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Rotating electric field sensor for nondestructive evaluation of nonmetallic engineered components

Novak, J.L.

Improvements in performance of products with nonmetallic engineered materials are obtained at the cost of increased complexity of product design, manufacture, and maintenance. NDE (nondestructive evaluation) techniques have been developed for verifying design models, identifying manufacturing flaws, and assessing service-related damage. This project involved developing a new NDE method that provides additional information; the sensor measures changes in an imposed electric field to obtain electrical impedance images of a component. Effective sensing volume and orientation of imposed electric field may be varied to optimize field interaction with the internal structure of a part. These interactions are combined into multidimensional impedance images that reflect variations in the mechanical geometry and internal structure of a part. Location of an impedance anomaly may be correlated with the location of a flaw.

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Cable Development

O'Canna, Myra L.

For feasibility studies of the Rumpler program. Five conductors (#26 ga. stranded) and one co-axial cable are required. The cable was to be as flexible as possible and could incorporate a braid or shield to increase the tensile strength.

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Giant Squid Hazard

O'Canna, Myra L.

Fallout predictions of fission products resulting from a hypothetical nuclear test (for possible resumption of above ground testing). Giant Squid test was never conducted.

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Nuclear Test Ban and Testing Debris

O'Canna, Myra L.

Quotes the Cook to Reeves TWX which discussed the understanding of the treaty ending nuclear tests, need for taking into account meteorology in connection with underground explosions, and a statement of successful stemming of tests.

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Thunder Hole Shock Photography

O'Canna, Myra L.

A response to two memos-- concerns about inexperience in the generation and photographic study of extremely strong shocks which were of interest to the Bagpipe-ARES programs made it difficult to specify just what unique date was expected.

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Underground Testing Requirements

O'Canna, Myra L.

Mr. Cook states his interest in the specific technical objectives of the planned horizontal asymmetry shot, the arguments for placing it above the high yield scaling test, and of the apparent interest in E. Teller`s interest.

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Results 100901–100950 of 101,000
Results 100901–100950 of 101,000
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