FN Archimer Export Format PT J TI Influence of embedded gap and overlap fiber placement defects on the microstructure and shear and compression properties of carbon-epoxy laminates 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, Rue St Maude, F-56000 Lorient, France. Coriolis Composites SAS, Rue Condorcet, F-56350 Za Du Mourillon, Queven, France. IFREMER, Ctr Bretagne, Technopole Brest Iroise, 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 4.075 TC 55 UR https://archimer.ifremer.fr/doc/00302/41337/40523.pdf LA English DT Article DE ;Structural composites;Defects;Mechanical properties;Mechanical testing AB This paper presents results from an experimental study of the influence of embedded defects created during automated fiber tape placement, on the mechanical properties of carbon/epoxy composites. Two stacking sequences have been examined, [(-45°/+45°)3/-45°] and [90°4/0°3/90°4], in which gaps and overlaps have been introduced during fiber placement. These materials have been cured in an autoclave either with or without a caul plate, then analyzed by ultrasonic C-scan. The microstructures were characterized by scanning electron microscopy. In-plane shear tests were performed on the ±45° laminates and showed that the use of a caul plate does not affect mechanical behavior of plies in the embedded defect region. Compression tests were performed on 0/90° laminates and in this case the presence of a caul plate is critical during polymerization as it prevents thickness variations and allows defects to heal. PY 2016 PD MAR SO Composites Part A-applied Science And Manufacturing SN 1359-835X PU Elsevier Sci Ltd VL 82 UT 000370997000020 BP 198 EP 207 DI 10.1016/j.compositesa.2015.12.007 ID 41337 ER EF