Results 1 to 10 of about 288,967 (302)
Vehicle Bump Testing Parameters Influencing Modal Identification of Long-Span Segmental Prestressed Concrete Bridges [PDF]
Sensors, 2022 In-service prestressed concrete box girder bridges have received increasing attention in recent years due to a large number of bridges reaching decades in service.
Wilson Hernandez +2 more
doaj +2 more sources
Modal Indicators for Operational Modal Identification [PDF]
, 2001 Modal validation is of paramount importance for all two-stage time domain modal identification algorithms. However, due to a higher noise/signal ratio in operationaUambient modal analysis, being able to determine the right model order and to distinguish ...
Andersen, P., Brincker, Rune, Zhang, L.
core +5 more sources
An Energy Approach to the Modal Identification of a Variable Thickness Quartz Crystal Plate [PDF]
SensorsThe primary objective of modal identification for variable thickness quartz plates is to ascertain their dominant operating mode, which is essential for examining the vibration of beveled quartz resonators.
Zhe Wang +4 more
doaj +2 more sources
Hybrid Time–Frequency Analysis for Micromobility-Based Indirect Bridge Health Monitoring [PDF]
SensorsBridges serve as vital connectors in the transportation network and infrastructure. Given their significance, it is crucial to continuously monitor bridge conditions to ensure the efficient operation of transportation systems.
Premjeet Singh +2 more
doaj +2 more sources
High-Speed Railway, 2023 Modal and damage identification based on ambient excitation can greatly improve the efficiency of high-speed railway bridge vibration detection. This paper first describes the basic principles of stochastic subspace identification, peak-picking, and ...
Jiahuan Li +3 more
doaj +1 more source
Modality effects in word identification [PDF]
Memory & Cognition, 1974 An experiment was designed to investigate the locus of persistence of information about presentation modality for verbal stimuli. Twenty-four Ss were presented with a continuous series of 672 letter sequences for word/nonword categorization. The sequences were divided equally between words and nonwords, and each item was presented twice in the series ...
K, Kirsner, M C, Smith
openaire +2 more sources
Performance Evaluation of Blind Modal Identification in Large-Scale Civil Infrastructure
Infrastructures, 2022 The monitoring and maintenance of existing civil infrastructure has recently received worldwide attention. Several structural health monitoring methods have been developed, including time-, frequency-, and time–frequency domain methods of modal ...
Ali Abasi, Ayan Sadhu
doaj +1 more source
IEEE Access, 2021 Various modal identification methods for interarea modes have been developed to improve identification accuracy by overcoming the measurement noise in ambient data of phasor measurement units (PMUs).
Jin Kwon Hwang, Jeonghoon Shin
doaj +1 more source
Advances in Civil Engineering, 2021 Modal parameters are important parameters for the dynamic response analysis of structures. An output-only modal parameter identification technique based on Hilbert Vibration Decomposition (HVD) is developed herein for structural modal parameter ...
Yingzhi Xia +3 more
doaj +1 more source
Wooden Beams Modal Damage Identification Parameters Based on Strain
Buildings, 2023 This study completely investigates the damage detection problem based on strain modal characteristics using simply supported wooden beams as the research object. First, modal analysis was performed, and finite element models of both damaged and undamaged
Yu Cao +6 more
doaj +1 more source