Janet Gbur, a fourth-year PhD student in the Department of Materials Science and Engineering, placed first in the Student Presentation Competition sponsored by the ASTM Committee E08 on Fatigue and Fracture held during ASTM Committee Week in New Orleans, Louisiana in November. She is pictured above with advisor, Professor John Lewandowski (left) and Chair, Professor James McGuffin-Cawley (right).
 
Janet was presented with the M.R. 'Mitch' Mitchell Best Student Presentation Award and a monetary award of $200. The event was open to graduate and undergraduate students working in the area of fatigue and fracture mechanics.


Her talk, "Review: Fatigue and Fracture of Wires/Strands/Cables in Biomedical Applications," was the result of a three-year effort with advisor John Lewandowski, Arthur P. Armington Professor of Engineering II in the Department of Materials Science and Engineering, collecting fatigue data for wire-based systems used in biomedical devices. She is an active member of E08 and Committee E28 on Mechanical Testing and was also a recipient of the 2012 ASTM International Project Grant for her work on "Mechanical Characterization of 316 LVM Wires."

 

Mohsen Seifi, doctoral researcher in the Department of Materials Science and Engineering, has been awarded one of three 2014 American Society for Testing and Materials International Graduate Scholarships. He was recently recognized at the ASTM Fall Meeting in New Orleans, where he officially accepted the award from James Thomas, President of ASTM International.
 
Established in 2009 to coincide with ASTM’s Year of the Professor initiative, the ASTM International Graduate Scholarship rewards graduate students who have demonstrated high levels of interest in or involvement with ASTM International standards. The objective of the ASTM scholarship program is to enhance a student’s knowledge, understanding and application of ASTM International and its standards. The organization awards up to four $10,000 scholarships each year.

 

Members of the Graduate Materials Society took a moment to interact with alumni and faculty at the Case Alumni Association’s reception during MS&T in Pittsburgh, Pennsylvania. Pictured (left to right) are Amirali Zangiabadi, Christian Dalton, Matt Dahar, Azin Akbari, Janet Gbur, Henry Neilson, Maryam Zahiri Azar, and Mohsen Seifi.

 

Matthew Dahar, Mohsen Seifi, Bernard Bewlay and Prof. Lewandowski latest paper, titled “Effects of test orientation on fracture and fatigue crack growth behavior of third generation as-cast Ti–48Al–2Nb–2Cr,” has been published in Intermetallics Journal.

From the abstract: “The effects of changes in test orientation and load ratio on the room temperature fracture and fatigue crack growth behavior of as-cast Ti-48Al-2Nb-2Cr titanium aluminide was investigated to determine the presence of any anisotropy in mechanical properties. As-cast samples were tested in the longitudinal and transverse directions to the casting direction at room temperature in air. Load ratios ranging from R= 0.1 to R= 0.9 were used in the fatigue tests in order to determine its effects on the threshold for fatigue cracking, the Paris law slope, and fatigue crack instability toughness, Kc, in addition to deter- mining both notched and fatigue-precracked values for toughness. Optical metallography and SEM fractography were used to document the effects of orientation on the fracture path and morphology. Significant effects of changes in load ratio were obtained on the fatigue threshold and Paris law slope, while its effects on Kc and the effects of sample orientation were found to be minimal. These are rationalized by considering microstructural effects on the properties measured and are compared to similar materials processed via different techniques.”

The published paper can be accessed here:

M.S. Dahar, S.M. Seifi, B.P. Bewlay, J.J. Lewandowski, Intermetallics 57 (2015) 73.