[HTML][HTML] A review of out-of-autoclave prepregs–Material properties, process phenomena, and manufacturing considerations

T Centea, LK Grunenfelder, SR Nutt - Composites Part A: Applied Science …, 2015 - Elsevier
Abstract Out-of-autoclave (OoA) prepreg materials and methods have gained acceptance
over the past decade because of the ability to produce autoclave-quality components under …

[HTML][HTML] The use of X-ray computed tomography for design and process modeling of aerospace composites: A review

K Naresh, KA Khan, R Umer, WJ Cantwell - Materials & Design, 2020 - Elsevier
Optimization of process parameters of major aerospace composites manufacturing
techniques is essential for manufacturing high-quality aerospace components. However …

[HTML][HTML] Anisotropic air permeability in out-of-autoclave prepregs: Effect on honeycomb panel evacuation prior to cure

J Kratz, P Hubert - Composites Part A: Applied Science and …, 2013 - Elsevier
Air evacuation is crucial to achieve low porosity for vacuum-bag-only manufacturing of out-of-
autoclave prepregs. In this paper, the air permeability of composite skins was evaluated for …

Out-of-autoclave prepreg processing

P Hubert, T Centea, L Grunefelder, S Nutt… - … composite materials II, 2018 - hal.science
The objective of this chapter is to provide an overview of the processing aspects of out-of-
autoclave (OOA) prepregs. This chapter serves as a design guideline for the definition of …

In situ observations and pressure measurements for autoclave co-cure of honeycomb core sandwich structures

M Anders, D Zebrine, T Centea… - Journal of …, 2017 - asmedigitalcollection.asme.org
In this article, we describe an experimental method for investigating the autoclave co-cure of
honeycomb core composite sandwich structures. The design and capabilities of a custom …

[HTML][HTML] Process diagnostics for co-cure of sandwich structures using in situ visualization

M Anders, D Zebrine, T Centea, SR Nutt - Composites Part A: Applied …, 2019 - Elsevier
Aerospace sandwich structures are often manufactured using an autoclave co-cure process,
in which prepreg facesheets are cured and bonded to honeycomb core simultaneously. Co …

[HTML][HTML] Air evacuation during vacuum bag only prepreg processing of honeycomb sandwich structures: In-plane air extraction prior to cure

A Levy, J Kratz, P Hubert - Composites Part A: applied science and …, 2015 - Elsevier
Abstract Out-of-autoclave (OoA) prepregs offer good in-plane air permeability that enable
efficient in-plane air-extraction. In this paper, OoA prepregs skins were applied to …

[HTML][HTML] The variation mechanism of core pressure and its influence on the surface quality of honeycomb sandwich composite with thin facesheets

Y Fan, X Yang, J He, C Sun, S Wang, Y Gu… - Journal of Materials …, 2021 - Elsevier
This paper successfully achieves the in-situ monitoring on core pressure of honeycomb
sandwich composite during hot-pressing process by using a self-designed pressure sensing …

[HTML][HTML] A bond-line porosity model that integrates fillet shape and prepreg facesheet consolidation during equilibrated co-cure of sandwich composite structures

NN Kermani, P Simacek, SG Advani - Composites Part A: Applied Science …, 2020 - Elsevier
Honeycomb core sandwich structures are co-cured to bond partially cured thermoset
prepreg facesheets with an adhesive layer to both sides of the honeycomb core under a pre …

[HTML][HTML] Vacuum-bag-only co-bonding prepreg skins to aramid honeycomb core. Part II. In-situ core pressure response using embedded sensors

J Kratz, P Hubert - Composites Part A: Applied Science and …, 2015 - Elsevier
Miniature pressure sensors were embedded into the honeycomb core of sandwich panels
featuring both tool-side and bag-side skins. The pressure response was measured …