Abstract

The results of an experimental analysis of the effect of the volume content of voids in the range of 0.25–5% on the crack resistance of structural carbon plastics are presented. To obtain a variation of the volume content of voids, samples were manufactured using the vacuum-infusion method with variations in the vacuum strength from –760 to –150 mm Hg. The total volume content of voids was determined by methods of optoacoustic structuroscopy, scanning electron microscopy, and chemical etching to obtain comparative data. The experimental dependences of the characteristics of the interlaminar crack resistance on the volume content of voids under static and cyclic loading of samples in the normal-separation mode were obtained.

中文翻译：

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应用光声方法评估空隙对结构碳塑料抗裂性的影响

摘要

给出了对0.25–5％的空隙体积含量对结构碳塑料的抗裂性影响的实验分析结果。为了获得空隙体积的变化，使用真空注入方法制造了样品，其真空强度在–760至–150 mm Hg之间变化。空隙的总体积含量通过光声结构法，扫描电子显微镜和化学蚀刻法确定以获得比较数据。在正常分离模式下，获得了层间抗裂特性对样品在静态和循环载荷下空隙体积含量的实验依赖性。