Combined Acoustic and Modal Structural Health Monitoring and Structural Assessment

Abstract

The paper presents the first results of a recently completed R+D project KamoS - the acronym stands for Combined Acoustic and Modal Structural Health Monitoring and Structural Assessment. The scope of the project was to understand how combined approaches based on guided ultrasonic waves, acoustic emission and vibration measurement can be used for the monitoring of aircraft structures under changing operational conditions. The main idea is to combine the advantages of local and global Structural Health Monitoring (SHM) approaches. For the experimental validation of the first developed algorithms an extended measurement campaign was carried out on a realistic aircraft door environment. The laboratory tests combined active and passive measurement principles based on ultrasound and vibration to ensure robust and reliable damage detection and localization. In this paper only the experimental setup of the aircraft structure and some results based on vibration monitoring are presented. The obtained measurement data sets serve for the development of further damage identification algorithms.