表面粗糙度引起的超声波厚度测量误差的修正方法

详细信息

Method of Correcting the Ultrasonic Thickness Measurement Error Caused by Roughness of Test Surfaces

摘要: 根据对未经平整的粗糙锈蚀表面分别进行超声波厚度测量和机械测量的比较试验，发现超声波测量的平均误差为0.6~2.2 mm。为解决该问题，建议使用一种表面回波持续时间的误差修正法，并选用合适的2.25 MHz宽带换能器进行测量。该方法也适用于喷漆的表面检查。
- 超声波厚度测量 /
- 海船检测 /
- 锈蚀 /
- 误差修正 /
- 表面回波
Abstract: Experiments comparing the measured value of ultrasonic thickness measurements and mechanical measurements on rough corroded materials without flattening the test surface were carried out. An average measurement error of from 0.6 mm to 2.2 mm was found in the ultrasonic measurements. To address the problem, an error correction method using surface echo duration was proposed. A 2.25 MHz broadband type transducer was suitable for the measurement and the proposed method can also be applied to a painted test surface.
- Ultrasonic thickness measurement /
- Ship inspection /
- Corrosion /
- Error correction /
- Surface echo

[1]	川上善道，上林正和，安永元则，等.第5章无损探伤检查的新技术［M］.［出版者不详］： Techno Marine 872,2003:173-174.
[2]	成濑健，岛田道男，吉井德治.锈蚀粗糙面进行超声波检查的测量误差的修正法［C］.第9回超声波无损探伤评价研讨会论文集.日本：［出版者不详］,2002,872:103-108.
[3]	成濑健，岛田道男，吉井德治，等.锈蚀零件材料劣化度无损评定技术相关基础研究［J］.船舶技术研究所报告,2000,37(1):1-17.
[4]	JIS Z 2335 超声波脉冲反射法厚度测量法［S］.
[5]	岛田道男，吉井德治，成濑健.双振子探头对锈蚀零件材料板的厚度评价特性研究［J］.日本无损探伤检查协会，新型材料无损探伤评价特别研究委员会资料.1999(39):22-27.
[6]	成濑健，岛田道男，吉井德治.粗糙锈蚀表面厚度进行超声波测量的修正法的数字研究［C］.第6届远东无损探伤研讨会论文集(FENDT2002).日本：［出版者不详］,2002:523-5288.