PENC Eastern Carolina Chapter Presents:


Annual ECU Engineering Meeting on the ECU Campus


Thursday, February 23, 2017
6:00 pm – 8:00 pm – Note that this is an evening meeting

East Carolina University Science and Technology Building, Greenville, NC – note new location

Let us know if you need to know how to get there or where to park.

Members: $ 20.00
Non-Member: $ 20.00, No Cost for Students and that includes a meal!

Program Overview:    

Characterization of Long-Range Acoustic Propagation in the Littoral Environment        (How soundwaves travel by the ocean)


Acoustic propagation over long distances is affected by many conditions including atmospheric properties, topography, vegetation, source characteristics, and frequency content. This work presents a measurement system designed to capture both acoustic and atmospheric information with sufficient resolution in time and space to inform the development of an improved model of acoustic propagation. The model is a Crank-Nicolson Parabolic Equation implementation that allows for input of varying sound speed profiles, source profiles, and propagation surface profiles.  At multiple locations along the propagation path, UAV-mounted sensors record the temperature, pressure, and relative humidity, along with altitude and GPS position to characterize the air column in the propagation path. A mast-mounted weather station at the measurement array provides a record of wind speed and direction at ground level. The measured transmission loss is compared to results from the numerical simulation.



Dr. Teresa J. Ryan – Professor, Department of Engineering, East Carolina University

Dr. Ryan earned her BS in Mechanical Engineering in 1996 from Georgia Tech. She worked as a research engineer in noninvasive medical device development before earning her MS and Ph.D in Mechanical Engineering from The Catholic University of America. Her graduate work focused on acoustics and the dynamics of complex structures. In particular, her focus included the development of a laser Doppler vibrometer system for use in a variety of applications, including characterization of percussion instruments, improvised explosive devices (IED) and MEMS resonators used for ultrasensitive mass detection.  Dr. Ryan joined the Engineering faculty at East Carolina University in 2013, where she continues her research in acoustics, complex systems, and engineering education.

Dr. Ryan teaches a variety of undergraduate courses including dynamics, vibrations, and mechanics of materials with a focus on technical communication skills.


PDHs:  1

(Note: While PENC offers Professional Development Credit for this program, it is up to each Professional Engineer to determine if the content is relevant to his/her individual practice and suitable for his/her continuing education.)

RSVP: Note New Contact
By Tuesday, February 21 to: Todd Tripp 
Office Phone: 252-758-3746

Special Note:

Members, Guests, and Students are invited to attend our annual meeting hosted by ECU Department of Engineering.  This is your chance to be informed on what is happening at the ECU Department of Engineering and get to know some of leadership, professors, and students at ECU.  We will first meet in the atrium area of the Science and Technology Building for dinner and a short meeting.  We will then move to a classroom for the presentation by Dr. Ryan.  Dinner will be the great sandwiches, salad, and cookies from Mike’s Deli.

PENC’s Eastern Carolina Chapter meets monthly, usually in Greenville. Upcoming meetings include:


Watch for information about meetings in 2017


PENC’s Eastern Carolina Chapter comprises the following counties: Bertie, Beaufort, Camden, Carteret, Chowan, Craven, Currituck, Dare, Edgecombe, Gates, Greene, Halifax, Hertford, Hyde, Jones, Lenoir, Martin, Nash, Northampton, Pamlico, Pasquotank, Perquimans, Pitt, Tyrrell, Washington, Wayne, Wilson




Eastern Carolina Chapter Officers

Luke Fenton, PE
Winterville, NC

Carl Bonner, PE
Winterville, NC 252-353-1600

Milton Eshelman, PE
The Roberts Company
Winterville, NC

Clifton Game, PE 

Past President
Caleb Wright, PE
Industry Standard Engineers & Consultants, PLLC
New Bern, NC