DTIC AD0661814: A METHOD OF MEASURING CRACK pdf

DTIC AD0661814: A METHOD OF MEASURING CRACK

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A method of measuring the rate of crack propagation is described. The method, applicable to any specimen having a smooth surface across which brittle-type fracture will occur, is accomplished by means of a fine gridwork of conducting lines applied to the specimen by various vacuum deposition techniques. When a potential is applied to the grid, a direct reading of current (or distance) versus time is obtained with a strip chart recorder or equivalent device. The method has been applied to the study of brittle-type fracture associated with stress corrosion cracking observed in titanium alloys

• Creator/s: Defense Technical Information Center
• Date: 5/1/1967
• Year: 1967
• Book Topics/Themes: DTIC Archive, Lowry, Ned M, BOEING COMMERCIAL AIRPLANE CO RENTON WA, *CRACK PROPAGATION, BRITTLENESS, CRACKS, FRACTURE(MECHANICS), MEASUREMENT, STRESS CORROSION, SURFACE PROPERTIES, TITANIUM ALLOYS, VACUUM APPARATUS

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