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由于玻璃钢层板在垂直于层合面方向上没有纤维与织物,故其层间强度和韧性成为玻璃钢复合材料的薄弱环节。产品设计者、建造者和检验者对此都甚为关注。据文献报导,大多数复合材料的破坏均来源于层间区的损伤。这种损伤亦严重地危及玻璃钢的疲劳寿命和断裂韧性,所以有关部门十分重视玻璃钢结构可靠的层间强度和韧性数据。 当前国内外尚未公布一套标准化的试验方法,关于损伤机制和改善居间性能的文献资料也很少。当然ASTM已公布缠绕玻璃钢短梁剪
As FRP laminates in the direction perpendicular to the absence of fiber and fabric, so the interlayer strength and toughness of the FRP composite material as the weakest link. Product designers, builders and testers are all very concerned about this. It has been reported in the literature that most of the composites are damaged by interlaminar zone damage. This damage also seriously endanger the FRP fatigue life and fracture toughness, so the relevant departments attach great importance to the reliability of FRP interlayer strength and toughness data. At present, a set of standardized test methods have not been published at home and abroad, and there are few documents on damage mechanism and improvement of intermediate performance. Of course, ASTM has announced a winding glass fiber steel short beam shear