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A study on the fracture characteristics of tapered double cantilever specimens bonded with aluminum foams of varying thicknesses

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Abstract

In this study, the fracture characteristics on the adhesive interfaces in the structures composed of aluminum foam were investigated by using three kinds of TDCB specimens with the thicknesses of 25 mm, 50 mm and 75 mm and the length of 200 mm. According to the test results for the 25 mm-thick specimens, the maximum reaction force of about 200 N was shown when forced displacement progressed as the amount of about 6 mm to 7 mm. And the reaction force nearly was disappeared after the forced displacement progressed as the amount of about 22 mm. Similar trends were observed in cases of other specimens with thicknesses of 50 mm and 75 mm. As the forced displacement was gradually increased,fractures began to occur with the separation from the bonded interface beginning when the equivalent stress happened at the bonded interface was larger than the adhesive stress of 0.167 MPa at the bonding interface. Such experimental results can be verified by simulation analysis results. Therefore, fracture characteristics of aluminum foam consisting of the porous cores are considered to be identifiable through only simulations instead of experiments without requiring significant cost or time.

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Authors and Affiliations

  1. Department of Mechanical Engineering, Graduate School, Kongju National University, 1223-24, Cheonan-daero, Seobuk-gu, Cheonan-si, Chungcheongnam-do, 331-717, South Korea

    Hong Peng Sun

  2. Division of Mechanical & Automotive Engineering, Kongju National University, 1223-24, Cheonan-daero, Seobuk-gu, Cheonan-si, Chungcheongnam-do, 331-717, South Korea

    Jae Ung Cho

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  1. Hong Peng Sun
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  2. Jae Ung Cho
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Correspondence to Jae Ung Cho.

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Sun, H.P., Cho, J.U. A study on the fracture characteristics of tapered double cantilever specimens bonded with aluminum foams of varying thicknesses. Int. J. Precis. Eng. Manuf. 16, 2179–2184 (2015). https://doi.org/10.1007/s12541-015-0280-1

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  • DOI: https://doi.org/10.1007/s12541-015-0280-1

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