缺陷的检出概率是零件损伤容限设计和寿命预测的重要基础数据。针对发动机中的关键转动件——粉末涡轮盘中的夹杂缺陷，进行了超声检出概率研究。制作了不同埋深不同孔径的平底孔人工缺陷试样，模拟粉末盘中的非金属夹杂缺陷。采用6组探头的超声水浸分区聚焦检测工艺对上述人工缺陷试样进行检测，获得了不同缺陷的超声检出概率数据，并绘制出缺陷检出概率（POD）曲线。结果表明，采用特定的检测工艺，在95%的置信水平下，以90%概率检出的缺陷当量尺寸为0.167 mm。
所属栏目
试验研究国家自然科学基金资助项目（51175113，51575134）
收稿日期
2018/12/22
作者单位
沙正骁:哈尔滨工业大学 先进焊接与连接国家重点实验室, 哈尔滨 150001中国航发北京航空材料研究院检测中心, 北京 100095
刚铁:哈尔滨工业大学 先进焊接与连接国家重点实验室, 哈尔滨 150001
梁菁:中国航发北京航空材料研究院检测中心, 北京 100095
联系人作者
沙正骁(shazhengxiao@gmail.com)
备注
沙正骁(1985-),男,工程师,硕士,主要从事无损检测技术研究
引用该论文:
SHA Zhengxiao,GANG Tie,LIANG Jing.Ultrasonic Inspection POD for Inclusions within Powder Metallurgical Turbine Disks[J].Nondestructive Testing,2019,41(4):24～29
沙正骁,刚铁,梁菁.粉末涡轮盘夹杂缺陷的超声检出概率[J].无损检测,2019,41(4):24～29
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