Damage Monitoring of Single Lap Bonded Composite Using Acoustic Emission Technique

2nd International Conference on Advancements in Aeromechanical Materials for Manufacturing

航空航天工程;材料科学;机械制造

Mishra, N.K.^1 ; Dash, P.K.^1 ; Yashwanth, Nandyala^1

Department of Aeronautical Engineering, MLR Institute of Technology, Hyderabad, India^1

关键词: Acoustic emission techniques;    Adhesive lap joints;    Adhesively bonded joints;    Aerospace field;    Bonded composites;    Damage monitoring;    Lap joint;    Monitoring methods;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/455/1/012026/pdf
DOI  :  10.1088/1757-899X/455/1/012026

来源: IOP

【 摘 要 】

Adhesively bonded joints are currently of interest to the aerospace field due to the heavy reliance on bonded composite structures in new aircraft designs. In response, tools for joints analysis have been developed and examined. In this paper, the type of failure involved in single adhesive lap joints of composite has been experimentally investigated. An acoustic emission technique (AET) was used to monitor the pre and post aspects of damage growth in adhesive composite joint in terms of strain energy released rate and sound amplitude dissipated. Criticality of prior to failure was well assessed through acoustic waves monitoring method.