A precise non-destructive damage identification technique of long and slender structures based on modal data
نویسندگان
چکیده
منابع مشابه
Modal-Based Non-Destructive Damage Assessment in Composite Structures Using Wavelet Analysis: A Review
The paper presents an overview and a history of development of non-destructive modal-based methods together with advanced signal processing techniques based on wavelet transform applied to the composite fiber-reinforced materials. The wavelet analysis applied for the structural damage assessment gains the popularity due to the high sensitivity to any non-continuities and singularit ies in the m...
متن کاملAn effective approach for damage identification in beam-like structures based on modal flexibility curvature and particle swarm optimization
In this paper, a computationally simple approach for damage localization and quantification in beam-like structures is proposed. This method is based on using modal flexibility curvature (MFC) and particle swarm optimization (PSO) algorithm. Analytical studies in the literature have shown that changes in the modal flexibility curvature can be considered as a sensitive and suitable criterion for...
متن کاملDamage identification of structures using experimental modal analysis and continuous wavelet transform
Abstract: Modal analysis is a powerful technique for understanding the behavior and performance of structures. Modal analysis can be conducted via artificial excitation, e.g. shaker or instrument hammer excitation. Input force and output responses are measured. That is normally referred to as experimental modal analysis (EMA). EMA consists of three steps: data acquisition, system identificatio...
متن کاملdamage detection in skeletal structures based on charged system search optimization using incomplete modal data
it is well known that damaged structural members may alter the behaviour of the structures considerably. careful observation of these changes has often been viewed as a means to identify and assess the location and severity of damages in structures. among the responses of a structure, natural frequencies and natural modes are both relatively easy to obtain and independent from external excitati...
متن کاملStructural Damage Identification of Plate Structures based on Frequency Response Function and Natural Frequencies
In this paper, a structural damage identification method (SDIM) is developed for plate-like structures. This method is derived using dynamic equation of undamaged/damaged plate, in which local change in flexural rigidity is characterized utilizing a damage distribution function. The SDIM requires to modal data in the intact state and frequency response of damage state where most of vibration ba...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Sound and Vibration
سال: 2016
ISSN: 0022-460X
DOI: 10.1016/j.jsv.2015.12.013