Award Date

8-1-2022

Degree Type

Thesis

Degree Name

Master of Science (MS)

Department

Kinesiology and Nutrition Sciences

First Committee Member

John Mercer

Second Committee Member

Tedd Girouard

Third Committee Member

Graham McGinnis

Fourth Committee Member

Jennifer Pharr

Number of Pages

40

Abstract

Understanding factors that influence wheel vibration may have practical applications for cyclists and manufacturers. However, a reliable method to measure these vibrations and tools to interpret the data are needed. PURPOSE: To establish a methodology to measure vibration of the road bicycle wheel and to quantify measured vibrations resulting from changes velocity, tire pressure, and surface roughness. METHODS: A single participant cycled on stationary cycle rollers with different tire pressure, speed, and surface roughness conditions. An accelerometer was mounted to rim of the front wheel. Data were analyzed in the frequency domain following a Fourier Transformation. Data were reduced by calculating the sum power for each trial, Peak to Average Power Ratio (PAPR), and Frequency at a Percent of Sum Power (FPSP). RESULTS: PAPR showed a clear distinction between the smooth and rough rollers. FPSP showed little change with pressure or speed for the smooth roller condition. For the rough roller condition, changes in speed showed an increase in FPSP at different percent of sum power levels around the 80-100Hz range. CONCLUSION: Data reduction and analysis techniques were successful at identifying changes in vibration between conditions.

Controlled Subject

Bicycles--Wheels; Vibration--Measurement

Disciplines

Kinesiology

File Format

pdf

File Size

4900 KB

Degree Grantor

University of Nevada, Las Vegas

Language

English

Rights

IN COPYRIGHT. For more information about this rights statement, please visit http://rightsstatements.org/vocab/InC/1.0/

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