Digital image correlation on adhesive used in automotive industry

Muhamad, Hafiy (2019) Digital image correlation on adhesive used in automotive industry. Project Report. Universiti Teknikal Malaysia Melaka, Melaka, Malaysia. (Submitted)

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Abstract

This research focusing on the mechanical properties of the adhesive material (sikaflex) under tensile test which used in the automotive industry. Sikaflex is an adhesive which contains polyurethane as chemical based which categorize as polymer. There are various of application of sikaflex adhesive in the automotive industry such as bonding material at joining parts. In term of safety, the sikaflex adhesive react without no sudden catastrophic joint failure. Sikaflex is a ductile, high mechanical strength and stiffness adhesive material. This research also analyses the deformation of sikaflex stress-strain relationships and failure modes under tensile loading. Tensile test is testing for sikaflex adhesive to obtain mechanical characteristic varying by the rate of measurement and force applied to the specimen. The test generates stress-strain graph, strength of material and deformation of the material. The tensile testing machine used is Shimadzu Precision Universal Tester AG-X series. Digital Image Correlation (DIC) is a non-contact technique of Non-Destructive Test (NDT). Digital Image Correlation which is an open source Ncorr software using Matlab platform which used to measure full-field deformation of the sikaflex adhesive. The analysis basic principle is to compare the reference image (before deformation) and current image (after deformation) to analyse the full-field displacement. This experiment used Casio EXILIM EX-ZR 1200 which is a digital camera to capture specimen deformation during the testing. This research also to prove that a digital image correlation is low cost method which by utilize the digital camera to generate a good result of full-field displacement on the specimen. The result generates by the machine been compared with the result that obtained from the DIC method for validation of the final result. The deviation and error in displacement measurement of the result is discussed in this paper.

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