P2 The stress history for a part under cyclic loading shows 10 cycles at stress amplitude of 400 with a mean stress of 400 followed by 1 cycle at stress amplitude of 290 and mean stress of 510. Find the number of repetitions before failure (Br) using Palmgren-Miner Rule. Use (a) Morrow and (b) SWT. Assume AISI 4340 steel. I

P2 The stress history for a part under cyclic loading shows 10 cycles at stress amplitude of 400 with a mean stress of 400 followed by 1 cycle at stress amplitude of 290 and mean stress of 510. Find the number of repetitions before failure (Br) using Palmgren-Miner Rule. Use (a) Morrow and (b) SWT. Assume AISI 4340 steel. I

Steel Design (Activate Learning with these NEW titles from Engineering!)

6th Edition

ISBN:9781337094740

Author:Segui, William T.

Publisher:Segui, William T.

Chapter1: Introduction

Section: Chapter Questions

Problem 1.5.3P: A tensile test was performed on a metal specimen having a circular cross section with a diameter 0....

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A tensile test was performed on a metal specimen having a circular cross section with a diameter 0. 510 inch. For each increment of load applied, the strain was directly determined by means of a strain gage attached to the specimen. The results are, shown in Table: 1.5.1. a. Prepare a table of stress and strain. b. Plot these data to obtain a stress-strain curve. Do not connect the data points; draw a best-fit straight line through them. c. Determine the modulus of elasticity as the slope of the best-fit line.
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