G. J. Danek Jr. - Storming Media

AN OPTICAL TECHNIQUE FOR THE MEASUREMENT OF PLASTIC BENDING STRAINS AT ELEVATED TEMPERATURE

14 AUG 1961

Authors: G. J. Danek Jr.; H. H. Smith ; M. R. Achter; NAVAL RESEARCH LAB WASHINGTON D C

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IN CONNECTION WITH A STUDY OF HIGH-TEMPERATURE FATIGUE PROPERTIES IN CONTROLLED ENVIRONMENTS, AN OPTICAL METHOD BASED ON THE DETERMINATION OF THE RADIUS OF CURVATURE OF A STRAINED SHEETMETAL SPECIMEN HAS BEEN DEVELOPED FOR MEASURING BENDING STRAINS IN THE PLASTIC RANGE AT 1500 F. In order to establish the accuracy of the method, the optical strain measurements were compared with those made with a resistance strain gage at room temperature on ...