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基于空气中冲击波信号能量的激光冲击强化在线检测方法
Alternative TitleOnline Detection Method of Laser Shock Peening Based on Shock Wave Signal Energy in Air
吴嘉俊1,2,3; 刘学军1,4; 赵吉宾1,2; 乔红超1,2; 孙博宇1,2; 陆莹1,2; 郭跃彬5
Department工艺装备与智能机器人研究室
Source Publication表面技术
ISSN1001-3660
2019
Volume48Issue:10Pages:100-106
Indexed ByEI ; CSCD
EI Accession number20195107875867
CSCD IDCSCD:6598048
Contribution Rank1
Funding Organization国家基金委-辽宁省联合基金(U1608259) ; 国家自然科学基金(51501219) ; 国家重点研发计划(2016YFB1102704) ; 国家科技支撑计划(2015BAF08B01-01)
Keyword激光冲击强化 冲击波 信号能量 激光能量 残余应力 在线检测
Abstract

目的为克服激光冲击强化现有离线检测方法的缺点,提出了一种基于空气中冲击波信号能量的激光冲击强化在线检测方法。方法利用波长为1064 nm、脉宽为14 ns、单脉冲能量为5~7 J的Nd:YAG激光器对经过振动时效处理的TC16钛合金试件进行激光冲击强化处理。用自主研制的信号放大器对空气中的冲击波信号进行一级放大后,再经前置放大器、数据采集卡传输到计算机控制系统,从而实现对空气中冲击波信号的采样、存储、滤波和数据分析,并从中提取冲击波信号能量。用X-350A型X射线应力测定仪测量TC16钛合金试件经激光冲击强化处理后的表面残余应力。最后对所得实验数据进行多项式拟合,以获得材料表面残余压应力与冲击波信号能量之间的经验公式。结果经激光冲击强化处理后,材料表面形成了一定大小的残余压应力。随着激光能量的增加,材料表面残余压应力及冲击波信号能量均增加,且二者的增加趋势一致。结论在激光冲击强化过程中,对空气中传播的冲击波信号进行采集和提取其信号能量,可以预测试件经激光冲击强化处理后的残余应力,能够准确判断激光冲击强化质量,从而实现工业过程的在线检测。

Other Abstract

The work aims to propose an online detection method of laser shock peening based on shock wave signal energy in air to overcome the existing disadvantages of offline laser shock peening detection methods. The TC16 titanium alloy samples after the treatment of vibration stress relief were treated by Nd:YAG laser with a wavelength of 1064 nm, pulse width of 14 ns and pulse energy of 5~7 J. The shock wave signals in air were first amplified by the signal amplifier that independently developed by our research group, then transmitted to the computer control system through the preamplifier and the data acquisition card successively. So the sampling, storage, filtering and data analysis of shock wave signals in air were realized, then the shock wave signal energy was extracted. The surface residual stress of TC16 titanium alloy samples after the treatment of laser shock peening were measured by the X-350A X-ray stress tester. Finally, according to the obtained experimental data, an empirical formula between the surface residual stress of the material and the shock wave signal energy was obtained by polynomial fitting. The experimental results shown that after treatment of laser shock peening, there are a certain amount of residual compressive stress was formed on the surface of the material. At the same time, both the surface residual stress and shock wave signal energy were increased with the increases of laser energy, and their growth trends are consistent. In conclusion, during the process of laser shock peening, by collecting the shock wave signals propagating in air and extracting the shock wave signal energy, the residual stress of materials can be predicted and the quality of laser shock peening can be judged accurately, which will realize the online control of industrial process.

Language中文
Citation statistics
Document Type期刊论文
Identifierhttp://ir.sia.cn/handle/173321/25802
Collection工艺装备与智能机器人研究室
Corresponding Author赵吉宾
Affiliation1.中国科学院沈阳自动化研究所
2.中国科学院机器人与智能制造创新研究院
3.中国科学院大学
4.湖南工业大学
5.阿拉巴马大学
Recommended Citation
GB/T 7714
吴嘉俊,刘学军,赵吉宾,等. 基于空气中冲击波信号能量的激光冲击强化在线检测方法[J]. 表面技术,2019,48(10):100-106.
APA 吴嘉俊.,刘学军.,赵吉宾.,乔红超.,孙博宇.,...&郭跃彬.(2019).基于空气中冲击波信号能量的激光冲击强化在线检测方法.表面技术,48(10),100-106.
MLA 吴嘉俊,et al."基于空气中冲击波信号能量的激光冲击强化在线检测方法".表面技术 48.10(2019):100-106.
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