无损检测
無損檢測
무손검측
Nondestructive Testing
2015年
11期
10-12
,共3页
姜学平%王鹏%郑晖%韩庆邦
薑學平%王鵬%鄭暉%韓慶邦
강학평%왕붕%정휘%한경방
相控阵超声检测%扇形扫描%滑移界面%角度范围
相控陣超聲檢測%扇形掃描%滑移界麵%角度範圍
상공진초성검측%선형소묘%활이계면%각도범위
Phased array ultrasonic testing%Sectorial scan%Sliding interface%Angle range
相控阵超声检测技术灵活、可靠、高效，适于特种设备焊缝的无损检测。针对相控阵超声斜入射脉冲横波检测特种设备的低碳钢材料焊缝时，扇形扫描角度范围存在问题，通过理论计算声波在有机玻璃楔块-钢界面的透射率，发现扇形扫描时声束的折射角度范围为38°~90°时可行，但考虑到声束偏转角度过大时有效声辐射口径变小等实际问题，建议扇形扫描中角度范围上限不大于75°。
相控陣超聲檢測技術靈活、可靠、高效，適于特種設備銲縫的無損檢測。針對相控陣超聲斜入射脈遲橫波檢測特種設備的低碳鋼材料銲縫時，扇形掃描角度範圍存在問題，通過理論計算聲波在有機玻璃楔塊-鋼界麵的透射率，髮現扇形掃描時聲束的摺射角度範圍為38°~90°時可行，但攷慮到聲束偏轉角度過大時有效聲輻射口徑變小等實際問題，建議扇形掃描中角度範圍上限不大于75°。
상공진초성검측기술령활、가고、고효，괄우특충설비한봉적무손검측。침대상공진초성사입사맥충횡파검측특충설비적저탄강재료한봉시，선형소묘각도범위존재문제，통과이론계산성파재유궤파리설괴-강계면적투사솔，발현선형소묘시성속적절사각도범위위38°~90°시가행，단고필도성속편전각도과대시유효성복사구경변소등실제문제，건의선형소묘중각도범위상한불대우75°。
Phased array ultrasonic testing technology is flexible, reliable, efficient and suitable for special equipment welds nondestructive testing.Sectorial scan angle range was investigated in this paper for phased array ultrasonic oblique incident pulse shear wave testing of special equipment welds made in low carbon steel.The theoretical calculation of ultrasound wave energy transmission coefficient through the plexiglass wedge-steel interface was carried out.We find that setting sector scan beam deflection angle range to 38°to 90°is feasible.When the beam deflection angle is too large,some actual problems will emerge such as effective acoustic radiation dimension comes small,so that upper limit of the sectorial scan angle of 75°is suggested.
