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Protocols and Criteria for Acoustic Emission Monitoring of Fracture-Critical Steel Bridges.
| 题名： | Protocols and Criteria for Acoustic Emission Monitoring of Fracture-Critical Steel Bridges. |
| 作者： | Tillmann, A. S.; Schultz, A. E.; Campos, J. E. |
| 关键词： | Steel bridges, Bridge safety, Acoustic emission, Bridge infrastructure, Bridge girders, Monitoring, Data collection, Minnesota, Fatigue tests, Fracture properties, Acoustic emissions monitoring systems |
| 摘要： | With bridge infrastructure in Minnesota aging, advancing techniques for ensuring bridge safety is a fundamental goal of the Minnesota Department of Transportation (MnDOT). Developing health monitoring systems for fracture-critical bridges is an essential objective in meeting the stated goal. This report documents the implementation of two, 16-sensor, acoustic emission monitoring systems in one of the tie girders of the Cedar Avenue Bridge, which is a fracture-critical tied arch bridge spanning the Minnesota River between Bloomington and Eagan, MN. The goal of the project is to develop a process for using acoustic emission technology to monitor one of the girders of the bridge while continuously collecting data from the monitoring systems. Given the cost of acoustic emission sensing equipment, an approach was adopted to space the sensors as widely as possible. Fracture tests were conducted on a specimen acoustically connected to the bridge to simulate fracture in a bridge member. Sets of criteria were developed to differentiate between acoustic emission data collected during fracture and ambient bridge (i.e. AE noise) data. The sets of criteria were applied to fracture test data and AE noise data to determine the validity of the criteria. For each criteria set, a period of Cedar Avenue Bridge monitoring data was analyzed. |
| 总页数： | Tillmann, A. S.; Schultz, A. E.; Campos, J. E. |
| 报告类型： | 科技报告 |
相关文献
- Acoustic Emission Monitoring of Fracture-Critical Steel Bridges.
- Fracture-Critical System Analysis for Steel Bridges. National Cooperative Highway Research Program (NCHRP) 883.
- Emerging technologies for Nondestructive Evaluation of bridges and highways
- Review of Steel Bridges with Fracture-Critical Elements.
- Design and Field Monitoring of Horizontally Curved Steel Plate Girder Bridge.
- Proposed Guideline for Reliability-Based Bridge Inspection Practices. National Cooperative Highway Research Program (NCHRP) Report 782.
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