Poirot, A.; Bedrici, N.; Walrick, J.-C.; Arrigoni, M. Piezoresistive Behavior of a Conductive Polyurethane Based-Foam for Real-Time Structural Monitoring. Sensors2023, 23, 5161.
Poirot, A.; Bedrici, N.; Walrick, J.-C.; Arrigoni, M. Piezoresistive Behavior of a Conductive Polyurethane Based-Foam for Real-Time Structural Monitoring. Sensors 2023, 23, 5161.
Poirot, A.; Bedrici, N.; Walrick, J.-C.; Arrigoni, M. Piezoresistive Behavior of a Conductive Polyurethane Based-Foam for Real-Time Structural Monitoring. Sensors2023, 23, 5161.
Poirot, A.; Bedrici, N.; Walrick, J.-C.; Arrigoni, M. Piezoresistive Behavior of a Conductive Polyurethane Based-Foam for Real-Time Structural Monitoring. Sensors 2023, 23, 5161.
Abstract
Smart flexible materials with piezoresistive property are increasingly used in sensors field. When embedded in structures, they would allow an in-situ structural health monitoring and damage assessment of impact loading such as crash, bird strikes and ballistic impacts. However, this could not be achieved without a deep characterization of the relation between piezoresistivity and mechanical behavior. The aim of this paper is to study the potential use of the piezoresistivity effect of a conductive foam made of a flexible polyurethane matrix filled with active carbon for integrated Structural Health Monitoring (SHM) and damage assessment applications. To do so, PolyUrethane Foam filled with Active Carbon, namely PUF-AC, are manufactured and tested under quasi-static compression tests and under Dynamic Mechanical Analyser (DMA) with in-situ measurement of its resistivity during tests. A relation is proposed for describing the evolution of the resistivity versus strain and stress. In addition, a demonstrative experiment of a PUF-AC sample subjected to low velocity impact assesses the interest of this type of materials for damage assessments.
Copyright:
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