Residual Stress Determination
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Objective
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Dertermine curing residual stresses and optimize curing cycle to reduce/or control them. |
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Set up analytical model to predict residual stress development during cure. |
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Measure material properties, e.g., relaxation moduli, coefficients of thermal expansion. |
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Measure strains during curing with embedded strain gagesand fiberoptic sencors (Fobry-Perot). |
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Compare predictions with experimental results. |
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Combine residual stress and curing model to optimize curing cycle. |
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Relation
between curing cycle and degree of cure
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Strain
development in unidirectional laminate
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Residual
strain during curing in crossply laminate
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