Acoustic Emission and Numerical Analysis of Pine Beams Retrofitted with FRP and Poplar Wood

被引：12
作者：
Rescalvo, Francisco J. [1 ]
Rodriguez, Maria [2 ]
Bravo, Rafael [2 ]
Abarkane, Chihab [1 ]
Gallego, Antolino [1 ]
机构：
[1] Univ Granada, Bldg Engn Sch, Campus Fuentenueva S-N, E-18071 Granada, Spain
[2] Univ Granada, Dept Struct Mech, Campus Fuentenueva S-N, E-18071 Granada, Spain
来源：
MATERIALS | 2020年 / 13卷 / 02期
关键词：
acoustic emission; wood; poplar; composites; FRP; TIMBER BEAMS; CARBON-FIBER; LOAD-CAPACITY; SOLID WOOD; REINFORCEMENT; COMPOSITES;
D O I：
10.3390/ma13020435
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Acoustic emission (AE) released by pine beams retrofitted with fiber reinforced plastic (FRP) and poplar planks in bending is analyzed. Basalt fabric (FB), carbon fabric (FC), and carbon pultruded laminate (LC) have been used as FRP. Experimental results and AE behavior are discussed based on an elastoplastic finite-element numerical model. The model demonstrates a strong strain concentration at the end of poplar planks, which causes high AE activity in these areas and acts as a precursor of the delamination of the poplar plank. Based on the experimental results, some AE criteria for predicting the onset of the delamination are tentatively proposed.
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页数：12
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