Structural damage identification approaches relying on structural vibration shapes (VSs) have been widely developed. Among the approaches, pseudo-force approach has attracted increasing attention during recent decade owing to fact that damage-induced is concentrated within region only and rapidly attenuates at undamaged locations. Transverse pseudo-forces (TPFs) flexural VSs used for identifica...

Over the past decades, numerous damage diagnosis techniques based on modal flexibility have been studied and developed for various types of structures, but rarely structures made functionally graded (FG) materials. This paper aims to present extensive applicability a sensitivity-based index termed as MFBDI identification FG beams. The formulation this is closed-form sensitivity derived from dir...

Presenting structural damage detection problem as an inverse model-updating approach is one of the well-known methods which can reach to informative features of damages. This paper proposes a model-based method for fault prognosis in engineering structures. A new damage-sensitive cost function is suggested by employing the main concepts of the Modal Assurance Criterion (MAC) on the first severa...

One of the difficulties of the vibration-based damage identification methods is the nonuniqueness of the results of damage identification. The different damage locations and severity may cause the identical response signal, which is even more severe for detection of the multiple damage. This paper proposes a new strategy for damage detection to avoid this nonuniqueness. This strategy firstly de...

Damage identification under real operating conditions of the structure during its daily use would be suitable and attractive to civil engineers due to the difficulty and problems of carrying out controlled forced excitation tests on this kind of structures. In this case, output-only response measurements would be available, and an output-only damage identification procedure should be implemente...