应用激光扫描热成像和回归分析确定聚合物复合材料的缺陷特征

IF 0.9 4区 材料科学 Q4 MATERIALS SCIENCE, CHARACTERIZATION & TESTING Russian Journal of Nondestructive Testing Pub Date : 2024-04-09 DOI:10.1134/S1061830923601319
A. G. Divin, S. V. Ponomarev, S. V. Mishchenko, Yu. A. Zakharov, N. A. Karpova, A. A. Samodurov, D. Yu. Golovin, A. I. Tyurin
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引用次数: 0

摘要

摘要 激光点扫描热成像方法灵敏度高,可以可靠地检测聚合物复合材料产品的表面和次表面缺陷。在使用这种方法时,使用机器人机械手作为扫描设备,可以检测小尺寸的曲面物体,或进一步检查其他方法发现的有问题的区域。文章介绍了基于五轴机械手、激光功率高达 3 W、波长为 405 nm 的激光扫描热成像机器人综合系统以及 COX CG640 热成像仪的布局。我们提出了一种处理实验数据的技术,并开发了回归模型,以便能够沿轨迹测量缺陷的大小并确定其位置。为了测试该方案,用玻璃纤维层压板制作了一个对照样品,其中包括 "分层 "类型的人工缺陷,其形式为不同大小的正方形。结果表明,回归模型的确定系数 R2 不低于 0.94,缺陷模型和横向尺寸的均方根误差分别不低于 0.2 和 1.5 平方毫米。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

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Application of Laser Scannung Thermography and Regression Analysis to Determine Characteristics of Defects in Polymer Composite Materials

The method of laser point scanning thermography is highly sensitive and allows for reliable detection of surface and subsurface defects in products made of polymer composite materials. When implementing this method, the use of robotic manipulators as a scanning device makes it possible to inspect small-sized curved surface objects or to further examine questionable areas identified by other methods. The article provides information about the layout of a robotic complex for laser scanning thermography based on a five-axis robotic manipulator, laser power up to 3 W and wavelength 405 nm, as well as a COX CG640 thermal imager. A technique for processing experimental data has been proposed and regression models have been developed to make it possible to measure the size of defects along the trajectory and determine their location. To test the protocol, a control sample was made from fiberglass laminate, including artificial defects of the “delamination” type, in the form of squares of various sizes. The coefficient of determination R2 of regression models turned out to be no worse than 0.94, the root mean square error of the defect model and the transverse size were no worse than 0.2 and 1.5 mm2, respectively.

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来源期刊
Russian Journal of Nondestructive Testing
Russian Journal of Nondestructive Testing 工程技术-材料科学:表征与测试
CiteScore
1.60
自引率
44.40%
发文量
59
审稿时长
6-12 weeks
期刊介绍: Russian Journal of Nondestructive Testing, a translation of Defectoskopiya, is a publication of the Russian Academy of Sciences. This publication offers current Russian research on the theory and technology of nondestructive testing of materials and components. It describes laboratory and industrial investigations of devices and instrumentation and provides reviews of new equipment developed for series manufacture. Articles cover all physical methods of nondestructive testing, including magnetic and electrical; ultrasonic; X-ray and Y-ray; capillary; liquid (color luminescence), and radio (for materials of low conductivity).
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