Lock-in thermal wave detection of defective composite material based on phase-shifting technology

Wang Zhen; Yang Zhengwei; Tao Shengjie; Zhu Haibo; Zhang Wei

doi:10.3788/IRLA201948.S204002

In order to improve the defect recognition ability and accuracy of the lock-in thermal wave detection technology, a temperature sequence processing method based on phase-shifting technology was proposed. A step-plate model of carbon fiber composite material with gradual thickness was established to study the relationship between thickness and phase under different modulation periods, effects of non-phase-shifting and phase-shift of temperature series in different modulation periods were numerically analyzed, the results show that the sensitivity of the phase to thickness is increased by three times after phase-shifting by 180, and the phase difference between different thicknesses is increased, which enhances the ability to identify defects. The carbon fiber plate with flat hole defects was used to verify the numerical calculation and the phase diagram obtained by non-phase-shifting and phase-shifting by 180 was compared, the results show that smaller defects can be identified after phase-shifting and the contrast near the defect was enhanced, which proved the effectiveness of phase-shifting technology to improve the ability of lock-in thermal wave for detecting defects.

Lock-in thermal wave detection of defective composite material based on phase-shifting technology

1. Missile Engineering College,Rocket Force University of Engineering,Xi'an 710025,China;

2. School of Mechanical Engineering,Xi'an Jiaotong University,Xi'an 710049,China

Received Date: 2019-04-10

Rev Recd Date: 2019-05-20

Publish Date: 2019-09-30

Key words:

Abstract: In order to improve the defect recognition ability and accuracy of the lock-in thermal wave detection technology, a temperature sequence processing method based on phase-shifting technology was proposed. A step-plate model of carbon fiber composite material with gradual thickness was established to study the relationship between thickness and phase under different modulation periods, effects of non-phase-shifting and phase-shift of temperature series in different modulation periods were numerically analyzed, the results show that the sensitivity of the phase to thickness is increased by three times after phase-shifting by 180, and the phase difference between different thicknesses is increased, which enhances the ability to identify defects. The carbon fiber plate with flat hole defects was used to verify the numerical calculation and the phase diagram obtained by non-phase-shifting and phase-shifting by 180 was compared, the results show that smaller defects can be identified after phase-shifting and the contrast near the defect was enhanced, which proved the effectiveness of phase-shifting technology to improve the ability of lock-in thermal wave for detecting defects.

HTML

Reference (13)

[1]	Laborda A, Robinson A, Wang S, et al. Fatigue assessment of multilayer coatings using lock-in thermography[J]. Materials Design, 2018, 141:361-373.
[2]	Zhao H, Zhou Z, Fan J, et al. Application of lock-in thermography for the inspection of disbonds in titanium alloy honeycomb sandwich structure[J]. Infrared Physics Technology, 2017, 81:69-78.
[3]	Wang F, Wang Y H, Liu J Y, et al. Theoretical and experimental study on carbon/epoxy facings-aluminum honeycomb sandwich structure using lock-in thermography[J]. Measurement, 2018, 126:110-119.
[4]	Huan H, Mandelis A, Liu L, et al. Local-stress-induced thermal conductivity anisotropy analysis using non-destructive photo-thermo-mechanical lock-in thermography (PTM-LIT) imaging[J]. NDT E International, 2017, 91:79-87.
[5]	Feng Fuzhou, Min Qingxu, Zhu Junzhen, et al. Heating characteristics of metal fatigue crack in ultrasonic IR lock-in thermography[J]. Infrared and Laser Engineering, 2017, 46(7):0704004. (in Chinese)冯辅周, 闵庆旭, 朱俊臻, 等. 超声红外锁相热像中金属疲劳裂纹的生热特性[J]. 红外与激光工程, 2017, 46(7):0704004.
[6]	Li Haoran, Zhu Yuyu, Wu Li. Study and development of lock-in thermal excitation source for infrared thermography nondestructive testing system[J]. Process Automation Instrumentation, 2017, 38(10):91-95. (in Chinese)李浩然, 朱玉玉, 武丽. 红外热成像无损检测系统锁相热激励源的研制[J]. 自动化仪表, 2017, 38(10):91-95.
[7]	Busse G, Wu D, Karpen W. Thermal wave imaging with phase sensitive modulated thermography[J]. Journal of Applied Physics, 1992, 71(8):3962-3965.
[8]	Sakagami T, Kubo S. Development of a new non-destructive testing technique for quantitative evaluations of delamination defects in concrete structures based on phase delay measurement using lock-in thermography[J]. Infrared Physics Technology, 2002, 43(3-5):311-316.
[9]	Ishikawa M, Hatta H, Habuka Y, et al. Detecting deeper defects using pulse phase thermography[J]. Infrared Physics Technology, 2013, 57:42-49.
[10]	Mu Yuwei. Numerical simulation and analysis of lock-in infrared nondestructive testing based on ANSYS[D]. Dalian:Dalian University of Technology, 2008:38-42. (in Chinese)穆玉伟. 基于ANSYS的锁相红外无损检测数值模拟及分析[D]. 大连:大连理工大学, 2008:38-42.
[11]	Wang Zijun. Infrared phase nondestructive testing technology and its application[D]. Harbin:Harbin Institute of Technology, 2009:98-99. (in Chinese)汪子君. 红外相位法无损检测技术及其应用研究[D]. 哈尔滨:哈尔滨工业大学, 2009:98-99.
[12]	Guo Jianguang, Gao Xiaorong, Guo Jianqiang, et al. On the dead zone of eddy current heating of lock-in thermography for unidirectional carbon fiber reinforced plastic[J]. Nondestructive Testing, 2017, 39(11):1-6. (in Chinese)郭建光, 高晓蓉, 郭建强, 等. 单向碳纤维增强复合材料的锁相涡流热成像检测盲区[J]. 无损检测, 2017, 39(11):1-6.
[13]	Tao Shengjie. Research on infrared lock-in thermography and its application in quantitative detection of material defect[D]. Xi'an:Rocket Force University of Engineering, 2016:22-29. (in Chinese)陶胜杰. 红外锁相热成像技术及其在材料缺陷定量检测中的应用研究[D]. 西安:火箭军工程大学, 2016:22-29.

Lock-in thermal wave detection of defective composite material based on phase-shifting technology

doi: 10.3788/IRLA201948.S204002

Abstract

References

Proportional views

通讯作者: 陈斌, bchen63@163.com

Article Metrics

Related

Proportional views