damage detection in continues bridge deck and asce bechmark via instantaneous energy method

One of the main concerns for structures and infrastructures is their inspection via the structural health monitoring (shm) approaches to ensure their functionality and/or performance. structures are exposed to natural hazards and manmade accidents in their lifetime, which may cause serious damages. in order to detect theses defects shm is an efficient tool to ensure structural safety and protection (pierdicca, 2016). one of the major challenges of currentengineering knowledge is to obtain low-cost shm especially after the occurrence of an accident (xu & xia, 2011). shm aims to detect real characteristics of a system and detecting its possible damage. this may be due to changes in geometric characteristics, material modifications, or reductions in cross-sections and so on. among various shm approaches, healthmonitoring of infrastructures (ishm), especially bridges has been presented more challenges for engineers. in modern societies, ishm as an efficient tool can play a significant role in the maintenance and safety of bridges. its main purpose is to be a part of the structural maintenance schedule to evaluate their real performance against unexpected environmentaldisasters (wong, 2004; abe & fujino, 2009).