DEVELOPMENT OF COMPOSITE STRUCTURES WITH ENHANCED DAMAGE TOLERANCE

Award Information
Agency:
National Aeronautics and Space Administration
Branch
n/a
Amount:
$56,995.00
Award Year:
1988
Program:
SBIR
Phase:
Phase I
Contract:
n/a
Agency Tracking Number:
6669
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
Textile Technologies Inc
2800 Turnpike Dr, Hatboro, PA, 19040
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
n/a
Principal Investigator:
JANICE MAIDEN
() -
Business Contact:
() -
Research Institution:
n/a
Abstract
THE EVOLUTION OF THE AIRCRAFT INDUSTRY HAS BEEN CHARACTERIZED BY A STEADY GROWTH IN THE USE OF LIGHTWEIGHT MATERIALS STRONG ENOUGH TO WITHSTAND THE INCREASING DEMANDS PLACED ON TODAY'S HIGH PERFORMANCE AIRCRAFT. HOWEVER, THESE MATERIALS, SUCH AS GRAPHITE/EPOXY COMPOSITES, SUFFER SERIOUS COMPRESSION STRENGTH REDUCTIONS AS A RESULT OF IMPACT LOADS. FOR THAT REASON, AIRCRAFT DESIGNERS HAVE NOT BEEN ABLE TO USE THE FULL PERFORMANCE POTENTIAL OF COMPOSITEMATERIALS. THIS PROGRAM IS DESIGNED TO ADDRESS THE POSSIBLESOLUTION TO THIS PROBLEM THROUGH THE USE OF ADVANCED WEAVE DESIGNS THAT ALLOW FOR THE INTERLOCKING OF MULTILAYER FABRICS. THIS INTERLOCKING WILL REPRESENT A BALANCE BETWEEN OPTIMIZING THE IN-PLANE LOAD CARRYING CAPABILITY OF THE LAMINATE AND THE ABILITY TO WITHSTAND OUT-OF-THE-PLANE TENSILE LOADS INDUCED BY IMPACT. TWO LAMINAR INTERLOCK PANELS WILL BE WOVEN AND TESTED ALONG SIDE A STATE-OF-THE-ART LAMINATE. BY COMPARING TENSILE STRENGTHS, COMPRESSION STRENGTHS BOTH BEFORE AND AFTER IMPACT AS WELL AS COMPARING DAMAGE AREAS, IT WILL BE POSSIBLE TO ASSESS THE VALUE OF LAMINAR INTERLOCKING AS WELL AS TO ESTABLISH A BASELINE FOR DESIGNING THE MOST EFFICIENT LAMINAR INTERLOCK WEAVE.

* information listed above is at the time of submission.

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