Abstract Digital Image Correlation (DIC), Acoustic Emission and Electrochemical Noise measurements were applied to study the growth of multiple intergranular cracks as a colony on an Alloy 600 in a tetrathionate solution. Cracks exceeding 55 μm in length and 0.45 μm in opening were successfully detected by DIC. Moreover, crack population was classified into initiating, active and dormant cracks, active population being the larger one. The emergence and intensification of interactions produced a modification on the colony growth behavior. They range from a mostly surface crack propagation (in the absence of interactions), to in depth propagation predominantly governed by crack shielding.

中文翻译：

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通过原位数字图像相关评估多重应力腐蚀裂纹相互作用

摘要 应用数字图像相关 (DIC)、声发射和电化学噪声测量来研究多个晶间裂纹在连四硫酸盐溶液中作为 600 合金菌落的增长。DIC 成功检测到长度超过 55 μm 和开口超过 0.45 μm 的裂纹。此外，裂缝种群分为起始裂缝、活动裂缝和休眠裂缝，其中活跃种群较大。相互作用的出现和强化对菌落生长行为产生了改变。它们的范围从主要是表面裂纹扩展（在没有相互作用的情况下）到主要由裂纹屏蔽控制的深度扩展。