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A study of contact interface and wear diagnosis for hand taps using ultrasonic method

机译：超声波方法对水龙头接触面及磨损诊断的研究

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摘要

This work was to study the contact interface between a set of used hand taps and another new one based on the regional scanning of ultrasound. The contact image was a novel disclosure for hand taps contact. The objective of this work was to provide a wear diagnosis by making a comparison of contact area between the used and the new hand taps. The 2D maps showed an apparent change not only in area sizes but also in contact shapes between the used and the new hand taps. The 3D contact images also provided useful information to show the degree of contact. The contact area between the tap and the workpiece was calculated using an image analysis software package. The range of contact areas varied from 2.49 mm~2 to 35.31 mm~2 for the used hand taps and from 1.19 mm~2 to 28.55 mm~2 for the new taps, depending on the definition of the contrast ratio. The result provided another scientific data for users to decide a correct timing for the tool replacement. In addition, maps of reflection coefficient and pressure contour distribution were presented. The range of contact pressure varied from 2.5 Mpa to 4.2 Mpa.
机译：这项工作是基于超声波的局部扫描研究一组二手手用水龙头和另一把新水龙头之间的接触界面。接触图像是用于手接触的新颖公开内容。这项工作的目的是通过比较旧的和新的手用丝锥之间的接触面积来提供磨损诊断。 2D地图不仅在面积大小上有明显变化，而且在使用过的和新的手敲击之间的接触形状也有明显变化。 3D联系人图像还提供了有用的信息来显示联系程度。使用图像分析软件包可以计算出丝锥和工件之间的接触面积。取决于对比率的定义，二手手拍的接触面积范围从2.49 mm〜2到35.31 mm〜2不等，新手拍的接触面积范围从1.19 mm〜2到28.55 mm〜2不等。结果为用户提供了另一项科学数据，以决定更换工具的正确时机。此外，还绘制了反射系数和压力轮廓分布图。接触压力范围从2.5 Mpa到4.2 Mpa。

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  • 来源
    《Applied Acoustics》 |2014年第11期|46-56|共11页
  • 作者

    C.W. Yao; C.C. Wu;

  • 作者单位

    Department of Mold and Die Engineering, National Kaohsiung University of Applied Sciences, No. 415, Chien-Kung Rd., Kaohsiung City 807, Taiwan, ROC;

    Department of Mold and Die Engineering, National Kaohsiung University of Applied Sciences, No. 415, Chien-Kung Rd., Kaohsiung City 807, Taiwan, ROC;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Wear diagnosis; Ultrasound; Contact interface; Contact pressure;

    机译：磨损诊断;超声波接触界面;接触压力;

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