Journal of Microwave Power and Electromagnetic Energy (JMPEE)
TITLE	Microwave Non-Destructive Flaw/Defect Detection System for Non-Metallic Media Supported by Microprocessor-Based Instrumentation [PDF]
AUTHORS	J. Kurian, K. Jose, K. Balakrishnan and K. Nair 1989 24 2 74-78
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Abstract This paper presents a microwave non-destructive test (NDT) method for detection of inhomogeneities inside non-metallic media, and a microprocessor-based instrumentation and control system. The results, monitored on automobile tires, are presented. Each portion of the tire is scanned by a microwave signal and the amplitude of the transmitted signal is measured by a signal processing unit incorporating an 8085 microprocessor. The instrumentation system developed has an automatic "stop "when a flaw/defect is detected. The method provides an accurate monitoring of each segment of the tire. This method can also be extended to other non-metallic objects which have some symmetry about an axis. Key Words: Microwave measurements, microwave non-destructive testing, microprocessor based instrumentation, microwave applications.