Residual stress detection device and detection method thereof
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United States of America Patent
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Dec 6, 2022
Grant Date -
Jun 18, 2020
app pub date -
Dec 18, 2018
filing date -
Dec 18, 2018
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Abstract
A residual stress detection device for a curved surface coating and a detection method thereof is provided, where its structure includes: a detection piece carrier, configured to fix the detection piece, so that a to-be-detected point on the detection piece remains at a highest point; an X-ray generation source, radiating an X-ray to the to-be-detected point fixedly or along a path; a detection element, including a moving mechanism, where the moving mechanism moves the detection element along a path extending toward a direction orthogonal to an incident direction of the X-ray, so that the detection element receives and detects intensity of a diffraction X-ray at a position of the diffraction X-ray; and a stress calculation module, obtaining a strain value based on an intensity peak of the diffraction X-ray detected by the detection element, and calculating a residual stress value of the detection piece by using a formula.
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