Tool for Blade Stress Estimation during Multiple Simultaneous Vibratory Mode Responses

Award Information
Agency:
Department of Defense
Branch
Air Force
Amount:
$99,274.00
Award Year:
2012
Program:
STTR
Phase:
Phase I
Contract:
FA9550-12-C-0047
Award Id:
n/a
Agency Tracking Number:
F11B-T22-0116
Solicitation Year:
2011
Solicitation Topic Code:
AF11-BT22
Solicitation Number:
2011.B
Small Business Information
2780 Skypark Drive, Suite 400, Torrance, CA, -
Hubzone Owned:
N
Minority Owned:
Y
Woman Owned:
N
Duns:
106823607
Principal Investigator:
Adarsh Pun
Principal Investigator
(310) 626-8653
apun@nextgenaero.com
Business Contact:
Zoltan Feher
Manager, Contracts and Pricing
(310) 626-8384
zfeher@nextgenaero.com
Research Institute:
San Diego State University
Eugene Stein
5500 Campanile Drive
San Diego, CA, 92182-2182
(619) 594-8731
Nonprofit college or university
Abstract
ABSTRACT: NextGen Aeronautics, leveraging past experience in generating stress spectra from static and vibratory loads as well as knowledge of gas turbines, is proposing a method for estimating blade stresses from multiple vibratory loads in rotating systems in Phase I. Additionally, we will develop and easy-to-use software application to integrate stresses from multiple modes using a super-positioning principle. We will demonstrate technology on generic integrally bladed turbines and leverage commercial-of-the-shelf tools for modal analysis and use the modal stresses together with a forcing function to sum up stresses on discrete or all locations on a blade. Our team consists of experts in dynamics and vibration and has strong support from P & W for the technology transition phase. BENEFIT: The technology finally developed in this program will directly benefit safe operation of gas turbines in the aviation industry as well as industrial steam and wind turbines, through better estimation of stresses generated from multiple vibratory loads. Costly re-designs from pre-mature failures in ground and flight test programs will be avoided and will aid in intelligent inspection intervals for safe operation of rotating systems.

* information listed above is at the time of submission.

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