共聚焦光学轮廓仪在超声人工标准伤测量中的应用研究

Application of Confocal Optical Profiler in Ultrasonic Artificial Standard Defect Measurement

人工标准伤是确保核燃料组件锆合金包壳管超声探伤准确性的重要手段。为确定共聚焦光学轮廓仪是否能准确测量人工标准伤,采用共聚焦光学表面轮廓仪,进行人工标准伤三维形貌的采集和深度、宽度的测量;并对同一人工标准伤采用传统的金相法进行测量。比较两种方法获得人工标准伤截面形状,并用t检验分析测量结果的一致性。结果表明,共聚焦光学轮廓仪获得的人工标准伤截面形状与金相截面一致,且测量结果与金相法一致或更优,可取代金相法,用于超声检查人工标准伤的制备和校准。

Artificial standard damage is an important means to ensure the accuracy of ultrasonic flaw detection for zirconium alloy cladding tube of nuclear fuel assembly.In order to determine whether the confocal optical profilometer can accurately measure the artificial standard wound, the confocal optical surface profilometer was used to collect the three-dimensional morphology of the artificial standard wound and measure the depth and width.The same artificial standard injury was measured by traditional metallographic method.The two methods were compared to obtain the shape of the artificial standard wound section, and the consistency of the measured results was analyzed by t test.The results show that the shape of the artificial standard wound section obtained by confocal optical profilometry is consistent with the metallographic section, and the measurement results are consistent with or better than the metallographic method, which can replace the metallographic method for the preparation and calibration of the artificial standard wound in ultrasonic examination.