Repairing wood beams under bending using carbon-epoxy composites

被引：29
作者：
Dourado, N. [1 ]
Pereira, F. A. M. [1 ]
de Moura, M. F. S. F. [2 ]
Morais, J. J. L. [1 ]
机构：
[1] CITAB UTAD, Dept Engn, P-5001801 Quinta De Prados, Vila Real, Portugal
[2] Univ Porto, Fac Engn, Dept Engn Mecan, P-4200465 Oporto, Portugal
来源：
ENGINEERING STRUCTURES | 2012年 / 34卷
关键词：
Wood; Composite; Repair; Bending; Cohesive modeling; DATA REDUCTION SCHEME; FRACTURE; REINFORCEMENT; DURABILITY; TESTS; FRP;
D O I：
10.1016/j.engstruct.2011.09.001
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
Repair of wood damaged beams under bending using carbon-epoxy composites has been studied in this work. The influence of patch thickness and adhesive filleting was analyzed experimentally and numerically. The main goal was to assess the effect of these parameters on the ultimate load and failure type. Numerical analyses considering a mixed-mode cohesive damage model were performed in order to better understand the physical phenomena which explain the observed behavior. The main conclusion is that repairing leads to a remarkable gain on the bearing capacity of the damaged beam. Additionally, it was observed that a slight increase on the ultimate load can be obtained by diminishing the patch thickness. However, adhesive filleting did not induce a clear increase on the load bearing capacity, which was explained by the failure mode observed in this case. (C) 2011 Elsevier Ltd. All rights reserved.
引用
收藏
页码：342 / 350
页数：9
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