Senthil Vel: Power-Law Creep Toolbox

UMaine Alert

Posted: April 19, 2024 - 1:32 PM

At approximately 9:24 a.m. on Friday, April 19, a University of Maine graduate student was struck by a university vehicle on Long Road at the University of Maine campus in Orono. The student reports that they are at a local hospital with minor injuries.

Emergency services, including the Orono Fire Department, University Volunteer Ambulance Corps, University of Maine Police Department, Orono Police Department and Penobscot County Sheriff’s Office responded to the scene.

The university vehicle involved in the incident was a Chevrolet Express van. It was being operated by a university employee.

Counseling services and support are available for students, faculty or staff who may have been affected. The Counseling Center can be reached at 207-581-1392 and the Dean of Students Office can be reached at 207-581-1406.

The scene has been cleared and Long Road is now accessible. An investigation is being conducted by the University of Maine Police Department with assistance from the Penobscot County Sheriff’s Office Crash Reconstruction Unit. Any witnesses to the incident are encouraged to contact Lt. Noel Santiago at noel.santiago@maine.edu.

The GUI software is a standalone interface for the analysis of nonlinear creep in polyphase aggregates using Asymptotic Expansion Homogenization (AEH). The AEH method, which uses a finite element mesh, provides accurate results since it explicitly accounts for the morphology and interaction of phases. The user need only provide an image of the sample and the phase power law parameters in axial form. The package contains a Matlab-based graphical user interface (GUI) which has been designed for ease of use and efficiency. Post-analysis options allow the user to plot the bulk flow relations for the aggregate in either linear and log₁₀ space, as well as visualize local fluctuations in fields such as stress, strain rate and viscosity via contour plots. Results can be exported with publication quality by using built-in Matlab functions. A built-in tutorial in included in the GUI software.

The GUI package is the result of a joint effort between the Mechanical Engineering Department (Alden Cook and Senthil Vel) and the School of Earth and Climate Sciences (Chris Gerbi and Scott Johnson) at the University of Maine. The coding was done in Matlab and C by Alden Cook.

Please email questions or comments to alden.cook@maine.edu

Acknowledgements:

This work was supported by the U.S. National Science Foundation through grants
EAR-1015349, EAR-1118786, EAR-1150438 and EAR-1347087.

Screenshots:

Download package:

32-bit version for Windows (400 MB zip file)

64-bit version for Windows (431 MB zip file)

Installation:

Instructions (pdf)