The fundamentals of welding arc, mechanisms of electron
emission, different zones in welding arc, electrical aspects related with welding arc, arc forces.
and their significance in welding.
Ekeeda Provides Online Video Lectures for Mechanical Engineering Degree Subject Courses for All Engineering Universities. Visit us: https://ekeeda.com/streamdetails/stream/mechanical-engineering
The fundamentals of welding arc, mechanisms of electron
emission, different zones in welding arc, electrical aspects related with welding arc, arc forces.
and their significance in welding.
Ekeeda Provides Online Video Lectures for Mechanical Engineering Degree Subject Courses for All Engineering Universities. Visit us: https://ekeeda.com/streamdetails/stream/mechanical-engineering
It is a type of welding that uses a welding power supply to create an electric arc between an metal stick and the base material to melt the metals at the point-of-contact
One of the welding processes that used in Engineering field is the plasma arc welding. There are several types of welding processes similar to this, but plasma arc welding has its unique features.
Thanks for the colleagues who give this slides to publish.
welding is an amazing topic espacially when it comes to spot welding. it will help you understand the basics and also students looking to write reports on welding topics.
Arc welding process that produces coalescence of metals by heating them with a constricted arc between an electrode and the work piece (transferred arc) or between the electrode and the water-cooled constricting nozzle (non transferred arc) .
Plasma: A gaseous mixture of positive ions, electrons and neutral gas molecules
Topic: Superconductors and their real life applications as a theory of knowledge
Type: Essay
Subject: Physics
Academic Level: Undergraduate 1-2
Style: MLA
Language: English (U.S)
Number of Pages: 6 (double-spaced, Times New Roman, Font 12)
Number of sources: 5
Task Details:
1) Define superconductors;
2) Discuss their properties;
3) Describe how they can be utilized to solve various real life problems.
It is a type of welding that uses a welding power supply to create an electric arc between an metal stick and the base material to melt the metals at the point-of-contact
One of the welding processes that used in Engineering field is the plasma arc welding. There are several types of welding processes similar to this, but plasma arc welding has its unique features.
Thanks for the colleagues who give this slides to publish.
welding is an amazing topic espacially when it comes to spot welding. it will help you understand the basics and also students looking to write reports on welding topics.
Arc welding process that produces coalescence of metals by heating them with a constricted arc between an electrode and the work piece (transferred arc) or between the electrode and the water-cooled constricting nozzle (non transferred arc) .
Plasma: A gaseous mixture of positive ions, electrons and neutral gas molecules
Topic: Superconductors and their real life applications as a theory of knowledge
Type: Essay
Subject: Physics
Academic Level: Undergraduate 1-2
Style: MLA
Language: English (U.S)
Number of Pages: 6 (double-spaced, Times New Roman, Font 12)
Number of sources: 5
Task Details:
1) Define superconductors;
2) Discuss their properties;
3) Describe how they can be utilized to solve various real life problems.
This project are for understanding the working, advantages and disadvantages of plasma arc welding, the viewers can also use it for their needful purpose.
Corrosion and Degradation of Materials-chapter 16ssuser2fec01
Cost of Corrosion
Fundamentals of Corrosion
Electrochemical reactions
EMF and Galvanic Series
Concentration and Temperature (Nernst)
Corrosion rate
Corrosion prediction (likelihood)
Polarization
Protection Methods
Mig welding process is semi automatic when used for manual welding . It can be used in welding automation systems for high quality welds and high productivity.
Hierarchical Digital Twin of a Naval Power SystemKerry Sado
A hierarchical digital twin of a Naval DC power system has been developed and experimentally verified. Similar to other state-of-the-art digital twins, this technology creates a digital replica of the physical system executed in real-time or faster, which can modify hardware controls. However, its advantage stems from distributing computational efforts by utilizing a hierarchical structure composed of lower-level digital twin blocks and a higher-level system digital twin. Each digital twin block is associated with a physical subsystem of the hardware and communicates with a singular system digital twin, which creates a system-level response. By extracting information from each level of the hierarchy, power system controls of the hardware were reconfigured autonomously. This hierarchical digital twin development offers several advantages over other digital twins, particularly in the field of naval power systems. The hierarchical structure allows for greater computational efficiency and scalability while the ability to autonomously reconfigure hardware controls offers increased flexibility and responsiveness. The hierarchical decomposition and models utilized were well aligned with the physical twin, as indicated by the maximum deviations between the developed digital twin hierarchy and the hardware.
Sachpazis:Terzaghi Bearing Capacity Estimation in simple terms with Calculati...Dr.Costas Sachpazis
Terzaghi's soil bearing capacity theory, developed by Karl Terzaghi, is a fundamental principle in geotechnical engineering used to determine the bearing capacity of shallow foundations. This theory provides a method to calculate the ultimate bearing capacity of soil, which is the maximum load per unit area that the soil can support without undergoing shear failure. The Calculation HTML Code included.
