat treatment (PWHT). It describes how welding causes residual stresses and microstructural changes in the heat affected zone (HAZ) that can lead to cracking. PWHT involves controlled heating and cooling to relieve residual stresses and improve properties. The key aspects covered include:
- PWHT relieves residual stresses and improves toughness by altering the HAZ microstructure.
- Preheating the metal prior to welding reduces cooling rates and residual stresses. The required preheat temperature depends on material thickness and carbon content.
- Thermal stress relief involves heating to just below the recrystallization temperature to allow stress relaxation. Proper heating and cooling rates are important.
Diffusion bonding
Diffusion bonding is a solid-state welding technique that joins materials together through atomic diffusion without melting. It involves applying high pressure and moderate heat to join carefully cleaned and mated surfaces. Diffusion occurs in two stages - initial metal-to-metal contact formation followed by atomic diffusion and grain growth across the interface to form a complete bond. Various factors like temperature, pressure, time and surface preparation influence the diffusion rate. Common diffusion bonding methods include gas pressure bonding, vacuum fusion bonding and eutectic bonding. Diffusion bonding finds applications in the fabrication of components for industries like aerospace, nuclear and others.
electric resistance welding
Electric resistance welding is a type of pressure welding that uses electric current and mechanical pressure to join metal pieces. Heat is generated at the interface when a current passes through for a short duration. When the area reaches temperature, pressure is applied until the weld solidifies. Common types of electric resistance welding include spot welding, seam welding, and projection welding, which are used to join overlapping metal sheets or wires at high production rates.
What's hot (20)
Similar to Spot welding
V36130135
International Journal of Engineering Research and Applications (IJERA) is an open access online peer reviewed international journal that publishes research and review articles in the fields of Computer Science, Neural Networks, Electrical Engineering, Software Engineering, Information Technology, Mechanical Engineering, Chemical Engineering, Plastic Engineering, Food Technology, Textile Engineering, Nano Technology & science, Power Electronics, Electronics & Communication Engineering, Computational mathematics, Image processing, Civil Engineering, Structural Engineering, Environmental Engineering, VLSI Testing & Low Power VLSI Design etc.
Spot welding final year project of b.sc engineering in metallurgy and materi...
Spot welding final year project of b.sc engineering in metallurgy and materi...University of the Punjab, Lahore, Pakistan
Final Year Project in Punjab University B.Sc Engineering in Metallurgy and Material. Spot Welding, Testing, SEM, A REVIEW ON OPTIMIZATION OF RESISTANCE SPOT WELDING OF ALUMINUM COMPONENTS US...
Resistance Spot welding (RSW) is one of the common welding processes used for sheet joining especially in the automobile and aerospace industry. It is used in a wide range of industries but notably for the assembly of sheet steel vehicle bodies. This is a type of resistance welding where the spot welds are made at regular intervals on overlapping sheets of metal. Spot welding is primarily used for joining parts that are normally up to 3 mm in thickness. The joint quality can be defined in terms of properties such as weld-bead geometry, mechanical properties and distortion.The objective of the research is to determine the optimum combination of parameters responsible for better quality of joints. The complicated behavior of the process must be analyzed to set the optimum parameters to get the optimum weld quality. The paper also presents the FEA simulation of the RSW process.
Thermal stress and surface integrity Modeling in Micro-EDM on Titanium alloy
This document discusses thermal stress and surface integrity modeling in micro-EDM on titanium alloy. It presents the objectives, methodology, literature review and work done so far on the topic. The objectives are to model thermal stress distribution considering temperature dependent properties using FVM and to analyze the machined surface. The literature review covers previous work on thermal modeling and stress analysis in EDM. The methodology involves heat transfer modeling using FVM and stress estimation based on temperature distribution. Work done includes problem formulation, heat flux modeling and developing a 2D stress modeling code.
Fatigue test comparison b/w LM6 Al and MMC of LM6 Al
Study of material fatigue behavior between LM6 grade Aluminum and Metal matrix composite of LM6 Aluminum and fly ash.
ijaerv10n68spl_104
This document summarizes research on friction welding of 4140 steel. Friction welding was used to join cylindrical rods of 4140 steel, which is a chrome-moly steel commonly used in automotive applications. Various welding parameters were tested, including friction pressure, upset pressure, and rotational speed. Tensile tests showed that specimens welded with higher upset pressures and lower differences between upset and friction pressures had higher tensile strengths. Analysis of variance identified upset pressure and friction pressure as significant factors influencing weld strength. The research demonstrated friction welding 4140 steel is feasible and can achieve joint properties comparable to the base metal without requiring post-weld heat treatment.
