原文传递
Development of a Commercial-Grade Bi-Axial Strain Transducer. High Speed Rail IDEA Project 28. Final rept. Jun 01-Oct 04.
| 题名： | Development of a Commercial-Grade Bi-Axial Strain Transducer. High Speed Rail IDEA Project 28. Final rept. Jun 01-Oct 04. |
| 作者： | lee, h. |
| 关键词： | *Fatigue-analysis; *Strain-transducers; *Rails-.;Strain-gauge. |
| 摘要： | One of the most difficult parts of fatigue life estimation is obtaining accurate strain history data. Smart sensors and micro-electromechanical systems (MEMS) offer the potential of accurately monitoring the structural capacity of the rail infrastructure. The primary goal of this research was to develop a prototype MEMS-based intelligent Bi-Axial Strain Transducer (BiAST) and to assess its potential for monitoring and predicting the fatigue life of rail. The BiAST simultaneously measures strains in two perpendicular directions. Preliminary field testing of the BiASTs was conducted at the Transportation Technology Center, Inc. (TTCI) in Pueblo, Colorado to evaluate their performance and ruggedness. These field tests identified several problems that must be resolved before this technology can be successfully implemented. It was very difficult to install the BiAST sensors on the rail in the field. After installation, three of the five sensors did not work at all, and the other two performed inconsistently. The current BiAST system lacked repeatability and accuracy. Attempts to incorporate a fatigue analysis module in the sensor system were unsuccessful. Any further development of this technology for such rail applications will require investigation of the causes of, and solutions to, the problems identified in this project. |
| 报告类型： | 科技报告 |
相关文献
- Development of a Commercial-Grade Bi-Axial Strain Transducer. High Speed Rail IDEA Project 28.
- Field Investigation Report for Abutment Backfill Characterization.
- High-Strength, Lightweight Car Bodies for High-Speed Rail Vehicles. High Speed Rail IDEA Project 32. Final rept. Jun 01-Jan 04.
- Advanced Public Transportation Systems Deployment in the United States. Year 2004 Update.
- North Carolina 'Sealed Corridor' Phase IV Assessment: Private Crossings.
- Ground Penetrating Radar for Railroad Track Substructure Evaluation.
检索历史
应用推荐
