Publication
Influence of optical fiber sensor placement on CFRP laminates for process and structural health monitoring
| Summary: | The use of fibre reinforced polymer (FRP) composites has been increasing in the last few decades in the aircraft and aerospace industries to replace metallic structures. The use of FRPs intends to increase the mechanical performance and decrease the weight ratios of structural parts, which allows to reduce fuel consumption, carbon dioxide emissions and, therefore costs. Although composite materials hold promising achievements, their failure is still very difficult to predict, as it may result of a combination of defects, such as fibre breakage and/or misalignment, matrix macro or micro-cracking, material and stress discontinuities, fibre/matrix debonding, delaminations, etc. Fatigue and aging might also lead FRP structures to failure, as they face repeated loading and harsh environmental conditions during their life-time. The eventuality of an unpredicted failure on a composite aircraft structure often requires an over-engineered design to comply with the rigorous and exigent safety rules of aerospace industry and, particularly, of civil aircraft, counteracting the initial purpose of using composites for weight reduction. This paper studies the influence of optical fibre location along the thickness of carbon fibre reinforced polymer (CFRP) laminates to detect BVID, particularly delaminations. |
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| Main Authors: | Rocha, Helena Cristina Lopes |
| Other Authors: | Kumar, Manish; Nunes, J. P. |
| Subject: | Structural health monitoring Fibre bragg grating sensor Carbon fibre reinforced polymer composite Process monitoring Barely visible impact damage Engenharia e Tecnologia::Engenharia dos Materiais Engenharia e Tecnologia::Outras Engenharias e Tecnologias Indústria, inovação e infraestruturas |
| Year: | 2019 |
| Country: | Portugal |
| Document type: | other |
| Access type: | open access |
| Associated institution: | Universidade do Minho |
| Language: | English |
| Origin: | RepositóriUM - Universidade do Minho |
| Summary: | The use of fibre reinforced polymer (FRP) composites has been increasing in the last few decades in the aircraft and aerospace industries to replace metallic structures. The use of FRPs intends to increase the mechanical performance and decrease the weight ratios of structural parts, which allows to reduce fuel consumption, carbon dioxide emissions and, therefore costs. Although composite materials hold promising achievements, their failure is still very difficult to predict, as it may result of a combination of defects, such as fibre breakage and/or misalignment, matrix macro or micro-cracking, material and stress discontinuities, fibre/matrix debonding, delaminations, etc. Fatigue and aging might also lead FRP structures to failure, as they face repeated loading and harsh environmental conditions during their life-time. The eventuality of an unpredicted failure on a composite aircraft structure often requires an over-engineered design to comply with the rigorous and exigent safety rules of aerospace industry and, particularly, of civil aircraft, counteracting the initial purpose of using composites for weight reduction. This paper studies the influence of optical fibre location along the thickness of carbon fibre reinforced polymer (CFRP) laminates to detect BVID, particularly delaminations. |
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