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本文指出如何应用声发射技术来估计裂纹尖端附近的应力强度因子 K_(?)本实验采用声发射检测30CrMnSiNi 高强度钢恒 K_1试样的应力腐蚀开裂。得到声发射和应力强度因子间的关系是 N=(1/(K_(1scc)~b)K_1~bt+C,b 和 K_(1scc)从两个不同的侧面说明材料抗应力腐蚀的能力。该关系与4340钢氢脆和应力腐蚀的声发射结果符合甚佳。
This paper points out how to use acoustic emission technique to estimate the stress intensity factor K_ (?) Near the crack tip. In this experiment, the stress corrosion cracking of 30CrMnSiNi high strength steel constant K_1 was detected by acoustic emission. The relationship between the acoustic emission and the stress intensity factor is given by N = (1 / (K 1scc) ~ b) K 1 ~ bt + C, b and K 1scc illustrate the material’s resistance to stress corrosion from two different sides. This relationship is in good agreement with the acoustic emission results of 4340 Steel Hydrogen Embrittlement and Stress Corrosion.