Welding: Principles and Applications (MindTap Course List)
8th Edition
ISBN: 9781305494695
Author: Larry Jeffus
Publisher: Cengage Learning
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Textbook Question
Chapter 25, Problem 36R
Why will some flaws appear larger on an X-ray than they are in the weld?
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How can machinery parts and pipeline welds be tested for flaws without destroying them? Name several processes.
The strength in the weld zone of an age-hardening aluminium alloy is often higher than in the heat affect zone (HAZ). Which of the following is NOT a reason for this?
O The maximum temperature is higher in the weld pushing more of the hardening phase into solution.
O Particles that don't dissolve might transform into equilibrium phases instead. This is more likely in the HAZ.
O The greater dissolution of particles in the weld leads to greater solid solution strengthening.
O The increase in solute in the matrix allows more subsequent natural aging to occur in the weld zone.
O Particles in the HAZ tend to dissolve, while those in the weld coarsen. The increase in particle size and spacing reduces the strength of HAZ.
Chapter 25 Solutions
Welding: Principles and Applications (MindTap Course List)
Ch. 25 - Why are all welds not inspected to the same level...Ch. 25 - Why is the strength of all production parts not...Ch. 25 - Why is it possible to do more than one...Ch. 25 - What is a discontinuity?Ch. 25 - What is a defect?Ch. 25 - What is tolerance?Ch. 25 - What are the 12 most common discontinuities?Ch. 25 - How can porosity form in a weld and not be seen by...Ch. 25 - What welding process can cause porosity to form?Ch. 25 - How is piping porosity formed?
Ch. 25 - What are inclusions, and how are they caused?Ch. 25 - When does inadequate joint penetration usually...Ch. 25 - How can a notch cause incomplete fusion?Ch. 25 - How can an arc strike appear on a guided-bend...Ch. 25 - What is overlap?Ch. 25 - What is undercut?Ch. 25 - What causes crater cracks?Ch. 25 - What is underfill?Ch. 25 - What is the difference between a lamination and a...Ch. 25 - How can stress be reduced through a plate's...Ch. 25 - What would be the tensile strength in pounds per...Ch. 25 - What would be the elongation for a specimen for...Ch. 25 - How are the results of a stress test reported?Ch. 25 - What would be the transverse shear strength per...Ch. 25 - What would be the longitudinal shearing strength...Ch. 25 - What are the three methods of destructive testing...Ch. 25 - How are the specimens bent for a guided-. root-,...Ch. 25 - How wide should a specimen be if the material...Ch. 25 - Why are guidelines drawn on the surface of a...Ch. 25 - What part of a fillet weld break test is examined?Ch. 25 - What can happen if acids are handled carelessly?Ch. 25 - What information about the weld does an impact...Ch. 25 - Which nondestructive test is most commonly used?Ch. 25 - List the five steps to be followed when using a...Ch. 25 - What properties must metal have before it can be...Ch. 25 - Why will some flaws appear larger on an X-ray than...Ch. 25 - How is the size of a flaw determined using...Ch. 25 - What is the major limitation of eddy current...Ch. 25 - What information does a hardness test reveal?Ch. 25 - Why is it important to select the correct welding...
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- What would be the transverse shear strength per inch of weld if a specimen that was 2.5 in. wide withstood 25,000 lb?arrow_forwardWhat are inclusions, and how are they caused?arrow_forwardHello ! I hope you are well.Why are we taking this specific cross section for the second part of the question ? Is it because it's the one where the nails are ?arrow_forward
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