A solid round bar, 25 mm in diameter, has a groove 2.5-mm deep with a 2.5-mm radius machined into it. The bar is made of AISI 1018 CD steel and is subjected to a purely reversing torque of 200 N m. For the S-N curve of this material, let f = 0.9. (a) Estimate the number of cycles to
A solid round bar, 25 mm in diameter, has a groove 2.5-mm deep with a 2.5-mm radius machined into it. The bar is made of AISI 1018 CD steel and is subjected to a purely reversing torque of 200 N • m. For the S-N curve of this material, let f = 0.9.
(a) Estimate the number of cycles to failure.
(b) If the bar is also placed in an environment with a temperature of 450°C, estimate the number of cycles to failure.
(a) Estimate the number of cycles to failure.
(b) If the bar is also placed in an environment with a temperature of 450°C, estimate the number of cycles to failure.
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Related Book For 
Manufacturing Processes for Engineering Materials
5th edition
Authors: Serope Kalpakjian, Steven Schmid
ISBN: 978-0132272711