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Innovations in Designing Damage Tolerant Rotorcraft Components by Interface Tailoring

Award Information
Agency: Department of Defense
Branch: Navy
Contract: N68335-19-C-0412
Agency Tracking Number: N19A-003-0101
Amount: $139,994.00
Phase: Phase I
Program: STTR
Solicitation Topic Code: N19A-T003
Solicitation Number: 19.A
Solicitation Year: 2019
Award Year: 2019
Award Start Date (Proposal Award Date): 2019-05-31
Award End Date (Contract End Date): 2019-12-06
Small Business Information
1 Airport Place, Suite 1
Princeton, NJ 08540
United States
DUNS: 610056405
HUBZone Owned: No
Woman Owned: No
Socially and Economically Disadvantaged: No
Principal Investigator
 Dr. Jim Lua Dr. Jim Lua
 Senior Principat Scientist
 (609) 356-5115
Business Contact
 Jim Lua
Phone: (860) 398-5620
Research Institution
 University of Wisconsin-Madison
 Prof. Pavana Prabhakar Prof. Pavana Prabhakar
University of Wisconsin-Madison Dept. of Civil & Environmental Engineering
Madison, WI 53706
United States

 (608) 265-7384
 Nonprofit College or University

Global Engineering and Materials, Inc. (GEM) along with its team member, the University of Wisconsin-Madison (UW-M), propose to develop printed polymer reinforcement via additive manufacturing to provide patterns at the interlaminar regions in traditional prepreg composites with the goal of improving their interlaminar properties under mixed mode loading. Two key components will be performed under the Phase I study: 1) fabrication and testing of interface modified laminate composite coupons under static loading; and 2) a micro-macro simulation model for performance evaluation of composite laminates with enhanced ply interfaces. The proposed technique is particularly attractive for imparting spatially varying interlaminar reinforcements through computer aided design for mitigating damage at the interlaminar regions under diverse loading conditions. Processing, fabrication, and testing will be performed to explore fused deposition modeling for printed reinforcements with various patterns to resist interface failure under mixed mode loading. The validated micro-macro modeling approach along with the progressive damage description will be used to characterize the undulated delamination growth with additional energy dissipation. This combined experimental and numerical study will construct an optimal design framework to achieve performance informed interface tailoring. A suite of demonstration studies will be performed using coupon testing data.

* Information listed above is at the time of submission. *

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