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Laboratory Experiment in Engineering Materials for Upper-Level Undergraduate and Graduate Students

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Conference

2013 ASEE Annual Conference & Exposition

Location

Atlanta, Georgia

Publication Date

June 23, 2013

Start Date

June 23, 2013

End Date

June 26, 2013

ISSN

2153-5965

Conference Session

Laboratory Experiences in Mechanical, Materials and Thermal Systems

Tagged Division

Division Experimentation & Lab-Oriented Studies

Page Count

13

Page Numbers

23.845.1 - 23.845.13

DOI

10.18260/1-2--19859

Permanent URL

https://peer.asee.org/19859

Download Count

111

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Paper Authors

biography

David R Veazie P.E. Southern Polytechnic State University

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Dr. Veazie received his B.S. in Mechanical Engineering from Southern University in 1986, and his M.S. and Ph.D. in Mechanical Engineering from Georgia Tech in 1987 and 1993, respectively. He worked for AT&T Bell Laboratories in New Jersey as a Member of the Technical Staff and was a National Research Council (NRC) Postdoctoral Fellow at the NASA Langley Research Center. In 1994, he joined Clark Atlanta University’s Department of Engineering, and was the Director of the Mechanical Testing Laboratories (MTL) and Associate Director of the NASA funded High Performance Polymers and Composites (HiPPAC) Center. Presently, he is a Professor of Mechanical Engineering and the Director of the Center for Advanced Materials Research and Education (CAMRE) at the Southern Polytechnic State University.

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Abstract

Laboratory Experiment in Engineering Materials for Upper- Level Undergraduate and Graduate StudentsLaboratory experiments are a critical part of the required curriculum for upper-levelundergraduate and graduate students seeking degrees in the science, technology, engineering andmathematics (STEM) fields. These laboratory experiments usually involve materials and/ormaterial properties that were designed to establish an level of specification and implementationmethodology. However, often these laboratory experiments were developed for well definedsystems in controlled environments to take advantage of limited resources such as expensivematerials, laboratory space and testing supplies. Material systems that incorporate a dependenceon more that one parameter for processing and subsequent characterization pose a significantproblem in that the experiment designer may not possess the information to identify the keyparameters that influence the critical properties sought after. The ultimate goal is for the studentexperimental designer to predict parameters and properties based on a limited number ofexperiments or available data.The proposed methodology in this paper describes a general full factorial design for experimentsinvolving the mechanical characterization, specifically the mechanical strength, and processingparameters of a material. This Factorial Design Analysis (FDA) approach facilitates a ‘between-participants’ design analysis that includes more than one independent variable, and has theadvantage over a simple randomized design in that you can test the effect of more than oneindependent variable and the interactive effect of the various independent variables. The methodis validated for the optimization of the boundary conditions that influence the material propertiesof electrodeposited metals. Specifically, a 2k factorial statistical analysis is conducted, analyzed,and a mathematical model derived, to describe how the electrolytes’ boundary conditionsinfluence the mechanical strength of electrodeposited nickel-iron (Ni80Fe20). The critical externalboundary conditions examined for this material system include the current density of theelectrolytic bath, the bath temperature, and the speed of agitation in the bath. Results show theANOVA (analysis of variance) table of results for the critical factors, as well as the F-test on theinteractions. Based on the results, regression models are developed and surface plots presentedfor the mechanical strength of the material system as a function of the external boundaryconditions.

Veazie, D. R. (2013, June), Laboratory Experiment in Engineering Materials for Upper-Level Undergraduate and Graduate Students Paper presented at 2013 ASEE Annual Conference & Exposition, Atlanta, Georgia. 10.18260/1-2--19859

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