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Fracture behavior on the structures of DCB jointed with aluminum foam in tearing mode

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Abstract

Recently, the tightening method on the machine structure has been used by only adhesive rather than existing bolts and nuts because of light weight problem. As for the porous material such as aluminum foam, the tightening is also possible by using adhesive in the aspect of material's characteristics. In case of the structure tightened by using only adhesive, it is necessary that the fracture toughness data as a part of adhesive joint are requested in order to use safely. Because the adhesive failure characteristic of the aluminum foam which is the porous material is different from the non-porous material, the study on the fracture toughness of the adhesive interface of aluminum is important. In this study, the static experiment was performed on the adhesive specimen with the aluminum foam of DCB on tearing mode. The thicknesses of specimens were 35 mm, 45 mm, and 55 mm, respectively. In case of 35 mm thickness specimen, the maximum reaction of about 0.57 kN occurred when the forced displacement was progressed by about 7 mm. When the forced displacement was progressed by about 8 mm, the maximum reaction of about 0.68 kN occurred in case of 55 mm thickness specimen. And the simulation analysis was carried by using the finite-element analysis program of ANSYS in order to verify the experimental results. This study showed the similar trend at the results between experiment and simulation. Through the results of this study, it can be thought that the simulation analysis data may be applied to the actual jointed part of porous material.

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Authors and Affiliations

  1. Division of Mechanical Engineering, Graduate School, Kongju National University, 1223-24, Cheonan-daero, Seobuk-gu, Cheonan-si, Chungcheongnam-do, 31080, South Korea

    Jung Ho Lee

  2. Department of Mechanical and Automotive Engineering, Kongju National University, 1223-24, Cheonan-daero, Seobuk-gu, Cheonan-si, Chungcheongnam-do, 31080, South Korea

    Jae Ung Cho

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  1. Jung Ho Lee
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  2. Jae Ung Cho
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Correspondence to Jae Ung Cho.

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Lee, J.H., Cho, J.U. Fracture behavior on the structures of DCB jointed with aluminum foam in tearing mode. Int. J. Precis. Eng. Manuf. 17, 897–902 (2016). https://doi.org/10.1007/s12541-016-0109-6

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  • DOI: https://doi.org/10.1007/s12541-016-0109-6

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