Ultrasonic Methods For Nondestructive Evaluation Of Ceramic Coating

Download this report (PDF, 1.78 MB, 52 pages)
Report Number: WADD TR 61-91 Part 2
Author(s): Feith, K. E., Lawrie, W. E.
Corporate Author(s): Armour Research Foundation
Laboratory: Directorate of Materials and Processes
Date of Publication: 1963-02
Pages: 52
Contract: AF 33(616)-6396
DoD Project: 7360
DoD Task: 736002
Identifier: AD0401658
AD Number: AD-401 658

This report describes investigations into the use of ultrasonic techniques to determine the strength and integrity of ceramic-metal bonds. An acoustic image converter system was used successfully to obtain a television type display of 1/32 inch diameter laminar defects in a zirconium oxide-inconel bond. The measured defect thickness varied between 300 and 500 microinches or about a factor of three greater than the average large grain in the coating material. Schlieren optical and acoustic lens techniques were used to visually investigate detailed properties of ultrasonic fields and the interaction of ultrasonic energy with a solid. The theory of Rayleigh waves was reviewed to provide a framework for experimental integrity determinations of ceramic coatings.

Provenance: Lockheed Martin Missiles & Fire Control

Other options for obtaining this report:

Via the Defense Technical Information Center (DTIC):
A record for this report, and possibly a pdf download of the report, exists at DTIC

Via National Technical Report Library:
This report may be available for download from NTRL. Use the Title from this record to locate the item in DTIC Online

Indications of Public Availability
No digital image of an index entry indicating public availability is currently available
The inside cover of this report indicates that it was released for public sale