Answered: 3.0 2.5 2.0 1.5 1.0 A2 MPa 0.5 2.8 MPa…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Question

For safe and reliable operation, a certain polypropylene pipe must withstand an internal pressure of
0.5 MPa for a minimum of three years. If the pipe diameter
is 100 mm, what is the minimum necessary wall thickness to
ensure that the pipe will not experience a strain greater than
1.3%? To solve this problem, use the accompanying graph that reveals the room temperature creep response for polypropylene.

3.0
2.5
2.0
1.5
1.0
A2 MPa
0.5
2.8 MPa
14 MPa/
102
10°
10
10 105 10° 107 10°
Time (seconds)
Strain (%)
14 MPa
12.6 MPa
11.2 MPa
98 MPa
8.4 MPa
MPa
5.6 MPa

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