Abstract:
An in-situ ultrasonic cure monitoring sensor technology and a measurement system have been developed as part of an Advanced Technology Program. The technology is developed for composites wrapped around bridge columns for seismic retrofit. The system is based on the ultrasonic responses of thin metallic wires embedded in the composite during the cure process. A large number of experiments, both in coupons and on columns, have been conducted, including resin systems from a number of sources with different cure profiles. This paper will describe the sensor technology and the measurement instrument, present experimental results and the correlation between ultrasonic measurement and destructive differential scanning calorimeter test results.
Source: Proceedings of the 'NDE applied to Process Control of Composite Fabrication' - Conference, 1-2 Oct 1996 St. Louis, Missouri. Publisher and Organizer: Nondestructive Testing Information Analysis Center (NTIAC) Texas Research Institute Austin, Inc. Austin, Texas [http://www.ntiac.com] [Buying the Proceedings]
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