Structural health monitoring (SHM) techniques have been studied for several years. An effective approach for SHM is to choose the parameters that are sensitive to the damage occurring in the structure but not sensitive to operational or environmental damages. This paper deals with a comparative study among the different vibration-based damage detection methods: fundamental modal examination, local diagnostic method, non-probabilistic methodology and the time series method. All these strategies contemplate different parameters of a structure to recognize damage. Out of the study made, time series analysis proves to more successfully in damage identification than the rest of the methods.

Vibration-based damage detection techniques used for health monitoring of structures: a review

Research and practice on progressive collapse and robustness of building structures in the 21st century

Performance-based seismic design of self-centering steel frames with SMA-based braces

Review on the new development of vibration-based damage identification for civil engineering structures: 2010-2019

Influence of the concrete DIF model on the numerical predictions of RC wall responses to blast loadings

Experimental and numerical investigations on seismic performance of RC bridge piers considering buckling and low-cycle fatigue of high-strength steel bars

Damage evaluation of the steel tubular column subjected to explosion and post-explosion fire condition

A 3D flexure–shear fiber element for modeling the seismic behavior of reinforced concrete columns

This paper proposes a new MR damper with bidirectional adjusting damping forces to enhance the fail-safe property of the MR damper. The structure of the composite magnetic circuits is improved for the new damper. Four prototype dampers are fabricated and tested by magnetic field tests and dynamic tests. The magnetic field distribution in the damping path and the dynamic properties of the dampers with different input currents are obtained. The Gompertz model is proposed to portray the dynamic behavior of the prototype dampers. The study shows that, due to the improved structure of composite magnetic circuits, the prototype dampers can maintain a medium damping force with zero current input. This behavior may ensure a better fail-safe property and avoid settlement of MR fluid compared with conventional MR dampers. Furthermore, the minimum and maximum output powers of the proposed dampers can be obtained at the states of the negative peak and positive peak of currents inputs, respectively. In addition, the dynamic range of controllable force is wider than that of conventional MR dampers. The analysis further shows that the proposed Gompertz model can precisely portray the nonlinear hysteretic behavior of the proposed dampers without complicated function forms.

http://iopscience.iop.org/article/10.1088/0964-1726/22/11/115003/pdf

Zhong-Xian Li

Papers

Experimental and numerical investigations on seismic performance of RC bridge piers considering buckling and low-cycle fatigue of high-strength steel bars

Damage evaluation of the steel tubular column subjected to explosion and post-explosion fire condition

A 3D flexure–shear fiber element for modeling the seismic behavior of reinforced concrete columns

A new magnetorheological damper for seismic control

Experimental studies on nonlinear seismic control of a steel-concrete hybrid structure using MR dampers