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High-Temperature Piezoelectric Sensors for the Energy Industry

High-Temperature Piezoelectric Sensors for the Energy Industry

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Effective integrity monitoring of assets subject to corrosion and erosion while minimising the exposure of personnel and ecosystem to hazardous environments, is a challenge in many industries. One solution to this problem is permanently installed condition monitoring (PICM) equipment, which can continuously provide information on the rate of corrosion, erosion or other fault mechanisms. Coupled with this increasingly popular PICM concept is the need to operate these inspection systems in even the most severe environments. This often involves operating in extreme temperatures to allow in situ monitoring of the processes that cause failure, in order to prevent the outages and unplanned shutdowns that reduce the productivity of the process or power plant assets. Here piezoelectric materials, the essential electro-mechanical heart of ultrasonic PICM devices, are presented to highlight how novel high-temperature variants are enabling condition monitoring systems to operate in the most extreme environments. The system applicability for wall thickness monitoring in high-temperature environments is demonstrated through experimental studies on pipes at temperatures up to 350°C.

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