Research on Morphology Detection of Metal Additive Manufacturing Process Based on Fringe Projection and Binocular Vision
Source abstract
Abstract
This paper considers the three-dimensional (3D) shape measurement of metal parts during an additive manufacturing process in a direct energy deposition (DED) printing system with high temperature and strong light; a binocular measurement system based on ultraviolet light source projection is built using fringe projection and Fourier analysis. Firstly, ultraviolet light projection and an optical filter are used to obtain high-quality fringe patterns in an environment with thermal radiation. Then, Fourier analysis is carried out by using a single deformed fringe, and a spatial phase unwrapping algorithm is applied to obtain an unambiguous unwrapping phase, which is used as the guiding basis for the binocular matching process and 3D shape reconstruction. Finally, the accuracy of the measuring system is evaluated using a standard ball-bar gauge and the measurement error of this system is within 0.05 mm @ 100 × 100 mm. The results show that the system can measure 3D shape changes of metal parts in the additive manufacturing process. The proposed method and system have the potential to be used for online inspection and quality control of additive manufacturing.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Optical measurement and interference techniques · Industrial Vision Systems and Defect Detection · Additive Manufacturing Materials and Processes
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
College of Electronics and Information Engineering, Sichuan University, Chengdu 610065, China
Funding
National Natural Science Foundation of China · Sichuan Science and Technology Program · Cooperative research project of Chunhui plan of Ministry of Education
References (29)
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