An automatic measurement system for the wall thickness of corrugated plate based on laser triangulation method. (January 2023)

• Record Type: Journal Article
• Authors: Wu, Chengxing; Chen, Baijin
• Is Part Of: Advanced engineering informatics. Volume 55(2023)
• Publication Date: 2023-01
• Subjects: Corrugated plate -- Wall thickness -- Laser triangulation measurement -- Normal vector -- Surface reconstruction; Computer-aided engineering -- Periodicals; Engineering -- Data processing -- Periodicals; 620.00285
• DOI: 10.1016/j.aei.2022.101814
• Languages: English
• ISSNs: 1474-0346

Abstract

Highlights: A digital measurement system for the corrugated plate in a chevron-type plate heat exchanger was designed based on laser triangulation method. A search algorithm for the optimal matching reconstruction mesh was proposed. An automatic detection method for the wall thickness of corrugated plate was discussed. Several comparison experiments were conducted to validate the efficiency of our proposed measurement method. Abstract: Wall thickness is an important parameter used in the characterization of the surface quality of chevron corrugated plates. However, current measurement techniques such as contact mechanical or destructive modes are timing-consuming and are limited by the complex morphology of the measured object. In this study, an optical measurement system is established for experimental evaluation of the wall thickness. Its optical design and working characteristic are described based on the triangulation principle. By performing normal vector estimation, and combining with the search results about the best possible reconstructed mesh surface, the wall thickness at each measurement point can be evaluated. A series of comparison experiments with the maximum deviation 0.043 mm show that our proposed method can provide effective and automatic technical support for dimensional detection of complex components.