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Electrical and Computer Engineering
Detectors -- Design and construction<br />Reinforced concrete -- Cracking<br />Time-domain reflectometry
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A Rapid-Acquisition Electrical Time-Domain Reflectometer For Analysis Of Time-Variant Impedance Discontinuities, Joseph Andrew Bishop
A Rapid-Acquisition Electrical Time-Domain Reflectometer For Analysis Of Time-Variant Impedance Discontinuities, Joseph Andrew Bishop
Masters Theses
"A distributed crack sensor has been developed for the measurement of cracks in concrete structures. The sensor is measured using a distributed measurement technique known as electrical time-domain reflectometry (ETDR). ETDR has traditionally been used to measure time-invariant (i.e. unchanging with time) impedance discontinuities, however applications of the sensor in structural failure analysis require measurement of time-variant (i.e. changing with time) impedance discontinuities at rates as high as 10 k measurements per second. ETDR is a suitable measurement technique for these applications since a time-domain reflectometer (TDR) acquisition can be performed in less than 100 µs. Employment of ETDR in …