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首页> 外文期刊>日本セラミックス協会学術論文誌 >Effect of the Surface Force on Subcritical Crack Growth in Glass
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Effect of the Surface Force on Subcritical Crack Growth in Glass

机译:表面力对玻璃亚临界裂纹扩展的影响

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摘要

The effect of the surface force on subcritical crack growth in glass was investigated in various aqueous solutions. Microcracks were induced on the glass surface by indentation method, which enabled to determine the fatigue limit, K_(scc), with good precision. K_(scc) values obtained in solutions containing K~+ or Na~+ ions showed that a different factor other than the surface force dominates the crack growth. For solutions containing Li~+ or Cs~+ ions, a trend opposite to that predicted by the surface force theory was observed, which also suggests that the surface force does not affect the crack growth. For solutions containing n-alkyl-trimethyl-ammonium ions the effect of the surface force on subcritical crack growth was almost negligible, namely in the range 0.010-0.027 MPa centre dot m~(1/2) in the region of an applied stress intensity factor >0.25 MPa centre dot m~(1/2).
机译:在各种水溶液中,研究了表面力对玻璃中亚临界裂纹扩展的影响。通过压痕法在玻璃表面产生了微裂纹,从而可以高精度地确定疲劳极限K_(scc)。在含有K〜+或Na〜+离子的溶液中获得的K_(scc)值表明,除了表面力以外,其他因素主导了裂纹扩展。对于包含Li〜+或Cs〜+离子的溶液,观察到与表面力理论所预测的趋势相反的趋势,这也表明表面力不影响裂纹扩展。对于含正烷基三甲基铵离子的溶液,表面力对亚临界裂纹扩展的影响几乎可以忽略不计,即在施加应力强度的区域内,中心点m〜(1/2)在0.010-0.027 MPa的范围内系数> 0.25 MPa中心点m〜(1/2)。

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