The International Journal of Engineering & Science is aimed at providing a platform for researchers, engineers, scientists, or educators to publish their original research results, to exchange new ideas, to disseminate information in innovative designs, engineering experiences and technological skills. It is also the Journal's objective to promote engineering and technology education. All papers submitted to the Journal will be blind peer-reviewed. Only original articles will be published.
The papers for publication in The International Journal of Engineering& Science are selected through rigorous peer reviews to ensure originality, timeliness, relevance, and readability.
Theoretical work submitted to the Journal should be original in its motivation or modeling structure. Empirical analysis should be based on a theoretical framework and should be capable of replication. It is expected that all materials required for replication (including computer programs and data sets) should be available upon request to the authors.
The International Journal of Engineering & Science would take much care in making your article published without much delay with your kind cooperation.
IRJET- Design Development and Analysis of Low Pressure Bladeless TurbineIRJET Journal
This document discusses the design, development, and analysis of a bladeless turbine. It begins by providing background on Tesla turbines, which use boundary layer effects rather than blades. The proposed design aims to recover low pressure energy in process industries as an alternative to using throttle valves.
The design process is divided into system design and mechanical design. System design parameters like component arrangement and interaction with operators are considered. Mechanical design involves analyzing forces and selecting materials. Applications discussed include using compressed air/steam as a power source, waste pumps, and centrifugal blood pumps. The document concludes that the project helped apply engineering concepts to practical problems and learn teamwork skills.
3 d modeling and dynamic charectarization of steam turbine packet blade and c...eSAT Publishing House
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology.
IRJET- Design and Development of Pneumatic Punching MachineIRJET Journal
The document describes the design and development of a pneumatic punching machine. It uses compressed air to generate high pressure that is applied to a piston. A solenoid valve controls the direction of air flow into and out of the cylinder. Polyurethane tubes transmit pressure from the pneumatic cylinder to the punch assembly. When the punch descends via high air pressure, it causes plastic deformation of the sheet material. The machine is more economical than hydraulic options as it uses inexpensive compressed air instead of hydraulic fluid.
Vibration analysis and diagnostics for oil production units by pumping rodeSAT Journals
Abstract Operating status of equipment can be appreciated in mechanical vibration analysis products and their parameters change over time. The paper presents methods of making a real analysis of oil extraction plant and how to interpret the results. Index Terms:analysis, structure, vibration
Vibration analysis and diagnostics for oil production units by pumping rodeSAT Publishing House
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology.
Experimental Analysis of Vibration Control in Boring Operation using Passive ...IRJET Journal
This document summarizes an experimental study on using passive dampers to control vibration during boring operations. Boring bars are prone to chatter vibrations due to their cantilever shape. Nylon and Teflon dampers were inserted onto boring bars to reduce displacement, temperature, and tool wear. Experiments were conducted varying cutting speed, depth of cut, and feed rate. Vibration, temperature, and surface roughness were measured with and without dampers. Results showed that both Nylon and Teflon dampers significantly reduced acceleration compared to without dampers, with Teflon generally performing best. The dampers improved damping and helped minimize vibration-related issues during boring.
Performance Analysis of Increased Safety HT Induction Motor with Higher Stato...ijeei-iaes
This document describes the design and performance analysis of increased safety high tension (HT) induction motors with a higher stator coil pitch for use in hazardous areas. Three HT induction motors rated at 810KW, 970KW, and 2200KW were analyzed both with their original design and with an increased stator coil pitch. Increasing the coil pitch was found to increase the effective number of turns, reducing starting current and increasing the time tE and IA/IN ratio. These parameters are important for explosion safety. The temperature rise, performance characteristics, and tests of the motors were compared between the normal and increased coil pitch designs. Increasing the coil pitch was found to improve the safety parameters of the motors without changing their frame size
Experimental Validation of Vibration Characteristics of Selected Centrifugal ...IRJET Journal
This document presents an experimental study on the vibration characteristics of a selected centrifugal pump. It begins with an introduction to pump vibrations and their causes. Next, it describes the methodology which includes measuring existing vibration levels, developing methods to reduce vibration, and experimenting with different isolation methods. Experimental results show that a grooved circular isolator is most effective at reducing vibration amplitudes while also increasing the first fundamental frequency to avoid resonance conditions. The conclusions determine that a grooved isolator is recommended for use with centrifugal pumps to minimize vibrations.
IRJET- Design Development and Analysis of Low Pressure Bladeless TurbineIRJET Journal
This document discusses the design, development, and analysis of a bladeless turbine. It begins by providing background on Tesla turbines, which use boundary layer effects rather than blades. The proposed design aims to recover low pressure energy in process industries as an alternative to using throttle valves.
The design process is divided into system design and mechanical design. System design parameters like component arrangement and interaction with operators are considered. Mechanical design involves analyzing forces and selecting materials. Applications discussed include using compressed air/steam as a power source, waste pumps, and centrifugal blood pumps. The document concludes that the project helped apply engineering concepts to practical problems and learn teamwork skills.
3 d modeling and dynamic charectarization of steam turbine packet blade and c...eSAT Publishing House
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology.
