Shape Memory Polymer Bladder Tooling

Award Information
Agency:
Department of Defense
Branch
Navy
Amount:
$749,147.00
Award Year:
2010
Program:
SBIR
Phase:
Phase II
Contract:
N68335-10-C-0030
Agency Tracking Number:
N081-030-0307
Solicitation Year:
2008
Solicitation Topic Code:
N08-030
Solicitation Number:
2008.1
Small Business Information
Cornerstone Research Group, Inc.
2750 Indian Ripple Road, Dayton, OH, 45440
Hubzone Owned:
N
Socially and Economically Disadvantaged:
N
Woman Owned:
N
Duns:
130020209
Principal Investigator:
Joel Everhart
Research Engineer
(937) 320-1877
everhartjj@crgrp.com
Business Contact:
Stephen Vining
VP Government Programs
(937) 320-1877
viningsd@crgrp.com
Research Institution:
n/a
Abstract
Cornerstone Research Group Inc. (CRG) proposes to demonstrate the benefits of shape memory polymer (SMP) bladder tooling for fabrication of a composite Navy rotorcraft part. CRG’s SMP bladder tooling reduces labor costs and manufacturing time for fabricating complex composite parts. Conventional silicone or latex bladders are not rigid enough to support composite lay-up before custom molding. This process is labor intensive, can produce seams, wrinkles and bridging, and often results in inaccurate part shapes. These drawbacks have led to the theory of an inflatable bladder core used as the mandrel, but conventional bladder cores lack the structural integrity required for accurate composite lay-up. SMP bladders operate both as rigid mandrels and inflatable bladder cores initially providing a rigid, durable surface for composite lay-up, then flexibility and inflatability when the part is formed against the interior of the final mold. Phase I demonstrated SMP bladder tooling feasibility for composite fabrication of a representative part. Phase II will focus on using SMP bladder tooling to fabricate a full-scale composite Navy rotorcraft part.

* information listed above is at the time of submission.

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