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氧气球罐上环缝某处缺陷,因其回波动态波形在荧光屏显示并非波形模式Ⅲa和波形模式Ⅲb的特征,缺陷定性裂纹困难,对其采取进一步检测措施,最终确定为裂纹。
Oxygen balloon tank somewhere on the ring seam defects, because of its dynamic waveforms of echo on the screen shows not waveform mode Ⅲ a and waveform mode Ⅲ b characteristics of qualitative defects of the crack defects, to take further testing measures to determine the final crack.