IRJET- Design and Development of Pneumatic Punching MachineIRJET Journal
The document describes the design and development of a pneumatic punching machine. It uses compressed air to generate high pressure that is applied to a piston. A solenoid valve controls the direction of air flow into and out of the cylinder. Polyurethane tubes transmit pressure from the pneumatic cylinder to the punch assembly. When the punch descends via high air pressure, it causes plastic deformation of the sheet material. The machine is more economical than hydraulic options as it uses inexpensive compressed air instead of hydraulic fluid.
Vibration analysis and diagnostics for oil production units by pumping rodeSAT Journals
Abstract Operating status of equipment can be appreciated in mechanical vibration analysis products and their parameters change over time. The paper presents methods of making a real analysis of oil extraction plant and how to interpret the results. Index Terms:analysis, structure, vibration
Vibration analysis and diagnostics for oil production units by pumping rodeSAT Publishing House
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology.
Experimental Analysis of Vibration Control in Boring Operation using Passive ...IRJET Journal
This document summarizes an experimental study on using passive dampers to control vibration during boring operations. Boring bars are prone to chatter vibrations due to their cantilever shape. Nylon and Teflon dampers were inserted onto boring bars to reduce displacement, temperature, and tool wear. Experiments were conducted varying cutting speed, depth of cut, and feed rate. Vibration, temperature, and surface roughness were measured with and without dampers. Results showed that both Nylon and Teflon dampers significantly reduced acceleration compared to without dampers, with Teflon generally performing best. The dampers improved damping and helped minimize vibration-related issues during boring.
Performance Analysis of Increased Safety HT Induction Motor with Higher Stato...ijeei-iaes
This document describes the design and performance analysis of increased safety high tension (HT) induction motors with a higher stator coil pitch for use in hazardous areas. Three HT induction motors rated at 810KW, 970KW, and 2200KW were analyzed both with their original design and with an increased stator coil pitch. Increasing the coil pitch was found to increase the effective number of turns, reducing starting current and increasing the time tE and IA/IN ratio. These parameters are important for explosion safety. The temperature rise, performance characteristics, and tests of the motors were compared between the normal and increased coil pitch designs. Increasing the coil pitch was found to improve the safety parameters of the motors without changing their frame size
Experimental Validation of Vibration Characteristics of Selected Centrifugal ...IRJET Journal
This document presents an experimental study on the vibration characteristics of a selected centrifugal pump. It begins with an introduction to pump vibrations and their causes. Next, it describes the methodology which includes measuring existing vibration levels, developing methods to reduce vibration, and experimenting with different isolation methods. Experimental results show that a grooved circular isolator is most effective at reducing vibration amplitudes while also increasing the first fundamental frequency to avoid resonance conditions. The conclusions determine that a grooved isolator is recommended for use with centrifugal pumps to minimize vibrations.
A Review on an Effective Implementation of Particle Impact Damper to Suppress...IRJET Journal
This document provides a review of particle impact damping techniques used to suppress vibrations in various applications. Particle impact damping involves attaching an impact mass containing particles to a vibrating structure. Vibrational energy is dissipated through impacts between the particles and main structure. The review discusses how particle impact dampers have been used effectively in applications like robots, aircraft, bridges, machine tools and other lightly damped structures to reduce undesirable vibrations. It also summarizes several studies that investigated using particle impact damping to improve damping in structures like robot arms, drilling tools, bridge pylons and communication towers. The studies found impact damping can provide effective attenuation of vibrations over a wide range of frequencies and environments.
VIBRATION LEVEL OPTIMIZATION OF LATHE MACHINE BY CONSIDERING NONLINEARITIES I...ijiert bestjournal
This document discusses vibration isolation methods for reducing noise and vibration in machines. It provides an overview of previous research on analyzing vibration levels in machines like lathe machines and blowers, and developing vibration isolators using materials like viscoelastic pads. The document reviews studies on modeling and designing nonlinear vibration isolators, and analyzing the effects of parameters like temperature on isolator performance. It concludes that vibration pads made of viscoelastic materials are effective and low-cost methods for vibration isolation in machines.
1. The document describes the design, development, and testing of a new hydraulic engine mount for vibration isolation in agricultural applications.
2. A new configuration of hydraulic engine mount is designed that uses a piston and cylinder, reservoir, spring, and hydraulic oil for passive damping. It can also be made active using a solenoid actuator.
3. Testing of the hydraulic engine mount was done using an FFT analyzer to measure vibration parameters. Results showed the designed mount provided better vibration isolation than conventional rubber mounts.
This document describes the design of a multipurpose pesticides sprayer pump. It aims to reduce the effort required for spraying pesticides and allow spraying in any direction around crops. The design includes a trolley frame to support the system, a storage tank, reciprocating pump, and multiple nozzles. The pump is designed to provide adequate pressure through analyzing system parameters like power required, swept volume, and discharge rate. The sprayer pump allows for both spraying pesticides and removing weeds, covering more area in less time compared to traditional backpack sprayers. It is an affordable and ergonomic option for small-scale farmers.