J021053057
Research Inventy : International Journal of Engineering and Science is published by the group of young academic and industrial researchers with 12 Issues per year. It is an online as well as print version open access journal that provides rapid publication (monthly) of articles in all areas of the subject such as: civil, mechanical, chemical, electronic and computer engineering as well as production and information technology. The Journal welcomes the submission of manuscripts that meet the general criteria of significance and scientific excellence. Papers will be published by rapid process within 20 days after acceptance and peer review process takes only 7 days. All articles published in Research Inventy will be peer-reviewed.
Welding Analysis By Simulation Software
It is the PPT based on welding Analysis By Simulation Software.
#Welding
#welding Simulation
#Simulation Software
Joining technologies of and aluminium spaceframes in automotive in kfueit rah...
Joining technologies of and aluminium spaceframes in automotive in kfueit rahim yar khan
Best Regards,
Tanvir Malik
Mechanical Engineers.
Khawaja Fareed University of Engineering and Information Technology (KFUEIT),
Abhu Dhabi Road, Rahim Yar Khan, Punjab,
Pakistan.
Comparison of Fatigue Characteristic for AISI 1039 Steel with Surface Treatment
Wear and fatigue resistance in steel components used in various industries can be improved by surface treatments. Coatings systems which are used for improving the mechanical properties, generally, decreased the components fatigue life due to micro cracks, that propagate through the substrate , it is possible to improve the fatigue resistance of a component by the application of shot peening treatment, whose compressive residual stresses delay or eliminate the initiation and propagation of fatigue cracks. The aim of this study is to obtain the fatigue limit of untreated, shot peened, and hard chromium coating of medium carbon steel AISI 1039 and comparison between them. Fatigue tests were carried out using small samples with 4 mm diameter, with hard chromium layer of (47.1) µm thick. Rotating-bending fatigue test was carried out on samples after shot peening with steel balls of about 20 minutes peening time. Experimental results showed that hard chromium electroplating decreased the fatigue life and fatigue limit in comparison with the uncoated steel. As the highest thickness for coating was 23µm. On the other hand, Shot peening Results indicated that the fatigue strengths of samples are increased and the highest fatigue limit was (298.566Mpa) after treated the samples by shot peening for 20 minutes.
Good and evil of tribological engineering surfaces
Inaugural lecture for Tomasz Liskiewicz, Professor of Tribology and Surface Engineering, Manchester Metropolitan University, Faculty of Science and Engineering
M044048087
International Journal of Engineering Research and Applications (IJERA) is an open access online peer reviewed international journal that publishes research and review articles in the fields of Computer Science, Neural Networks, Electrical Engineering, Software Engineering, Information Technology, Mechanical Engineering, Chemical Engineering, Plastic Engineering, Food Technology, Textile Engineering, Nano Technology & science, Power Electronics, Electronics & Communication Engineering, Computational mathematics, Image processing, Civil Engineering, Structural Engineering, Environmental Engineering, VLSI Testing & Low Power VLSI Design etc.
Fy2410811087
This document summarizes a study on the effect of process parameters on the strength of resistance spot welded aluminum alloy A5052 sheets with cover plates. The researchers welded 1mm thick aluminum alloy sheets using resistance spot welding with cold-rolled steel cover plates. They investigated the effect of welding current, time, and electrode force on nugget diameter, tensile-shear strength, and failure mode. Increasing welding current and time increased nugget diameter and strength, while increasing electrode force decreased nugget diameter and strength. Hardness was lowest in the nugget region compared to the base metal. Interfacial failure occurred for smaller nuggets and nugget pullout failure for larger nuggets
ME445_Final_Project_presentation
This document outlines a study investigating the effects of surface texture on steel plates sliding on soft tissues. It describes the objectives to reduce tissue damage caused by friction from sliding surgical instruments. The approach involved milling different surface textures into steel plates using a milling machine, with textures varying in cube size and channel size. Friction tests were then conducted by sliding the textured plates under a weighted block and measuring the frictional force. The results showed that increasing the channel size of the surface textures reduced both the adhesive force and dynamic friction. The discussion proposes ways to improve the machining process and testing setup for further studies.
Study of Pitting Corrosion Behavior of FSW weldments of AA6101- T6 Aluminium ...
Friction Stir Welding (FSW) is a promising solid state joining process widely used generally for Al alloys,
especially in aerospace, marine and automobile applications. In present work, the microstructure and corrosion
behavior of friction stir welded AA6101 T6 Al alloy is studied. The friction stir welding was carried using
vertical milling machine with different tool rotational speeds and welding speeds. The microstructure at weld
nugget or stir zone (SN), thermo-mechanically affected zone (TMAZ), heat affected zone (HAZ) and base metal
were observed using optical microscopy. The corrosion tests of base alloy and welded joints were carried out in
3.5% NaCl solution at temperature of 30º C. Corrosion rate and emf were determined using cyclic polarization
measurement.
