Special constructed and optimised eddy-current sensors for measuring force and strain in steel reinforced concrete
| Autor: | Ji-Gou Liu, H.C. Schoenekess, Werner Ricken, W.-J. Becker |
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| Rok vydání: | 2003 |
| Předmět: |
Materials science
Eddy-current sensor business.industry Stress–strain curve Metals and Alloys Structural engineering Condensed Matter Physics Reinforced concrete Surfaces Coatings and Films Electronic Optical and Magnetic Materials law.invention Stress (mechanics) law Electromagnetic coil Eddy current Electrical and Electronic Engineering Air gap (plumbing) business Instrumentation Electrical impedance |
| Zdroj: | Sensors and Actuators A: Physical. 106:159-163 |
| ISSN: | 0924-4247 |
| DOI: | 10.1016/s0924-4247(03)00156-0 |
| Popis: | As a possible use for the monitoring of bridge-constructions optimised eddy-current sensors can be applied to recognise damages earlier and to reduce costs consequently. The intention is to measure the coil impedance of an eddy-current sensor positioned close to a pre-stressing cable and to conclude the change of stress in steel of reinforced concrete elements. For this purpose, measurements are taken with specified specimen to investigate the influence from the air gap variation and hysteresis curve. To estimate the force and stress, respectively, from the impedance of eddy-current sensors, a converting rule between electrical and mechanical values is needed. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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