Masters Theses

Abstract

"A prototype of fatigue testing machine was built to determine the fatigue strength of materials. Proposed testing prototype was displacement controlled magnetic type bend fatigue testing machine. Designed prototype was tuned to operate at or near resonance of the specimen in order to amplify excitation displacement. Low maintenance i.e. zero wear of the parts was achieved, there were no moving components in the prototype machine. Crucial components used to build were: DC power supply, solenoid, Arduino UNO, supports and laser displacement sensor. DC source used to pass current through solenoid producing magnetic field; mosfet and Arduino generated square waves of the magnetic field; supports held the specimen as simple-simple supports close to the solenoid; and laser displacement sensor recorded the displacements of the specimen. Using Euler-Bernoulli beam theory, for a simple-simple supported beam the strain was calculated from the radius of curvature of the bent beam. Using the built prototype, Aluminum 6061-T6 was tested at different strains and its respective cycles to failure was recorded. The S-N curve for Aluminum 6061-T6 obtained experimentally using prototype fatigue testing machine was compared to ASTM results"--Abstract, page iii.

Advisor(s)

Liou, Frank W.

Committee Member(s)

Kinzel, Edward C.
Pan, Heng

Department(s)

Materials Science and Engineering

Degree Name

M.S. in Manufacturing Engineering

Publisher

Missouri University of Science and Technology

Publication Date

Spring 2015

Pagination

vii, 24 pages

Note about bibliography

Includes bibliographic references (pages 22-23).

Rights

© 2015 Sai Aravind Palepu, All rights reserved.

Document Type

Thesis - Restricted Access

File Type

text

Language

English

Thesis Number

T 11198

Print OCLC #

1022846068

Electronic OCLC #

1014181309

Link to Catalog Record

Electronic access to the full-text of this document is restricted to Missouri S&T users. Otherwise, request this publication directly from Missouri S&T Library or contact your local library.

http://laurel.lso.missouri.edu/record=b12136227~S5

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