EXPERIMENTAL EVALUTION OF FRICTION STIR WELDED JOINTS OF
This document summarizes an experimental evaluation of friction stir welded joints between dissimilar aluminum alloy plates. Key points:
- Friction stir welding was used to join AA6063 and AA6082 aluminum alloy plates using tools with and without TiAlN coating.
- Hardness tests and tensile tests were conducted on the welded joints. The welded joints produced using the coated tools showed higher ultimate tensile strength and hardness values compared to the uncoated tools.
- An optimal tool rotation speed of 1400 rpm and welding speed of 28 mm/min produced the highest weld strength. 2000 rpm and 28 mm/min produced the highest hardness values.
Experimental and Fe Analysis of Eccentric Loaded Welded Joint Structure
Arc welded structures are widely used in automobiles, constructions & power plants. As the main cause of weldment failure is design defect & overload, hence it is necessary to analyze the maximum stresses in the weldment. In this project experimentation is carried out on symmetrical and unsymmetrical eccentric loaded welded joint to determine the breaking stress in the weldment. The FE analysis & analytical estimation of breaking stress is also carried out to verify the experimental results. The stress distribution along weld size & throat thickness is evaluated and also compared with reported findings under same loading condition. Further eccentric loaded welded joint is analyzed under eccentric load by varying the gap between parent plates.
Fatigue and fracture behavior of additively manufactured metals after heat tr...
Additive Manufacturing (AM) is any of various processes of making three-dimensional solid objects from a digital file.
Unlike subtractive manufacturing methods that start with a solid block of material and then cut away the excess to create a finished part, additive manufacturing builds up a part (or features onto parts) layer by layer from geometry described in a 3D design model.
For many decades, AM processes have been used for rapid prototyping. Over the last few years, additive manufacturing has gained incredible interest in all industry facets: from aerospace applications to simple one-off consumer home builds. This technology has immense versatility and flexibility, due to its ability to create complex geometries with customizable material properties.
Discover how the additive manufacturing processing of metals makes it possible to design and build lightweight parts in real time and understand potential of heat treatments in vacuum for 3D printed parts.
Improvement of Surface Roughness of Nickel Alloy Specimen by Removing Recast ...
Abstract: In this investigation, experimental work and computational work are combined to obtain improvement in the surface roughness of nickel alloy specimen, the machining is carried out by means of CNC wire electric discharge machining (WEDM). Brass wire is used as the tool electrode and nickel alloy (Inconel600) is used as the work piece material. The machining parameters such as Pulse-On time (Ton), Pulse-Off time (Toff), Peak Current (Ip), and Bed speed are considered as input parameters for this project. Surface roughness and Recast layer are considered the output parameters. The experiments
with the pre-planned set of input parameters are designed based on Taguchi’s orthogonal array. The surface roughness is measured using stylus type roughness tester and the thickness of the Recast layer is measured using Scanning Electron Microscope (SEM). The results obtained from the experiments are fed to the Minitab software and optimum input parameters for the desired output parameters are identified. The software uses the concept of analysis of variance (ANOVA) and indicates the nature of effect of input parameters on the output parameters and confirmation is done by validation
experiments. Once the recast layer thickness is obtained Chemical Etching and abrasive blasting is performed in order to remove the recast layer and again the surface roughness is measured by using stylus type roughness tester. Finally from the obtained results it was found that there was significant improvement in the Surface roughness of the nickel alloy material. In addition using regression analysis this work is stimulated by computational method and the results are obtained
Parametric Optimization on MIG Welded EN8 Material Joints by using Taguchi Me...
Welding is a manufacturing process, which is carried out for joining of metals. By MIG Welding it is possible to weld in all positions. Optimization of the parameter will be carried out by Taguchi method. We will use EN-8 material which is more use in Automobile parts. EN8 plate with dimensions 250mm x 125mm x 6mm with V- Groove 650.Where the input parameters are welding current, Wire feed and gas flow rate and output parameters are tensile strength and Hardness.
Similar to Spot welding (20)
Spot welding final year project of b.sc engineering in metallurgy and materi...
Spot welding final year project of b.sc engineering in metallurgy and materi...
A REVIEW ON OPTIMIZATION OF RESISTANCE SPOT WELDING OF ALUMINUM COMPONENTS US...
A REVIEW ON OPTIMIZATION OF RESISTANCE SPOT WELDING OF ALUMINUM COMPONENTS US...
Thermal stress and surface integrity Modeling in Micro-EDM on Titanium alloy
Thermal stress and surface integrity Modeling in Micro-EDM on Titanium alloy
Fatigue test comparison b/w LM6 Al and MMC of LM6 Al
Fatigue test comparison b/w LM6 Al and MMC of LM6 Al
Joining technologies of and aluminium spaceframes in automotive in kfueit rah...
Joining technologies of and aluminium spaceframes in automotive in kfueit rah...
Comparison of Fatigue Characteristic for AISI 1039 Steel with Surface Treatment
Comparison of Fatigue Characteristic for AISI 1039 Steel with Surface Treatment
Good and evil of tribological engineering surfaces
Good and evil of tribological engineering surfaces
Study of Pitting Corrosion Behavior of FSW weldments of AA6101- T6 Aluminium ...
Study of Pitting Corrosion Behavior of FSW weldments of AA6101- T6 Aluminium ...
EXPERIMENTAL EVALUTION OF FRICTION STIR WELDED JOINTS OF
EXPERIMENTAL EVALUTION OF FRICTION STIR WELDED JOINTS OF
Experimental and Fe Analysis of Eccentric Loaded Welded Joint Structure
Experimental and Fe Analysis of Eccentric Loaded Welded Joint Structure
Fatigue and fracture behavior of additively manufactured metals after heat tr...
Fatigue and fracture behavior of additively manufactured metals after heat tr...
Improvement of Surface Roughness of Nickel Alloy Specimen by Removing Recast ...
Improvement of Surface Roughness of Nickel Alloy Specimen by Removing Recast ...
Parametric Optimization on MIG Welded EN8 Material Joints by using Taguchi Me...
Parametric Optimization on MIG Welded EN8 Material Joints by using Taguchi Me...
Recently uploaded
DESIGN AND MANUFACTURE OF CEILING BOARD USING SAWDUST AND WASTE CARTON MATERI...
The need for ecofriendly materials as building materials in this century cannot be overemphasized
FULL STACK PROGRAMMING - Both Front End and Back End
This ppt gives details about Full Stack Programming and its basics.
Impartiality as per ISO /IEC 17025:2017 Standard
This document provides basic guidelines for imparitallity requirement of ISO 17025. It defines in detial how it is met and wiudhwdih jdhsjdhwudjwkdbjwkdddddddddddkkkkkkkkkkkkkkkkkkkkkkkwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwioiiiiiiiiiiiii uwwwwwwwwwwwwwwwwhe wiqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqq gbbbbbbbbbbbbb owdjjjjjjjjjjjjjjjjjjjj widhi owqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqq uwdhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhwqiiiiiiiiiiiiiiiiiiiiiiiiiiiiw0pooooojjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjj whhhhhhhhhhh wheeeeeeee wihieiiiiii wihe
e qqqqqqqqqqeuwiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiqw dddddddddd cccccccccccccccv s w c r
cdf cb bicbsad ishd d qwkbdwiur e wetwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwww w
dddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddfffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffw
uuuuhhhhhhhhhhhhhhhhhhhhhhhhe qiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii iqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqq eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee qqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccc ccccccccccccccccccccccccccccccccccc bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbu uuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuum
m
m mmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmm m i
g i dijsd sjdnsjd ndjajsdnnsa adjdnawddddddddddddd uw
Determination of Equivalent Circuit parameters and performance characteristic...
Includes the testing of induction motor to draw the circle diagram of induction motor with step wise procedure and calculation for the same. Also explains the working and application of Induction generator
FUNDAMENTALS OF MECHANICAL ENGINEERING.pdf
EMERSON EDUARDO RODRIGUES
EMERSON EDUARDO RODRIGUES
EMERSON EDUARDO RODRIGUES
EMERSON EDUARDO RODRIGUES
EMERSON EDUARDO RODRIGUES
EMERSON EDUARDO RODRIGUES
EMERSON EDUARDO RODRIGUES
EMERSON EDUARDO RODRIGUES
EMERSON EDUARDO RODRIGUES
