A study on fracture characteristic of structural adhesive at bonded specimen made by 3D printer

초록

This study aims at investigating the fracture characteristics of adhesive used at double cantilever beam specimens made by 3D printers. The experiment and analysis were carried out under the same conditions. The lower hole of each test specimen was fixed and the upper hole was subjected to the forced displacement of 5 mm. Experimental results show that the adhesive breakdown characteristics of DCB (double cantilever beam) test specimens have a greater effect on the width of the specimen. At TDCB (taperd double cantilever beam) test specimen, it was found that the reaction force was maintained to the adhesive end when the shape factor was 0.3. And DCB specimen with a half of 40 mm is more secure than the other models. TDCB specimen with shape factor of m = 0.2 is more stable than the other models. As a result of this study, it was found that the debonding analysis of adhesive showed the different results from the actual test. It is considered that the basic data on the adhesive and debonding properties of the structures made of the 3D printer can be obtained.

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