IRJET- Development of Actively Tuned Vibration Absorber for Washing MachineIRJET Journal
This document describes research into developing an actively tuned vibration absorber for washing machines. It begins with background on vibration absorbers and how they work by adding an extra mass-spring-damper system to reduce vibrations. The researchers aim to create a vibration absorber that can retune itself in response to changing excitation frequencies. They model a washing machine drum in CAD software and conduct modal and harmonic analyses in ANSYS to determine natural frequencies and vibration responses. Calculations are shown for selecting absorber mass and spring properties to match the drum's natural frequency range during spinning. The absorber is modelled attached to the washing machine for further analysis. The research aims to reduce washing machine vibrations through an integrated, self-tuning absor
Performance Monitoring of Vibration in Belt Conveyor SystemIJERA Editor
We are always using some kind of machines in our daily life starting from fan, refrigerator and washing machines at home. In case of industries of industrial machinery items condition monitoring is important to know onset impending defects. There are so many types of indicating phenomenon such as vibration, heat, debris in oil, noise and sounds which emanate from these in efficiently running machines. This paper presents the vibration related fault identification and maintenance of belt conveyor systems (BCS). After analyzing the spectrum and vibration readings, it was observed that a combination of parallel and angular misalignment between motor & gear box was present causing high axial and radial vibration. The defect was rectified by mechanical maintenance activities and latter the vibration was found reduced within limit. Also the vibration readings were taken after rectification. The above results are presented in this paper.
Modeling & Analysis of Centrifugal Blower using Composite MaterialIOSR Journals
Centrifugal blowers are used extensively for on-board naval applications which have high noise levels. The noise generated by a rotating component is mainly due to random loading force on the blades and periodic iteration of incoming air with the blades of the rotor. The Contemporary blades in naval applications are made up of Aluminium or Steel and generate noise that causes disturbance to the people working near the blower. The present work aims at observing the choice of E-Glass as an alternative to metal for better vibration control. E-Glass, known for their superior damping characteristics are more promising in vibration reduction compared to metals. The modeling of the blower was done by CATIA V5 R19. The blower is meshed with a three dimensional hex8 mesh is done using HYPERMESH 10. It is proposed to design blower with Epoxy glass, analyze its strength and deformation using FEM technique. In order to evaluate the effectiveness of E-Glass and metal blower using FEA packaged (ANSYS). Modal analysis is performed on both Aluminium and E-Glass blower to find out first five natural frequencies
Design out maintenance on frequent failure of motor ball bearings-2-3IAEME Publication
The document summarizes a case study on implementing design-out maintenance (DOM) on a pump-motor set with frequent bearing failures. [1] Initial failure analysis found the mean time to failure of the bearings was 37 days, with annual failure costs of INR 355,000. [2] On-site and off-site inspections identified excessive bearing pre-load and high vibration levels as likely causes. [3] Corrective actions including adjusting bearing fits and alignment increased the mean time to failure to over 2066 days, significantly reducing failure costs.
IRJET-Design and Analysis Of Shock AbsorberIRJET Journal
This document summarizes the design and analysis of a shock absorber. It discusses:
1) Designing the shock absorber components like the upper mount, bottom mount, oil pad, and rod in CATIA.
2) Conducting structural and modal analysis in ANSYS to determine stresses and displacements using different spring materials - titanium alloy, phosphor bronze, beryllium copper, and spring steel.
3) The results show titanium alloy has the least stress intensity and maximum displacement, making it the best material for the spring. Modifying the design by reducing the spring diameter further lowers stresses and displacements.
This document describes the design and analysis of a shock absorber. It discusses modeling a shock absorber in CATIA V5 and performing structural and modal analyses in ANSYS. Calculations are shown for designing a helical spring for the shock absorber. The shock absorber components are designed, including the upper mount, bottom mount, oil pad, and rod. Different materials are considered for the spring, including spring steel, phosphor bronze, beryllium copper, and titanium alloy. The model is analyzed in ANSYS by applying loads and boundary conditions to determine stresses, displacements, and natural frequencies. The results are compared to select the best material for the spring in the shock absorber.
The International Journal of Engineering and Science (The IJES)theijes
The International Journal of Engineering & Science is aimed at providing a platform for researchers, engineers, scientists, or educators to publish their original research results, to exchange new ideas, to disseminate information in innovative designs, engineering experiences and technological skills. It is also the Journal's objective to promote engineering and technology education. All papers submitted to the Journal will be blind peer-reviewed. Only original articles will be published.
Modeling Approach of Agricultural Cantilever Sprayer Boom Leveling SystemIRJET Journal
This document describes a model of an agricultural sprayer boom leveling system that uses a four-bar linkage mechanism and electro-hydraulic circuit for automatic level correction. The system aims to precisely maintain the distance between spraying nozzles and crops. Components of the model include hydraulic cylinders, pumps, ultrasonic sensors, a microcontroller, and pipes. The hydraulic circuit was designed and simulated using automation software. The document discusses modeling the leveling control system, determining specifications for the hydraulic actuating cylinder based on required force calculations, and simulating the actuating mechanism circuit diagram.
The document is a report on torsional vibrations submitted by Puskhar Datta, a student at the Government College of Engineering and Textile Technology in Serampore, India. It includes an introduction to torsional vibrations and sections covering topics like torsional vibration analysis, critical speeds, damping, measurement techniques, and applications to automotive and rotating machinery systems. The goal is to analyze torsional vibrations which are oscillations that occur when an object twists or rotates about its central axis.
IRJET- Design & Development of Hydraulically Dowel Pin Pressing MachineIRJET Journal
1. The document describes the design and development of a hydraulically operated dowel pin pressing machine.
2. It uses four hydraulic cylinders, with the master cylinder clamping a workpiece and two working cylinders pressing dowel pins into the workpiece from above and below.
3. Finite element analysis was performed on dowel pin components to analyze stress, deformation, and safety factors under load.
