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Recursive Combined Subspace Identification Technique for Tracking Dynamic Characteristics of Structures under Earthquake Excitation
Publisher: American Society of Civil Engineers
Abstract: Subspace identification techniques are a popular parametric time-domain method for extracting modal parameters of a structure under ambient condition. These techniques can simultaneously process a large quantity of data ...
Structural Damage Assessment Based on Wavelet Packet Transform
Publisher: American Society of Civil Engineers
Abstract: Wavelet transform (WT) is a mathematical tool that can decompose a temporal signal into a summation of time-domain basis functions of various frequency resolutions. This simultaneous time-frequency decomposition gives the ...
Statistical Wavelet-Based Method for Structural Health Monitoring
Publisher: American Society of Civil Engineers
Abstract: A statistical pattern classification method based on wavelet packet transform (WPT) is developed in this study for structural health monitoring. The core of this method is the WPT that has the ability of extracting minute ...
Vulnerability Assessment of Cable-Stayed Bridges in Probabilistic Domain
Publisher: American Society of Civil Engineers
Abstract: Vulnerability of a structure under terrorist attack can be regarded as the study of its behavior against blast-induced loads. A structure is vulnerable if a small damage can trigger a disproportionately large consequence ...
Tracking Dynamic Characteristics of Structures Using Output-Only Recursive Combined Subspace Identification Technique
Publisher: ASCE
Abstract: Identifying the dynamic characteristics of structures under ambient conditions is very important for heath monitoring and damage assessment. In this study, an output-only recursive combined subspace identification technique ...
Shear-Mode Rotary Magnetorheological Damper for Small-Scale Structural Control Experiments
Publisher: American Society of Civil Engineers
Abstract: In an attempt to validate the effectiveness of a magnetorheological (MR) damper in controlling the wind-induced response of a building model in a wind tunnel, it is necessary to have a damper which produces a range of small ...
Substructural Time-Varying Parameter Identification Using Wavelet Multiresolution Approximation
Publisher: American Society of Civil Engineers
Abstract: Identifying properties of civil engineering structures is an important task for their condition assessment, damage diagnosis, maintenance and repair, and life-cycle management. These structures usually contain a large ...
Tracking of Structural Dynamic Characteristics Using Recursive Stochastic Subspace Identification and Instrumental Variable Technique
Publisher: American Society of Civil Engineers
Abstract: Identifying dynamic characteristics for structures under ambient condition is a very important task for the design verification, model updating, health monitoring, and damage detection of these structures. Among many ...
Optimum Nonlinear Control for Step and Pulse Disturbances
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper treats the responses of a controlled system to step and pulse disturbances where the rate of change of the controlling variable is bounded. Optimum transients in the sense of ...
Elastic Instability of Rectangular Sandwich Panel of Orthotropic Core With Different Face Thicknesses and Materials
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper treats the instability of rectangular sandwich panels with nonisotropic cores and faces of different materials or thicknesses. The simply supported panel is loaded with a uniform edge ...