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

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Abstract

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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Acknowledgments

This research was supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education (NRF-2018R1D1 A1B07041627).

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Authors and Affiliations

  1. Department of Mechanical Engineering, Graduate School, Kongju University, Cheonan, Korea

    Jae Won Kim

  2. Department of Mechanical Engineering, Graduate School, Inha University, 100 Inha-ro, Michuhol-gu, Incheon, Korea

    Chang Ho Jung

  3. Division of Mechanical & Automotive Engineering, Kongju University, Cheonan, Korea

    Jae Ung Cho

Authors
  1. Jae Won Kim
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  2. Chang Ho Jung
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Corresponding author

Correspondence to Jae Ung Cho.

Additional information

Recommended by Editor Chongdu Cho

Jae Won Kim is a graduate school student in the Division of Mechanical Engineering of Kongju National University, Cheonan. His field of specialization are fracture mechanics (dynamic impact), impact fracture of composite material), fatigue & strength evaluation, and durability & optimum design.

Chang-Ho Jung is a graduate student in the Department of Mechanical Engineering at Ph.D. course of Inha University, Incheon, Republic of Korea. His research field is structural analysis using CAE, evaluation of material strength and fatigue.

Jae Ung Cho received his M.S. and doctor degrees in Mechanical Engineering from Inha University, Incheon, Korea, in 1982 and 1986, respectively. Now he is a Professor in Mechanical & Automotive Engineering of Kongju National University, Korea. He is interested in the areas of fracture mechanics (dynamic impact), composite material, fatigue and strength evaluation, and so on.

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Kim, J.W., Jung, C.H. & Cho, J.U. A study on fracture characteristic of structural adhesive at bonded specimen made by 3D printer. J Mech Sci Technol 34, 3295–3302 (2020). https://doi.org/10.1007/s12206-020-0721-3

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  • DOI: https://doi.org/10.1007/s12206-020-0721-3

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