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一般多把低倍照相当作记录失效构件原始状态的一种方式,此后即可破坏取样进行诸如扫描,磨片观察等试验。因此,所用设备限于人像座机,最多是1:1放大。实际上,这是不全面的,不足以显示构件失效的宏观特征,常常影响对某些结果的正确分析。作为构件失效的低倍考查(包括照相),实用倍率一般指20倍以下。此时,不仅可拍摄若干失效构件的特征全貌,还可应用各种照相术,显示出超过人眼所能分辨的若干细节,有利于按
In general, the low magnification is used as a way to record the original state of a failed component, after which the sample can be destroyed for testing such as scanning, grinding observation and the like. Therefore, the equipment used is limited to portrait landline, up to 1: 1 zoom. In fact, this is not comprehensive enough to show the macroscopic features of component failure, often affecting the correct analysis of some of the results. As a component of the low test times (including photography), practical rate generally refers to 20 times the following. At this point, not only can take a picture of the characteristics of a number of failure components, but also the application of a variety of photography, showing more than the human eye can distinguish a number of details, is conducive to press