I. The document describes the design and analysis of a shock absorber.
II. A helical spring made of different materials is modeled in CATIA and analyzed in ANSYS to determine the best material.
III. Titanium alloy performs the best with the least displacement and stress compared to spring steel, phosphor bronze, and beryllium copper.
IRJET- Design and Fabrication of Pneumatic Bumper for Four WheelerIRJET Journal
The document describes the design and fabrication of a pneumatic bumper system for four-wheel vehicles. The system uses IR sensors to detect obstacles within 4 feet of the vehicle traveling over 40-50 km/h. When an obstacle is detected, a control signal activates the pneumatic bumper system to protect both people and the vehicle. The system includes IR transmitter and receiver circuits, a control unit, pneumatic cylinders, solenoid valves, and other components to control air flow and absorb impact forces pneumatically. The goal is to minimize vehicle and passenger damage from accidents by using a pneumatically activated bumper system.
3 d modeling and dynamic charectarization of steam turbine packet blade and c...eSAT Journals
Abstract A rotating turbine blade (bucket) is the component, which converts the kinetic energy of the flowing fluid into mechanical energy. Thus the reliability of these blades is very important for the successful operation of a turbine. Turbine blades experience fluctuating forces when they pass through non-uniform fluid flow from the stationary vanes. The basic design consideration is to avoid or to minimize the dynamic stresses produced by the fluctuating forces. The aim of the project is to estimate the stresses occurring in the packet blade of steam turbine in last stage due to centrifugal forces and steam bending forces. The blade, root and disc are modeled separately in ANSYS package and they are assembled using constrained equations. After giving the constrain equations cyclic symmetric analysis conditions are applied and then static and model analysis are carried out. After that Campbell and safe diagrams are plotted. Index Terms: ANSYS, Campbell diagrams, Cyclic symmetric analysis and Safe diagrams.
Design of Semi-Automatic Vibration Absorber by using FEAIRJET Journal
This document describes the design of a semi-automatic dual mass vibration absorber using finite element analysis. The dual mass vibration absorber uses two movable masses that can be tuned to reduce vibrations by moving the masses in or out. Modal analysis using finite elements was conducted to analyze the vibration modes of the absorber. The analysis showed the natural frequencies and mode shapes changed as the mass positions along the rods were varied. The dual mass vibration absorber was found to be effective at reducing beam vibrations around the attachment point and elsewhere by tuning the absorber's frequency through mass positioning.
IRJET- Mechanical Behavior Performance in Boring Tool using Composite MaterialIRJET Journal
1) The document describes a study analyzing vibrations in boring tools through finite element analysis to reduce wear and improve accuracy.
2) A boring tool and various damping materials, including aloe vera root and papaya stem, were modeled in Pro-Engineer and analyzed in ANSYS to determine natural frequencies and stresses.
3) The results found that a papaya stem damper most effectively reduced boring tool stresses and vibrations compared to an aloe vera root damper or no damper.
IRJET- Design of Fixture for Wind Mill Door SegmentIRJET Journal
This document describes the design of a new fixture for manufacturing door segments for wind turbines. The new fixture was created to reduce production time for processes like segment cutting. It allows two plates to be cut simultaneously for certain wind turbine models. Analysis showed the new fixture could reduce total work time for door segment production from 285 minutes to 268 minutes by streamlining some steps. It is expected to increase production rate and reduce labor requirements compared to the existing fixture design.
Encryption in Microsoft 365 - ExpertsLive Netherlands 2024Albert Hoitingh
In this session I delve into the encryption technology used in Microsoft 365 and Microsoft Purview. Including the concepts of Customer Key and Double Key Encryption.
Sudheer Mechineni, Head of Application Frameworks, Standard Chartered Bank
Discover how Standard Chartered Bank harnessed the power of Neo4j to transform complex data access challenges into a dynamic, scalable graph database solution. This keynote will cover their journey from initial adoption to deploying a fully automated, enterprise-grade causal cluster, highlighting key strategies for modelling organisational changes and ensuring robust disaster recovery. Learn how these innovations have not only enhanced Standard Chartered Bank’s data infrastructure but also positioned them as pioneers in the banking sector’s adoption of graph technology.
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This document provides a review of particle impact damping techniques used to suppress vibrations in various applications. Particle impact damping involves attaching an impact mass containing particles to a vibrating structure. Vibrational energy is dissipated through impacts between the particles and main structure. The review discusses how particle impact dampers have been used effectively in applications like robots, aircraft, bridges, machine tools and other lightly damped structures to reduce undesirable vibrations. It also summarizes several studies that investigated using particle impact damping to improve damping in structures like robot arms, drilling tools, bridge pylons and communication towers. The studies found impact damping can provide effective attenuation of vibrations over a wide range of frequencies and environments.
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This document discusses vibration isolation methods for reducing noise and vibration in machines. It provides an overview of previous research on analyzing vibration levels in machines like lathe machines and blowers, and developing vibration isolators using materials like viscoelastic pads. The document reviews studies on modeling and designing nonlinear vibration isolators, and analyzing the effects of parameters like temperature on isolator performance. It concludes that vibration pads made of viscoelastic materials are effective and low-cost methods for vibration isolation in machines.
1. The document describes the design, development, and testing of a new hydraulic engine mount for vibration isolation in agricultural applications.
