Multi-instrumentation monitoring for the curing process of a composite structure. (June 2020)

• Record Type: Journal Article
• Authors: Collombet, F.; Torres, M.; Douchin, B.; Crouzeix, L.; Grunevald, Y.-H.; Lubin, J.; Camps, T.; Jacob, X.; Luyckx, G.; Wu, K.-T.
• Is Part Of: Measurement. Volume 157(2020)
• Publication Date: 2020-06
• Subjects: Curing process -- Carbon-epoxy plate -- Tunnelling junction sensor -- Optical fibres -- Flexible ultrasonic transducers; Weights and measures -- Periodicals; Measurement -- Periodicals; Measurement; Weights and measures; Periodicals; 530.8
• DOI: 10.1016/j.measurement.2020.107635
• Languages: English
• ISSNs: 0263-2241

Abstract

Graphical abstract: Multi-instrumented composite plate for curing monitoring. Highlights: The use of Tunnelling Junction Sensors for monitoring temperature during curing. The use of Flexible Ultrasonic Transducers for tracking resin consolidation. The use of Modified Optical Fibres for detecting residual strains after curing. The embedding of three sensor technologies to track CFRP's curing process. Abstract: The phenomena occurring during curing process is one of the major issues to deal in order to improve the physical properties of a composite structure. In this work, a multi-instrumentation setup is conceived in order to have a better understanding of composites curing using different devices (tunnelling junction sensors, optical fibres and flexible ultrasonic transducers). The sensors are simultaneously embedded or placed on the surface of a thick carbon-epoxy plate for monitoring its autoclave cycle. By means of all signals, an evolution of temperature, internal strains and physical state changes is described. A qualitative statement from all measurements is provided to have a first approach of the initial state of the composite plate. With this methodology, the initial state after composite manufacturing can be considered in the structure design procedure to improve its mechanical performance.