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DETERMINING FIBER VOLUME FRACTION AND POROSITY IN ORTHOTROPIC COMPOSITE…

Award Information

Agency:
Department of Defense
Branch:
Army
Award ID:
5594
Program Year/Program:
1987 / SBIR
Agency Tracking Number:
5594
Solicitation Year:
N/A
Solicitation Topic Code:
N/A
Solicitation Number:
N/A
Small Business Information
Bergey Windpower Co Inc
2001 Priestley Ave Norman, OK 73069
View profile »
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No
 
Phase 1
Fiscal Year: 1987
Title: DETERMINING FIBER VOLUME FRACTION AND POROSITY IN ORTHOTROPIC COMPOSITE LAMINATES
Agency / Branch: DOD / ARMY
Contract: N/A
Award Amount: $48,776.00
 

Abstract:

ULTRASONIC NONDESTRUCTIVE TESTING HAS BECOME THE METHOD OF CHOICE FOR THE QUALITY ASSURANCE OF ADVANCED COMPOSITE MATERIALS. THE PROPOSED RESEARCH PROGRAM COVERS THE DEVELOPMENT OF A COMPUTER-BASED NDT METHOD FOR DETERMINING LOCAL FIBER VOLUME FRACTION AND RESIN POROSITY IN PRACTICAL LAMINATED COMPOSITES. THE COMPUTER ALGORITHMS WILL BE BASED ON EARLIER STUDIES THAT HAVE BEEN SUCCESSFUL FOR UNIDIRECTIONALLY REINFORCED COMPOSITES. THEY DEPEND ON SIMULTANEOUS MEASUREMENTS OF TWO ULTRASONIC WAVE VELOCITIES USING IMMERSION TRANSDUCERS. THE SPECIFIC OBJECTIVES OF THE PHASE I STUDY ARE TO DEVELOP A DETAILEDMODEL FOR WAVE PROPAGATION AT OBLIQUE INCIDENCE ANGLES, CHECK THE ANALYTIC MODEL EXPERIMENTALLY, AND MODIFY EXISTING ALGORITHMS FOR FIBER FRACTION AND POROSITY DETERMINATION IN COMPLEX LAMINATES. ADDITIONAL GOALS INCLUDE THE DESIGN AND TESTING OFFIXTURES TO HOLD THE REQUIRED TRANSDUCER ASSEMBLIES AND THE TESTING OF PRACTICAL LAYUPS (WITH SHAPE AND LAMINATION VARIATIONS) TO VERIFY THE PROCEDURE.

Principal Investigator:

Karl h bergey
4053644212

Business Contact:

Small Business Information at Submission:

Bergey Windpower Co Inc
2001 Priestley Ave Norman, OK 73069

EIN/Tax ID:
DUNS: N/A
Number of Employees:
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No