2. A new configuration of hydraulic engine mount is designed that uses a piston and cylinder, reservoir, spring, and hydraulic oil for passive damping. It can also be made active using a solenoid actuator.
3. Testing of the hydraulic engine mount was done using an FFT analyzer to measure vibration parameters. Results showed the designed mount provided better vibration isolation than conventional rubber mounts.
This document describes the design of a multipurpose pesticides sprayer pump. It aims to reduce the effort required for spraying pesticides and allow spraying in any direction around crops. The design includes a trolley frame to support the system, a storage tank, reciprocating pump, and multiple nozzles. The pump is designed to provide adequate pressure through analyzing system parameters like power required, swept volume, and discharge rate. The sprayer pump allows for both spraying pesticides and removing weeds, covering more area in less time compared to traditional backpack sprayers. It is an affordable and ergonomic option for small-scale farmers.
IRJET- Development of Actively Tuned Vibration Absorber for Washing MachineIRJET Journal
This document describes research into developing an actively tuned vibration absorber for washing machines. It begins with background on vibration absorbers and how they work by adding an extra mass-spring-damper system to reduce vibrations. The researchers aim to create a vibration absorber that can retune itself in response to changing excitation frequencies. They model a washing machine drum in CAD software and conduct modal and harmonic analyses in ANSYS to determine natural frequencies and vibration responses. Calculations are shown for selecting absorber mass and spring properties to match the drum's natural frequency range during spinning. The absorber is modelled attached to the washing machine for further analysis. The research aims to reduce washing machine vibrations through an integrated, self-tuning absor
Performance Monitoring of Vibration in Belt Conveyor SystemIJERA Editor
We are always using some kind of machines in our daily life starting from fan, refrigerator and washing machines at home. In case of industries of industrial machinery items condition monitoring is important to know onset impending defects. There are so many types of indicating phenomenon such as vibration, heat, debris in oil, noise and sounds which emanate from these in efficiently running machines. This paper presents the vibration related fault identification and maintenance of belt conveyor systems (BCS). After analyzing the spectrum and vibration readings, it was observed that a combination of parallel and angular misalignment between motor & gear box was present causing high axial and radial vibration. The defect was rectified by mechanical maintenance activities and latter the vibration was found reduced within limit. Also the vibration readings were taken after rectification. The above results are presented in this paper.
Modeling & Analysis of Centrifugal Blower using Composite MaterialIOSR Journals
Centrifugal blowers are used extensively for on-board naval applications which have high noise levels. The noise generated by a rotating component is mainly due to random loading force on the blades and periodic iteration of incoming air with the blades of the rotor. The Contemporary blades in naval applications are made up of Aluminium or Steel and generate noise that causes disturbance to the people working near the blower. The present work aims at observing the choice of E-Glass as an alternative to metal for better vibration control. E-Glass, known for their superior damping characteristics are more promising in vibration reduction compared to metals. The modeling of the blower was done by CATIA V5 R19. The blower is meshed with a three dimensional hex8 mesh is done using HYPERMESH 10. It is proposed to design blower with Epoxy glass, analyze its strength and deformation using FEM technique. In order to evaluate the effectiveness of E-Glass and metal blower using FEA packaged (ANSYS). Modal analysis is performed on both Aluminium and E-Glass blower to find out first five natural frequencies
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The document summarizes a case study on implementing design-out maintenance (DOM) on a pump-motor set with frequent bearing failures. [1] Initial failure analysis found the mean time to failure of the bearings was 37 days, with annual failure costs of INR 355,000. [2] On-site and off-site inspections identified excessive bearing pre-load and high vibration levels as likely causes. [3] Corrective actions including adjusting bearing fits and alignment increased the mean time to failure to over 2066 days, significantly reducing failure costs.
IRJET-Design and Analysis Of Shock AbsorberIRJET Journal
This document summarizes the design and analysis of a shock absorber. It discusses:
1) Designing the shock absorber components like the upper mount, bottom mount, oil pad, and rod in CATIA.
2) Conducting structural and modal analysis in ANSYS to determine stresses and displacements using different spring materials - titanium alloy, phosphor bronze, beryllium copper, and spring steel.
3) The results show titanium alloy has the least stress intensity and maximum displacement, making it the best material for the spring. Modifying the design by reducing the spring diameter further lowers stresses and displacements.
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The International Journal of Engineering and Science (The IJES)theijes
The International Journal of Engineering & Science is aimed at providing a platform for researchers, engineers, scientists, or educators to publish their original research results, to exchange new ideas, to disseminate information in innovative designs, engineering experiences and technological skills. It is also the Journal's objective to promote engineering and technology education. All papers submitted to the Journal will be blind peer-reviewed. Only original articles will be published.
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This document describes a model of an agricultural sprayer boom leveling system that uses a four-bar linkage mechanism and electro-hydraulic circuit for automatic level correction. The system aims to precisely maintain the distance between spraying nozzles and crops. Components of the model include hydraulic cylinders, pumps, ultrasonic sensors, a microcontroller, and pipes. The hydraulic circuit was designed and simulated using automation software. The document discusses modeling the leveling control system, determining specifications for the hydraulic actuating cylinder based on required force calculations, and simulating the actuating mechanism circuit diagram.
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1. The document describes the design and development of a hydraulically operated dowel pin pressing machine.
2. It uses four hydraulic cylinders, with the master cylinder clamping a workpiece and two working cylinders pressing dowel pins into the workpiece from above and below.
