In-situ characterization of 3D printed continuous fiber reinforced composites: A methodological study using fiber Bragg grating sensors
作者： Charoula Kousiatza , Dimitris Tzetzis , Dimitris Karalekas
DOI: 10.1016/J.COMPSCITECH.2019.02.008
关键词:
摘要: Abstract This work demonstrates the applicability of optical fiber Bragg grating (FBG) sensors for in-situ characterization continuous reinforced thermoplastic composites (CFRTPCs) fabricated through Fused Deposition Modeling (FDM) technique. Prismatic carbon and glass Nylon composite specimens were built with various orientations using a MarkTwo desktop 3D printer. FBGs embedded along thermocouples (TCs) into middle-plane structures simultaneous monitoring both residual strains temperature profiles developed during building procedure. Additionally, strain magnitudes further investigated at post-fabrication state. The samples then subjected to thermal loading measuring thermally induced as function applied consequently, composites' coefficients expansion (CTEs), based on recorded FBG wavelengths. results indicate that in-process generated calculated CTE values are vigorously affected by type orientation. It is also shown fields strongly dependent fabrication well behavior under temperature.
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