Experimental investigation on compressive properties of three-dimensional five-directional braided composites in hygrothermal environment

IF 1.9 4区材料科学 Q3 Materials Science

Science and Engineering of Composite Materials Pub Date : 2022-01-01 DOI:10.1515/secm-2022-0153

Yinggui Guo, S. Yan

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引用次数: 2

Abstract

Abstract This article describes work concerning the compressive properties in hygrothermal environment of three-dimensional (3D) five-directional braided composites. Hygrothermal aging tests at temperatures of 40, 60, and 80°C and compression tests were carried out on the specimens with three braiding angles of 15, 25, and 35°. The surface morphologies of the samples taken using scanning electron microscope before and after the hygrothermal aging test were used to analyze the influence of the hygrothermal environment on the internal structure of braided composites. The experimental results indicate that the hygrothermal environment has a more influence on the specimens with a braiding angle of 15°, and the greater the moisture absorption percentage, the lower the retention ratios of compressive strength and modulus. Compared with room temperature, the compressive strength and modulus of specimens with a braiding angle of 15° reduced by 72.2 and 82.7% as the water bath temperature increased from 40 to 80°C. Moreover, the failure mechanisms of 3D five-directional braided composites in the hygrothermal environment were analyzed.

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三维五向编织复合材料在湿热环境下压缩性能的实验研究

摘要本文介绍了三维五向编织复合材料在湿热环境中的压缩性能研究工作。在40、60和80°C的温度下对试样进行湿热老化试验，并对编织角度为15、25和35°的试样进行压缩试验。利用扫描电子显微镜在湿热老化试验前后采集的样品表面形貌，分析了湿热环境对编织复合材料内部结构的影响。实验结果表明，湿热环境对编织角为15°的试样影响较大，吸湿率越大，抗压强度和模量的保持率越低。与室温相比，当水浴温度从40℃升高到80℃时，编织角为15°的试样的抗压强度和模量分别降低了72.2%和82.7%。分析了三维五向编织复合材料在湿热环境中的失效机理。

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来源期刊

Science and Engineering of Composite Materials 工程技术-材料科学：复合

CiteScore

3.10

自引率

5.30%

发文量

审稿时长

4 months

期刊介绍： Science and Engineering of Composite Materials is a quarterly publication which provides a forum for discussion of all aspects related to the structure and performance under simulated and actual service conditions of composites. The publication covers a variety of subjects, such as macro and micro and nano structure of materials, their mechanics and nanomechanics, the interphase, physical and chemical aging, fatigue, environmental interactions, and process modeling. The interdisciplinary character of the subject as well as the possible development and use of composites for novel and specific applications receives special attention.