New and Refined Nondestructive Techniques for Graphite Billets and Shapes
Abstract
Particular emphasis was placed upon developing a better understanding and control of ultrasonic focused pulse echo inspection techniques to provide maximum response to small defects and the demonstration of the feasibility of delta scan ultrasonic inspection for graphite. Other areas of interest for this work were an investigation of laminographic X-ray techniques and a basic definition of eddy current parameters leading to a possible application of pulsed eddy current techniques to graphite inspection. In the area of interpretation, primary emphasis was on improved techniques for the deliniation of small defects on X-ray images and the application of signal processing, especially spectrum analysis, techniques for analyzing the ultrasonic responses received from various types of defects in graphite. Results of the first year's work have defined the limitations of 6conventional6 pulse echo testing and demonstrated the basic feasibility of delta inspection for graphite inspection. A listing of advanced techniques for X-rays film enhancement is also included.
Document Details
- Document Type
- Technical Report
- Publication Date
- Feb 01, 1970
- Accession Number
- AD0881707
Entities
People
- Arthur E. Oaks
Organizations
- General Electric