Acoustic Microscopy for Nondestructive Evaluation of Materials

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Abstract:

Our work consisted of further improvements in the acoustic microscope. We have extended the operation to higher frequencies 3.6 GHz with a wavelength of 0.4 micrometers. We have built new hardware and developed new software to enable us to record the image in digital form on floppy discs. We have devised a system for recording two simultaneous images, each with a different frequency. The difference frequency can be varied as we wish. We have done further work on materials - both Inconel and manganese ferrite.

Author(s):
Quate, C. F.
Author Organization(s):
STANFORD UNIV CA EDWARD L GINZTON LAB OF PHYSICS
Descriptive Note:
Semiannual technical rept. 1 Aug 1980-31 Jan 1981
Pagination:
0103

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release
Distribution Statement:
Approved For Public Release; Distribution Is Unlimited.

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
GL-R-3232, AFOSR-TR-81-0435
Contract/Grant Number(s):
F49620-78-C-0098, ARPA ORDER-3569
Task Number(s):
B2
Project Number(s):
2306
Monitor Series:
TR-81-0435, DARPA
 Subject Terms
Joint Capability Areas:
JCA_5_Command and Control; JCA_1.2.3_Educating; JCA_5.3_Planning
Modernization Areas:
Microelectronics
Communities of Interest:
Sensors
Descriptor(s):
*ACOUSTIC EQUIPMENT, *MICROSCOPY, ACOUSTIC FIELDS, ACOUSTIC IMPEDANCE, ACOUSTIC LENSES, ACOUSTIC SCATTERING, ACOUSTIC WAVES, ACOUSTOOPTICS, ANALOG TO DIGITAL CONVERTERS, BACKSCATTERING, BEAM STEERING, DIFFRACTION ANALYSIS, DISK RECORDING SYSTEMS, FERRITES, HEAT FLUX, IMPEDANCE MATCHING, MAGNETIC DISKS, MANGANESE COMPOUNDS, NICKEL ALLOY INCONEL, NONDESTRUCTIVE TESTING
Field(s)/Group(s):
Printing and Graphic Arts, Acoustic Detection and Detectors
Keyword(s):
*ACOUSTIC MICROSCOPY, PHOTOACOUSTICS, PE61102F, WUAFOSR2306B2
Report Date:
1981 Mar 01