Maurice Tutor

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    Argosy University/ Phoniex University/
    Nov-2005 - Oct-2011

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    Phoniex University
    Oct-2001 - Nov-2016

Category > Management Posted 04 May 2018 My Price 6.00

excess internal pressure

A cylindrical tube in a chemical plant is subjected to an excess internal pressure of 6 MN m-2 , which leads to a circumferential stress in the tube wall. The tube wall is required to withstand this stress at a temperature of 510C for 9 years. A designer has specified tubes of 40 mm bore and 2 mm wall thickness made from a stainless alloy of iron with 15% by weight of chromium. The manufacturer’s specification for this alloy gives the following information.

 

Over the present ranges of stress and temperature the alloy can be considered to creep according to the equation

where A and Q are constants, R is the universal gas constant, and T is the absolute temperature. Given that failure is imminent at a creep strain of 0.01 for the present alloy, comment on the safety of the design.

 

Answers

Maurice Tutor
(5)
Status NEW Posted 04 May 2018 05:05 PM My Price 6.00

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