Skip to Main Content
Frequently Asked Questions
Submit an ETD
Global Search Box
Need Help?
Keyword Search
Participating Institutions
Advanced Search
School Logo
Files
File List
case1190750537.pdf (3.26 MB)
ETD Abstract Container
Abstract Header
High Strain-Rate Compression Behavior of a Zr-based Bulk Metallic Glass
Author Info
Sunny, George Padayatil
Permalink:
http://rave.ohiolink.edu/etdc/view?acc_num=case1190750537
Abstract Details
Year and Degree
2008, Master of Sciences (Engineering), Case Western Reserve University, Mechanical Engineering.
Abstract
High strain-rate tests were performed on LM-1 using a Split-Hopkinson Pressure Bar (SHPB) to investigate effects of L/D ratio and annealing. An ultra high-speed camera was also employed to record the deformation and failure processes of LM-1. The as-cast (i.e. amorphous) specimens exhibited a reduction in peak stress with reduced L/D ratio and failure at the specimen-insert interface, indicative of stress concentrations due to the difference in the specimen and insert diameters, while the annealed specimens exhibited extensive fragmentation. The stress concentrations in the specimen motivated simulations using LS-DYNA to design new inserts. A tapered insert design was chosen to reduce stress concentrations, and as-cast and annealed specimens were tested. Strain gages were also attached to as-cast specimens to determine the elastic stress-strain response. As-cast and annealed specimens with tapered inserts exhibit failure in the gage section, while the strain gages recorded no reduction in peak stress with reduced L/D.
Committee
Vikas Prakash (Committee Co-Chair)
John Lewandowski (Committee Co-Chair)
Dwight Davy (Other)
Keywords
Metallic glass
;
High strain-rate compression
;
Mechanical testing
;
Finite element model
;
Recommended Citations
Refworks
EndNote
RIS
Mendeley
Citations
Sunny, G. P. (2008).
High Strain-Rate Compression Behavior of a Zr-based Bulk Metallic Glass
[Master's thesis, Case Western Reserve University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=case1190750537
APA Style (7th edition)
Sunny, George.
High Strain-Rate Compression Behavior of a Zr-based Bulk Metallic Glass.
2008. Case Western Reserve University, Master's thesis.
OhioLINK Electronic Theses and Dissertations Center
, http://rave.ohiolink.edu/etdc/view?acc_num=case1190750537.
MLA Style (8th edition)
Sunny, George. "High Strain-Rate Compression Behavior of a Zr-based Bulk Metallic Glass." Master's thesis, Case Western Reserve University, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=case1190750537
Chicago Manual of Style (17th edition)
Abstract Footer
Document number:
case1190750537
Download Count:
2,030
Copyright Info
© 2007, all rights reserved.
This open access ETD is published by Case Western Reserve University School of Graduate Studies and OhioLINK.