Results 251 to 260 of about 1,886,804 (303)
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Damage Identification of Nonlinear Structural Systems
AIAA Journal, 2000The present investigation develops methods for the identie cation of highly localized structural damages in nonlinear structures. The damage is dee ned as either a reduction of stiffness or a change of restoring force characteristics from linear (undamaged state ) to weak nonlinear (damaged state ). One method for identifying both the location and type
Lai-Ah Wong, Jay-Chung Chen
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Thermoelasticity-based modal damage identification
International Journal of Fatigue, 2020Abstract The response of linear dynamic structures can be decomposed into modal components, where each natural frequency is also represented by a corresponding mode shape and damping ratio. While vibration-fatigue-damage identification was recently expanded using modal decomposition, this research proposes a modal-decomposition-based thermoelastic ...
Capponi L. +3 more
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MuDI: A Multilevel Damage Identification Platform
Civil-Comp Proceedings, 2014This paper present the ideas and methods that are behind the development of a multilevel damage identification platform (MuDI). The need to develop the platform is a consequence of the collaboration of some of the authors with the Italian Department of Civil Protection, that has a large project named Seismic Observatory of Structures, in which more ...
Acunzo G. +3 more
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Structural damage identification - A probabilistic approach
AIAA Journal, 1998A method is presented to improve the robustness of current damage detection methodologies. Measured statistical changes in natural frequencies and mode shapes along with a correlated analytical stochastic finite element model are used to assess the integrity of a structure.
Loukas Papadopoulos, Ephrahim Garcia
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Dynamic Characterization and Damage Identification
2011This chapter presents selected cases of modal parameter evaluation and damage identification, privileging the applied aspects. The identification of modal parameters is discussed through three experimental cases of masonry structures: a civil building, a monumental structure and a nineteenth century railway bridge.
VESTRONI, Fabrizio, PAU, Annamaria
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Structural identification, damage identification and structural health monitoring
SPIE Proceedings, 2007There are numerous Structural identification (StrId) methods and techniques. The purpose of StrId in the civil infrastructure arena include: a) design validation of new structures, b) condition assessment of existing structures, c) analytical model updating of existing and new structures, and d) damage identification (DmId) of existing structures ...
Sreenivas Alampalli, Mohammed Ettouney
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Automated in-service damage identification
CIRP Annals, 2014Abstract Service damage for mechanical components includes surface delamination, impact damage, crack, wear and corrosion. Automated service damage identification for better analysis of a component remaining life in order to reduce the service cost is increasingly necessary for industrial product-service systems, e.g. power-by-hour contracts.
Jörn Mehnen +2 more
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Damage Identification Using Lamb Waves
Key Engineering Materials, 2010The concept of damage detection using sensors in composite panels is of growing interest, due to the reduction in maintenance activity and increasing of the aircraft safety. Piezoelectric materials have been widely used to build a variety of transducers for activating and receiving Lamb waves which are used for delamination/damage detection. The aim of
Z. Sharif-Khodaei, Ferri M.H.Aliabadi
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Damage identification using chaotic excitation
Smart Structures and Systems, 2013Vibration-based damage detection methods are popular for structural health monitoring. However, they can only detect fairly large damages. Usually impact pulse, ambient vibrations and sine-wave forces are applied as the excitations. In this paper, we propose the method to use the chaotic excitation to vibrate structures.
Chunfeng Wan +3 more
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Damage Identification in 1D Structures
47th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference<BR> 14th AIAA/ASME/AHS Adaptive Structures Conference<BR> 7th, 2006The paper summarizes experimental and numerical analysis directed towards identification of damages in one-dimensional constructional elements. The presented method of structural damage identification makes use of high frequency signals, which are sensitive to small discontinuities in structures. The experimental set is presented.
Magdalena Palacz +3 more
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