Automated strain-based operational modal analysis of a steel railway bridge: influence of temperature vs. influence of retrofittingStrain-based vibration monitoring is a promising alternative to the more conven
The fundamental structures changes can be estimated based on structure parameter changes, like resonance frequencies, mode shapes and modal damping. The structures’ parameters are affected by the varying operational and environmental conditions [4]. In SHM systems, two types of sensors are utilized ...
Operational modal analysis is a vibration testing technique to obtain the modal parameters under low amplitude operational excitation forces. This study investigates and evaluates the efficacy of piezo sensor for structural health monitoring with operational strain modal analysis. A scaled-down bridge ...
Operational strain modal analysisFBG sensingClamps are widely used to fix and support the pipe in engineering community. Clamps looseness may further lead to the fatigue damage of the pipe, therefore the early detection of clamps looseness is very crucial. The robustness and the accuracy of damages...
Operational strain modal analysisFBG sensingClamps are widely used to fix and support the pipe in engineering community. Clamps looseness may further lead to the fatigue damage of the pipe, therefore the early detection of clamps looseness is very crucial. The robustness and the accuracy of damages...
It is demonstrated that the proposed SPSDT-based method is capable of identifying the operational strain modal parameters of a structure where only the dynamic strain time鈥揾istory responses are measured. The proposed SPSDT-based method does not need white noise assumption under a single load ...
New approach based on operational strain modal analysis to identify dynamical properties of the high-speed reciprocating operation mechanism:doi:10.1177/1461348418821203Xuchu JiangBin LiXinyong MaoYili PengSongping HeSAGE PublicationsSage UK: London, England...
modal strain energystructural health monitoringoperational modal analysisdamage detectionstatistical methodA statistic structural damage detection algorithm is presented based on the closed-form of element modal strain energy. Element damage equations are established where the damage and modal scaling factor ...
operational conditions on the extraction of structural modal parameters.In this paper,the deformation of the structure was determined by the concept of influence line using the Betti-Maxwell theory.Then two damage detection indicators were developed based on strain energy variations.These indices were ...
This method combines the strain mode with the operational modal analysis method, both of which are verified under the static and operational states, respectively. First, the theoretical background of the identification method is derived. Next, the proposed approach is used to identify the ...