Accession Number : AD0843914
Title : Exploratory Development of Nondestructive Testing Techniques for Diffusion Bonded Interfaces.
Descriptive Note : Summary technical rept. 31 Jul 67-31 Jul 68,
Corporate Author : NORTH AMERICAN ROCKWELL CORP LOS ANGELES CA LOS ANGELES DIV
Personal Author(s) : Martin, George ; Moore, John F.
Report Date : SEP 1968
Pagination or Media Count : 187
Abstract : The report covers exploratory development of nondestructive testing techniques for solid-state diffusion-bonded parts. A literature survey describes the current inspection practices employed on diffusion-bonded laminates and the nature of the interface and bond properties. Test specimens of titanium, columbium, and TD-nickel were prepared for evaluating various test methods. The specimens provided a range of thicknesses and varying degree of bond quality as determined by mechanical property tests. In addition, a number of diffusion-bonded specimens were supplied by the Air Force. Conventional ultrasonic techniques and recently developed selective interface inspection techniques clearly indicate bond conditions where these vary from a no-bond condition to substandard bonds. A number of methods show potential correlation between a quantitative expression of bond quality such as shear or tensile strength. These methods include longitudinal and shear wave velocity, ultrasonic attenuation, and vibration analysis. (Author)
Descriptors : *NONDESTRUCTIVE TESTING), (*BONDED JOINTS, ULTRASONIC RADIATION, RADIOGRAPHY, ELECTROMAGNETIC RADIATION, VIBRATION, DIFFUSION BONDING, INTERFACES, LAMINATES, TITANIUM ALLOYS, ALUMINUM ALLOYS, VANADIUM ALLOYS, ZIRCONIUM ALLOYS, TUNGSTEN ALLOYS, NICKEL, METAL JOINTS.
Subject Categories : Metallurgy and Metallography
Couplers, Fasteners, and Joints
Test Facilities, Equipment and Methods
Distribution Statement : APPROVED FOR PUBLIC RELEASE