NONDESTRUCTIVE EVALUATION OF FINGER JOINT STRENGTH

Award Information
Agency:
Department of Agriculture
Amount:
$200,000.00
Program:
SBIR
Contract:
N/A
Solitcitation Year:
N/A
Solicitation Number:
N/A
Branch:
N/A
Award Year:
1991
Phase:
Phase II
Agency Tracking Number:
10962
Solicitation Topic Code:
N/A
Small Business Information
Engineering Data Management
4700 Mcmurray Avenue, Fort Collins, CO, 80525
Hubzone Owned:
N
Woman Owned:
N
Socially and Economically Disadvantaged:
N
Duns:
N/A
Principal Investigator
 Ronald W. Anthony
 () -
Business Contact
Phone: () -
Research Institution
N/A
Abstract
CURRENTLY, NO METHOD EXISTS WHICH CAN RELIABLY DETERMINE THE TENSILE STRENGTH OF AN ADHESIVE-BONDED FINGER JOINT USING NONDESTRUCTIVE PROCEDURES ONLY. THE USE OF ACOUSTO-ULTRASONIC NONDESTRUCTIVE EVALUATION WILL BE INVESTIGATED FOR THE FEASIBILITY OF PROVIDING STRESS WAVE PARAMETERS WHICH CAN BE CORRELATED WITH JOINT TENSILE STRENGTH TO DEVELOP PREDICTIVE EQUATIONS. THE PROCEDURE WILL FOCUS ON DELIVERING BROADBAND FREQUENCY PULSES ACROSS THE FINGER JOINT AND CONDUCTING TIME SERIES AND SPECTRAL ANALYSIS ON THE RESULTING STRESS WAVE. STRESS WAVE PARAMETERS WILL BE CORRELATED TO THE RESULTS OF DESTRUCTIVE TENSION TESTS USING LINEAR AND NONLINEAR REGRESSION TECHNIQUES TO DEVELOP A MATHEMATICAL MODEL FOR PREDICTING INDIVIDUAL FINGER JOINT STRENGTH. THE FEASIBILITY OF THE RESULTING MODEL WILL BE VERIFIED ON AN INDEPENDENT SET OF DATA. DEVELOPMENT OF AN ACOUSTO-ULTRASONIC NONDESTRUCTIVE EVALUATION PROCEDURE FOR FINGER JOINT STRENGTH IN STRUCTURALWOOD MEMBERS WILL PROVIDE FOR CONFIDENCE IN PRODUCT PERFORMANCE THROUGH IMPROVED QUALITY ASSURANCE PROGRAMS.

* information listed above is at the time of submission.

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