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This investigation looked at the causes of delamination damage in the double cantilever beam standard test by the use of the strain energy release rate. The Rise Angle technique established the curve of the strain energy release rate. It is found that AE measurements and the damage to multidirectional laminates can result in a one-to-one correspondence when combining the AE detection findings with micro visualization. Through the investigation of the variations in the RA value, load, and strain energy release rate with the crack length, it is found that the AE parameters can precisely characterize delamination damage initiation.
Source link: https://europepmc.org/article/MED/35208021
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