Acoustic Emission Technique (AET) for Failure Analysis in wood materials
Understanding failure mechanisms of construction materials as well as their damage evolution are two key factors to improve design tools of structures.Depending on failure modes to be highlighted,and studied,several tests methods,and analysis tools have been developed,in particular AET.This latter is an experimental tool well suited for characterizing material behavior by monitoring fracture process.Despite the wide use of AET to characterize and monitor damage evolution of composite materials,few research studies focused on using AET to characterize the mechanical behavior of wood materials.In this work,the failure process in wood material under monotonic loading is studied by confronting three experimental methods; by analyzing stress-strain curves,AE measurements,and digital image acquisition.First,results show good correlation and complementarity between the used methods.Second,simple approach in analysis of AE signals (cumulative event and energy) gives important information about crack initiation and growth without the material.Moreover,advanced analysis of AE data (determination of source locations and the study of mechanism of individual events; study of amplitude distributions; investigation of frequency characteristics of emission events) will allows us to understand some key damage mechanisms such as the fracture process zone.
Acoustic Emission Cracking Wood Fracture Energy
Frédéric LAMY Mokhfi TAKARLI Frédéric DUBOIS Nicolas ANGELLIER Ion-Octavian POP
Groupe dEtude des Matériaux Hétérogènes,Université de Limoges,Egletons 19300,Country,France
国际会议
北京
英文
1-9
2013-06-16（万方平台首次上网日期，不代表论文的发表时间）