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Title of article :
Stress concentration in a circular hole in composite plate
Author/Authors :
Lotfi Toubal، نويسنده , , Moussa Karama، نويسنده , , Bernard Lorrain، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2005
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Abstract :
A non-contact measurement method, namely electronic speckle pattern interferometer (ESPI), was used to investigate the tensile strain field of a composites plate in the presence of stress concentrations caused by a geometrical defect consisting of circular hole. ESPI uses the principle of 3D speckle interferometry to measure the deformation and contour of the measuring field with sub-micrometer accuracy. The ESPI technique clearly revealed the strain concentrations near the singularity. The experimental results are compared with the predictions of a theoretical model previously developed by Lekhnitskiiʹs and a finite element study.
Keywords :
Stress concentration , Interferometry speckle , Composites
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Link To Document :