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Non-contact spatially constrained optical scanning methods applied for depth, width and gap measurements.

机译:适用于深度,宽度和间隙测量的非接触式空间受限光学扫描方法。

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摘要

The thesis presents the non-contact laser projection based systems utilized for quantifying the feature dimensions like width, depth and air gaps. Laser diode, Charge coupled device (CCD) and post-processing software using image processing tools are the major components of the non-contact measurement systems. The study involves two methods where the first method comprises of active laser-based triangulation and morphological edge detection for depth and width measurement applications. The second method uses edge detection technique and Dynamic Field of View (DFOV) for gap detection and tracking. Using the developed techniques, the case studies are conducted with smooth plastic fenders with induced artificial deviations, MIG welding seam and different air gap deco finishes. Experimental validations are carried out by comparing the results with commercial systems like 3D scanner and commercial sensor. Also, the Gauge Repeatability and Reproducibility (GR&R) studies are produced to identify the gap measurement tool capabilities interms of accuracy and repeatability.Keywords. Optical Inspection, laser triangulation, edge morphology, laser speckle, gap measurement, Field of View, Gauge Repeatability and Reproducibility.
机译:本文提出了基于非接触激光投影的系统,用于量化特征尺寸,例如宽度,深度和气隙。激光二极管,电荷耦合器件(CCD)和使用图像处理工具的后处理软件是非接触式测量系统的主要组件。这项研究涉及两种方法,第一种方法包括基于激光的主动三角测量和用于深度和宽度测量应用的形态学边缘检测。第二种方法使用边缘检测技术和动态视场(DFOV)进行间隙检测和跟踪。使用已开发的技术,对带有引起人为偏差,MIG焊缝和不同气隙装饰光洁度的光滑塑料护舷进行案例研究。通过将结果与3D扫描仪和商业传感器等商业系统进行比较来进行实验验证。此外,还进行了量规可重复性和可重复性(GR&R)研究,以确定间隙测量工具在准确性和可重复性方面的能力。光学检查,激光三角测量,边缘形态,激光散斑,间隙测量,视场,量规可重复性和可重复性。

著录项

  • 作者

    Thotti Reddy, Konda Reddy.;

  • 作者单位

    Clemson University.;

  • 授予单位 Clemson University.;
  • 学科 Engineering Automotive.Engineering Mechanical.
  • 学位 M.S.
  • 年度 2010
  • 页码 90 p.
  • 总页数 90
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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