Mechanical Engineering Commons^™

Parametric Study Of The Cutting Process And Surface Formation During Elliptical Vibration Assisted Single Point Cutting, Nikolai D. Farrus

Electronic Thesis and Dissertation Repository

Elliptical vibration cutting has enabled the fabrication of numerous functional surfaces such as optical quality surface finishes, micro/nano surface texturing, and improved cutting force reduction on ferrous and other hard‑to‑cut materials. This wide range of capabilities comes from the high‑frequency elliptical vibrations produced at the tool tip, ultimately introducing discontinuous contact between the cutting tool and workpiece. However, despite the relative use of this technology, there has been limited investigation on the overarching parametric influence that its cutting parameters have on process outcomes such as cutting forces and surface roughness formation.

The current thesis addresses this research gap with the …

Strategies For Ultraprecise Single Point Cutting Of V-Grooves, Delfim A C Joao

Electronic Thesis and Dissertation Repository

V-groove microstructures have found numerous functionalization applications in mechanical, electronic, photonic, biomechanical and optical components. However, despite their wide use, the manufacturing processes associated with their fabrication are limited to axial strategies with a constant depth of cut that do not allow the control of the cutting force and cutting time, and therefore leading to significant micro-burrs as well as an inability to fabricate high aspect ratio grooves. The current thesis addresses this problem with the development of three cutting strategies that make use of a single point cutting process. The study to be detailed herein includes analytical, numerical and …

Ultraprecise Single Point Inverted Cutting Of Right Triangular Prismatic Retroreflectors: Process Enhancements And Cutting Mechanics, Nicolas Milliken

Electronic Thesis and Dissertation Repository

Automotive lighting industry relies on retroreflective components to increase driver awareness in low-light conditions since their primary functionality is to return incident light back to the source and/or observer with minimal scatter.

Presently, industry makes use of conventional pin-bundling techniques for the fabrication of the retroreflective components. This method is time consuming, labour intensive, and restrictive with respect to the design process. For these reasons, the ultraprecise single point inverted cutting (USPIC) technology was developed as an efficient alternative for manufacturing novel right triangular prismatic (RTP) retroreflective structures.

This thesis outlines a number of enhancements that improve both the quality …

Development Of Microfabrication Process For Micro Inductive Sensors, Xueguang Han

Electronic Thesis and Dissertation Repository

Inductive position/angle sensors are widely used in vehicles and have very bright market prospects. However, the current sensor designs often suffer from high space consuming which increases the assembly size of vehicle parts. In addition, the high emission of traditional inductive sensors can cause the interference with other electronic components. In this dissertation, a novel and reliable microfabrication process was developed to fabricate a newly designed miniaturized inductive sensor for gas pedal use. The HFSS simulation has proved that the newly developed inductive sensor could provide sufficient sensitivity to meet the sensing requirements. The performance of the sensor was well …