Technique for measuring instantaneous angular deflection of object requires no physical contact. Technique utilizes two flat refractors, converging lens, and different photocell. Distinction of method is its combination of optical and electromechanical components into feedback system in which measurement error is made to approach zero. Application is foreseen in measurement of torsional strain.
Noncontact measurement of angular deflection
NASA Tech Briefs ; 3 , 1
1978-06-01
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Englisch
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