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DIGITAL LIBRARY: CAMX 2023 | ATLANTA, GA | OCTOBER 30-NOVEMBER 2

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Three-Point Bending of Honeycomb-Core Sandwich Beams with Composite Oriented Strand Board Face Sheets

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Title: Three-Point Bending of Honeycomb-Core Sandwich Beams with Composite Oriented Strand Board Face Sheets

Authors: Wenyue Hu, Carina Li, Christian Moreno, Frank Nguyen, Bo Jin

DOI: 10.33599/nasampe/c.23.0179

Abstract: Sandwich structures for lightweight construction applications, particularly in the aerospace industry, require high specific strength and stiffness. Employing Composite Oriented Strand Board (COSB) face sheets, an innovative aerospace-grade material derived from reused carbon fiber-epoxy prepreg strands, this study investigates the mechanical behavior of honeycomb-core sandwich structures under three-point bending. Given that COSB is a tunable material with controllable thickness, microstructure, and mechanical performances, the sandwich structure gains its advantage by judicious selection of strand aspect ratio. This study only focuses on one aspect ratio, which is 1:5 prepreg strands. By analyzing the effects of different core thicknesses and two different manufacturing methods, which are mechanical agitation and mat-stacking, the study aims to identify optimal configurations for enhanced mechanical performance. Additionally, using COSB promotes material efficiency and offers environmental benefits by repurposing the expired aerospace prepreg strands. This sustainable approach contributes to developing eco-friendly manufacturing processes and reducing waste in the aerospace industry. Findings from this investigation have the potential to significantly impact the development of novel sandwich structures that are efficient, sustainable, and versatile. These advancements in lightweight materials and their structural applications stand to revolutionize the aerospace, automotive, and civil industries, paving the way for more sustainable, high-performance constructions that meet the increasing demands of modern engineering challenges.

References: [1] Bo Cheng Jin, Xiaochen Li, Atul Jain, Carlos González, Javier LLorca, Steven Nutt. Optimizing microstructures and mechanical properties of composite oriented strand board from reused prepreg. Composite Structures, Volume 174, 2017, Pages 389-398, ISSN 0263-8223. [2] Jin B, Li X, Jain A, Wu M, Mier R, Herraez M, Gonzalez C, LLorca J, Nutt S. Prediction of the stiffness of reused carbon fiber/epoxy composite oriented strand board using finite element methods. In: Conference proceeding. SAMPE Long Beach, United States, September 26–29, 2016. [3] Jin B, Li X, Wu M, Jain A, Jormescu A, Gonzalez C, LLorca J, Nutt S. Nondestructive testing and evaluation of conventional and reused carbon fiber epoxy composites using ultrasonic and stitched micro-CT. In: Conference proceeding. SAMPE Long Beach, United States, September 26-29, 2016. [4] Jin B, Li X, Mier R, Pun A, Joshi S, Nutt S. Parametric modeling, higher order FEA and experimental investigation of hat-stiffened composite panels. Compos Struct 2015;128:207–20. [5] Jin B, Pelegri A. Three-dimensional numerical simulation of random fiber composites with high aspect ratio and high volume fraction. J Eng Mater Technol 2011;133:041014. [6] Hu W, Wang X, Bowland C, Nguyen P, Li C, Nutt S, Jin B. Deep Learning for Void Detection in Composite Oriented Strand Board. In: Conference proceeding. CAMX Anaheim, United States, October 17 - 20, 2022.

Conference: CAMX 2023

Publication Date: 2023/10/30

SKU: TP23-0000000179

Pages: 15

Price: $30.00

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