Application of Vibrothermography in Nondestructive Testing of Structures
Application of Vibrothermography in Nondestructive Testing of Structures
复制标题
振动热成像技术在结构无损检测中的应用
DOI：
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发表时间：
2012
期刊：
影响因子：
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通讯作者：
T. Uhl
中科院分区：
文献类型：
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作者：
M. Szwedo;L. Pieczonka;M. Szwedo;L. Pieczonka;T. Uhl
振动热成像是一种无损检测方法，它监测振动和/或超声激励下损伤产生的热量，以评估结构的健康。本文探讨了结构振动热成像检测的实际问题。介绍和讨论了振动热成像技术在两个典型应用领域的测量结果。例子是焊接试样和军用飞机机身蒙皮。测量已经进行了内部振动热成像测试系统的使用。对于焊接试样，研究了一系列具有不同缺陷类型的碳钢试样。在飞机测试的情况下，已经在机翼和机身部分上进行了现场测量，以评估结构完整性。本文讨论了与使用振动热成像现场测量有关的实际问题，并提出了热图像处理技术，可以获得最佳的探伤结果。应用的图像处理技术可以提高来自现场测量的结果的质量和可读性，并且结构的热响应较低。本文最后讨论了振动热成像检测在结构健康监测中的应用。M.斯韦多湖美国阿拉巴马州AGH科技大学机械工程与机器人学院机器人与机电一体化系。Mickiewicza 30，30-059 Krakow，波兰，1.电子邮件：szwedo@agh.edu.pl 2.电子邮件：lukasz. pieczonka@www.example.com agh.edu.pl电子邮件：tuhl@agh.edu.pl第六届欧洲结构健康监测研讨会Fr.2.A.2许可证：http://creativecommons.org/licenses/by-nd/3.0 1 M或e in fo a bout th is a rt ic le：ht tp：//w w w .n dt .n et /？14 16 7
Vibrothermography is a nondestructive testing method that monitors heat produced by damage under vibration and/or ultrasonic excitation in order to evaluate the structural health. The paper investigates practical aspects of vibrothermographic testing of structures. Measurements in two typical application areas of vibrothermography are presented and discussed. The examples are weld test specimens and a military aircraft fuselage skin. Measurements have been performed with use of an in-house vibrothermographic testing system. In case of welded specimens a series of carbon steel test samples with different flaw types have been investigated. In case of aircraft testing, field measurements have been performed on a wing and fuselage sections in order to assess the structural integrity. The paper discusses practical aspects related to field measurements with use of vibrothermography and presents thermal image processing techniques which allow to obtain the best flaw detection results. Applied image processing techniques allow increasing the quality and readability of the results coming from field measurements with low thermal response from the structure. The paper is concluded with a discussion on applications of vibrothermographic testing in Structural Health Monitoring applications. M. Szwedo 1 , L. Pieczonka 2 , T Uhl 3 , Department of Robotics and Mechatronics, Faculty of Mechanical Engineering and Robotics, AGH University of Science and Technology, Al. A. Mickiewicza 30, 30-059 Krakow, Poland, 1. e-mail: szwedo@agh.edu.pl 2. e-mail: lukasz.pieczonka@agh.edu.pl 3. e-mail: tuhl@agh.edu.pl 6th European Workshop on Structural Health Monitoring Fr.2.A.2 Licence: http://creativecommons.org/licenses/by-nd/3.0 1 M or e in fo a bo ut th is a rt ic le : ht tp :// w w w .n dt .n et /? id = 14 16 7