碳纤维复合材料曲梁冲击后四点弯曲强度及损伤失效模式研究

玻璃钢/复合材料 ›› 2017, Vol. 0 ›› Issue (3): 17-20.

碳纤维复合材料曲梁冲击后四点弯曲强度及损伤失效模式研究

马丽婷, 陈新文, 王翔, 郭广平

北京航空材料研究院,材料检测与评价航空科技重点实验室,航空材料检测与评价北京市重点实验室,北京100095

收稿日期:2016-10-28 出版日期:2017-03-28 发布日期:2017-03-28
通讯作者: 郝文峰(1985-),男,博士,工程师,主要从事实验力学、复合材料力学方面的研究,haowenfeng2007@163.com。
作者简介:马丽婷(1977-),女,硕士,工程师,主要从事非金属材料力学性能测试及寿命预测技术方面的研究。。
基金资助:
国家自然科学基金(11502260,11672279)

STUDY ON THE POST IMPACT CURVED BEAM STRENGTH AND FAILURE MODE OF CARBON/EPOXY LAMINATES

MA Li-ting, CHEN Xin-wen, WANG Xiang, GUO Guang-ping

Beijing Key Laboratory of Aeronautical Materials Testing and Evaluation, Beijing Institute of Aeronautical Materials, Beijing 100095, China

Received:2016-10-28 Online:2017-03-28 Published:2017-03-28

摘要/Abstract

摘要： 通过四点弯曲试验和落锤冲击试验,研究了复合材料层合曲梁冲击前后四点弯曲强度及其破坏模式。不仅通过超声C扫描分析了不同内径复合材料层合曲梁试件冲击后的损伤特征,而且分析了冲击损伤对层合曲梁强度及层间最大应力的影响;同时,通过数字散斑相关方法得到复合材料层合曲梁在四点弯曲载荷作用下的变形场以及失效模式。研究结果将为复合材料层合曲梁在飞行器结构中的应用提供有价值的实验依据。

关键词: 复合材料层合曲梁, 强度, 低速冲击, 四点弯曲, 数字散斑相关方法

Abstract: In this paper, the curved beam strength and strength-after-impact characteristics of carbon/epoxy laminated curved beams were studied experimentally using four-point bending test and low velocity impact. First, the post impact damage characterizations of the laminated curved beams with different radii were analyzed based on ultrasonic C-scan images. Second, the effect of impact damage on both the failure strength and the maximum interlaminar radial stresses of the laminated curved beams were investigated. Finally, the full field displacement distributions of the laminated curved beams were obtained using Digital Speckle Correlation Method (DSCM). Experimental results play a significant role for strength evaluating of laminated curved beams with and without impact damage.

Key words: laminated curved beam, curved beam strength, low velocity impact, four-point-bending, digital speckle correlation method

中图分类号:

TB332

马丽婷, 陈新文, 王翔, 郭广平. 碳纤维复合材料曲梁冲击后四点弯曲强度及损伤失效模式研究[J]. 玻璃钢/复合材料, 2017, 0(3): 17-20.

MA Li-ting, CHEN Xin-wen, WANG Xiang, GUO Guang-ping. STUDY ON THE POST IMPACT CURVED BEAM STRENGTH AND FAILURE MODE OF CARBON/EPOXY LAMINATES[J]. Fiber Reinforced Plastics/Composites, 2017, 0(3): 17-20.

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