Date of Award

Spring 2020

Document Type

Thesis

Degree Name

Master of Science (MS)

Department

Mechanical & Aerospace Engineering

Program/Concentration

Mechanical Engineering

Committee Director

Oleksandr G. Kravchenko

Committee Member

Krishna Kaipa

Committee Member

Dipankar Ghosh

Committee Member

Andrew Bergan

Abstract

Repair and reinforcement of composite honeycomb structures is an area of concern as higher demands are being placed on high strength, lightweight structural materials, such as carbon fiber reinforced plastics and corresponding honeycomb structures. A common issue with these structures is when a delamination in the facesheet may form and spread, leading to a failure scenario. An investigation of adding a through thickness reinforcement (TTR) to these structures at the sample level that undergo four-point-bending, tension, and joining methods is conducted throughout this thesis. The embedding of pultruded carbon fiber rods is found to be an ideal addition to composite honeycomb structures, not only in terms of reinforcement but also for repair and damage isolation. Facesheet thickness is found to play and important role in the effectiveness of TTR in four-point-bending. Adhesively bonded joints are tested to failure and the addition of defects and TTR are used to further analyze the potential failures of double lap joints in composite structures and how TTR may help to minimize damage in those scenarios.

DOI

10.25777/zvfj-ad88

ISBN

9781082628344

ORCID

0000-0003-3461-0918

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