• 中国科技论文统计源期刊
  • 中文核心期刊
  • 中国科技核心期刊
  • 中国机械工程学会无损检测分会会刊
高级检索

环形锻件超声波自动C扫描检测中的水声距自动修正方法

张振, 许有昌, 卜雄洙, 王新征

张振, 许有昌, 卜雄洙, 王新征. 环形锻件超声波自动C扫描检测中的水声距自动修正方法[J]. 无损检测, 2016, 38(6): 21-23. DOI: 10.11973/wsjc201606005
引用本文: 张振, 许有昌, 卜雄洙, 王新征. 环形锻件超声波自动C扫描检测中的水声距自动修正方法[J]. 无损检测, 2016, 38(6): 21-23. DOI: 10.11973/wsjc201606005
ZHANG zhen, XU You-chang, BU Xiong-zhu, WANG Xin-zheng. Water Path Length Correction in Ultrasonic C-scan Inspection for the Ring Forgings[J]. Nondestructive Testing, 2016, 38(6): 21-23. DOI: 10.11973/wsjc201606005
Citation: ZHANG zhen, XU You-chang, BU Xiong-zhu, WANG Xin-zheng. Water Path Length Correction in Ultrasonic C-scan Inspection for the Ring Forgings[J]. Nondestructive Testing, 2016, 38(6): 21-23. DOI: 10.11973/wsjc201606005

环形锻件超声波自动C扫描检测中的水声距自动修正方法

详细信息
    作者简介:

    张振(1987-),男,硕士,主要从事智能无损检测技术工作。

  • 中图分类号: TG115.28

Water Path Length Correction in Ultrasonic C-scan Inspection for the Ring Forgings

  • 摘要: 简要分析了水声距变化引起检测结果异常的原因,结合转台喷水式超声波C扫描检测系统的特点,利用超声检测仪第一界面回波实时测量水声距,并作为反馈值对运动机构进行闭环控制,自动跟随水声距,同时采用样条插值技术实时拟合DAC(距离-波幅)曲线,修正由于机械机构动作延迟和间隙引起的水声距的微小偏移。利用上述方法对存在大于φ1.2 mm当量缺陷的环形锻件进行了检测试验。结果表明:采用水声距自动修正方法的检测结果的信噪比明显优于未进行修正的结果,缺陷清晰可辨,对同类检测系统的研制及应用具有实际参考意义。
    Abstract: The reasons of abnormal test results because of water path length changes were briefly analyzed. Considering the characteristics of the ring forgings ultrasonic C-scan system, the first interface echo time of ultrasonic flaw detector was used to measure the water path length and the value was further used as a feedback of the actuator for closed loop control. To correct the offset due to mechanical system operation delay and backlash, DAC curve was drawn in real time with spline interpolation technique. For one ring forging with larger than φ1.2 mm equivalent defect, experiments were carried out on the above-mentioned method. The results showed that actual picture quality and the accuracy were better than those that were not corrected. And this paper maybe provides engineering reference value.
  • [1] 王飞,周军,黄云. 航天铝合金锻件缺陷检测与成因[J]. 无损检测,2014,54(3):36-38.
    [2] 史亦韦.超声检测[M].北京:机械工业出版社,2006:23-48.
    [3] 关保清,苏真伟,殷国富,等. 大型回转轴超声超声波自动探伤系统[J]. 仪表技术与传感器,2008(1):88-89,92.
    [4] 董晓丽,杨顺民,宋文爱,等. 变壁厚薄壁筒体超声检测技术及自动检测系统[J]. 无损检测,2007,29(6):304-308.
    [5] 乔立山,王玉兰,曾锦光. 实验数据处理中曲线拟合方法探讨[J]. 成都理工大学学报:自然科学版,2004,31(1):91-95.
计量
  • 文章访问数:  3
  • HTML全文浏览量:  0
  • PDF下载量:  3
  • 被引次数: 0
出版历程
  • 收稿日期:  2015-11-15
  • 刊出日期:  2016-06-09

目录

    /

    返回文章
    返回