Location

La Jolla, CA

Start Date

1-1-1998 12:00 AM

Description

The scanning of surface saw cuts can yield clues both about the interaction of nondestructive evaluation (NDE) devices with samples and the ability to detect and characterize flaws of other shapes. In this case, the device is a modified AC magnetic bridge (the bridge) which has been described elsewhere [1,2,3]. Electrical bridges can be operated in two modes: Off-null operation occurs when the bridge output is minimized (nulled) and the reaction of the bridge to various samples is judged by changes in the output voltage. Off-null operation is principally used for control. Renull operation occurs when the bridge is nulled for each sample and the physical parameters required to null the bridge (usually resistance and/or resistance and capacitance) can be used to determine physical differences in the samples.

Book Title

Review of Progress in Quantitative Nondestructive Evaluation

Volume

17B

Chapter

Chapter 7: New Inspection/Control Procedures

Section

New Techniques

Pages

1831-1837

DOI

10.1007/978-1-4615-5339-7_237

Language

en

File Format

application/pdf

Share

COinS
 
Jan 1st, 12:00 AM

Saw-Cut Scanning Patterns

La Jolla, CA

The scanning of surface saw cuts can yield clues both about the interaction of nondestructive evaluation (NDE) devices with samples and the ability to detect and characterize flaws of other shapes. In this case, the device is a modified AC magnetic bridge (the bridge) which has been described elsewhere [1,2,3]. Electrical bridges can be operated in two modes: Off-null operation occurs when the bridge output is minimized (nulled) and the reaction of the bridge to various samples is judged by changes in the output voltage. Off-null operation is principally used for control. Renull operation occurs when the bridge is nulled for each sample and the physical parameters required to null the bridge (usually resistance and/or resistance and capacitance) can be used to determine physical differences in the samples.