EMERSON EDUARDO RODRIGUES
EMERSON EDUARDO RODRIGUES
一比一原版(USF毕业证)旧金山大学毕业证如何办理
原件一模一样【微信：95270640】【旧金山大学毕业证USF学位证成绩单】【微信：95270640】（留信学历认证永久存档查询）采用学校原版纸张、特殊工艺完全按照原版一比一制作（包括：隐形水印，阴影底纹，钢印LOGO烫金烫银，LOGO烫金烫银复合重叠，文字图案浮雕，激光镭射，紫外荧光，温感，复印防伪）行业标杆！精益求精，诚心合作，真诚制作！多年品质 ,按需精细制作，24小时接单,全套进口原装设备，十五年致力于帮助留学生解决难题，业务范围有加拿大、英国、澳洲、韩国、美国、新加坡，新西兰等学历材料，包您满意。
【业务选择办理准则】
一、工作未确定，回国需先给父母、亲戚朋友看下文凭的情况，办理一份就读学校的毕业证【微信：95270640】文凭即可
二、回国进私企、外企、自己做生意的情况，这些单位是不查询毕业证真伪的，而且国内没有渠道去查询国外文凭的真假，也不需要提供真实教育部认证。鉴于此，办理一份毕业证【微信：95270640】即可
三、进国企，银行，事业单位，考公务员等等，这些单位是必需要提供真实教育部认证的，办理教育部认证所需资料众多且烦琐，所有材料您都必须提供原件，我们凭借丰富的经验，快捷的绿色通道帮您快速整合材料，让您少走弯路。
留信网认证的作用:
1:该专业认证可证明留学生真实身份【微信：95270640】
2:同时对留学生所学专业登记给予评定
3:国家专业人才认证中心颁发入库证书
4:这个认证书并且可以归档倒地方
5:凡事获得留信网入网的信息将会逐步更新到个人身份内，将在公安局网内查询个人身份证信息后，同步读取人才网入库信息
6:个人职称评审加20分
7:个人信誉贷款加10分
8:在国家人才网主办的国家网络招聘大会中纳入资料，供国家高端企业选择人才
→ 【关于价格问题（保证一手价格）
我们所定的价格是非常合理的，而且我们现在做得单子大多数都是代理和回头客户介绍的所以一般现在有新的单子 我给客户的都是第一手的代理价格，因为我想坦诚对待大家 不想跟大家在价格方面浪费时间
对于老客户或者被老客户介绍过来的朋友，我们都会适当给一些优惠。
选择实体注册公司办理，更放心，更安全！我们的承诺：可来公司面谈，可签订合同，会陪同客户一起到教育部认证窗口递交认证材料，客户在教育部官方认证查询网站查询到认证通过结果后付款，不成功不收费！
办理旧金山大学毕业证毕业证学位证USF学位证【微信：95270640 】外观非常精致，由特殊纸质材料制成，上面印有校徽、校名、毕业生姓名、专业等信息。
办理旧金山大学毕业证USF学位证毕业证学位证【微信：95270640 】格式相对统一，各专业都有相应的模板。通常包括以下部分：
校徽：象征着学校的荣誉和传承。
校名:学校英文全称
授予学位：本部分将注明获得的具体学位名称。
毕业生姓名：这是最重要的信息之一，标志着该证书是由特定人员获得的。
颁发日期：这是毕业正式生效的时间，也代表着毕业生学业的结束。
其他信息：根据不同的专业和学位，可能会有一些特定的信息或章节。
办理旧金山大学毕业证毕业证学位证USF学位证【微信：95270640 】价值很高，需要妥善保管。一般来说，应放置在安全、干燥、防潮的地方，避免长时间暴露在阳光下。如需使用，最好使用复印件而不是原件，以免丢失。
综上所述，办理旧金山大学毕业证毕业证学位证USF学位证【微信：95270640 】是证明身份和学历的高价值文件。外观简单庄重，格式统一，包括重要的个人信息和发布日期。对持有人来说，妥善保管是非常重要的。
Sri Guru Hargobind Ji - Bandi Chor Guru.pdf
Sri Guru Hargobind Ji (19 June 1595 - 3 March 1644) is revered as the Sixth Nanak.
• On 25 May 1606 Guru Arjan nominated his son Sri Hargobind Ji as his successor. Shortly
afterwards, Guru Arjan was arrested, tortured and killed by order of the Mogul Emperor
Jahangir.
• Guru Hargobind's succession ceremony took place on 24 June 1606. He was barely
eleven years old when he became 6th Guru.
• As ordered by Guru Arjan Dev Ji, he put on two swords, one indicated his spiritual
authority (PIRI) and the other, his temporal authority (MIRI). He thus for the first time
initiated military tradition in the Sikh faith to resist religious persecution, protect
people’s freedom and independence to practice religion by choice. He transformed
Sikhs to be Saints and Soldier.
• He had a long tenure as Guru, lasting 37 years, 9 months and 3 days
Accident detection system project report.pdf
The Rapid growth of technology and infrastructure has made our lives easier. The
advent of technology has also increased the traffic hazards and the road accidents take place
frequently which causes huge loss of life and property because of the poor emergency facilities.
Many lives could have been saved if emergency service could get accident information and
reach in time. Our project will provide an optimum solution to this draw back. A piezo electric
sensor can be used as a crash or rollover detector of the vehicle during and after a crash. With
signals from a piezo electric sensor, a severe accident can be recognized. According to this
project when a vehicle meets with an accident immediately piezo electric sensor will detect the
signal or if a car rolls over. Then with the help of GSM module and GPS module, the location
will be sent to the emergency contact. Then after conforming the location necessary action will
be taken. If the person meets with a small accident or if there is no serious threat to anyone’s
life, then the alert message can be terminated by the driver by a switch provided in order to
avoid wasting the valuable time of the medical rescue team.
