POLARIZATION-OPTICAL METHOD OF INVESTIGATING STRESSES AND DEFORMATIONS.
FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO
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The object of the invention is a polarization-optical method of investigating stresses and deformations. For the purpose of simultaneously investigating the elastic and the plastic stresses and deformations. The surface of the specimen intended for investigation is covered by a layer of pure metal on which afterwards one applies a layer of material for studying the deformations and the observations are made in reflected light. Author