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Smart Composites for Structural Health Monitoring

A special issue of Sensors (ISSN 1424-8220). This special issue belongs to the section "Sensor Materials".

Deadline for manuscript submissions: closed (31 October 2023) | Viewed by 2212

Special Issue Editor


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Guest Editor
Department of Aerospace Materials and Processes, Universidad Politecnica de Madrid, 28040 Madrid, Spain
Interests: composite materials; structural health monitoring; fiber optic sensors; smart structures; aerostructures
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Despite progress in developing composites with sensing, actuating, and energy-harvesting capabilities, there is a gap in the practical implementation of laboratory prototypes in real-life structures. The potential benefits of these emerging materials, including spatially distributed sensing, are substantial for improved safety, reduced maintenance costs, and an extended asset life. To bridge the gap between the research and practical applications, this Special Issue seeks to publish theoretical and experimental studies on the implementation of smart composite materials for SHM. We welcome submissions on field investigations and case studies that involve the use of smart composites for engineering structures, as well as studies on characterizing and packaging smart composites for field implementation. The aim of this Special Issue is to provide a platform for researchers and professionals to share their insights, challenges, and solutions on the practical use of smart composites for SHM.

Prof. Dr. Alfredo Güemes
Guest Editor

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Keywords

  • SHM
  • composites
  • piezoresistive
  • piezoelectric
  • civil infrastructure
  • condition-based maintenance

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Published Papers (1 paper)

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Research

19 pages, 9554 KiB  
Article
Piezoresistive Behavior of a Conductive Polyurethane Based-Foam for Real-Time Structural Monitoring
by Antoine Poirot, Nacera Bedrici, Jean-Christophe Walrick and Michel Arrigoni
Sensors 2023, 23(11), 5161; https://doi.org/10.3390/s23115161 - 29 May 2023
Cited by 1 | Viewed by 1854
Abstract
Smart flexible materials with piezoresistive property are increasingly used in the field of sensors. When embedded in structures, they would allow for in situ structural health monitoring and damage assessment of impact loading, such as crash, bird strikes and ballistic impacts; however, this [...] Read more.
Smart flexible materials with piezoresistive property are increasingly used in the field of sensors. When embedded in structures, they would allow for 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 activated carbon for integrated structural health monitoring (SHM) and low-energy impact detection. To do so, polyurethane foam filled with activated carbon, namely PUF-AC, is tested under quasi-static compressions and under a dynamic mechanical analyzer (DMA) with in situ measurements of its electrical resistance. A new relation is proposed for describing the evolution of the resistivity versus strain rate showing that a link exists between electrical sensitivity and viscoelasticity. In addition, a first demonstrative experiment of feasibility of an SHM application using piezoresistive foam embedded in a composite sandwich structure is realized by a low-energy impact (2 J) test. Full article
(This article belongs to the Special Issue Smart Composites for Structural Health Monitoring)
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