FN Archimer Export Format PT J TI Microstructure and tensile properties of carbon-epoxy laminates produced by automated fibre placement: Influence of a caul plate on the effects of gap and overlap embedded defects BT AF LAN, Marine CARTIE, Denis DAVIES, Peter BALEY, Christophe AS 1:1;2:2;3:3;4:1; FF 1:;2:;3:PDG-REM-RDT-LCSM;4:; C1 Univ South Brittany, LIMATB, F-56000 Lorient, France. Coriolis Composites SAS, F-56350 Queven, France. IFREMER, Ctr Bretagne, F-29280 Plouzane, France. C2 UBS, FRANCE CORIOLIS COMPOSITES SAS, FRANCE IFREMER, FRANCE SI BREST SE PDG-REM-RDT-LCSM IN WOS Ifremer jusqu'en 2018 copubli-france copubli-univ-france IF 3.719 TC 53 UR https://archimer.ifremer.fr/doc/00275/38609/37138.pdf LA English DT Article DE ;Carbon fibre;Defects;Mechanical properties;Automated fibre placement (AR) AB Automated fibre placement (AFP) enables the trajectory of unidirectional composite tape to be optimized, but laying down complex shapes with this technology can result in the introduction of defects. The aim of this experimental study is to investigate the influence of gaps and overlaps on the microstructure and tensile properties of carbon-epoxy laminates. First, a comparison between a hand-layup and AFP layup, draped and cured under the same conditions, shows equivalent microstructures and tensile properties. This provides the reference values for the study. Then, gap and overlap embedded defects (more or less severe) are introduced during manufacturing, on two cross-ply layups [(0°/(90°)5/0°] and [(90°/0°)2/90°]. Autoclave cure without a caul plate results in local thickness variation and microstructural changes which depend on the defect type. This has a strong influence on mechanical performance. Use of a caul plate avoids these variations and in this case embedded defects hardly affect tensile properties. PY 2015 PD NOV SO Composites Part A-applied Science And Manufacturing SN 1359-835X PU Elsevier Sci Ltd VL 78 UT 000362605100014 BP 124 EP 134 DI 10.1016/j.compositesa.2015.07.023 ID 38609 ER EF