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首页> 外文会议>International Conference on X-ray and Neutron Capillary Optics, Sep 8-12, 2001, Zvenigorod, Russia >Kumakhov optics in a portable x-ray assembly for the stress-strain and element analysis
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Kumakhov optics in a portable x-ray assembly for the stress-strain and element analysis

机译：便携式X射线组件中的Kumakhov光学器件，用于应力应变和元素分析

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摘要

One of the most important features of the developed portable diffractometer making use of Kumakhov's half-lens is that allows stress strain analysis in different sections of the investigated object. Here the investigation results are presented showing efficiency of using Kumakhov's lens in reducing noise, lessening width and increasing diffraction maximums' intensity, as well as towards better accuracy of determining their angle deviation. Use of X-ray capillary half-lens to create a spatially collimated quasi-parallel beam and of full capillary lens to focus X-ray permitted a functional combination of a diffraction and spectrometer units with PSD and energy-dispersion semiconductor detectors to enable simultaneous receipt of information about stress-strain condition and element composition, respectively. The quantitative assessment of the above parameters was done based on the in-house software. Element composition analysis including strain crystal lattice deformation of material in actual products makes it possible to distinguish between deformations that occurred at the stage of manufacture or acquired in the process of operation (fatigue), and strain conditions due to local changes in element composition (aging, weld seams), which is an extremely important criterion of reliability of products. Information about product's changed percentage of chemical content in stress and strain localities will provide additional information assisting expert evaluation of reasons for metal structures failures.
机译：利用Kumakhov的半透镜，开发的便携式衍射仪的最重要特征之一是可以对被研究物体的不同部分进行应力应变分析。在这里，研究结果显示了使用Kumakhov透镜在减少噪声，减小宽度和增加衍射最大强度方面的效率，以及确定其角度偏差的更好准确性。使用X射线毛细管半透镜创建空间准直的准平行光束，并使用全毛细管透镜聚焦X射线，可以将衍射和光谱仪单元与PSD和能量色散半导体检测器进行功能组合，以实现同时接收有关应力-应变条件和元素组成的信息。基于内部软件对上述参数进行了定量评估。元素组成分析（包括实际产品中材料的应变晶格变形）可以区分在制造阶段发生的变形或在操作过程中获得的变形（疲劳），以及由于元素组成的局部变化而引起的应变条件（时效） （焊缝），这是产品可靠性的极其重要的标准。有关产品在应力和应变局部的化学含量变化百分比的信息将提供附加信息，有助于专家评估金属结构故障的原因。

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