Theses and Dissertations

Advisor

Kim, Han-Gyu

Committee Member

Choi, Seungdeog

Committee Member

Huberty, Wayne

Committee Member

Sescu, Adrian

Date of Degree

5-15-2026

Original embargo terms

Immediate Worldwide Access

Document Type

Graduate Thesis - Open Access

Major

Aerospace Engineering

Degree Name

Master of Science (M.S.)

College

James Worth Bagley College of Engineering

Department

Department of Aerospace Engineering

Abstract

This research investigated whether a non-wound carbon fiber reinforced composite (CFRC) sleeve could serve as an effective retention mechanism for a high-speed, multi-layer ferrite-based interior permanent magnet motor. Material characterization testing was conducted on IM7/CYCOM-5320 and IM7/8552, with IM7/8552 selected due to its superior commercial availability. Experimentally obtained properties for both materials fell within acceptable tolerances of published values. Sleeves were manufactured to rotor design specifications (50-mm width, 1.2-mm thickness, 88.6-mm diameter) and tested per ASTM D2290 Procedure A to determine apparent hoop-failure stress. These experimental results validated a finite element model of the D2290 test, confirming realistic strain patterns and load scaling. A simplified full-rotor model demonstrated that operational stresses remained well below critical material strengths, yielding a factor of safety of at least 5, confirming that IM7/8552 CFRC sleeves can effectively retain the rotor under operating conditions.

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