Date of Award

Fall 12-1-2006

Document Type

Thesis

Degree Name

Master of Science (MS)

Department

Industrial Engineering

First Advisor

M. A. Badar

Second Advisor

Marion Schafer

Third Advisor

Anthony Gilberti

Abstract

This research investigated the quality and strength characteristics ofboth American and Chinese manufactured fasteners. The purpose of this research was to determine if there is a significant statistical difference between both manufacturers dimensional and tensile strength characteristics as to the American National Standards Institute's specified tolerances. The researcher selected the independent samples t-test to analyze the raw data collected from the experiment. SPSS 13.0 statistical analysis software was used to determine the degree of correlation between the independent variables: fastener dimensions, and ultimate tensile strengths. The researcher involved utilizing a calibrated micrometer that was capable to producing measurements to the thousandth of an inch to measure a variety of independent fastener dimensions. In addition, the researcher utilized a United Testing Systems tensile tester to test independent ultimate tensile strengths for both manufacturers' fastener populations. In summary, the results of the research and studied statistics identified that there is a significant difference in tensile strength properties between both manufacturers. Additionally the research indicated that there is not a significant difference in either manufacturer's dimensional characteristics.

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