[HTML][HTML] Modeling delamination migration in composite laminates using an enhanced semi-discrete damage model (eSD2M)

MH Nguyen, AM Waas - International Journal of Solids and Structures, 2022 - Elsevier
This paper presents an extension of the semi-discrete damage model (SD2M)(Nguyen and
Waas, 2020a, Nguyen and Waas, 2020b), implemented using the finite element (FE) …

Damage progression and strength prediction of open-hole CFRP laminates containing ply gaps

S Onodera, K Kawahara, S Yashiro - Engineering Fracture Mechanics, 2023 - Elsevier
Although automated fiber placement manufacturing can improve productivity, gaps and
overlaps of plies occur due to the low position accuracy of the robot arm. This study …

[HTML][HTML] X-ray micro-computed tomography for mechanical behaviour analysis of Automated Fiber Placement (AFP) laminates with integrated gaps and overlaps

F Diemar, J Holmes, S Sommacal, D Aparici-Böhlke… - Composite …, 2025 - Elsevier
Abstract Automated Fiber Placement (AFP) is a manufacturing technique widely used for the
serial production of aerospace parts. A deep understanding of the effect of lay-up defects is …

An experimental implication of long‐term hot‐wet‐aged carbon fiber/polyether ketone ketone composites: the impact of automated fiber placement process …

EF Sukur, S Elmas, V Eskizeybek… - Journal of Applied …, 2023 - Wiley Online Library
During the service life of aerospace‐grade composites, process parameters and process‐
induced defects may become crucial. Most studies in this field have mainly focused on the …

Role of resin percolation in gap filling mechanisms during the thin ply thermosetting automated tape placement process

P Simacek, NN Kermani, V Gargitter… - Composites Part A: Applied …, 2022 - Elsevier
During the automated tape placement process, gaps between adjacent tapes are created
due to the limitation of machine accuracy, especially at higher speeds. These gaps are …

Effects of defects in automated fiber placement laminates and its correlation to automated optical inspection results

B Böckl, A Wedel, A Misik… - Journal of Reinforced …, 2023 - journals.sagepub.com
Automated Fiber Placement (AFP) is a widely used production process for the manufacturing
of large scale CFRP parts. However, the occurrence of manufacturing defects such as gaps …

Gap filling mechanisms during the thin ply Automated Tape Placement process

NN Kermani, V Gargitter, P Simacek… - Composites Part A: Applied …, 2021 - Elsevier
Abstract Automated Tape Placement (ATP) is one of the attractive automated composite
manufacturing processes as it reduces labor cost, increases production rate and improves …

Robotic automated fiber placement of carbon fiber towpregs

A Forcellese, T Mancia, AC Russo… - Materials and …, 2022 - Taylor & Francis
ABSTRACT Robotic Automated Fiber Placement (R-AFP) technology was developed to
manufacture composite laminates by placing carbon fiber thermoset towpregs, obtained by …

Impact damage assessment of thin defective composite laminates manufactured by automated fiber placement technique

M Ghayour, R Ganesan, M Hojjati - Composite Structures, 2023 - Elsevier
Fiber tow-gap is a composite defect that occurs during fiber deposition using Automated
Fiber Placement technique. This defect resulting from the inherent gap between the adjacent …

Modeling and analyzing layup gaps in the trajectory planning for automated tape placement

P Zhang, L Yin, Z Zhou, Y Tong, W Feng - Computer-Aided Design, 2023 - Elsevier
Composite materials are widely used in the aerospace industry thanks to their lightweight
along with high stiffness and strength. Automated tape placement (ATP) is an important …