A tapered bondline thickness double cantilever beam (DCB) specimen geometry for combinatorial fracture studies of adhesive bonds

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[1] Ranade, Shantanu R.
[2] Guan, Youliang
[3] Ohanehi, Donatus C.
[4] Dillard, John G.
[5] Batra, Romesh C.
[6] Dillard, David A.
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Dillard, David A. | 1600年 / Elsevier Ltd卷 / 55期
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The characterization of fracture energy (GIc) of an adhesive joint as a function of bondline thickness requires multiple specimens covering a range of bondline thicknesses. In this work; DCB specimens with linearly increasing or decreasing bondline thickness were studied for their feasibility to determine fracture energy as a function of bondline thickness. In a combinatorial characterization sense; this approach explores the possibility to characterize the effect of bondline thickness on fracture energy through fewer tests than those required for a one at a time characterization approach; thus offering a significant reduction in characterization times. Fracture energies were characterized under mode I loading conditions using corrected beam theory. The results obtained from linearly increasing or decreasing bondline thickness specimens showed good agreement with those obtained from specimens with a range of constant bondline thicknesses. © 2014 Elsevier Ltd;
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