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http://dx.doi.org/10.14775/ksmpe.2019.18.11.063

Study on Size Evaluation by Surface Expansion for Soft Polymer Foam  

Kim, Min-Woo (School of Mechanical Engineering, Korea Maritime & Ocean UNIV.)
Cho, Chong-Rae (School of Mechanical Engineering, Korea Maritime & Ocean UNIV.)
Kim, Myoung-Hun (Korea Institute of Footwear and Leather Technology)
Publication Information
Journal of the Korean Society of Manufacturing Process Engineers / v.18, no.11, 2019 , pp. 63-68 More about this Journal
Abstract
The dimensional quality of flexible foams is often difficult to be evaluated through general machine vision inspection methods due to the free deformation of the outer shape. For the evaluation of the dimensions of flexible foams, methods of estimating the size of the product through the expansion rate of the product surface are evaluated. Specimens with various dimensions and surface gratings are prepared, and the degree of surface expansion is measured through machine vision. The correlation, between the measured surface grid size and the actual size of test specimens, is analyzed. We further analyze the correlation between the size of test specimens and the position of the surface grid. This study provides a basis for estimating the actual dimensions of specimens by measuring the surface expansion of flexible foams.
Keywords
Machine vision; Size Inspection; Soft Polymer Foam; Surface Expansion;
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