A study of post-processing for AFP-fabricated thermoplastic composites with void content and air permeability characterization

Karimi, Sasan and Yousefi Louyeh, Pouya and Barzegar Osgouei, Ali and Yıldız, Mehmet and Şaş Çaycı, Hatice Sinem (2024) A study of post-processing for AFP-fabricated thermoplastic composites with void content and air permeability characterization. Journal of Reinforced Plastics and Composites, 43 (9-10). pp. 490-503. ISSN 0731-6844 (Print) 1530-7964 (Online)

This is the latest version of this item.

Full text not available from this repository. (Request a copy)

Abstract

Improving the quality of fiber-reinforced composite laminates using out-of-autoclave techniques has been a challenge for a long time. The recent trends toward the replacement of autoclave processes with out-of-autoclave processes for thermoplastic composites still lack a compressive recipe. This study first develops an understanding of the integrated effect of the automated fiber placement (AFP) lay-up process parameters (compaction force and lay-up velocity) and the type of post-processing: i) autoclave and ii) vacuum bag only (VBO) processing with two vacuum hold times, 2 and 24 h. The void content results highlight the potential of the VBO process to replace the autoclave with an improved void content of VBO with 24 vacuum hold times. Then, this result has been correlated with the morphology of voids after the AFP lay-up as isolated or connected via air permeability characterization. This study reveals that the high air permeability to effective porosity ratio of samples after AFP lay-up which is achievable with low compaction force facilitates the air removal mechanism during the VBO process with sufficient vacuum hold times.
Item Type: Article
Uncontrolled Keywords: air permeability; Automated fiber placement (AFP); thermoplastics composites; vacuum bag only (VBO) process; void content
Divisions: Faculty of Engineering and Natural Sciences
Integrated Manufacturing Technologies Research and Application Center
Depositing User: Mehmet Yıldız
Date Deposited: 25 Sep 2024 15:59
Last Modified: 25 Sep 2024 15:59
URI: https://research.sabanciuniv.edu/id/eprint/50155

Available Versions of this Item

Actions (login required)

View Item
View Item