Uncertainty Evaluation in Tensile Strength Measurement of Carbon Fiber Composites
In order to evaluate the reliability of the test results of tensile strength of carbon fiber composites and find out the main factors affecting the test process for tensile strength of composite materials,the unidirectional com-posite samples prepared by imported T800S carbon fiber are taken as samples,and various uncertainties introduced in the test process are calculated by establishing a mathematical model.The synthetic standard uncertainty and extended uncertainty of tensile strength test of carbon fiber composites are obtained.The results show that the extension uncer-tainty of the tensile strength of imported T800S carbon fiber composites is(1,859±95.6)MPa,which mainly comes from the repeatability of the thickness measurement and the repeatability of the strength measurement.
repeatability of tensile strength results of carbon fiber composites
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