期刊
MATERIALS
卷 13, 期 2, 页码 -出版社
MDPI
DOI: 10.3390/ma13020435
关键词
acoustic emission; wood; poplar; composites; FRP
类别
资金
- COMPOP_Timber project Desarrollo de productos de ingenieria elaborados a base de tablones y chapas de chopo con inserciones de material compuesto para su uso en construccion [BIA2017-82650-R]
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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