Location

Brunswick, ME

Start Date

1-1-1990 12:00 AM

Description

Conventional ultrasonic C-scan imaging normally employs focussed transducers excited by high-voltage impulsive signals. The reflected wave train, containing information about the internal features of the test piece, is translated, either through analog or digital means, to an intensity (or color) and plotted as a function of transducer position on the sample. While this method is certainly effective for many inspections, it is not the only way, or perhaps even the best way, to obtain this kind of information. The purpose of this paper will be to describe an alternate means to acquire ultrasonic C-scan data using a swept-frequency tone-burst imaging technique which presents several important advantages over more conventional means.

Book Title

Review of Progress in Quantitative Nondestructive Evaluation

Volume

9B

Chapter

Chapter 7: Engineered Materials

Section

Defects in Composites

Pages

1497-1504

DOI

10.1007/978-1-4684-5772-8_192

Language

en

File Format

application/pdf

Share

COinS
 
Jan 1st, 12:00 AM

Swept Frequency Ultrasonic Imaging in Composite Plates

Brunswick, ME

Conventional ultrasonic C-scan imaging normally employs focussed transducers excited by high-voltage impulsive signals. The reflected wave train, containing information about the internal features of the test piece, is translated, either through analog or digital means, to an intensity (or color) and plotted as a function of transducer position on the sample. While this method is certainly effective for many inspections, it is not the only way, or perhaps even the best way, to obtain this kind of information. The purpose of this paper will be to describe an alternate means to acquire ultrasonic C-scan data using a swept-frequency tone-burst imaging technique which presents several important advantages over more conventional means.