Overview of the fundamental roles in Hydropower generation and the components involved in wider Electrical Engineering.
This paper presents the design and construction of hydroelectric dams from the hydrologist’s survey of the valley before construction, all aspects and involved disciplines, fluid dynamics, structural engineering, generation and mains frequency regulation to the very transmission of power through the network in the United Kingdom.
Author: Robbie Edward Sayers
Collaborators and co editors: Charlie Sims and Connor Healey.
(C) 2024 Robbie E. Sayers
NO1 Uk best vashikaran specialist in delhi vashikaran baba near me online vas...Amil Baba Dawood bangali
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Immunizing Image Classifiers Against Localized Adversary Attacksgerogepatton
This paper addresses the vulnerability of deep learning models, particularly convolutional neural networks
(CNN)s, to adversarial attacks and presents a proactive training technique designed to counter them. We
introduce a novel volumization algorithm, which transforms 2D images into 3D volumetric representations.
When combined with 3D convolution and deep curriculum learning optimization (CLO), itsignificantly improves
the immunity of models against localized universal attacks by up to 40%. We evaluate our proposed approach
using contemporary CNN architectures and the modified Canadian Institute for Advanced Research (CIFAR-10
and CIFAR-100) and ImageNet Large Scale Visual Recognition Challenge (ILSVRC12) datasets, showcasing
accuracy improvements over previous techniques. The results indicate that the combination of the volumetric
input and curriculum learning holds significant promise for mitigating adversarial attacks without necessitating
adversary training.
Industrial Training at Shahjalal Fertilizer Company Limited (SFCL)MdTanvirMahtab2
This presentation is about the working procedure of Shahjalal Fertilizer Company Limited (SFCL). A Govt. owned Company of Bangladesh Chemical Industries Corporation under Ministry of Industries.
2. History
Introduction
Forces that affect the metal transfer
Classification of mode of metal transfer
Parameter that affect the metal transfer
Defects
General points
3. After Bronze Age and the Iron Age Sir
Humphry Davy in 1800 discovered Short
pulsed electric arc welding.
Around 1900, all automatic arc welding
worked on alternating current (A.C)
discovered.
4. The transfer of molten metal from the tip of
electrode to base metal.
Arc welding and Consumable electrode
5. Gravity Force
Surface Tension force
Electromagnetic Pinch Effect
Drag Force
6. Detaching Force - electrode pointed
downward
Retaining Force – electrode pointed upward
7. Fg = mg
= ρV g
where,
ρ = density of
electron material
V= volume of molten droplet
g=acc. Due to gravity (~9.81)
9. Fs = 2πγ r f(r/c)
γ = surface tension
r = radius of electrode
C =(2γ)/ (mgб)
f(r/c)=complex function varies
from 0.6-1.0
c =constant of capillarity of
electrode material
16. A) With Electrode
1. Short Circuit
a. Dip Transfer
2. Globular
a. Repelled Transfer
3. Spray
a. Explosive Transfer
4. Slag Enveloped
B) With Rod
1. Short Circuit
a. Dip Transfer
2. Globular
a. Repelled Transfer
17. Periodic bridging of gap between the
electrode and work piece.
Heavy current flow occurs
Decrease - surface tension, viscosity.
Increase - electro motive, hydro dynamic
force.
18.
19. Short circuit mode of metal transfer.
Electrode is fed into weld pool
Fast pace
20.
21. Molten metal droplets is detached in globular
form.
Action of gravity
Arc length is medium to long
22. Mode of globular transfer
After detachment droplet not travelled into
weld pool
Force -reverse plasma jet,
Cause poor weld transfer and Excessive
spatters.
23.
24. High current density that tends to high temp.
Increase pinch effect
Depending upon the current density spray
mode have three stages:-
1. Projected transfer (high)
2. Streaming transfer (medium)
3. Rotary transfer (low)
25. Droplet spattered (on the tip after
detachment)
Formation of gas bubbles
26.
27. It is used in some application or according to
job.
wet welding, under water welding etc
Not used generally.
32. Weld power source
Electrode polarity
Shielding gas
Emissive flow rate
Welding Position
33. In spray metal transfer mode
1. Large Heat Affected Zone(HAZ).
2. Creaks appearance.
34. In short circuit metal transfer mode
1. More spatters.
2. Low speed.
3. Solid particle inclusion.
4. Sometime porosity.
35. In globular metal transfer mode
1. Rough weld bead.
2. Blow holes
3. Pin holes.
36. In slag enveloped mode of metal
transfer
1. Slag inclusion causes creaks
2. Porosity
3. Under cuts photomicrograph
37.
38. Spray metal transfer – costly , high current
and voltage, skill required.
Generally used globular and pulsed short
circuit metal transfer in industry.
According to efficiency:-
Spray
transfer
Short
circuit
Globular
slag
enveloped