Asymmetric three-point bending of a layered beam containing an interior interface crack is analyzed on the basis of the classical beam theory. Axial compressive and tensile forces are induced by bending in the parts of the beam above and below the delamination, and they are determined by modeling the cracked part as two lapped beams jointed together at the corners of both beams. When the magnitude of the applied load is small, the beam deflects, retaining the mutual contact of whole crack faces, but as the applied load reaches a critical value, local delamination buckling of the compressed part occurs. The relation between the magnitude of the applied load and the deflection at the point of load application is found to be nearly bilinear. The validity of this prediction is confirmed by experiments. It is also shown that once the delamination buckling occurs, the energy release rate generally becomes larger as compared with the case of a perfect contact of delaminated surfaces.
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July 2010
Research Papers
Local Delamination Buckling of a Laminated Beam due to Three-Point Bending
M. Toya,
M. Toya
Professor
Department of Mechanical Engineering, Graduate School of Science and Engineering,
e-mail: toyamasa@mech.kagoshima-u.ac.jp
Kagoshima University
, 1-21-40, Korimoto, Kagoshima 890-0065, Japan
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K. Fukagawa,
K. Fukagawa
Lecturer
Department of Technology Education, Faculty of Education,
Kagoshima University
, 1-20-6, Korimoto, Kagoshima 890-0065, Japan
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M. Aritomi,
M. Aritomi
Associate Professor
Department of Mechanical Engineering, Graduate School of Science and Engineering,
Kagoshima University
, 1-21-40, Korimoto, Kagoshima 890-0065, Japan
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M. Oda,
M. Oda
Assistant Professor
Department of Mechanical Engineering, Graduate School of Science and Engineering,
Kagoshima University
, 1-21-40, Korimoto, Kagoshima 890-0065, Japan
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T. Miyauchi
T. Miyauchi
Department of Mechanical Engineering, Graduate School of Science and Engineering,
Kagoshima University
, 1-21-40, Korimoto, Kagoshima 890-0065, Japan
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M. Toya
Professor
Department of Mechanical Engineering, Graduate School of Science and Engineering,
Kagoshima University
, 1-21-40, Korimoto, Kagoshima 890-0065, Japan
e-mail: toyamasa@mech.kagoshima-u.ac.jp
K. Fukagawa
Lecturer
Department of Technology Education, Faculty of Education,
Kagoshima University
, 1-20-6, Korimoto, Kagoshima 890-0065, Japan
M. Aritomi
Associate Professor
Department of Mechanical Engineering, Graduate School of Science and Engineering,
Kagoshima University
, 1-21-40, Korimoto, Kagoshima 890-0065, Japan
M. Oda
Assistant Professor
Department of Mechanical Engineering, Graduate School of Science and Engineering,
Kagoshima University
, 1-21-40, Korimoto, Kagoshima 890-0065, Japan
T. Miyauchi
Department of Mechanical Engineering, Graduate School of Science and Engineering,
Kagoshima University
, 1-21-40, Korimoto, Kagoshima 890-0065, Japan
J. Eng. Mater. Technol. Jul 2010, 132(3): 031007 (9 pages)
Published Online: June 16, 2010
Article history
Received:
November 30, 2009
Revised:
March 12, 2010
Online:
June 16, 2010
Published:
June 16, 2010
Citation
Toya, M., Fukagawa, K., Aritomi, M., Oda, M., and Miyauchi, T. (June 16, 2010). "Local Delamination Buckling of a Laminated Beam due to Three-Point Bending." ASME. J. Eng. Mater. Technol. July 2010; 132(3): 031007. https://doi.org/10.1115/1.4001444
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