西南林业大学学报2024，Vol.44Issue(7)：174-185,12.DOI:10.11929/j.swfu.202305028
基于AE和DIC监测的不同裂纹木构件损伤规律研究
Study on Monitoring the Damage Law of Wood Components with Different Cracks Based on AE and DIC
摘要
Abstract
This article tracks the damage process of T-shaped and L-shaped Picea asperata components us-ing acoustic emission technology and a digital image system.It studied the initiation and propagation changes of cracks in wooden components during the loading process by the parameter method of acoustic emission.It ana-lyzed the surface stress-strain information of cracks in wooden components by digital image.The results indic-ated that the parameter data and the strain information consistently reflected the crack damage law of wooden components by acoustic emission and digital image system analysis.It had good predictive ability for initiating cracks in wooden components by the amplitude,energy,and ringing count of acoustic emission.The strain field information of digital image method can monitor the evolution and changes of cracks in wooden components.It can provide methodological guidance for further research on the damage evaluation mechanism of wood compon-ents with different crack forms by establishing a prediction and evaluation system for the crack damage law of wood components using acoustic emission parameters and digital image systems.关键词
木构件/裂纹/声发射/数字图像/表面应变/损伤规律Key words
wooden component/crack/acoustic emission/digital image/surface strain/damage pattern分类
农业科技引用本文复制引用
李猛,潘喜利,刘翔,佘艳华..基于AE和DIC监测的不同裂纹木构件损伤规律研究[J].西南林业大学学报,2024,44(7):174-185,12.基金项目
湖北省自然科学基金青年项目(2022CFB856)资助 （2022CFB856）
襄阳市科技局项目(2022ABH006322)资助. （2022ABH006322）
