孔隙对复合材料层压板湿热性能影响.pdfVIP

Material Sciences 材料科学, 2011, 1, 71-76 doi:10.4236/ms.2011.12014 Published Online July 2011 (/journal/ms/) Influence of Void on the Hygrothermal Behaviour of Composite Laminates 1* 2 2 3 3 Baochang Wu , Hongyan Zhu , Lihong Liu , Yuyong Chen , Dongxing Zhang 1Representative office in 122 factory, Harbin 2Harbin Aircraft Industry Co., Ltd., Harbin 3School of Materials Science and Engineering, Harbin Institute of Technology, Harbin Email: baochangwu@126.com; hongyanzhu5@ Received: Apr. 12th, 2011; revised: May 28th, 2011; accepted: Jun. 1st, 2011. Abstract: The influence of void on the moisture absorption, desorption and interlaminar shear strength (ILSS) of [(±45)/(0,90) /(±45)] and [(±45)/0 /(±45)/(0,90)] composite laminates used in a aircraft was investigated. 2 S 4 S The results show that the rate of water uptake and the maximum level of moisture absorption in the two lami- nates increase with the increasing void content. Expand occurs in the two laminates after moisture absorption, and cracks were found on the surface of laminates. Most of cracks locate at the rich resin between the plies. Cracks can also be found around voids in the laminates and propagate between voids. Some water retained in the composite laminates after desorption and more water was kept in the laminates with larger void content. The ILSS of laminates with different void content varied complexly with the mass gain of moisture absorption. Keywords: Polymer-matrix Composites; Porosity; Environmental Degradation; Mechanical Properties 孔隙对复合材料层压板湿热性能的影响