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ASM Handbook

Mechanical Testing and Evaluation

Edited by
Howard Kuhn
Howard Kuhn
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Dana Medlin
Dana Medlin
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ASM International
Volume
8
ISBN electronic:
978-1-62708-176-4
Publication date:
2000
Book Chapter

Fundamental Aspects of Torsional Loading

By
John A. Bailey
John A. Bailey
North Carolina State University
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Jamal Y. Sheikh-Ahmad
Jamal Y. Sheikh-Ahmad
Wichita State University
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Published:
2000
Page range:
115 - 123

Abstract

Torsion tests can be carried out on most materials, using standard specimens, to determine mechanical properties such as modulus of elasticity in shear, yield shear strength, ultimate shear strength, modulus of rupture in shear, and ductility. This article discusses the torsional deformation of prismatic bars of circular cross-section and torsional response of prismatic bars of noncircular cross-section. It analyzes the elastic deformation, plastic deformation, and the effect of strain rate on plastic deformation. The article describes the theory of anisotropy in plastic torsion and the various components of a torsion testing machine. These include drive system, test section, torque and rotational displacement transducers, and rigid frame.

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John A. Bailey, Jamal Y. Sheikh-Ahmad, 2000. "Fundamental Aspects of Torsional Loading", Mechanical Testing and Evaluation, Howard Kuhn, Dana Medlin

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