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ELECTROMAGNETIC GAGE TECHNIQUES FOR DYNAMIC TENSILE FRACTURE

Award Information
Agency: National Science Foundation
Branch: N/A
Contract: N/A
Agency Tracking Number: 5370
Amount: $40,000.00
Phase: Phase I
Program: SBIR
Solicitation Topic Code: N/A
Solicitation Number: N/A
Timeline
Solicitation Year: N/A
Award Year: 1987
Award Start Date (Proposal Award Date): N/A
Award End Date (Contract End Date): N/A
Small Business Information
P.o. Box 1173
Steamboat Springs, CO 80477
United States
DUNS: N/A
HUBZone Owned: No
Woman Owned: No
Socially and Economically Disadvantaged: No
Principal Investigator
 () -
Business Contact
 Chapman Young
Title: Investigator
Phone: () -
Research Institution
N/A
Abstract

ELECTROMAGNETIC GAGE TECHNIQUES ARE IDEALLY SUITED TO MEASURING THE DYNAMIC TENSILE FRACTURE OF A BROAD VARIETY OFMATERIALS. AS ELECTROMAGNETIC SENSING ELEMENTS CAN BE CONSTRUCTED OF ANY CONDUCTING MATERIAL AND ARE NOT AFFECTED BY MICRO-DEFORMATION THEY CAN BE READILY EMBEDDED IN CERAMICS, PLASTICS, COMPOSITES, CONCRETE, ROCKS AND OTHER NON-CONDUCTING MATERIALS FOR MAKING PRECISE IN-MATERIAL MEASUREMENTS. BECAUSE THE TECHNIQUES ARE BASED UPON FARADAY'S LAW OF INDUCTION, IN-MATERIAL VELOCITIES AND DISPLACEMENTS CAN BE DIRECTLY COMPUTED FROM KNOWN GAGE GEOMETRIES AND MAGNETIC FIELD STRENGTH. WHILE GAGE FUNCTIONING IS QUITE SIMPLE IN THEORY, CONSIDERABLE EFFORT MUST BE DEVOTED TO GAGE EMPLACEMENT TECHNIQUES AND DATA REDUCTION METHODS. IT IS PROPOSED TO DEVELOP AND DEMONSTRATE GAGE PLACEMENT TECHNIQUES AND DIGITAL DATA ACQUISITION, REDUCTION AND INTERPRETATION METHODS SUITABLE FOR MAKING DYNAMIC TENSILE FRACTURE MEASUREMENTS. THE PROPOSED EFFORTS WILL FOCUS UPON DYNAMIC TENSILE FRACTURE INA SPECIALIZED TENSILE HOPKINSON BAR ARRANGEMENT, BUT THE TECHNIQUES SHOULD BE APPLICABLE TO A BROAD RANGE OF DYNAMIC TESTS. THE METHODS WOULD ALSO BE APPLICABLE TO THE STUDY OFUNSTABLE DYNAMIC FRACTURE IN STATICALLY LOADED TESTS.

* Information listed above is at the time of submission. *

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