Introduction

Structural health monitoringStructural health monitoring (SHM), as defined in Lynch and Loh (The shock and vibration digest (2006), [1]), is a “paradigm” of rapidly identifying structural damage in an instrumented structural system and can be classified in terms of their scale–local or global damage detection methods. Whereas global methods employ numerical models that intake global characteristics of a structure (such as modal frequencies) that are indicative of possible damage, local methods attempt to detect damage by screening structural systems at the individual element scale.