3. Finite element analysis was performed on dowel pin components to analyze stress, deformation, and safety factors under load.
I. The document describes the design and analysis of a shock absorber.
II. A helical spring made of different materials is modeled in CATIA and analyzed in ANSYS to determine the best material.
III. Titanium alloy performs the best with the least displacement and stress compared to spring steel, phosphor bronze, and beryllium copper.
IRJET- Design and Fabrication of Pneumatic Bumper for Four WheelerIRJET Journal
The document describes the design and fabrication of a pneumatic bumper system for four-wheel vehicles. The system uses IR sensors to detect obstacles within 4 feet of the vehicle traveling over 40-50 km/h. When an obstacle is detected, a control signal activates the pneumatic bumper system to protect both people and the vehicle. The system includes IR transmitter and receiver circuits, a control unit, pneumatic cylinders, solenoid valves, and other components to control air flow and absorb impact forces pneumatically. The goal is to minimize vehicle and passenger damage from accidents by using a pneumatically activated bumper system.
3 d modeling and dynamic charectarization of steam turbine packet blade and c...eSAT Journals
Abstract A rotating turbine blade (bucket) is the component, which converts the kinetic energy of the flowing fluid into mechanical energy. Thus the reliability of these blades is very important for the successful operation of a turbine. Turbine blades experience fluctuating forces when they pass through non-uniform fluid flow from the stationary vanes. The basic design consideration is to avoid or to minimize the dynamic stresses produced by the fluctuating forces. The aim of the project is to estimate the stresses occurring in the packet blade of steam turbine in last stage due to centrifugal forces and steam bending forces. The blade, root and disc are modeled separately in ANSYS package and they are assembled using constrained equations. After giving the constrain equations cyclic symmetric analysis conditions are applied and then static and model analysis are carried out. After that Campbell and safe diagrams are plotted. Index Terms: ANSYS, Campbell diagrams, Cyclic symmetric analysis and Safe diagrams.
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IRJET- Mechanical Behavior Performance in Boring Tool using Composite MaterialIRJET Journal
1) The document describes a study analyzing vibrations in boring tools through finite element analysis to reduce wear and improve accuracy.
2) A boring tool and various damping materials, including aloe vera root and papaya stem, were modeled in Pro-Engineer and analyzed in ANSYS to determine natural frequencies and stresses.
3) The results found that a papaya stem damper most effectively reduced boring tool stresses and vibrations compared to an aloe vera root damper or no damper.
IRJET- Design of Fixture for Wind Mill Door SegmentIRJET Journal
This document describes the design of a new fixture for manufacturing door segments for wind turbines. The new fixture was created to reduce production time for processes like segment cutting. It allows two plates to be cut simultaneously for certain wind turbine models. Analysis showed the new fixture could reduce total work time for door segment production from 285 minutes to 268 minutes by streamlining some steps. It is expected to increase production rate and reduce labor requirements compared to the existing fixture design.
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Design Optimization for Vibration Level of Root Blower With No Load Condition
1. The International Journal Of Engineering And Science (IJES)
|| Volume || 4 || Issue || 1 || January - 2015 || Pages || 44-50||
ISSN (e): 2319 – 1813 ISSN (p): 2319 – 1805
www.theijes.com The IJES Page 44
Design Optimization for Vibration Level of Root Blower With No
Load Condition
Gomatesh V. Malikwade1
, Swapnil S. Patil1
, Aditya A. Magdum1
, Avadhoot V.
Khandare1
, Prof. A.S.Adadande2
, Prof.Dr.S.H.Sawant2
1
UG Student, Dr. J. J. Magdum College of Engineering, Jaysingpur Kolhapur Maharashtra.
2
Proffessor, Dr. J. J. Magdum College of Engineering, Jaysingpur Kolhapur Maharashtra.
--------------------------------------------------------ABSTRACT--------------------------------------------------------------
The physical movement or motion of a rotating machine is normally referred to as vibration. Since the vibration
frequency and amplitude cannot be measured by sight or touch, means must be employed to convert the
vibration into a usable product that can be measured and analyzed. Electronics, mechanics, and chemical
physics are closely related. Therefore, it would logically follow that the conversion of the mechanical vibration
into an electronic signal is the best solution. The means of converting the mechanical vibration into an
electronic signal is called a transducer. The transducer output is proportionate to how fast the machine is
moving (frequency) and how much the machine is moving (amplitude). The frequency describes what is wrong
with the machine and the amplitude describes relative severity of the problem. The motion can be harmonic,
periodic, and/or random. All harmonic motion is periodic. However, all periodic motion is not harmonic.
Random motion means the machine is moving in unpredictable manner. Vibration analysis is one of the best
ways for companies with heavy industrial rotating machinery to save money. This paper describes methods so as
to reduce vibration. Measurement of vibration is made by using FFT Analyzer.
KEYWORDS: Transducer, Random Motion, Vibration Isolator, FFT Analyzer.
