Accession Number : ADD014761

Title :   Phase Cancellation Enhancement of Ultrasonic Evaluation of Metal-to-Elastomer Bonding.

Descriptive Note : Patent Application, Filed 17 May 90,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Gammell, Paul M

Report Date : 17 May 1990

Pagination or Media Count : 20

Abstract : This patent application discloses an invention whereby acoustical radiation is generated and applied to the bonding interface between a radiation transmissive material and a radiation attenuating material to determine adhesion quality by extraction of data from a response signal produced by echoes reflected from both the interface and the radiation entry surface on the radiation transmissive material exposed to the generated acoustical radiation. Signal phase cancellation between the echoes from the entry surface and bonding interface produce a signal signature from which the quality of bonding is evaluated. By partial attenuation of the echo from the entry surface, the signature is maximized.

Descriptors :   ACOUSTICS, ADHESION, ATTENUATION, BONDING, CANCELLATION, INTERFACES, MATERIALS, OPTIMIZATION, PATENT APPLICATIONS, QUALITY, RADIATION, RESPONSE, SIGNALS, SIGNATURES, TEST AND EVALUATION, ULTRASONICS

Subject Categories : Mfg & Industrial Eng & Control of Product Sys

Distribution Statement : APPROVED FOR PUBLIC RELEASE