Location

La Jolla, CA

Start Date

1-1-1983 12:00 AM

Description

A new sensor is presented for detecting surface acoustic waves. The sensor constructed, using single mode fiber components, is small and rugged and has better sensitivity (.0003 Å) than has been reported for other SAW sensors. Optical reflection changes encountered while scanning surfaces can be divided out, making the probe applicable to rough samples of practical interest. Normal surface displacements near a defect (100 μm deep crack) have been measured in both long and short wavelength acoustic regimes.

Book Title

Review of Progress in Quantitative Nondestructive Evaluation

Volume

2B

Chapter

Section 25: Ultrasonic Transducers and Standards

Pages

1749-1762

DOI

10.1007/978-1-4613-3706-5_117

Language

en

File Format

application/pdf

Share

COinS
 
Jan 1st, 12:00 AM

Noncontacting Measurement of Surface Acoustic Waves

La Jolla, CA

A new sensor is presented for detecting surface acoustic waves. The sensor constructed, using single mode fiber components, is small and rugged and has better sensitivity (.0003 Å) than has been reported for other SAW sensors. Optical reflection changes encountered while scanning surfaces can be divided out, making the probe applicable to rough samples of practical interest. Normal surface displacements near a defect (100 μm deep crack) have been measured in both long and short wavelength acoustic regimes.