Evaluation of Composite Joints in General Aviation Structures

Award Information
Agency:
Department of Transportation
Branch
n/a
Amount:
$288,300.00
Award Year:
2002
Program:
SBIR
Phase:
Phase II
Contract:
DTRS57-03-C-10013
Agency Tracking Number:
DTRS57-03-C-10013
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
Materials Sciences Corporation
500 Office Center Drive, Suite 250, Fort Washington, PA, 19034
Hubzone Owned:
N
Socially and Economically Disadvantaged:
N
Woman Owned:
N
Duns:
n/a
Principal Investigator:
Gerald Flanagan
Technical Director
(215) 542-8400
Business Contact:
() -
Research Institution:
n/a
Abstract
During the Phase I program, MSC demonstrated a powerful new software tool designed for the analysis of bonded joints in General Aviation (GA) aircraft. The tool can handle the complex geometry and boundary conditions found in typical joints, and has been shown to be exceptionally accurate. An easy-to-use front end to the code was also demonstrated. In addition, Materials Sciences Corporation (MSC) proposed new approaches to understanding the mechanics of adhesive failure as a function of adhesive thickness. GA aircraft sometimes use thicker adhesive than would be recommended for optimum strength. A model based on nonlocal damage mechanics was developed that appears to explain the observed test data with a minimum of empirical constants. The Phase II program is intended to combine improved adhesive mechanics models with the analytic code, and to bring the code to maturity in preparation for release. In addition, validation data will be generated using typical joints as produced by a GA manufacturer.

* information listed above is at the time of submission.

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