Study Guide with Lab Manual for Jeffus' Welding: Principles and Applications, 8th
8th Edition
ISBN: 9781305494701
Author: Larry Jeffus
Publisher: Cengage Learning
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Textbook Question
Chapter 24, Problem 1R
Why is it important to select the correct welding code or standard?
Expert Solution & Answer
To determine
The reason for selecting the correct welding code or standard.
Answer to Problem 1R
The reason for selecting the correct welding code or standard is to judge the quality of weld.
Explanation of Solution
A welding code or standard is a list of rules and principles that may that may be applied to certain products or items. A welding code specifies certain specifications and requirements for a particular type of weld.
These are the detailed outlines established by various agencies and organizations that explains how to lay out a particular weld, how it should be performed and tested. These detailed outlines are known as codes, standards and specifications.
Codes, standards and specifications are a list of principles, rules and regulations that are needed to ensure that skilled welders across the world can produce the same type of weld with the same level of strength, safety and reliability.
Products which are fabricated as per a welding code or standard are usually inspected and checked in order to ensure the concurrence
There are some commonly used codes for welding. These are as follows.
- API standard 1104
- ASME Section IX
- AWS D1.1
- AWS SENSE
Selection of a code or standard is done by the designers or the engineers.
A correct welding code or standard is very necessary in order to judge a weld and compare the quality of the produced welded workpiece with that of ideal sample.
Conclusion:
The reason for selecting the correct welding code or standard is to judge the quality of weld.
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Problem 6 (Optional, extra 6 points)
150 mm
150 mm
120 mm
80 mm
60 mm
PROBLEM 18.103
A 2.5 kg homogeneous disk of radius 80 mm rotates with an
angular velocity ₁ with respect to arm ABC, which is welded
to a shaft DCE rotating as shown at the constant rate
w212 rad/s. Friction in the bearing at A causes ₁ to
decrease at the rate of 15 rad/s². Determine the dynamic
reactions at D and E at a time when ₁ has decreased to
50 rad/s.
Answer:
5=-22.01 +26.8} N
E=-21.2-5.20Ĵ N
Problem 1.
Two uniform rods AB and CE, each of weight 3 lb and length 2 ft, are welded to each other at their
midpoints. Knowing that this assembly has an angular velocity of constant magnitude c = 12 rad/s,
determine:
(1). the magnitude and direction of the angular momentum HD of the assembly about D.
(2). the dynamic reactions (ignore mg) at the bearings at A and B.
9 in.
3 in.
03
9 in.
3 in.
Answers: HD = 0.162 i +0.184 j slug-ft²/s
HG = 2.21 k
Ay =-1.1 lb; Az = 0; By = 1.1 lb; B₂ = 0.
Chapter 24 Solutions
Study Guide with Lab Manual for Jeffus' Welding: Principles and Applications, 8th
Ch. 24 - Why is it important to select the correct welding...Ch. 24 - What are codes and standards?Ch. 24 - What is the difference between welding codes or...Ch. 24 - What might influence the selection of a particular...Ch. 24 - As stricter standards are applied to the welding...Ch. 24 - What can happen if welding standards are lax?Ch. 24 - What are three commonly used codes?Ch. 24 - What is a WPS?Ch. 24 - Prob. 9RCh. 24 - What is the form called that records the...
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