閉形紋理 的英文怎麼說
中文拼音 [bìxíngwénlǐ]
閉形紋理
英文
close-grained-
The microscopic plastic deformation of the local crazes cause the change of crack opening loads. therefore, the fatigue crack closure concept could be introduced. a crack closure model of mdyb - 3 pmma were recommended and phenomenologically formulated for positive and negative stress ratios separately, according to the testing results of fatigue crack propagation
本文討論了有機玻璃疲勞裂紋擴展機理,提出,銀紋的形成是裂紋形成和擴展的基礎,從微觀上解釋了裂紋形成和擴展的原因,並結合金相分析結果,明確提出塑變誘導閉合和粗糙誘導閉合是有機玻璃疲勞裂紋面閉合的兩個主要原因,成功的解析了裂紋面的閉合現象。
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