--------------------------------------------------------------------------------------------------------------------------------------
Date of Submission: 7 January 2015 Date of Accepted: 20 January 2015
--------------------------------------------------------------------------------------------------------------------------------------
I. INTRODUCTION
In the 21st
century we are much more ahead in the modern machine designs and technology which will
fulfil the today’s need of industries. Now the main requirement of the industries is to increase the efficiency and
reliability of equipment. To fulfil this requirement we have to optimize design with the help of various
techniques. As the study is concerned about optimization in design of root blower one of the method for
optimizing design is reducing the vibration in root Blower. Vibration is a mechanical phenomenon whereby
oscillations occur about an equilibrium point. The oscillations may be periodic such as the motion of a pendulum
or random such as the movement of a tire on a gravel road. Vibration is occasionally "desirable". For example,
the motion of a tuning fork, the reed in a woodwind instrument or harmonica, or mobile phones or the cone of a
loudspeaker is desirable vibration, necessary for the correct functioning of the various devices[1].
More often, vibration is undesirable, wasting energy and creating unwanted sound – noise. For
example, the vibrational motions of engines, electric motors, or any mechanical device in operation are typically
unwanted. Such vibrations can be caused by imbalances in the rotating parts, uneven friction, the meshing of
gear teeth, etc. Careful designs usually minimize unwanted vibrations. When a machine moves, its motion
induces vibration in its structure. At low speed its vibration can be ignored, but at moderate and high speed this
vibration become larger and various parts of machines no longer move the way in which they were indented to
move. Many machines in industries have performance limitations due to vibration problems. The generally
accepted methods for vibration control of industrial equipment include; Force Reduction, Mass Addition,
Tuning, Isolation, and Damping. This paper will briefly introduce each method, and describe practical methods
for their application. Several scenarios and case studies will be presented, with emphasis on pragmatic solutions
to industrial vibration problems [2] [3].
2. Design Optimization for Vibration Level…
www.theijes.com The IJES Page 45
II. ROOT BLOWER
The root blower is also known as positive displacement pump. It is used in conditions ranging from
strong vacuum to high pressure in all branch of industry. The Root's Blower consists 2 or 3 lobe of rotors and
rotate in synchronous and opposite direction by two timing gear. The two rotors are assembled with casing and
keep small gaps with no contact of rotation between the casings. The two rotors rotate in synchronous and
opposite and continue to turn and trap a quantity of fluid between the rotating rotors, casing and side plates.
Continue rotation carry the trapped volume around the rotor and casing out to the discharge port.
The Processes are as Follow: 1. Fluid enter 2. Enclose by rotor and casing 3. Discharge fluid Root
blower has wide range of application in many of the industries. Roots blowers are used in waste water treatment
plants for aeration. Roots blowers are used to supply required air for pneumatic conveying systems. It is also
used in the agricultural application, dying purpose in industries, paper industries, etc. Simple design, easy
handling and stable performance make a wide range of applications [4]. Along with wide range of application
one of the major disadvantages is the maintenance of blower. As in many cases it has to work under high speed,
due to which undesirable vibrations are produced. So by analyzing the vibrations and reducing it by suitable
method led to improve the performance of the blower. Due to simple design, easy handling and stable
performance makes a root blower to be used for wide range of applications. Most industries are facing the huge
problem regarding the regular maintenance of blower. There are so many reasons due to which the failure of the
component takes place in root blower.
But one of the major reasons is the vibrations produced by the blower. High vibrations were observed
in the rotating parts of blower. The main aim of the selecting topic is to find vibration frequency of blower. In
the analysis of blower the measurements are taken at various duties like casing, foundation, bearing and timing
gears. By analyzing the amount of vibration in the root blower using FFT Analyzer’s we can determine the main
areas where the vibrations are created more than the give standard values.
Analyzing the vibrations of the root blower we can provide suitable preventive measures so that the performance
of the blower can be increased. As the vibrations are reduced we can obviously increase the life of the different
components and reduce the maintenance.
III. PRACTICAL METHODS FOR VIBRATION CONTROL OF INDUSTRIAL
EQUIPMENT
[1] Force Reduction of excitation inputs due to, for example, unbalances or misalignment will decrease
the corresponding vibration response of the system.
[2] Mass Addition will reduce the effect (system response) of a constant excitation force.
[3] Tuning (changing) the natural frequency of a system or component will reduce or eliminate
amplification due to resonance.
[4] Isolation rearranges the excitation forces to achieve some reduction or cancellation.
[5] Damping is the conversion of mechanical energy (vibrations) into heat.
IV. ISOLATION
Isolation reduces the transmitted vibration response of a system by rearranging energy so that inertia
(mass) opposes force. Resilient supports (isolators), typically elastomeric, spring, and/or pneumatic, decouple a
system from force inputs, and cause the isolated system to be out of phase with the force inputs. [5] Referring to
Figure 1, below, the frequency ratio, f / fn, must be greater than √2 (isolation zone) for isolation to be successful.
As the frequency ratio increases, force transmitted (vibration response) decreases. Systems where the frequency
ratio is below √2, (amplification zone) are not suitable for isolation.
Figure1. Transmissibility Diagram
3. Design Optimization for Vibration Level…
www.theijes.com The IJES Page 46
Ft = force transmitted [N]
F = force input [N]
f = frequency of force input, Hz
fn = (isolated) system natural frequency, Hz
ζ = c/cc = damping ratio.
V. ASSESSMENT CRITERIA
In this guideline the vibration severity of blower is classified on the basis of following parameter:
Machine group corresponding to machine design and bearing
Type of machine mounting
Machine mountings are subdivided into two groups on the basis of their elasticity of foundation.
