对接焊缝中超声相控阵的检测

文章运用超声相控阵新技术对含不同类型缺陷的对接焊缝试块进行检测试验。通过对超声探头位置的准确计算,以及对超声相控阵的声束角度、焦距位置、焦点尺寸及位置等参数的选择来进行仪器标定。用标定好的仪器对缺陷焊缝试块中每类缺陷从不同方位进行检测,从检测的结果及分析看,超声相控阵对缺陷的检出能力很强,能检出不同缺陷的位置和大小,检测结果直观,对实际焊缝检测和评价具有很好的参考价值。

Detection of Ultrasonic Phased Array for Butt Weld

In the paper,butt welds with varies of defects tested by new technology of ultrasonic phased array was discussed.Through calculating ultrasonic phased array probe position and choosing the detecting parameter such as beam angle,focal distance,focus size and focus length and so on to calibrate the instrument.And then the butt weld sample was tested by the instrument.The experiment results and its analyses showed the detecting ability of ultrasonic phased array was powerful and could detect difference kind of flaw.The detecting results could be shown visually.The experiment results also provided the good references for detecting defects in welds.