Deterioration evaluation method
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United States of America Patent
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Jan 24, 2023
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N/A
app pub date -
Jul 26, 2019
filing date -
Nov 7, 2018
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Abstract
A deterioration evaluation method includes a determination step of determining a shot peening condition for imparting a maximum residual stress to an object formed of a metal material; a first shot peening step of performing first shot peening on the object under the shot peening condition; a first measurement step of measuring a first residual stress of the object after the first shot peening step; a second shot peening step of performing second shot peening on the object after the first measurement step under the shot peening condition; a second measurement step of measuring a second residual stress of the object after the second shot peening step; and an evaluation step of evaluating deterioration of the object based on the first residual stress and the second residual stress.
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