ELS: 2.4.1 POWER ELECTRONICS Course objectives: This course will enable stude...
Introduction - Applications of Power Electronics, Power Semiconductor Devices, Control Characteristics of Power Devices, types of Power Electronic Circuits. Power Transistors: Power BJTs: Steady state characteristics. Power MOSFETs: device operation, switching characteristics, IGBTs: device operation, output and transfer characteristics.
Thyristors - Introduction, Principle of Operation of SCR, Static Anode- Cathode Characteristics of SCR, Two transistor model of SCR, Gate Characteristics of SCR, Turn-ON Methods, Turn-OFF Mechanism, Turn-OFF Methods: Natural and Forced Commutation – Class A and Class B types, Gate Trigger Circuit: Resistance Firing Circuit, Resistance capacitance firing circuit.
一比一原版(uofo毕业证书)美国俄勒冈大学毕业证如何办理
原版一模一样【微信：741003700 】【(uofo毕业证书)美国俄勒冈大学毕业证成绩单】【微信：741003700 】学位证，留信认证（真实可查，永久存档）原件一模一样纸张工艺/offer、雅思、外壳等材料/诚信可靠,可直接看成品样本，帮您解决无法毕业带来的各种难题！外壳，原版制作，诚信可靠，可直接看成品样本。行业标杆！精益求精，诚心合作，真诚制作！多年品质 ,按需精细制作，24小时接单,全套进口原装设备。十五年致力于帮助留学生解决难题，包您满意。
本公司拥有海外各大学样板无数，能完美还原。
1:1完美还原海外各大学毕业材料上的工艺：水印，阴影底纹，钢印LOGO烫金烫银，LOGO烫金烫银复合重叠。文字图案浮雕、激光镭射、紫外荧光、温感、复印防伪等防伪工艺。材料咨询办理、认证咨询办理请加学历顾问Q/微741003700
【主营项目】
一.毕业证【q微741003700】成绩单、使馆认证、教育部认证、雅思托福成绩单、学生卡等！
二.真实使馆公证(即留学回国人员证明,不成功不收费)
三.真实教育部学历学位认证（教育部存档！教育部留服网站永久可查）
四.办理各国各大学文凭(一对一专业服务,可全程监控跟踪进度)
如果您处于以下几种情况：
◇在校期间，因各种原因未能顺利毕业……拿不到官方毕业证【q/微741003700】
◇面对父母的压力，希望尽快拿到；
◇不清楚认证流程以及材料该如何准备；
◇回国时间很长，忘记办理；
◇回国马上就要找工作，办给用人单位看；
◇企事业单位必须要求办理的
◇需要报考公务员、购买免税车、落转户口
◇申请留学生创业基金
留信网认证的作用:
1:该专业认证可证明留学生真实身份
2:同时对留学生所学专业登记给予评定
3:国家专业人才认证中心颁发入库证书
4:这个认证书并且可以归档倒地方
5:凡事获得留信网入网的信息将会逐步更新到个人身份内，将在公安局网内查询个人身份证信息后，同步读取人才网入库信息
6:个人职称评审加20分
7:个人信誉贷款加10分
8:在国家人才网主办的国家网络招聘大会中纳入资料，供国家高端企业选择人才
办理(uofo毕业证书)美国俄勒冈大学毕业证【微信：741003700 】外观非常简单，由纸质材料制成，上面印有校徽、校名、毕业生姓名、专业等信息。
办理(uofo毕业证书)美国俄勒冈大学毕业证【微信：741003700 】格式相对统一，各专业都有相应的模板。通常包括以下部分：
校徽：象征着学校的荣誉和传承。
校名:学校英文全称
授予学位：本部分将注明获得的具体学位名称。
毕业生姓名：这是最重要的信息之一，标志着该证书是由特定人员获得的。
颁发日期：这是毕业正式生效的时间，也代表着毕业生学业的结束。
其他信息：根据不同的专业和学位，可能会有一些特定的信息或章节。
办理(uofo毕业证书)美国俄勒冈大学毕业证【微信：741003700 】价值很高，需要妥善保管。一般来说，应放置在安全、干燥、防潮的地方，避免长时间暴露在阳光下。如需使用，最好使用复印件而不是原件，以免丢失。
综上所述，办理(uofo毕业证书)美国俄勒冈大学毕业证【微信：741003700 】是证明身份和学历的高价值文件。外观简单庄重，格式统一，包括重要的个人信息和发布日期。对持有人来说，妥善保管是非常重要的。
一比一原版(osu毕业证书)美国俄勒冈州立大学毕业证如何办理
原版一模一样【微信：741003700 】【(osu毕业证书)美国俄勒冈州立大学毕业证成绩单】【微信：741003700 】学位证，留信认证（真实可查，永久存档）原件一模一样纸张工艺/offer、雅思、外壳等材料/诚信可靠,可直接看成品样本，帮您解决无法毕业带来的各种难题！外壳，原版制作，诚信可靠，可直接看成品样本。行业标杆！精益求精，诚心合作，真诚制作！多年品质 ,按需精细制作，24小时接单,全套进口原装设备。十五年致力于帮助留学生解决难题，包您满意。
本公司拥有海外各大学样板无数，能完美还原。
1:1完美还原海外各大学毕业材料上的工艺：水印，阴影底纹，钢印LOGO烫金烫银，LOGO烫金烫银复合重叠。文字图案浮雕、激光镭射、紫外荧光、温感、复印防伪等防伪工艺。材料咨询办理、认证咨询办理请加学历顾问Q/微741003700
【主营项目】
一.毕业证【q微741003700】成绩单、使馆认证、教育部认证、雅思托福成绩单、学生卡等！
二.真实使馆公证(即留学回国人员证明,不成功不收费)
三.真实教育部学历学位认证（教育部存档！教育部留服网站永久可查）
四.办理各国各大学文凭(一对一专业服务,可全程监控跟踪进度)
如果您处于以下几种情况：
◇在校期间，因各种原因未能顺利毕业……拿不到官方毕业证【q/微741003700】
