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ASM Handbook

Materials Selection and Design

Edited by
George E. Dieter
George E. Dieter
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ASM International
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Book Chapter

Performance Indices

M.F. Ashby
M.F. Ashby
Engineering Design Centre, Cambridge University
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Page range:
281 - 290


This article defines performance indices in a formal way and specifies how they are derived. The performance indices for a light, strong tie and a light, stiff beam are presented. The article provides two case studies that illustrate the use of material indices, shape factors, and selection charts to select materials.

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M.F. Ashby, 1997. "Performance Indices", Materials Selection and Design, George E. Dieter

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