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激光诱导等离子体声波信号实时采集分析软件系统

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文章导航 > 光电工程 > 2019 Vol. 46 > No. 8 > 180534

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刘学军, 吴嘉俊, 乔红超, 等. 激光诱导等离子体声波信号实时采集分析软件系统[J]. 光电工程, 2019, 46(8): 180534. doi: 10.12086/oee.2019.180534
引用本文: 刘学军, 吴嘉俊, 乔红超, 等. 激光诱导等离子体声波信号实时采集分析软件系统[J]. 光电工程, 2019, 46(8): 180534. doi: 10.12086/oee.2019.180534
shu
Liu Xuejun, Wu Jiajun, Qiao Hongchao, et al. The real-time acquisition and analysis software system for laser-induced plasma acoustic wave signal[J]. Opto-Electronic Engineering, 2019, 46(8): 180534. doi: 10.12086/oee.2019.180534
Citation: Liu Xuejun, Wu Jiajun, Qiao Hongchao, et al. The real-time acquisition and analysis software system for laser-induced plasma acoustic wave signal[J]. Opto-Electronic Engineering, 2019, 46(8): 180534. doi: 10.12086/oee.2019.180534
shu

激光诱导等离子体声波信号实时采集分析软件系统

    • 1.

      中国科学院沈阳自动化研究所，辽宁 沈阳 110016

    • 2.

      中国科学院机器人与智能制造创新研究院，辽宁 沈阳 110016

    • 3.

      湖南工业大学计算机学院，湖南 株洲 412007

  • 基金项目:
    国家基金委-辽宁省联合基金资助项目(U1608259)；国家自然科学基金资助项目(51501219)；国家重点研发计划(2016YFB1102704)；国家科技支撑计划(2015BAF08B01-01)
详细信息
    作者简介:
  • 刘学军(1993-)，男，硕士研究生，主要从事工业大数据处理与激光冲击强化信号处理的研究。E-mail：idliuxuejun@163.com
    • *通讯作者: 乔红超(1982-)，男，硕士，副研究员，主要从事表面工程的研究。E-mail：hcqiao@sia.cn

  • 中图分类号: O439; TP311.5

The real-time acquisition and analysis software system for laser-induced plasma acoustic wave signal

    • 1.

      Shenyang Institute of Automation, Chinese Academy of Science, Shenyang, Liaoning 110016, China

    • 2.

      Institutes for Robotics and Intelligent Manufacturing, Chinese Academy of Sciences, Shenyang, Liaoning 110016, China

    • 3.

      School of Computer, Hunan University of Technology, Zhuzhou, Hunan 412007, China

  • Fund Project: Supported by NSFC-Liaoning Province United Foundation (U1608259), National Natural Science Foundation of China (51501219), National Key Development Program (2016YFB1192704), and National Key Technology Research and Development Program of the Ministry of Science and Technology of China (2015BAF08B01-01)
More Information
    摘要

  • 为实现激光冲击强化在线检测，针对激光诱导等离子体声波现象，采用SIA-AEDAC-01型声发射数据采集卡采集声波信号，研究并设计了一种激光诱导等离子体声波信号实时采集分析软件系统。设计了该系统的可行性和准确性测试实验，首先用激光冲击强化在线检测系统采集传播在空气中的激光诱导等离子体声波信号，并从中提取等离子体声波信号能量；利用X射线应力分析仪测量试件强化后的残余应力以验证激光冲击强化实验的可靠性。实验结果表明，本文设计开发的软件系统能实时采集分析激光冲击强化过程中的等离子体声波信号，并能准确提取每一次冲击强化产生的声波信号能量；且随着激光冲击能量的增加，等离子体声波信号能量和试件表面残余压应力都增大，且二者曲线线型一致，说明该软件系统准确可靠，满足激光冲击强化在线检测的需求。

    In order to realize the online detection of laser shock processing and aim at the phenomenon of laser-induced plasma acoustic wave, the SIA-AEDAC-01 acoustic emission acquisition card is used to collect acoustic wave signals. The real-time acquisition and analysis software system for laser-induced plasma acoustic wave signal is studied and designed. The test experiment for feasibility and accuracy of the system is designed. Firstly, the laser-induced plasma acoustic wave signal propagating in air is collected by the online detection laser shock processing system, and then the system gets the laser-induced plasma acoustic wave signal energy. The residual stress of the test pieces after the treatment of laser shock processing was measured by an X-ray stress analyzer to verify the reliability. The experimental results show that the laser-induced plasma acoustic wave signal can be collected and analyzed in real-time by the real-time acquisition and analysis software system, which is designed and developed in this work, and the software system can accurately get the acoustic signal energy. At the same time, both the acoustic wave signal energy and the surface residual stress of the test pieces are increased with the laser energy, and their change curve is consistent. In conclusion, the real-time acquisition and analysis software system for laser-induced plasma acoustic wave signal can satisfy the requirements of online detection of laser shock processing with accurate and reliable performance, and meet the online monitoring requirements of laser shock processing.

