Question 12 / 40:  Which of the following are well-established experimental tools for determining localized strains in engineering pieces? I. Localized electrical resistance measurements in strain gauges II. Optical methods based on photoelasticity III. Ultrasonic displacement mapping IV. X-ray or computed tomography
A  II only
B  Both II and III
C  Both I and IV
D  Both I and II
E  I, II, III, and IV
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Explanation:

Electrical strain gauges are the most common tools used, because they are simple and inexpensive. However, the data that they provide is limited. You may refer to the reading for sub-subunit 3.3.2 for additional information.

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Mechanics I ME102

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Attribution:  Stephanie Redfern, Ranjeet (Ron) Agarwala, and Dr. Steve Gibbs. Mechanics I. The Saylor Academy 2014, http://www.saylor.org/courses/me102/
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