Back to Search
Start Over
A Strain-Based Load Identification Model for Beams in Building Structures
- Source :
- Sensors; Volume 13; Issue 8; Pages: 9909-9920, Sensors, Vol 13, Iss 8, Pp 9909-9920 (2013), Sensors (Basel, Switzerland), SENSORS(13): 8
- Publication Year :
- 2013
- Publisher :
- MDPI AG, 2013.
-
Abstract
- A strain-based load identification model for beam structures subjected to multiple loads is presented. The number of sensors for the load identification model is the same as the number of load conditions acting on a beam structure. In the model, the contribution of each load to the strains measured by strain sensors is defined. In this paper, the longitudinal strains measured from multiplexed fiber Bragg grating (FBG) strain sensors are used in the load identification. To avoid the dependency on the selection of locations for FBG sensors installed on a beam structure, the measured strain is expressed by a general form of a strain sensing model defined by superimposing the distribution shapes for strains from multiple loads. Numerical simulation is conducted to verify the model. Then, the load identification model is applied to monitoring of applied loads on a 4 m-long steel beam subjected to two concentrated loads. In the experiment, seven FBG sensors and nine electrical strain gages (ESGs) were installed on the surface of the bottom flange. The experimental results indicate a good agreement between estimated loadings from the model and the loads applied by a hydraulic jack.
- Subjects :
- Engineering
strain sensing
load identification
structural health monitoring
steelbeams
Compressive Strength
steel beams
Flange
lcsh:Chemical technology
Biochemistry
Load cell
Article
Analytical Chemistry
Fiber Bragg grating
Tensile Strength
Transducers, Pressure
Computer Simulation
lcsh:TP1-1185
Electrical and Electronic Engineering
Instrumentation
Strain gauge
Strain (chemistry)
Computer simulation
Construction Materials
business.industry
Equipment Design
Structural engineering
Models, Theoretical
Atomic and Molecular Physics, and Optics
Equipment Failure Analysis
Computer-Aided Design
Stress, Mechanical
Structural health monitoring
business
Beam (structure)
Subjects
Details
- ISSN :
- 14248220
- Volume :
- 13
- Database :
- OpenAIRE
- Journal :
- Sensors
- Accession number :
- edsair.doi.dedup.....ed95d7a75bafe572ea47c285369ddd05