Acoustic Emission Equipment for Infrastructure Monitoring

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Acoustic Emission Equipment for Infrastructure Monitoring

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Minnesota Department of Transportation




This system consists of acoustic emissions sensors, preamplifiers, filers, an AE monitor, and a digital oscilloscope. The system has been applied successfully to both steel and concrete structures and used to detect brittle fracture and low-cycle fatigue failures in welded steel joints and crack propagation in cover-plated rolled bridge girders, in the field and in the laboratory. The AE system detected initial cracking during the flexural crack testing of two high-strength concrete prestressed bridge girders. The acoustic emission monitoring of bond tests also provided insight into the behavior of the bond between glass fiber reinforced polymer rebar and concrete.


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Center for Transportation Studies, Minnesota Department of Transportation

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Shield, Carol K.. (1999). Acoustic Emission Equipment for Infrastructure Monitoring. Retrieved from the University Digital Conservancy,

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