A new test method and a measurement system was proposed and developed to evaluate the bending and twisting properties of textile fabrics. The measurement system and the test method is based on the mechanical device, sensors and microelectronics and simulates the dynamic process during the fabric is bent and twisted. The virtual instrument based system can measure the dynamic changes of the signals due to the bending and twisting loads. Derived from the test data, a series of indices are defined to characterize the bending and twisting properties. The test and evaluation method, the experiments and the test results are reported. The analysis of the variance for intra-laboratory test was performed to determine the precisions of the test method and the measurement system. The measurement system provides a method for objective measurement and evaluation of bending and twisting properties of textile fabrics.
A new test method and a measurement system were proposed, which can be used to characterize the surface friction properties of textile materials such as fabrics. The measurement system simulates the dynamic friction contacts between the skin and fabrics under a variety of test conditions in a mechanical measuring device with measuring head and a slider, and can measure both the static and dynamic coefficient of friction of textile materials automatically. A series of indices were defined to characterize the friction performance of the textile materials. The measurement principle, the evaluation method, the experiments and the test results were introduced. The test results show that there are significant differences in the surface friction properties among the fabrics to all indices.
A new test method and a measurement system FTRT (Fabric Thermal Regulating Tester) has been developed to evaluate the thermal regulating properties of textile materials such as fabrics treated with PCM (Phase Change Material) microcapsules. The measurement system and the test method can measure the temperature, heatflux and displacement signals that can give an overall evaluation for the fabric thermal regulating properties. Derived from the test data, a series of indices are defined to characterize the thermal regulating properties. The test and evaluation method, the experimental setup and the gage capability analysis of the measurement system are reported. The analysis of the variance for intra laboratory test was performed to determine the precision of the test method and the measurement system. The measurement system FTRT provides a method for objective measurement and evaluation of thermal regulating properties of textile materials.
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