测控技术杂志社,测控在线—材质涡流检测信号处理方法 关键词：材质检测;脉冲涡流;特征抽取 [gap=453]Key words：material property testing;pulsed eddy current;feature extraction
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Nondestructive testing of metal hardened depth is an important and difficult job, which belongs to material property testing.
金属表面硬化层深度的检测是一项非常重要而又困难的工作。
Nondestructive testing and quality control of metal hardened-depth is an important problem to be solved in machinery industry. It belongs to material property testing.
金属表面硬化层深度的检测及控制是目前机械工业部门急需解决的一个问题，它属于材料检测的范畴。
The chosen of material, property characteristics, structural form, property testing and its application used in vertical axial and mixed-flow pump are introduced.
文中介绍了立式混流、轴流泵用陶瓷轴承的材料选择、性能特点、设计结构形式、性能试验及其具体应用实践。
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