    • Overview

  • Overview:Laser shock processing (LSP) is an innovative surface treatment technique. It involves irradiation of the thin opaque coating layer with high-energy short-width laser pulses causing instantaneous vaporization of the surface layer into high-temperature high-pressure laser-induced plasma. The expansion of the laser-induced plasma generates high speed compressive shock waves that propagate into the components. Then the metal material is plastically deformed and generates compressive residual stress in the surface. The surface residual compressive stress is generally used to evaluate the effect of the process of LSP. The main methods of measuring surface residual compressive stress are off-line and low efficiency. It is necessary to develop the non-destructive online detection technology of LSP. The correlation analysis showed the laser-induced plasma acoustic waves can comprehensively reflect the parameter characteristics in the process of LSP. The analysis and extraction of the characteristics of acoustic wave can be used for real-time online detection of the LSP. The real-time acquisition and analysis software system for laser-induced plasma acoustic wave signal based on SIA-AEDAC-01 acoustic emission acquisition card is developed in this work to realize the online detection of LSP. Firstly, the laser-induced plasma acoustic wave signal propagating in air is collected and its energy is obtain by the software system. The residual stress of the test pieces after the treatment of LSP was measured by an X-ray stress analyzer to verify the reliability. The experimental results show that the laser-induced plasma acoustic wave signal can be collected and analyzed in real-time by the software system which can accurately get the acoustic signal energy. At the same time, both the acoustic wave signal energy and the surface residual stress of the test pieces are increased with the laser energy, and their change curve is consistent. In conclusion, the software system can satisfy the requirements of online detection of LSP with accurate and reliable performance.

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  • 图 1  SIA-AEDAC-01型声发射数据采集卡的硬件结构

    Figure 1.  The hardware structure of SIA-AEDAC-01 acoustic emission data acquisition card

    下载: 全尺寸图片 幻灯片

    图 2  软件基本架构

    Figure 2.  The basic framework of software

    下载: 全尺寸图片 幻灯片

    图 3  软件功能模块设计

    Figure 3.  The design of software function module

    下载: 全尺寸图片 幻灯片

    图 4  软件线程设计

    Figure 4.  The design of software thread

    下载: 全尺寸图片 幻灯片

    图 5  程序体系结构

    Figure 5.  The architecture of program

    下载: 全尺寸图片 幻灯片

    图 6  实验装置示意图

    Figure 6.  The diagram of experimental device

    下载: 全尺寸图片 幻灯片

    图 7  等离子体声波信号波形图

    Figure 7.  The diagram of plasma acoustic waveform

    下载: 全尺寸图片 幻灯片

    图 8  激光能量对试件表面残余压应力的影响

    Figure 8.  Effect of laser energy on surface residual com-pressive stress of samples

    下载: 全尺寸图片 幻灯片

    图 9  激光能量对等离子体声波信号能量的影响

    Figure 9.  Effect of laser energy on plasma acoustic wave signal energy

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    表 1  SIA-AEDAC-01型声发射数据采集卡的主要技术参数

    Table 1.  The main technical parameters of SIA-AEDAC-01 acoustic emission data acquisition card

    Technical parameter Value
    Data interface PCI-Express 100 Mb/s
    Sampling precision 24 bit
    Sampling rate Maximum 5 MS/s
    Bandwidth of signal frequency 1 Hz~400 kHz
    Filters Simulation/Digital
    Channel Double
    下载: 导出CSV

    表 2  激光器技术参数

    Table 2.  The technical parameters of laser

    Parameters Value
    Operation material Nd:YAG
    Wavelength/nm 1064
    Pulse energy/J 0~7
    Working frequency/Hz Singal, 0.25, 0.5, 1, 2
    Pulse width/ns 10~30
    Energy distribution Gaussian distribution
    Spot shape Circle
    Spot diameter/mm 2~4
    下载: 导出CSV

    表 3  不同激光能量下对应的激光功率密度

    Table 3.  Laser power intensity of each associated laser energy

    Laser energy/J Laser power intensity/(GW/cm2)
    5 5.80
    5.5 6.38
    6 6.96
    6.5 7.54
    7 8.12
    下载: 导出CSV
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收稿日期:  2018-10-18
修回日期:  2019-01-18
刊出日期:  2019-08-01

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