A Simulated Surface Quality Inspection System for Stamped Panels

摘要

Surface quality of body exterior is an important contributor to perceptual quality of a vehicle.To ensure a high fidelity finish of a stamped panel,the local panel distortion or imperfections of the surface due to the forming stresses are usually manually audited by the inspection experts under the structured lightings.In order to identify and minimize the surface quality issue in an early stage of product development,it is desired to integrate a virtual inspection system with the forming analysis.In this work,a simulation framework is developed to mimic the Green Room inspection environment.To simulate the light reflection,a ray-tracing based method is introduced.To improve the alignment between the panels for analyzing the reflection patterns,two registration methods are developed.The validation studies showed that the proposed system is able to identify and visualize the local surface distortion area in stamped panels produced by the forming simulation analysis.