【摘 要】
：
介质对声波的衰减引起超声声场分布特性变化,对超声检测,尤其是声衰减较大介质的超声检测工艺设计影响很大,本文针对铸件和锻件圆盘直探头超声检测,理论计算了考虑介质的声衰
【机 构】
：
常州工程职业技术学院机电与汽车工程学院无损检测教研室,江苏常州213164江苏省特种设备安全监督检验研究院常州分院,江苏常州213016渤船重工有限责任公司,辽宁葫芦岛125004河海大学常州校区,江
【出 处】
：
2017年西安-上海声学学会第五届声学学术会议
论文部分内容阅读
介质对声波的衰减引起超声声场分布特性变化,对超声检测,尤其是声衰减较大介质的超声检测工艺设计影响很大,本文针对铸件和锻件圆盘直探头超声检测,理论计算了考虑介质的声衰减时,圆盘声源辐射声场的分布特性,与目前工艺设计中不考虑介质的声衰减得到的声场分布特性对比,发现考虑介质的声衰减后,圆盘声源辐射声场的近场区长度变小,远场指向性不变.本文的研究为超声检测工艺设计具有指导意义.
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