Office: Doolan Hall 207
Omar S. Es-Said is a Professor of Mechanical Engineering in the Mechanical Engineering Dept., Loyola Marymount University, Los Angeles, CA. He teaches undergraduate courses in Materials Science and Engineering, Mechanics of Materials, Metallurgy and Processes, graduate courses in Theory of Elasticity, Fracture Mechanics and Materials Selection in Design. He also works with direct undergraduate student projects and graduate research. Dr. Es - Said was the Director of the LMU Graduate Program from 1986 to 1991, an Assistant Professor from 1985-1992, and an Associate Professor from 1992-1998. Dr. Es-Said graduated with a Ph.D in Metallurgical Engineering & Materials Science with a minor in Computer Science (Numerical Analysis) (Nov. 5 1985), University of Kentucky, Lexington, KY. He graduated with a B.S., Physics with a minor in Psychology (June 1976), The American University in Cairo, Cairo, Egypt.
University of Kentucky : Ph.D., Metallurgical Engineering & Materials Science; minor in Computer Science 1985
The American University in Cairo: M.S., Solid State Physics 1979
The American University in Cairo: B.Sc., Physics; minor in Psychology 1976
Areas of Expertise (13)
Industry Expertise (3)
Research Associate (professional)
Worked as a Research Associate in the Phillips Laboratory at the Edwards Air Force Base.
Received the SAE Teetor Educational Award.
Received the Engineering Professor of the Year Award from Tau Beta Pi.
Organization Committee for the Design and Production Conference
Associate Editor (professional)
Journal of Materials Engineering and Performance, 2008-present
The Society of Naval Architects and Marine Engineers, Elmer L. Hann Award
- ASME Transactions Journal of Mechanical Design
- SAE Transactions
- ASM Journal of Materials Engineering and Performance
- AIME James Douglas Medal Award Committee
Event Appearances (2)
3rd Asia Conference on Mechanical and Material Engineering (ACMME2015) Chengdu, China
Paper: Characterization of the effects of active filler-metal alloys in joining ceramic-to-ceramic and ceramic-to-metal materials
9th International Conference on Diffusion in Solids and Liquids Madrid, Spain
Tempered AISI 4340 steel was hydrogen charged and tested for impact energy. It was found that samples tempered above 468 °C (875 °F) and subjected to hydrogen charging exhibited lower impact energy values when compared to uncharged samples. No significant difference between charged and uncharged samples tempered below 468 °C (875 °F) was observed.
This study investigated actively brazing Alumina-to-Alumina with Ag-Cu-Ti as the filler metal system and Alumina-to-Copper with Cu-Ti-Co as the filler-metal system. The research was conducted on four samples, two of which were alumina brazed to alumina (Samples 1 & 2), and the other two were alumina brazed to copper (Samples 3 & 4).
The welding process yields a high concentration of nanoparticles loaded with hexavalent chromium (Cr(6+)), a known human carcinogen. Previous studies have demonstrated that using tetramethylsilane (TMS) as a shielding gas additive can significantly reduce the Cr(6+) concentration in welding fume particles. In this study, a novel insulated double shroud torch (IDST) was developed to further improve the reduction of airborne Cr(6+) concentration by separating the flows of the primary shielding gas and the TMS carrier gas.
Various thermo-mechanical processes were performed on a standard and a low oxygen content Ti-6Al-4V alloy. Testing was performed to determine whether it was possible to achieve a combination of tensile properties comparable to those of Ti-3Al-2.5V by means of cold working and annealing Ti-6Al-4V from a thickness of 0.671cm (0.264 in.) to that between 0.081 and 0.094cm (0.032-0.037 in.), which had never been carried out before.
The objective of this study is to determine the effect of solution treatment temperature, quenching media, and various machining sequences on the warpage behavior of aluminum 7249 alloy aged to T6 and T7′ tempers. Large extrusions of 7249 aluminum alloy with fins were cut into 108 “T” sections. The samples were solution-treated, aged, and machined.
Sheets of 2195 aluminum-lithium alloy were solution-treated at 507°C for 30min. One set was stretched to 3-5% in the 0°, 45°, and 90° angle with respect to the original rolling direction. Two other sets were rolled 6% reduction in thickness and 24% reduction in thickness in the 0°, 45°, and 90° angle with respect to the original rolling direction.