Freeze-Warping Box - Measuring the Deflection of a Composite Specimen
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The freeze-warping box is used to measure the bi-material deflection of a small composite specimen beam during a freeze-thaw cycle. This bi-material deflection is caused by the thermal mismatch between the composite's different materials. Their thermal mismatch can be detrimental during temperature changes, resulting in thermal stresses in the composite. The freeze-warping box combined with the bi-material bending theory can be used to measure this thermal stress.