6/14/2023 0 Comments Piezo bridges![]() The sensors operate without batteries and are small enough to be embedded inside concrete or attached to steel structures. One prospective solution to structural monitoring concerns is piezo-floating-gate (PFG)-based sensing technology. These factors justify the pressing need for an autonomous, continuous, and long-term monitoring system. The focus of this FHWA research is to develop a unique sensor for monitoring fatigue cracks in steel bridges. There are many factors that lead to bridge failures including natural hazards, crashes, overloading, and deterioration and fatigue cracking (which could result in collapse if left unchecked and could cause bridge closures). ![]() Results from this method are highly influenced by environmental conditions, such as ambient temperature, at the time of assessment. ![]() Timely information gathered from such technologies will undoubtedly help transportation agencies in the corrective and urgent decisionmaking process.Ĭurrently, state-of-the-art technologies and solutions evaluate the condition of a structure at a given interval, providing only a snapshot at the time when the measurements are taken. The development of advanced structural monitoring methods can facilitate the early detection of possible structural deterioration, with the goal to extend the lifespan of structures. Research sponsored by the Federal Highway Administration is paving the way for wireless, self-powered sensors capable of continuously monitoring infrastructure. These stakeholders need to have precise and accurate information on infrastructure conditions before making decisions such as maintenance strategies or investments. The ability to monitor the condition of bridges and other civil infrastructure systems is of primary interest to all infrastructure owners and operators. Nizar Lajnef, Michigan State University This graduate student is installing a prototype of the piezo-floating-gate (PFG) sensor on the Mackinac Bridge in Michigan. ![]() FHWA-sponsored research is aiming to advance the technology. Wireless, self-powered sensors may be the key to continuously monitoring infrastructure. ![]()
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