OREGON STATE UNIVERSITY
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Principal Investigator
Ph.D.: Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA, 2015
email: ali.tabei@oregnstate.edu | 
Ph.D. Student
M.S.: Mechanical Engineering, Chamran University, Ahvaz, 2018
email: sobhanis@oregonstate.edu
Bio: I was born and raised in the very hot and sunny city of Ahvaz, located in the southwest of Iran. I received my BSc and MSc in Solid and Applied Mechanics from Shahid Chamran University of Ahvaz, Iran. My research interests include solid mechanics, FEM modeling, and applied mechanics.
Research Focus: My research is on modeling HIP (Hot Isostatic Pressing) processes using finite element and discrete element methods. Hot Isostatic Pressing (HIP) is the simultaneous application of high temperature and pressure to metals and other materials for a specified amount of time in order to improve their mechanical properties. In the HIP unit a high temperature furnace is enclosed in a pressure vessel. The temperature, pressure and process time are all precisely controlled to achieve the optimum material properties. Hot Isostatic Pressing is a well-established process for the improvement of a wide variety of materials such as titanium, steel, aluminum and superalloys. Using this process, voids within a casting can be reduced or eliminated and encapsulated powders can be consolidated to create fully dense materials. Also, dissimilar materials can be bonded together to manufacture unique, cost effective components.
M.S. Student
B.S.: Mechanical Engineering, Oregon State University, 2018
email: nelsodal@oregonstate.edu
Bio: I was born in Roseburg, Oregon and have spent my entire life living in Oregon. As a lifelong Oregonian I have a great appreciation for the outdoors and will frequently spend my freetime hiking or camping with my wife. I started my schooling by studying architecture but quickly found that it wasn't quite the right fit for me so examining the the aspects that drew me to architecture initially (creative problem solving, spacial reasoning, functionality) I decided to study Mechanical Engineering at Oregon State University where I became heavily involved in the aerospace programs.
Research Focus: My research is centered around the Finite Element and Analytical modeling of Deep Rolling, a cold working process in which a hydrolically pressurized ball is rolled over a materials surface to compress and smooth the top layer of material. This process typically leaves a zone of compressive residual stresses that are benefitial to the fatigue life of the material. In my research I will attempt to correlate 3-dimensional and 2-dimensional modelling to establish less resource intense modeling options as well as using the results of the simulations and experimental data gathered from literature to create an analytical model that can be used to estimate stresses given material and process properties.
M.S. Student
B.S.: Mechanical Engineering, Whan University of Technology, 2016
email: leiyu@oregonstate.edu
B.S. Student
email: ballst@oregonstate.edu