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    基于主成分分析的18CrNiMo7-6材料理化参数无损评估方法

    丁 松, 王 平, 田贵云

    丁 松, 王 平, 田贵云. 基于主成分分析的18CrNiMo7-6材料理化参数无损评估方法[J]. 无损检测, 2016, 38(8): 12-16. DOI: 10.11973/wsjc201608003
    引用本文: 丁 松, 王 平, 田贵云. 基于主成分分析的18CrNiMo7-6材料理化参数无损评估方法[J]. 无损检测, 2016, 38(8): 12-16. DOI: 10.11973/wsjc201608003
    DING Song, WANG Ping, TIAN Gui-yun. Nondestructive Evaluation Method of Carburized 18CrNiMo7-6 Parameters Based on Principal Component Analysis[J]. Nondestructive Testing, 2016, 38(8): 12-16. DOI: 10.11973/wsjc201608003
    Citation: DING Song, WANG Ping, TIAN Gui-yun. Nondestructive Evaluation Method of Carburized 18CrNiMo7-6 Parameters Based on Principal Component Analysis[J]. Nondestructive Testing, 2016, 38(8): 12-16. DOI: 10.11973/wsjc201608003

    基于主成分分析的18CrNiMo7-6材料理化参数无损评估方法

    基金项目: 

    江苏省研究生创新基金资助项目(CXLX11_0184)

    详细信息
      作者简介:

      丁 松(1977-), 男, 博士研究生, 主要从事电磁无损检测技术研究。

    • 中图分类号: TH878;TG115.28

    Nondestructive Evaluation Method of Carburized 18CrNiMo7-6 Parameters Based on Principal Component Analysis

    • 摘要: 重载齿轮材料18CrNiMo7-6加工后需经渗碳处理, 齿轮表面及亚表面理化参数通常需通过切割样品进行有损检测来得到, 且产品无法实现全数检查。提出一种基于Barkhausen效应的无损检测方法, 通过提取Barkhausen噪声信号的六个特征值并对其进行主成分分析, 用降维后的主成分评估18CrNiMo7-6材料表面及亚表面马氏体、残余奥氏体含量, 以及有效硬化层深度等参数。对实际产品进行检测验证, 结果表明该方法是一种可对齿轮产品全数检测的有效无损检测与评估方法。
      Abstract: The material of heavy-load gear,18CrNiMo7-6,was carburized after manufacture. Gears could not be tested exhaustively because the physicochemical parameters of surface and sub-surface material were measured by destructive methods. This paper presented a nondestructive method based on Barkhausen effect. The common six features of MBN (Magnetic Barkhausen Noise) signal were extracted for PCA (Principal Component Analysis). The principal components from dimension reduction process were used to evaluate the martensite, residual austenite and case depth in the surface and sub-surface of carburized 18CrNiMo7-6. By evaluating some products from gear faculty, this nondestructive testing and evaluation method was proven effective for gear exhaustive test.
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    出版历程
    • 收稿日期:  2016-03-02
    • 刊出日期:  2016-08-09

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