"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.
Liou, Frank W.
Kinzel, Edward C.
Materials Science and Engineering
M.S. in Manufacturing Engineering
Missouri University of Science and Technology
vii, 24 pages
© 2015 Sai Aravind Palepu, All rights reserved.
Thesis - Restricted Access
Electronic OCLC #
Palepu, Sai Aravind, "Developing a novel methodolgy and testbed for fatigue analysis of metal specimens" (2015). Masters Theses. 7706.