田口實驗法應用於抗彈複合材料性能參數之研究
| Autor: | Kung Yao-Chiu, 龔耀秋 |
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| Rok vydání: | 2000 |
| Druh dokumentu: | 學位論文 ; thesis |
| Popis: | 88 The purpose of this thesis is to explore the influence of parameters of ballistic resistance of composite materials with the Taguchi method by using the least number of experiment and cost. The orthogonal array of Taguchi method is used to organize the experiment and the ballistic resistance limit velocity Vp50 of composite material Kevlar 29 which is obtained according to the U.S. military standard of Vp50 ballistic test for armor “MIL-STD-662F”. The Vp50 test data are used to do the controllable factors（parameters） of signal to noise ratio(S/N) analysis in order to understand the influence of controllable factors of the materials. The contribution rate of each controllable factor is estimated by analysis of variance（ANOVA）. The optimal factors are chosen and the finished Kevlar 29 plate is verified by experiment to be the best. The ballistic resistance composite material explored in this thesis is the “Aramid” fiber of polymer matrix composite. The controllable factors include alignment mode, number of layers, and thermal pressure. Each of the factors consists three levels. We can use the L9(34) of orthogonal array to design this experiment and to build 9 different level testing samples. Once the value of Vp50 of each testing sample is obtained, we can do S/N ratio and ANOVA analysis by using the quality loss function of The-Larger-The-Better characteristics. It is found that the optimal factors of ballistic resistance material of Kevlar 29 plate were 38 layers, cross-ply laminate, and the thermal pressure of 100 kg/cm2. The most influence of controllable factors is layers, the second is alignment mode and the least is thermal pressure. The influence of the thermal pressure is so little that it can be neglected. This study explored the parameters of ballistic resistance of composite materials by using Taguchi method. Not only we can obtain the influence effect of each controllable factor with least experiments, that is help to understand the ballistic resistance behavior of composite materials, but also we save both the cost and time of experiments in this research. This reliable and economical method should be considered by future researchers in choosing the experimental way. |
| Databáze: | Networked Digital Library of Theses & Dissertations |
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