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TENSILE STRENGTH DETERMINATION FOR WOVEN GLASS/EPOXY COMPOSITE LAMINATES AT CRYOGENIC TEMPERATURES USING THE OPEN HOLE SPECIMENS

Yasuhide ShindoShinya WatanabeTomo TakedaFumio NaritaTakuya MatsudaSatoru Yamaki

Department of Materials Processing,Graduate School of Engineering,Tohoku University

摘要:We study numerically and experimentally the tensile strength properties of woven glass fiber reinforced polymer (GFRP) composite laminates at cryogenic temperatures using the open hole specimens. Tensile tests were carried out on specimens with a circular hole at room temperature, liquid nitrogen temperature (77 K) and liquid helium temperature (4 K). The length of the hole edge damage zone corresponding to the specimen failure was then determined by the microscopic examinations of the fracture surfaces. A method based on finite element analysis was also developed for estimating the cryogenic tensile strength of the unnotched woven laminates by the use of experimentally determined failure load and damage zone length. It is shown that the tensile strength of woven composite laminates at cryogenic temperatures can be determined effectively by this approach.
会议名称:

第九届中日复合材料学术会议(CJJCC-9)

会议时间:

2010-09-06

会议地点:

中国内蒙古呼和浩特

  • 专辑:

    工程科技Ⅰ辑

  • 专题:

    材料科学

  • 分类号:

    TB332

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