TY - JOUR A1 - Munzke, Dorit A1 - Kraus, David A1 - Eisermann, René A1 - Kübler, Stefan A1 - Schukar, Marcus A1 - Nagel, Lukas A1 - Hickmann, Stefan A1 - Trappe, Volker T1 - Distributed fiber-optic strain sensing with millimeter spatial resolution for the structural health monitoring of multiaxial loaded GFRP tube specimens T2 - Polymer Testing N2 - Due to their high strength-to-weight ratio and excellent fatigue resistance, glass fiber reinforced polymers (GFRP) are used as a construction material in a variety of applications including composite high-pressure gas storage vessels. Thus, an early damage detection of the composite material is of great importance. Material degradation can be determined via measuring the distributed strain profile of the GFRP structures. In this article, swept wavelength interferometry based distributed strain sensing (DSS) was applied for structural health monitoring of internal pressure loaded GFRP tube specimens. Measured strain profiles were compared to theoretical calculation considering Classical Lamination Theory. Reliable strain measurements with millimeter resolution were executed even at elongations of up to 3% in the radial direction caused by high internal pressure load. Material fatigue was localized by damaged-induced strain changes during operation, and detected already at 40% of burst pressure. PB - Elsevier Ltd. KW - GFRP KW - Swept wavelength interferometry KW - Distributed fiber optic sensing KW - Material degradation KW - Structural health monitoring PY - 2019 UR - https://opus4.kobv.de/opus4-bam/frontdoor/index/index/docId/48950 AN - OPUS4-48950 SN - 0142-9418 VL - 80 SP - 106085 AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany