event
PhD Proposal by Camilla Johnson
Primary tabs
THE SCHOOL OF MATERIALS SCIENCE AND ENGINEERING
GEORGIA INSTITUTE OF TECHNOLOGY
Under the provisions of the regulations for the degree
DOCTOR OF PHILOSOPHY
on Tuesday, August 24, 2021
9:30 AM
via
BlueJeans Video Conferencing
https://bluejeans.com/448540280/7504
will be held the
DISSERTATION PROPOSAL DEFENSE
for
Camilla Johnson
“Rapid Evaluation of Cyclic Performance Using Small-Volume Metal Samples Through Spherical Indentation”
Committee Members:
Prof. Surya R. Kalidindi, Advisor, ME/MSE/CSE
Prof. Aaron Stebner, ME/MSE
Prof. David McDowell, ME/MSE
Prof. Richard Neu, ME/MSE
Reji John, Ph.D., Air Force Research Lab
Abstract:
Cyclic testing allows the collection of basic mechanical information needed to assess a material’s response in cyclic loading. Traditionally, this information has been collected through conventional standardized cyclic tension-compression tests. The conventional testing is costly both in terms of time and money it requires. The conventional testing methods also require large sample volumes, which may not be always available. The drawbacks of conventional test protocols become particularly evident in materials innovation efforts. This is because of the extremely high number of combinations of possible material compositions and thermo-mechanical processing histories evaluated in such efforts. More specifically, the material candidate pool is practically endless, thus, conventional testing would take an inordinate amount of time. The objective of this proposal is to develop high-throughput protocols requiring only small sample volumes to rapidly characterize the cyclic behaviors of metals. Specifically, novel spherical micro- and nanoindentation protocols will be developed and demonstrated on samples of titanium and Inconel alloys. These case studies will provide critical evaluation of the effectiveness of the new methods in capturing the differences in the cyclic responses of the different material samples. The proposed work will speed up materials design, innovation, and characterization of advanced materials. The following research questions will be addressed within this dissertation research:
- Can microindentation and nanoindentation serve as viable high-throughput methods for rapidly assessing cyclic behaviors of metals?
- What intrinsic material properties can be extracted from the cyclic indentation tests to effectively make comparisons across alloys?
- Can a relationship or correlation between the results from the high-throughput cyclic indentation protocols and traditional cyclic protocols be made?
Groups
Status
- Workflow Status: Published
- Created By: Tatianna Richardson
- Created: 08/11/2021
- Modified By: Tatianna Richardson
- Modified: 08/11/2021
Categories
Keywords
Target Audience