Home / Questions / A thin walled steel cylindrical pressure vessel with a radius of 800 mm and a wall thickne...
A thin walled steel cylindrical pressure vessel with a radius of 800 mm and a wall thickness of 38 mm is designed to carry an internal pressure of 8 MPa. The steel has a fracture toughness of 95 MPa ,/m and a yield strength of 520 MPa. For this material take the exponent in Paris relation, m = 3 and the coefficient, C= 10-11.
Answer the following questions, stating clearly how you obtained each answer.
• i.What is the maximum crack length through the wall that the vessel can tolerate when operating at the maximum internal pressure to give a reserve factor of 2.5 on the load? • ii.On inspecting the vessel, a welding defect in the shape of a through-thickness edge crack is discovered and is measured to be 4 mm long. Determine how many pressurising cycles will it take for the crack to grow to the size determined in part (i) if the vessel is regularly cycled to 90% of its maximum internal pressure? iii.When the crack has grown to 6.0 mm the vessel is accidently subjected to 100 overload cycles equal to 436 MPa. Again using the fatigue calculator, determine what length the crack will grow to during these overload cycles? What is the percentage reduction in life as found in part (ii) due to these overload
May 16 2020 View more View Less
Partially CorrectCheck My WorkProblem 2-21Suppose that the average waiting time for a patient at a physician's office is just over 29 minutes. In order to address the...
Aug 01 2020Past experience shows that 30% of the customers entering Harry’s Clothing Store will make a purchase. Of the customers who make a purchase, 85% use credit cards. Let X be...
Aug 03 2020In a competitive market, the current equilibrium price is $10 per unit. A firm that produces Q units of output in this market has a short-run Total Cost (TC) given by TC ...
Jun 02 2020George Company was started on January 1, 2013, when it acquired $8,000 cash by issuing common stock. During 2013, the company earned cash revenues of $3,500, paid cash ex...
Jan 25 2020The bond energy for a C—H bond is about 413 kJ/mol in CH 4 but 380 kJ/mol in CHBr 3 . Although these values are relatively close in magnitude, they are different. Explain...
Jun 14 2021Mention the importance of improving quality and performance while demonstrating value
Apr 19 2021Compute the NPV for Project M if the appropriate cost of capital is 9.15 percent. (Do not round intermediate calculations and round your final answer to 2 decimal place.)...
May 15 2021On July 9, Mifflin Company receives a $9,500, 120-day, 6% notefrom customer Payton Summers as payment on account. Compute theamount due at maturity for the note.
Mar 22 2020Sketch the solid described by the given inequalities.
Jun 25 2021Prepare journal entries to record the following transactions by Ericton Industries: 2014 Jan. 20 Accepted a $ 170,000, 90-day, 9% note dated this day in granting a time e...
Apr 17 2020