ZT IMAGING FOR LAYERED THIN WALL STRUCTURES

Award Information
Agency:
Department of Defense
Branch
Air Force
Amount:
$49,426.00
Award Year:
1987
Program:
SBIR
Phase:
Phase I
Contract:
n/a
Agency Tracking Number:
5476
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
American Science & Engineering
Fort Washington, Cambridge, MA, 02139
Hubzone Owned:
N
Socially and Economically Disadvantaged:
N
Woman Owned:
N
Duns:
n/a
Principal Investigator:
DR PAUL J BJORKHOLM
(617) 868-1600
Business Contact:
() -
Research Institution:
n/a
Abstract
CARBON-CARBON AND FILAMENT WOUND COMPOSTIES NOT ONLY OFFER UNIQUE MECHANICAL PROPERTIES AND CAPABILITIES, BUT ARE DIFFICULT TO INSPECT AND DETERMINE MANUFACTURING INTEGRITY. DEFECTS OF INTEREST ARE VARIATIONS IN DENSITY AND CHEMICAL SPECIES, VOIDS, AND CRACKS. A NEW IMAGING TECHNOLOGY, ZT, HAS BEEN DEVELOPED WHICH IS INTRINSICALLY TOMOGRAPHIC, IMAGES IN PLANES PARALLEL TO THE OBJECT SURFACE, AND IS SENSITIVE TO CHEMICAL SPECIES AND DENSITY. IT IS THE OPTIMAL IMAGING TECHNIQUE FOR THE DEFECTS AND MATERIALS OF INTEREST HERE. PHASE I WILL CONSIST OF UTILIZING EXISTING EQUIPMENT TO SCAN PARTS SUPPLIED BY THE AIR FORCE ROCKET PROPULSION LABORATORY (AFRPL) IN ORDER TO DEMONSTRATE THE FEASIBILITY AND SENSITIVITY. IT IS EXPECTED THAT THE PARTS SUPPLIED WILL HAVE THE FOLLOWING DEFECTS AT A MINIMUM: DELAMINATIONS (1CM X 1CM FRONTAL AREAS, 1000, 500, 250, AND 125 MICRONS THICK), DENSITY VARIATIONS (1CM X 1CM FRONTAL AREA, 10, 5, 2, 1, AND 0.5%), AND POROSITIES (HOLE SIZES TO VARY AND THEIR DENSITY TO VARY TO CAUSE SIMILAR OVERALL DENSITY VARIATIONS AS INDICATED FOR THE DENSITY VARIATION SAMPLES). IN ADDITION PHASE I WILL INCLUDE AN ENGINEERING STUDY THAT WILL IDENTIFY MODIFICATIONS TO OUR STANDARD SYSTEMS THAT ARE REQUIRED TO OPTIMIZE THE ZT TECHNIQUE FOR THE PROBLEM OF INTERTEST. PHASE II WILL PRODUCE A PROTOTYPE SYSTEM THAT COULD BE USED IN A LABORATORY SETTING.

* information listed above is at the time of submission.

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