Vacuum-bag processing of sandwich structures: Role of honeycomb pressure level on skin-core adhesion and skin quality

被引：31

作者：

Tavares, S. Sequeira ^{[1
]}

Caillet-Bois, N. ^{[1
]}

Michaud, V. ^{[1
]}

Manson, J. -A. E. ^{[1
]}

机构：

[1] Ecole Polytech Fed Lausanne, Lab Technol Composites & Polymeres, CH-1015 Lausanne, Switzerland

来源：

COMPOSITES SCIENCE AND TECHNOLOGY | 2010年 / 70卷 / 05期

基金：

瑞士国家科学基金会;

关键词：

Sandwich; Delamination; Fracture toughness; Porosity/Voids; Permeability; DELAMINATION; MECHANISMS; STRENGTH; FILLET;

D O I：

10.1016/j.compscitech.2010.01.015

中图分类号：

TB33 [复合材料];

学科分类号：

摘要：

Non-autoclave processing of honeycomb sandwich structures generally leads to poor compaction and high porosity of the skins, along with a decreased skin-core adhesion The pressure level inside the honeycomb cells plays an important role and is controlled by the permeability to air of the skins In this work, an initial range of skin permeability to air was explored by perforating the prepregs and adhesive layer selectively The role of the resulting pressure inside the honeycomb on skin-core adhesion and skin quality was evaluated. Prepreg an permeability was found to control skin-core adhesion through the pressure in the honeycomb and potential outgassing of the adhesive layer An optimal range of initial pressure inside the honeycomb was found to be 40-70 kPa. A universal process window was proposed to determine the time flame of vacuum application leading to an optimal initial honeycomb pressure level. (C) 2010 Elsevier Ltd. All rights reserved.

引用

页码：797 / 803

页数：7

共 25 条

[21] Non-autoclave processing of honeycomb sandwich structures: Skin through thickness air permeability during cure
Tavares, S. Sequeira
Caillet-Bois, N.
Michaud, V.
Manson, J. -A. E.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING, 2010, 41 (05) : 646 - 652
[22] Air evacuation during vacuum bag only prepreg processing of honeycomb sandwich structures: In-plane air extraction prior to cure
Levy, Arthur
Kratz, James
Hubert, Pascal
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING, 2015, 68 : 365 - 376
[23] A skin-core debonding quantitative algorithm based on hexagonal units reconstruction for air-coupled ultrasonic C-scan images of honeycomb sandwich structure
Zhang, Hui
Liu, Si
Rui, Xiaobo
Zhu, Xiaoxi
Sun, Jing
APPLIED ACOUSTICS, 2022, 198
[24] Influences of skin thickness, core topology, depth and direction on flexural deformation and ductile failure of Al honeycomb-based sandwich structures
Li W.
Atsushi D.
Oh Y.H.
Jirathearanat S.
Wu Z.A.
Chua B.W.
Composites Part B: Engineering, 2022, 239
[25] Vacuum bag only co-bonding prepreg skins to aramid honeycomb core. Part I. Model and material properties for core pressure during processing
Kratz, James
Hubert, Pascal
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING, 2015, 72 : 228 - 238

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