超声红外检测中裂纹微观界面生热的数值模拟
|
摘要
从超声波传播和声-机-热转换的理论角度,阐述了红外无损检测的工作原理。采用ANSYS和ABAQUS软件建立超声红外无损检测的有限元分析模型,结合模态和谐响应分析手段,总结出超声激励的合理频率,有效地避开了结构共振现象且获得了较好的成像效果。通过数值模拟、热力学第一理论以及声波传播理论,对裂纹微观界面的生热机理进行了研究,发现超声激励下裂纹生热的速率极快,近表面的裂纹处生热量大,温升高,进一步证明了超声红外检测的高效性和可行性,为科研实验和工程检测提供了相关的理论依据。
The infrared nondestructive testing was described from the theoretical perspective of ultrasonic propagation and the acoustic-structure-thermal conversion. Then, the finite element model of ultrasonic infrared nondestructive testing was established by ANSYS and ABAQUS. Besides, the reasonable frequency of ultrasonic excitation was given by modal and harmonic response analysis method. Thus, it could effectively avoid the structural resonance phenomenon and obtain a good imaging result. Heat generation mechanism of micro crack interface was researched through numerical simulation, thermodynamics first law and acoustic propagation. It was found that the rate of heat generation was very fast, the quantity of heat generation was large and the temperature rise was high in the crack near the surface under ultrasonic excitation. It could further prove the feasibility and efficiency of ultrasonic infrared detection and provide the theoretical basis for scientific experiment and engineering test.
The infrared nondestructive testing was described from the theoretical perspective of ultrasonic propagation and the acoustic-structure-thermal conversion. Then, the finite element model of ultrasonic infrared nondestructive testing was established by ANSYS and ABAQUS. Besides, the reasonable frequency of ultrasonic excitation was given by modal and harmonic response analysis method. Thus, it could effectively avoid the structural resonance phenomenon and obtain a good imaging result. Heat generation mechanism of micro crack interface was researched through numerical simulation, thermodynamics first law and acoustic propagation. It was found that the rate of heat generation was very fast, the quantity of heat generation was large and the temperature rise was high in the crack near the surface under ultrasonic excitation. It could further prove the feasibility and efficiency of ultrasonic infrared detection and provide the theoretical basis for scientific experiment and engineering test.
引文
[1] FAVRO L D,HAN X Y,OUYANG Z,et al.Infrared imaging of defects heated by a sonic pulse[J].Review of Scientific Instruments,2000,71(6):2418.
[2] 陈赵江,张淑仪,郑江,等.利用有限元方法模拟微裂纹在强超声作用下的摩擦发热现象[J].无损检测,2010,32(11):838.
[3] 缪鹏程,米小兵,张淑仪,等.超声红外热像检测中缺陷发热的瞬态温度场的有限元分析[J].南京大学学报(自然科学版),2005,41(1):98.
[4] 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):96.
[5] HAN X Y,FAVRO L D,OUYANG Z,et al.Thermosonics:detecting cracks and adhesion defects using ultrasonic excitation and infrared imaging[J].The Journal of Adhesion,2001,76(2):151.
[6] 刘元林,梅晨,唐庆菊,等.红外热成像检测技术研究现状及发展趋势[J].机械设计与制造,2015(6):260.
[7] 刘慧.超声红外锁相热像无损检测技术的研究[D].哈尔滨:哈尔滨工业大学,2010.
[8] 郭心怡,周兆英,谭秋林,等.超声激励下超声刀微裂纹发热的有限元分析[J].科学技术与工程,2014,14(30):172.
[9] 宋远佳,张炜,田干,等.基于超声红外热成像技术的复合材料损伤检测[J].固体火箭技术,2012,35(4):559.
[10] 庄茁,由小川,廖剑晖,等.基于 ABAQUS 的有限元分析和应用[M].北京:清华大学出版社,2009.
[11] 金国锋,张炜,杨正伟,等.界面贴合型缺陷的超声红外热波检测与识别[J].四川大学学报(工程科学版),2013,45(2):167.
[2] 陈赵江,张淑仪,郑江,等.利用有限元方法模拟微裂纹在强超声作用下的摩擦发热现象[J].无损检测,2010,32(11):838.
[3] 缪鹏程,米小兵,张淑仪,等.超声红外热像检测中缺陷发热的瞬态温度场的有限元分析[J].南京大学学报(自然科学版),2005,41(1):98.
[4] 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):96.
[5] HAN X Y,FAVRO L D,OUYANG Z,et al.Thermosonics:detecting cracks and adhesion defects using ultrasonic excitation and infrared imaging[J].The Journal of Adhesion,2001,76(2):151.
[6] 刘元林,梅晨,唐庆菊,等.红外热成像检测技术研究现状及发展趋势[J].机械设计与制造,2015(6):260.
[7] 刘慧.超声红外锁相热像无损检测技术的研究[D].哈尔滨:哈尔滨工业大学,2010.
[8] 郭心怡,周兆英,谭秋林,等.超声激励下超声刀微裂纹发热的有限元分析[J].科学技术与工程,2014,14(30):172.
[9] 宋远佳,张炜,田干,等.基于超声红外热成像技术的复合材料损伤检测[J].固体火箭技术,2012,35(4):559.
[10] 庄茁,由小川,廖剑晖,等.基于 ABAQUS 的有限元分析和应用[M].北京:清华大学出版社,2009.
[11] 金国锋,张炜,杨正伟,等.界面贴合型缺陷的超声红外热波检测与识别[J].四川大学学报(工程科学版),2013,45(2):167.
© 2004-2018 中国地质图书馆版权所有 京ICP备05064691号 京公网安备11010802017129号 地址：北京市海淀区学院路29号 邮编：100083 电话：办公室：(+86 10)66554848；文献借阅、咨询服务、科技查新：66554700 |