湿热对改性界面玻璃-环氧复合材料力学行为和断口形貌的影响( Some hygrothermal effects on the mechanical behaviour and fractography of glass-epoxy composites with modified interface )

S Kaushal K Tankala RMVGK Rao Kishore Experimental/ adhesion composite material interfaces filled polymers fractography fracture mechanics glass fibre reinforced plastics heat treatment laminates moisture scanning electron microscope examination of materials/ hygrothermal effects mechanical behaviour fractography modified interface glass fibre-reinforced epoxy composites aerosil powder filler material fracture mode scanning electron microscopy interlaminar shear stress fibre volume fraction moisture dry heat adhesion coated laminates/ A8140N Fatigue, embrittlement, and fracture A8170 Materials testing A8190 Other topics in materials science A6220M Fatigue, brittleness, fracture, and cracks A8140G Other heat and thermomechanical treatments

研究了玻璃纤维增强环氧复合材料的力学性能。研究了气浮粉体作为填充材料的作用，并用扫描电镜分析了其断裂方式。研究表明，当纤维体积分数较高时，层间剪应力显著下降，而填充材料的引入不会引起变化。表面垫层增强试样的剪应力略有增加。对于较高的纤维体积分数，暴露在水分下的层间剪应力值降低得更快，从而突出了界面区域的作用。涂层和未涂层纤维的冲击值随暴露于干热呈现相同的趋势，前者总是记录较低的值。纤维含量越高，冲击值随吸湿量的增加而减小越快。断口形貌显示涂层层合板的粘结性差。

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