About this Abstract |
Meeting |
2021 TMS Annual Meeting & Exhibition
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Symposium
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Mechanical Response of Materials Investigated through Novel In-situ Experiments and Modeling
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Presentation Title |
In-situ Experimental Evaluation of Residual Stresses in Composites during Autoclave Manufacturing |
Author(s) |
Sandeep Chava, Sirish Namilae, Marwan Al-Haik |
On-Site Speaker (Planned) |
Sandeep Chava |
Abstract Scope |
Residual stresses are generated within a thermosetting composite laminate during autoclave cure due to the differences in thermal expansion properties of fibers and matrix as well as cure shrinkage of the matrix. These stresses can be significant enough to distort the dimensions of the laminate, which could result in processing induced defects. It is essential to understand the evolution of these residual stresses during processing to optimize the manufacturing process to reduce processing defects. In this research, processing induced residual stresses in the composite laminates are evaluated by devising a novel in-situ experimental approach. Composite laminates are cured in a custom-designed autoclave with viewports. The residual strains during the cure are characterized in-situ using Digital Image Correlation (DIC) through the viewports. The resulting residual stresses are calculated using laminate theory. Methods for altering residual stresses including modifying carbon fiber surfaces with ZnO nanorods will be discussed. |
Proceedings Inclusion? |
Planned: |
Keywords |
Composites, Process Technology, Mechanical Properties |