超声红外锁相热像中金属疲劳裂纹的生热特性

冯辅周; 闵庆旭; 朱俊臻; 徐超; 曹维

doi:10.3788/IRLA201746.0704004

超声红外锁相热像中金属疲劳裂纹的生热特性

doi: 10.3788/IRLA201746.0704004

1.
南昌航空大学无损检测技术教育部重点实验室,江西南昌 330063;
2.
装甲兵工程学院机械工程系,北京 100072;
3.
北京特种车辆研究所,北京 100072

基金项目:

无损检测教育部重点实验室开放基金（ZD201529007）

详细信息

作者简介:
闵庆旭(1988-),男,博士生,主要从事红外热像无损检测技术方面的研究。Email:minqingxu2011@163.com

中图分类号: TN219

Heating characteristics of metal fatigue crack in ultrasonic IR lock-in thermography

1.
Key Laboratory of Nondestructive Testing,Ministry of Education,Nanchang Hangkong University,Nanchang 330063,China;
2.
Department of Mechanical Engineering,Academy of Armored Forces Engineering,Beijing 100072,China;
3.
Beijing Special Vehicle Research Institute,Beijing 100072,China

摘要: 超声红外锁相热像技术是一种将调制激励和锁相技术应用于红外热像检测的新型无损检测技术。针对缺陷生热及传热研究中存在的摩擦生热过程难以有效模拟、缺陷内部生热机理不清等理论问题，采用电-力类比方法，建立了含疲劳裂纹金属平板与超声激励系统的有限元模型，研究了调制超声激励下裂纹区域和裂纹面的生热特点，结果表明：在调制超声激励下，裂纹区域生热呈现出周期性上升的特点，因预紧力的作用，靠近激励同侧的裂纹面区域生热更明显。基于仿真分析和Green函数，建立了裂纹摩擦生热的传热理论模型，进一步探究了裂纹区域温度分布规律；最后利用被测平板上下表面温度比值（P值）对热源深度进行了估计，证明了仿真结果与理论计算的一致性。研究成果将进一步丰富超声红外锁相热像技术的理论基础。
- 超声红外锁相热像 /
- 疲劳裂纹 /
- 生热特性 /
- 有限元分析 /
- 理论分析
Abstract: Ultrasonic infrared lock-in thermography is a novel nondestructive testing technology, which mainly combines the modulated excitation and lock-in technology to achieve infrared thermography test. With the lack of study on the frictional heating simulation and interior heating mechanism during the defect heating and diffusion, the electric-force analogy method was utilized to build the finite element model of the ultrasonic transducer and the metal plate with the fatigue crack. Simulation results show that the crack heating periodically increases with the modulated ultrasonic excitation, and the heating area of crack faces is closed to the excitation side by the influence of the engagement force. Based on the simulation results and the Green function, a theoretic model was introduced to describe the heat diffusion of the crack frictional heating and the heat distribution of the crack vicinity was demonstrated. Further,the depth of the heat source was estimated with the ratio between top and lower surface of the test plate(P-value), which shows consistency between simulation and theoretic results. This study aims to enrich the theoretic basis in ultrasonic infrared lock-in thermography.
- ultrasonic IR lock-in thermography /
- fatigue crack /
- heating characteristic /
- finite element analysis /
- theoretic analysis

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超声红外锁相热像中金属疲劳裂纹的生热特性

doi: 10.3788/IRLA201746.0704004

作者简介:
闵庆旭(1988-),男,博士生,主要从事红外热像无损检测技术方面的研究。Email:minqingxu2011@163.com

Heating characteristics of metal fatigue crack in ultrasonic IR lock-in thermography

计量

超声红外锁相热像中金属疲劳裂纹的生热特性

doi: 10.3788/IRLA201746.0704004

1. 南昌航空大学无损检测技术教育部重点实验室,江西南昌 330063;

2. 装甲兵工程学院机械工程系,北京 100072;

3. 北京特种车辆研究所,北京 100072

作者简介:
闵庆旭(1988-),男,博士生,主要从事红外热像无损检测技术方面的研究。Email:minqingxu2011@163.com

English Abstract

Heating characteristics of metal fatigue crack in ultrasonic IR lock-in thermography

1. Key Laboratory of Nondestructive Testing,Ministry of Education,Nanchang Hangkong University,Nanchang 330063,China;

2. Department of Mechanical Engineering,Academy of Armored Forces Engineering,Beijing 100072,China;

3. Beijing Special Vehicle Research Institute,Beijing 100072,China

全文HTML

目录

留言板

超声红外锁相热像中金属疲劳裂纹的生热特性

doi: 10.3788/IRLA201746.0704004

作者简介: 闵庆旭(1988-),男,博士生,主要从事红外热像无损检测技术方面的研究。Email:minqingxu2011@163.com

Heating characteristics of metal fatigue crack in ultrasonic IR lock-in thermography

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出版历程

超声红外锁相热像中金属疲劳裂纹的生热特性

doi: 10.3788/IRLA201746.0704004

1. 南昌航空大学 无损检测技术教育部重点实验室,江西 南昌 330063; 2. 装甲兵工程学院 机械工程系,北京 100072; 3. 北京特种车辆研究所,北京 100072

作者简介: 闵庆旭(1988-),男,博士生,主要从事红外热像无损检测技术方面的研究。Email:minqingxu2011@163.com

English Abstract

Heating characteristics of metal fatigue crack in ultrasonic IR lock-in thermography

1. Key Laboratory of Nondestructive Testing,Ministry of Education,Nanchang Hangkong University,Nanchang 330063,China; 2. Department of Mechanical Engineering,Academy of Armored Forces Engineering,Beijing 100072,China; 3. Beijing Special Vehicle Research Institute,Beijing 100072,China

全文HTML

目录

作者简介:
闵庆旭(1988-),男,博士生,主要从事红外热像无损检测技术方面的研究。Email:minqingxu2011@163.com

1. 南昌航空大学无损检测技术教育部重点实验室,江西南昌 330063;

2. 装甲兵工程学院机械工程系,北京 100072;

3. 北京特种车辆研究所,北京 100072

作者简介:
闵庆旭(1988-),男,博士生,主要从事红外热像无损检测技术方面的研究。Email:minqingxu2011@163.com

1. Key Laboratory of Nondestructive Testing,Ministry of Education,Nanchang Hangkong University,Nanchang 330063,China;

2. Department of Mechanical Engineering,Academy of Armored Forces Engineering,Beijing 100072,China;

3. Beijing Special Vehicle Research Institute,Beijing 100072,China