Journal
INTERNATIONAL JOURNAL OF ADHESION AND ADHESIVES
Volume 55, Issue -, Pages 155-160Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.ijadhadh.2014.08.006
Keywords
Adhesives; Structural adhesives; Bond line thickness; DCB; Fracture; Epoxy adhesives; Combinatorial characterization; Fracture energy; SENB; Plastic zone
Funding
- National Science Foundation (NSF/CMMI Award) [0826143]
- Div Of Civil, Mechanical, & Manufact Inn
- Directorate For Engineering [0826143] Funding Source: National Science Foundation
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The characterization of fracture energy (G(IC)) 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. (C) 2014 Elsevier Ltd. All rights reserved.
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