Date of Award

5-2026

Document Type

Thesis

Degree Name

Master of Science (MS)

Department

Mechanical Engineering

Committee Director

Drew Landman

Committee Member

Ashish Tamhane

Committee Member

Sebastian Bawab

Abstract

Interference fit joints (IFJ) are comprised of shrink fit joints (SFJ) and press fit joints (PFJ), of which press fit joints are a highly useful and easy-to-manufacture mechanical joint. This joint is used in many applications where torque transmission is required. They are made of two pieces: a shaft and a hub which are pressed together. The hub has a smaller inner diameter than the shaft’s outer diameter and friction holds the joints together. This friction then results in a load carrying capacity governed by Lame’s thick cylinder theory. This strength can also vary due to many different factors: Surface roughness, Surface hardness, machining methods, material of shaft and hub. Post processing treatments can also affect the strength of a PFJ. Identified methods are: adhesives, heat soaking, and mechanical training. An experiment was conducted using Design of Experiments methods to compare a control PFJ to a joint with adhesive (PFJa) and a joint that was heat treated (PFJb) under a torsional load. An additional test was performed to see the effect of mechanical training on each of these joints. It was found that a PFJb improved failure torque capacity by 40% while reducing standard deviation by 18% and improved ultimate torque capacity by 64% compared to the control. A PFJa reduced both the failure torque capacity and ultimate torque capacity. The effect of mechanical training was not found to be significant in my experiment.

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DOI

10.25777/ac1p-m623

ISBN

9798197809476

ORCID

0009-0009-9177-6771

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Available for download on Friday, March 05, 2027

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