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

被引：16
|
作者：
Ranade, Shantanu R. [1 ]
Guan, Youliang [2 ]
Ohanehi, Donatus C. [2 ]
Dillard, John G. [3 ]
Batra, Romesh C. [2 ]
Dillard, David A. [2 ]
机构：
[1] Virginia Polytech Inst & State Univ, Macromol & Interfaces Inst, Blacksburg, VA 24061 USA
[2] Virginia Polytech Inst & State Univ, Dept Biomed Engn & Mech, Blacksburg, VA 24061 USA
[3] Virginia Polytech Inst & State Univ, Dept Chem, Blacksburg, VA 24061 USA
来源：
INTERNATIONAL JOURNAL OF ADHESION AND ADHESIVES | 2014年 / 55卷
基金：
美国国家科学基金会;
关键词：
Adhesives; Structural adhesives; Bond line thickness; DCB; Fracture; Epoxy adhesives; Combinatorial characterization; Fracture energy; SENB; Plastic zone; TOUGHENED EPOXY ADHESIVE; CRACK-TIP; JOINTS; TOUGHNESS; FATIGUE; BEHAVIOR; FAILURE; STRESS;
D O I：
10.1016/j.ijadhadh.2014.08.006
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
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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页码：155 / 160
页数：6
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