A Physics-based Model for the Prediction of Laser Shock-Induced Spallation

Award Information
Agency: Department of Defense
Branch: Air Force
Contract: FA8650-08-C-5202
Agency Tracking Number: F071-125-0363
Amount: $749,963.00
Phase: Phase II
Program: SBIR
Awards Year: 2008
Solitcitation Year: 2007
Solitcitation Topic Code: AF071-125
Solitcitation Number: 2007.1
Small Business Information
UES, INC.
4401 Dayton-Xenia Road, Dayton, OH, 45432
Duns: 074689217
Hubzone Owned: N
Woman Owned: Y
Socially and Economically Disadvantaged: N
Principal Investigator
 Youhai Wen
 Research Scientist
 (937) 426-6900
 ywen@ues.com
Business Contact
 Bryce Skinn
Title: Business Relations Manage
Phone: (937) 426-6900
Email: bskinn@ues.com
Research Institution
N/A
Abstract
UES, Inc., in collaboration with the University of Cincinnati, proposes to extend the science and application base of the laser shock-induced spallation modeling tool from coupons to real-life work pieces. The specific implementation involves three steps. Firstly, we plan to incorporate the effects of material structure into the material and spallation models developed in Phase I. Secondly, a comprehensive experimental plan will be developed and executed for the purpose of validation of the model. Specifically, we propose to validate the pressure model and effect of the LSP pressure and specimen dimensions and geometry on the spallation and residual stress evolution by designing and implementing a set of experiments, coupled with nondestructive and metallurgical evaluation, involving both coupons and a component (namely, airfoil). Finally, we propose to demonstrate the commercial feasibility of the developed modeling approach. We anticipate the delivery of the model in the form of a user-friendly modeling package that can be used with the commercial finite element modeling software such as ABAQUS and LS-DYNA3D.

* information listed above is at the time of submission.

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