Bearing strength and failure behavior of bolted composite joints (part I: Experimental investigation)

被引:195
作者
Xiao, Y [1 ]
Ishikawa, T [1 ]
机构
[1] Japan Aerosp Explorat Agcy, Adv Composites Evaluat Technol Ctr, Mitaka, Tokyo 1810015, Japan
关键词
composite materials; bearing strength; failure mechanisms; non-destructive testing; mechanically fastened joint;
D O I
10.1016/j.compscitech.2005.02.011
中图分类号
TB33 [复合材料];
学科分类号
摘要
The experimental investigations described in this paper were conducted in order to study the strength and failure of mechanically fastened composite joints. Two different types of polymer matrix-based Carbon Fiber Reinforced Plastic laminates were selected to evaluate the effect of resin properties on bearing response. A special measurement system using a non-contact electro-optical extensometer to measure hole elongation is proposed. During static tensile testing, the response of bearing damage was monitored by acoustic emission measurement. Several specimens were observed by means of soft X-ray radiography and SEM at different loading levels to assess internal damage. The observations indicate that the bearing failure can be outlined as a process of compressive damage accumulation, and can be divided into the following four stages: damage onset; damage growth; local fracture; structural fracture. Major features of bearing failure include fiber micro-buckling, matrix cracking, delamination and out-of-plane shear cracking. Bearing strength and failure mode should also depend on the lateral constraints and the "toughness" of different polymer-matrix based laminates. © 2005 Elsevier Ltd. All rights reserved.
引用
收藏
页码:1022 / 1031
页数:10
相关论文
共 16 条
[1]  
AOKI T, 2000, P 41 AIAA ASME ASCI
[2]  
*ASTM, 1995, 95395 ASTM D
[3]   Failure mechanisms in bolted CFRP [J].
Camanho, PP ;
Bowron, S ;
Matthews, FL .
JOURNAL OF REINFORCED PLASTICS AND COMPOSITES, 1998, 17 (03) :205-233
[4]  
Crews JHJ, 1981, ASTM STP, P131
[5]  
ERIKSSON I, 1990, J COMPOS MATER, V24, P1264
[6]  
Hart-Smith L.J., 1976, CR144899 NASA
[7]  
ISHIKAWA T, 1997, P 5 JAP INT SAMPE S, P1137
[8]  
*JIS, 1991, 7080 JIS K
[9]  
MATTHES FL, 1986, JOINING FIBERREINFOR
[10]  
*N ATL TREAT ORG, 1998, AGARD C P CP590