◇面对父母的压力，希望尽快拿到；
◇不清楚认证流程以及材料该如何准备；
◇回国时间很长，忘记办理；
◇回国马上就要找工作，办给用人单位看；
◇企事业单位必须要求办理的
◇需要报考公务员、购买免税车、落转户口
◇申请留学生创业基金
留信网认证的作用:
1:该专业认证可证明留学生真实身份
2:同时对留学生所学专业登记给予评定
3:国家专业人才认证中心颁发入库证书
4:这个认证书并且可以归档倒地方
5:凡事获得留信网入网的信息将会逐步更新到个人身份内，将在公安局网内查询个人身份证信息后，同步读取人才网入库信息
6:个人职称评审加20分
7:个人信誉贷款加10分
8:在国家人才网主办的国家网络招聘大会中纳入资料，供国家高端企业选择人才
办理(osu毕业证书)美国俄勒冈州立大学毕业证【微信：741003700 】外观非常简单，由纸质材料制成，上面印有校徽、校名、毕业生姓名、专业等信息。
办理(osu毕业证书)美国俄勒冈州立大学毕业证【微信：741003700 】格式相对统一，各专业都有相应的模板。通常包括以下部分：
校徽：象征着学校的荣誉和传承。
校名:学校英文全称
授予学位：本部分将注明获得的具体学位名称。
毕业生姓名：这是最重要的信息之一，标志着该证书是由特定人员获得的。
颁发日期：这是毕业正式生效的时间，也代表着毕业生学业的结束。
其他信息：根据不同的专业和学位，可能会有一些特定的信息或章节。
办理(osu毕业证书)美国俄勒冈州立大学毕业证【微信：741003700 】价值很高，需要妥善保管。一般来说，应放置在安全、干燥、防潮的地方，避免长时间暴露在阳光下。如需使用，最好使用复印件而不是原件，以免丢失。
综上所述，办理(osu毕业证书)美国俄勒冈州立大学毕业证【微信：741003700 】是证明身份和学历的高价值文件。外观简单庄重，格式统一，包括重要的个人信息和发布日期。对持有人来说，妥善保管是非常重要的。
Beckhoff Programmable Logic Control Overview Presentation
This presentation is to describe the overview of PLC Beckhoff for beginners
Butterfly Valves Manufacturer (LBF Series).pdf
We have designed & manufacture the Lubi Valves LBF series type of Butterfly Valves for General Utility Water applications as well as for HVAC applications.
Prediction of Electrical Energy Efficiency Using Information on Consumer's Ac...
Energy efficiency has been important since the latter part of the last century. The main object of this survey is to determine the energy efficiency knowledge among consumers. Two separate districts in Bangladesh are selected to conduct the survey on households and showrooms about the energy and seller also. The survey uses the data to find some regression equations from which it is easy to predict energy efficiency knowledge. The data is analyzed and calculated based on five important criteria. The initial target was to find some factors that help predict a person's energy efficiency knowledge. From the survey, it is found that the energy efficiency awareness among the people of our country is very low. Relationships between household energy use behaviors are estimated using a unique dataset of about 40 households and 20 showrooms in Bangladesh's Chapainawabganj and Bagerhat districts. Knowledge of energy consumption and energy efficiency technology options is found to be associated with household use of energy conservation practices. Household characteristics also influence household energy use behavior. Younger household cohorts are more likely to adopt energy-efficient technologies and energy conservation practices and place primary importance on energy saving for environmental reasons. Education also influences attitudes toward energy conservation in Bangladesh. Low-education households indicate they primarily save electricity for the environment while high-education households indicate they are motivated by environmental concerns.
