

Detecting the Debonding of Adhesively Mounted Sensors in an Optimally Designed Structural Health Monitoring System
Abstract
The ability to distinguish a debonding sensor from structural damage is a challenging issue in structural health monitoring. This study presents a method for detecting a debonding sensor when considering a group of sensors comprising an optimally designed structural health monitoring system. Experimental data is obtained by bonding accelerometers to an aluminum fitting that is repeatedly cycled though temperatures ranging from -60 to 150 °F to cause adhesion failure. The effects of damage are examined in a separate experiment. The data is used to develop several metrics for identifying a debonding sensor on a damaged structure.