アルミナ粒子分散エポキシ樹脂のブラスト・***ージョン特性と破壊じん性

概要

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The blast erosion behavior of epoxide composites was investigated by using a blating apparatus with Al_2O_3 particles and compared with that of epoxide reain with on filler. Three kind of Al_2O_3 powdera with the average oarticle size of 0.66, 5.7 and 24.2 μm were used as the filler. The experimental results showed that the lower the ductility of expoxide composites, the higrer was the volume erosion rate. The erosion damage peak of epoxide composites at nearly 30°of blast angle and the main erosion mechanisms were odserved to be cutting and cracking-Like detachment. It is considered that the blast erosion behavior of epoxide composites with Al_2O_3 filler may be mainly determined by the fracture toughness. It is also shown that the tensile strength of epoxide composites can be estimated simply by fracture mechanics analysis, based on the assumption of flaw introduction effeat by Al_2O_3 filler.
社団法人日本材料学会の論文
1990-06-15