首页> 外文会议>SEM IX International Congress on Experimental Mechanics June 5-8, 2000 Orlando, Florida >Fractal analysis of degraded turbine rotor steel by slit-island technique
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Fractal analysis of degraded turbine rotor steel by slit-island technique

机译:裂隙孤岛技术对降解涡轮转子钢的分形分析

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Since fracture surface presents clear evidence to describe the circumstances of material failure event, analysis of fracture surface should provide plenty of useful information for failure prevention. Thus if we extract proper inforamtion from the fracture surface, the safety evaluation for plant component could be more accurate. In general, the chaotic morphology of fracture surface is determined by the degree of material degradation as well as by other factors such as type of load, geometry of specimen, notch condition, microstructure of material and environment. In this research we developed a fractal analysis technology for the fracture surface of aged turbine rotor steel based on the slit-island technique using an image analyzer. Moreover the correlations between the fractal dimension and the agign time were studied.
机译:由于断裂面为描述材料失效事件的情况提供了清晰的证据,因此断裂面的分析应为预防失效提供大量有用的信息。因此,如果我们从裂缝表面提取适当的信息,则对植物部件的安全性评估可能会更加准确。通常,断裂表面的混沌形态取决于材料的降解程度以及其他因素,例如载荷的类型,试样的几何形状,缺口条件,材料的微观结构和环境。在这项研究中,我们基于裂隙岛技术,使用图像分析仪开发了一种老化涡轮机转子钢断裂表面的分形分析技术。此外,还研究了分形维数与敏捷时间之间的相关性。

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