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1. In a tensile test, two pairs of values of stress and strain were measured for the specimen metal after it had yielded: (1) true stress = 240 MPa and true strain = 0.30, and (2) true stress = 260 MPa and true strain = 0.59. Based on these data points, determine the strength coefficient and strain-hardening exponent.

1. In a tensile test, two pairs of values of stress and strain were measured for the specimen metal after it had yielded: (1) true stress = 240 MPa and true strain = 0.30, and (2) true stress = 260 MPa and true strain = 0.59. Based on these data points, determine the strength coefficient and strain-hardening exponent.

Elements Of Electromagnetics
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 2 2.1. In a tensile test, two pairs of values of stress and strain were measured for the specimen metal after it had yielded: (1) true stress = 240 MPa and true strain = 0.30, and (2) true stress = 260 MPa and true strain = 0.59. Based on these data points, determine the strength coefficient and strain-hardening exponent. 2.2. If the average flow stress is the 70% of the final flow stress after deformation, determine the value of the strain hardening for the required flow stress. 2.3. Describe the Extrusion process in metal forming.
Transcribed Image Text:Question 2 2.1. In a tensile test, two pairs of values of stress and strain were measured for the specimen metal after it had yielded: (1) true stress = 240 MPa and true strain = 0.30, and (2) true stress = 260 MPa and true strain = 0.59. Based on these data points, determine the strength coefficient and strain-hardening exponent. 2.2. If the average flow stress is the 70% of the final flow stress after deformation, determine the value of the strain hardening for the required flow stress. 2.3. Describe the Extrusion process in metal forming.
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