Normally blower units are installed on the rigid base frames together with their drives (Engine, gearing) and
ancillary systems. This base frame can be mounted directly upon the foundation (concrete slab, industrial
building flooring, etc.) and bolted down permanently to it (rigid mounting).Another possibility is to mount only
the drive unit (motor and blower) or even the entire set on defined spring elements so as to insulate the
foundation (intermediate floor of building, ship’s deck, base frame of acoustic hood, etc.) against vibration
excitations. This is very often encountered with smaller to mid-range mass-production blower units but in
experimental cases also with process-gas blower.
Should it be necessary in doubtful case to decide whether a sub frame is rigid or resilient, if this
guideline is used (rather than DIN ISO 19816-3) the entire mass and vertical spring stiffness of the mounting of
compressor set part in question must be taken into consideration. A resilient (low tuned) mounting of the blower
set means that the corresponding first vertical natural frequency of total vibration system consisting of blower
and sub frame is at least less than the smallest existing relevant exciter frequency (with the blower this is the
simple rotational frequency of secondary rotor, in the overall system in most cases the rotational frequency of
drive motor even if this is installed on a base frame).With resiliently mounted machines the vibrational level
tends to be higher than is the case with a rigid mounting.
VI. EVALUATION
This guideline describes in a generalized from the two criteria for evaluating the housing and rotor
vibrations of root blowers. One criterion relates to the magnitude of the broadband measured vibration, the other
relates to change in the magnitude of vibration irrespective of whether it is an increases or decreases [6].
VII. TEST METHODOLOGY
The root blower used for design optimization is as shown in figure 2. The blower is manufactured by
Kulkarni Power tools Ltd. of model SR069. The test readings are taken with FFT analyzer. The accelerometer
connection are made ready for taking the readings in three positions viz. vertical, horizontal and axial
respectively at drive and non-drive end of blower.
Figure 2: Test set-up.
4. Design Optimization for Vibration Level…
www.theijes.com The IJES Page 47
The test set-up is made for following three arrangements:
a) Flexible arrangement: In flexible arrangement the blower is mounted on flexible spring support.
b) Buffer pad arrangement: The flexible arrangement is replaced by buffer pad arrangement.
c) Flat pad arrangement: The buffer pad arrangement is replaced by flat pad arrangement.
VIII. RESULT AND DISCUSSIONS
Flexible Arrangement: The readings are obtained by using FFT analyzer for flexible arrangement.
Figure 3: Frequency response graph for rigid frame arrangement.
Figure 4: Frequency response graph for flexible type arrangement
Table 1. RMS values for rigid frame arrengement
Table 2. RMS values for flexible type arrengement
Comparing the observation of fixed frame arrangement and flexible arrangement it can be observed that the
vibrations are reduced in the flexible arrangement.
5. Design Optimization for Vibration Level…
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Buffer Pad Arrangement: The readings are obtained by using FFT analyzer for Buffer Pad arrangement.
Figure 5: Frequency response graph for rigid frame arrangement
Figure 6: Frequency response graph for buffer pad arrangement
Table 3. RMS values for rigid frame arrengement
Table 4. RMS values for buffer pad arrengement
Comparing the observation of flexible arrangement and buffer pad arrangement it can be observed that the
vibrations are reduced in the buffer pad arrangement.
6. Design Optimization for Vibration Level…
www.theijes.com The IJES Page 49
Flat Pad Arrangement: The readings are obtained by using FFT analyzer for Flat Pad arrangement.
Figure 7: Frequency response graph for rigid frame arrangement.
Figure 8: Frequency response graph for flat pad arrangement.
Table 5. RMS values for rigid frame arrengement.
Table 6. RMS values for flat pad arrengement
Comparing the observation of buffer arrangement and flat pad arrangement it can be observed that the vibrations
are reduced in the flat pad arrangement. This is due to the fact that the flat pad absorbs the vibrations which are
then transmitted to the foundation.
7. Design Optimization for Vibration Level…
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IX. CONCLUSION
To increase the performance of the any Industrial equipment it is necessary to analyze the problem.
There are many methods to control and minimize the vibrations in the equipment. But some of the important are
discussed in this paper. With the help of techniques discussed in this paper will help to reduce the vibration
occurred in the equipment. The vibration levels obtained in case of flat pad Arrangement are much less than
other Arrangements.
REFERENCES
[1] Bently, Donald E. “Fundamentals of Rotating Machinery Diagnostics Bently Pressurized Bearings Pressure.” 67th Annual National
Conference of the Indian Psychiatric Society, ANCIPS 2015.
[2] D.K. Paul1, S.N.Bagchi2, “Vibration and Shock Isolation system Design for equipment and infrastructural machineries”,
International Journal of Multidisciplinary Sciences And Engineering, June 2011.
[3] J Michael Robichaud “Reference Standards for Vibration Monitoring and Analysis”, International Conferences Worlwide
Conference Call for Papers. Jan 2012.
[4] Takeyoshi UEMATSU1, Yuji ISHIYAMA2, “Development of compact vibration isolation equipment applicable to existing
residence”, 13th World conformance on earthquake engineering, Aug.2014.
[5] Asad Said Juma Al Zadjali and G.R. Rameshkumar “Condition Monitoring of Centrifugal Blower Using Vibration Analysis.”
International Journal of Multidisciplinary Sciences And Engineering, Vol. 4, No. 5, June 2013.
[6] VDI 3836, (Measurement and Evolution of Mechanical Vibration of screw type compressor and root blower), February (2012).