The strain tensor Section 1.

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Presentation transcript:

The strain tensor Section 1

Why do we need to know about elasticity?

Strain tensor for small deformations

How do we measure strain? Strain Gauges From James T. Humprhies and Leslie P. Sheets, Industrial Electronics 4th Ed. (Delmar, Albany NY, 1993)

Edward Simmons, former Caltech ME graduate student, invented the bonded wire resistance strain gage in 1936.

Dr. Simmons, creator of a billion dollar industry, first adopted by aerospace, helped win WWII

Range of Gauge Factor Values