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《Acta Armamentarii》 2008-12
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Microscopic Study of Ground Surfaces of Drilled Holes in Fibre Reinforced Plastics

ZHENG Lei1,YUAN Jun-tang2,WANG Zhen-hua2 (1.Key Laboratory of Advanced Manufacturing and Automation Technology,Ludong University,Yantai 264025,Shandong,China;2.School of Mechanical Engineering,Nanjing University of Science and Technology,Nanjing 210094,Jiangsu,China)  
A scanning electron microscope(SEM) was used to observe the ground surfaces of drilled holes in fibre reinforced plastics(FRP) by using a sintered diamond drill,and accordingly the fracture mechanisms of glass fibre and Kevlar fibre,and the microscopic characteristics of ground surfaces were studied.The SEM observations show that there are six kinds of broken appearances for glass fibre and seven kinds for Kevlar fibre;the ground surface of FRP can be divided into two kinds of area,namely the area covered with polymer resin matrix and the area dominated by broken fibres,with three kinds of fibre fracture area found.To a certain extent,the results achieved in this paper reveal the drilling mechanism of FRP.
【CateGory Index】: TB332
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