Ericsson LTE Throughput Troubleshooting Techniques.ppt
Ericsson LTE Throughput Troubleshooting Techniques
Tools & Techniques for Commissioning and Maintaining PV Systems W-Animations ...
Join us for this solutions-based webinar on the tools and techniques for commissioning and maintaining PV Systems. In this session, we'll review the process of building and maintaining a solar array, starting with installation and commissioning, then reviewing operations and maintenance of the system. This course will review insulation resistance testing, I-V curve testing, earth-bond continuity, ground resistance testing, performance tests, visual inspections, ground and arc fault testing procedures, and power quality analysis.
Fluke Solar Application Specialist Will White is presenting on this engaging topic:
Will has worked in the renewable energy industry since 2005, first as an installer for a small east coast solar integrator before adding sales, design, and project management to his skillset. In 2022, Will joined Fluke as a solar application specialist, where he supports their renewable energy testing equipment like IV-curve tracers, electrical meters, and thermal imaging cameras. Experienced in wind power, solar thermal, energy storage, and all scales of PV, Will has primarily focused on residential and small commercial systems. He is passionate about implementing high-quality, code-compliant installation techniques.
Recently uploaded (20)
DESIGN AND MANUFACTURE OF CEILING BOARD USING SAWDUST AND WASTE CARTON MATERI...
DESIGN AND MANUFACTURE OF CEILING BOARD USING SAWDUST AND WASTE CARTON MATERI...
FULL STACK PROGRAMMING - Both Front End and Back End
FULL STACK PROGRAMMING - Both Front End and Back End
Determination of Equivalent Circuit parameters and performance characteristic...
Determination of Equivalent Circuit parameters and performance characteristic...
ELS: 2.4.1 POWER ELECTRONICS Course objectives: This course will enable stude...
ELS: 2.4.1 POWER ELECTRONICS Course objectives: This course will enable stude...
Beckhoff Programmable Logic Control Overview Presentation
Beckhoff Programmable Logic Control Overview Presentation
Prediction of Electrical Energy Efficiency Using Information on Consumer's Ac...
Prediction of Electrical Energy Efficiency Using Information on Consumer's Ac...
Ericsson LTE Throughput Troubleshooting Techniques.ppt
Ericsson LTE Throughput Troubleshooting Techniques.ppt
Tools & Techniques for Commissioning and Maintaining PV Systems W-Animations ...
Tools & Techniques for Commissioning and Maintaining PV Systems W-Animations ...
SENTIMENT ANALYSIS ON PPT AND Project template_.pptx
SENTIMENT ANALYSIS ON PPT AND Project template_.pptx
Spot welding
- 1. Mechanical properties of spot welded joints of ferrous alloy under static loads CREATED BY: MINHAZUR RAHMAN ID: 1003065
- 2. Objectives: Studying resistance spot welding for SPCC (Cold Rolled Mild Steel Sheet). Performing different experimental tests facilitated in laboratory. Numerical modeling of the spot welding. Running simulation for the tests using Ansys software. Compare the results obtained.
- 3. Introduction: Resistance spot welding is a welding process in which contacting metal surfaces are joined by the heat obtained from resistance to electric current. The most common applications of spot welding are in the automobile manufacturing industry, orthodontist’s clinic, making battery cells etc. Resistance spot welding offers much cleaner and faster weld than other conventional welding process. This process is most preferable for welding sheets in 0.5 to 3mm thickness range.
- 4. Methodology: Specimen preparation: First a couple of test specimen of SPCC (say 200mm×50mm) has to be prepared. The specimen surface has to be as smooth as possible. Spot welding: After preparing the test specimen, Resistance spot welding has to be carried out.
- 5. Experiments: Tensile test Hardness test Impact test Numerical Modeling & Simulation: After conducting the experiments the next step is to create a model of the welding specimen. Then simulations need to be run for the similar test conducted in the experimental section.
- 6. Conclusion: Resistance spot welding is one of the widely used welding processes. It is mostly used to build automobile, aircraft and lots of other machine bodies. Hence, further study on this topic will be of a great advantage in the field of industrial manufacturing. References: www.wikipedia.org/wiki/spot_welding www.howstuffworks.com/spot_welding