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Abstract
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The polymer composite columns are widely used in mechanical infrastructure due to their high compressive strength and low weight. However, the use of composites in structures has risks such as matrix cracking and delamination due to sudden pressure loads. Measuring the critical load with the buckling test is one of the best ways to predict and evaluate the stability of a structure without experiencing a sudden change in its configuration. In this study, the stability of carbon fiber reinforced composite plates was investigated by measuring the horizontal deflection of the plates under the increasing load using the stereo vision scanner. The measurements were conducted for composite plates with the width of 15, 20 and 25 mm at the end conditions of both fixed, both pinned, and one fixed-one pinned. Then, the finite element models were performed to evaluate the established physical experiment. It was observed that the average percentage error of the maximum horizontal deflection measured in numerical simulation compared to the experimental test using the machine vision method was 3.44%. The results also showed that the machine vision method could effectively evaluate the buckling behavior of composite columns.
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