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A Plastic Appliqué's Strain Field Determination by Experimental Shearographic Analyses Under an Applied Thermal Load
Technical Paper
2005-01-2066
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
The objective of this paper is to develop a test capable of ranking lift-gates based on strain concentration levels reflected in fringe characteristics in the known stress/strain concentration and fracture vicinity. First, the system (lift gate glass, adhesive and appliqué) is chosen as test sample since the subsystem (local appliqué) does not exhibit the failure mode observed in the field test. Subsequently, it has been identified that the thermal component (rather than mechanical) is the predominant load by laser scanning vibrometry and confirmed via field test data. Next, digital shearography has been selected as the measurement and visualization tool of strain distribution due to its various advantages such as full field view and non-contact advantages. Finally, the test method has been applied to rank and optimize the structural configuration around appliqués' to reduce / eliminate failure.
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McKillip, D., Chen, F., and Karwande, V., "A Plastic Appliqué's Strain Field Determination by Experimental Shearographic Analyses Under an Applied Thermal Load," SAE Technical Paper 2005-01-2066, 2005, https://doi.org/10.4271/2005-01-2066.Also In
References
- Steinchen Wolfgang Yang Lianxiang “Digital Shearography” SPIE press 2003
- Hung Y.Y. “Shearography for Rapid NonDestructive Evaluation of Bonded Composite Structures” Society of Automotive Engineers, 1999-01-1254
- Hung Y.Y, “Evaluation of Residual Stresses in Plastics and Composites By Shearography” Society of Automotive Engineers, 1999-01-1254