·全体积的单线扫查·与焊缝结构无关的设置·对各种缺陷非常敏感，但对缺陷方向灵敏度较小衍射时差(TOFD)和脉冲回波检测TOFD是使用两个探头一收一发模式的检测技术。
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针对常规的超声反射波法检测结果记录性差、可靠性低等技术缺点,采用超声衍射时差(time of flight diffraction,TOFD)法对厚壁(≥20mm)紫铜焊缝缺陷进 ..
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衍射时差法 TOFD ; time-of-flight diffraction ; time of flight diffraction technique
衍射时差法超声检测 TOFD
超声波衍射时差法 TOFD
超声衍射时差法 TOFD ; time of flight diffraction
介绍了衍射时差法 time of flight diffraction technique ; TOFD
采用超声衍射时差 time of flight diffraction ; TOFD
对其超声衍射时差法 timeoffflightdiffraction ; TOFD
衍射时差探伤法 TOFD ; time of flight diffraction
超声波衍射时差探伤法 Time Of Flight Diffraction ; TOFD
超声衍射时差(tofd)法是焊缝超声检测和缺陷定量很有发展前景的新技术。
Ultrasonic time-of-flight diffraction (TOFD) technique is a new successful one for detecting and sizing the discontinuities in welded joints.
概述了超声波衍射时差法(TOFD)，对目前世界上主要的七个TOFD检测标准或规范进行了分析和比较，归纳了其中十二个方面的异同点。
Time of flight diffraction (TOFD) was summarized as a new nondestructive testing method. The present seven main TOFD standards in the world were evaluated and compared in twelve different portions.
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