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research-article

Non-rigid registration for form defect identification of thin parts

[+] Author and Article Information
Thiebaut François

Associate Professor, LURPA, ENS Cachan, Univ. Paris-Sud, Université Paris-Saclay, 94235 Cachan, France
francois.thiebaut@ens-cachan.fr

Soumiya Bendjebla

PhD Student, LURPA, ENS Cachan, Univ. Paris-Sud, Université Paris-Saclay 94235 Cachan, France
soumiya.bendjebla@ens-cachan.fr

Yann Quinsat

Associate Professor, Professor, LURPA, ENS Cachan, Univ. Paris-Sud, Université Paris-Saclay, 94235 Cachan, France
yann.quinsat@ens-cachan.fr

Claire Lartigue

Professor, LURPA, ENS Cachan, Univ. Paris-Sud, Université Paris-Saclay, 94235 Cachan, France
claire.lartigue@ens-cachan.fr

1Corresponding author.

ASME doi:10.1115/1.4039640 History: Received June 20, 2017; Revised February 21, 2018

Abstract

The paper discusses thin part inspection using 3D non rigid registration. The main objective is to match measurement point data to its nominal representation, so as to identify form defects. Since form defects have the same size order as the thickness of the part, establishing such matching is a challenging task. The originality of the method developed in this paper is using a deformable Iterative Closet Point algorithm (ICP), and integrating modal approach to express form defects. The method described improves the matching through iteration of the ICP, and establishes a definition of the error. The results of the application show that the present method is efficient.

Copyright (c) 2018 by ASME
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