Conference proceeding
Acoustic emission monitoring of strengthened steel bridges: Inferring the mechanical behavior of post-installed shear connectors
NONDESTRUCTIVE CHARACTERIZATION AND MONITORING OF ADVANCED MATERIALS, AEROSPACE, CIVIL INFRASTRUCTURE, AND TRANSPORTATION XIII, v 10971, pp 109710H-109710H-10
01 Jan 2019
Abstract
This study proposes an acoustic emission (AE) monitoring approach for old steel bridges strengthened with post-installed shear connectors. In this strengthening method, cyclic traffic loads gradually fatigue the connectors and increase the bridge deflection at which the connectors engage in shear transfer. The key parameter that this study aims to estimate is how much the connectors need to slide before they engage in shear transfer. To estimate this parameter, this paper leverages the difference in AEs from shear connectors before and after they engage in shear transfer. Specifically, the b-value of AEs a k-mean clustering approach are used. To validate this novel approach, a full-scale, two-span steel girder with a concrete deck was used. The girder was strengthened with post-installed shear connectors and subjected to 20 cycles of sequential loads representing moving trucks. The results confirmed the effectiveness of the approach based on AE during the unloading of the girder.
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Details
- Title
- Acoustic emission monitoring of strengthened steel bridges: Inferring the mechanical behavior of post-installed shear connectors
- Creators
- Arvin Ebrahimkhanlou - University of TehranSalvatore Salamone - The University of Texas at AustinArash Ebrahimkhanlou - University of TehranAmir Reza Ghiami Azad - University of TehranKerry Kreitman - Pivot BioTodd Helwig - The University of Texas at AustinEric Williamson - The University of Texas at AustinMichael Engelhardt - The University of Texas at Austin
- Contributors
- A L Gyekenyesi (Editor)T Y Yu (Editor)H F Wu (Editor)P J Shull (Editor)
- Publication Details
- NONDESTRUCTIVE CHARACTERIZATION AND MONITORING OF ADVANCED MATERIALS, AEROSPACE, CIVIL INFRASTRUCTURE, AND TRANSPORTATION XIII, v 10971, pp 109710H-109710H-10
- Series
- Proceedings of SPIE
- Publisher
- Spie-Int Soc Optical Engineering
- Number of pages
- 10
- Grant note
- TxDOT 0-6719 / Texas Department of Transportation
- Resource Type
- Conference proceeding
- Language
- English
- Academic Unit
- Civil, Architectural, and Environmental Engineering
- Web of Science ID
- WOS:000485112200010
- Scopus ID
- 2-s2.0-85069793089
- Other Identifier
- 991021889904504721
InCites Highlights
Data related to this publication, from InCites Benchmarking & Analytics tool:
- Collaboration types
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Materials Science, Multidisciplinary
- Optics