以桥梁钢结构非熔透角焊缝的熔深检测为研究对象,分别采用多台超声相控阵和数字A超设备进行熔深测量,并与解剖后的低倍宏观法的测量值进行比较和相对偏差分析。分析结果表明,与数字A超的测量值相比,超声相控阵法的测量值更加接近约定真值,且测量数据的分散性较小,可有效地进行桥梁钢结构非熔透角焊缝熔深的检测。 Taking the penetration depth testing of non-penetration fillet welds of bridge steel as the research object, the penetration depth measurement was carried out by using multiple ultrasonic phased array and digital A-ultrasound equipment, respectively, and compared with the measured value of the macroscopic method after the dissection And relative deviation analysis. The analysis results show that compared with the measured value of A-ultrasonic, the measured value of ultrasonic phased array method is closer to the agreed true value and the dispersion of measured data is smaller, which can effectively carry out non-penetration fillet weld of bridge steel structure Deep penetration testing.