EMAT (Electromagnetic-Acoustic Transducer) System for Ultrasonic Velocity

reportActive / Technical Report | Accession Number: ADA212895 | Open PDF

Abstract:

An EMAT system has been designed and constructed which can be used for wall thickness measurements on steel tubes with surface temperatures up to 650 C and for measurements of residual stress near to the inner surface of a 120 mm gun barrel. The system consists of an EMUS Electromagnetic-Ultrasonic transmitterreceiver instrument, a high temperature Electromagnetic-Acoustic Transducer EMAT for wall thickness measurements with normally incident shear waves using the pulse-echo-technique and a device consisting of one transmitting EMAT and two receiving EMATs which are collinearly integrated into a mechanical support for the transduction of Rayleigh waves that are travelling along the circumferential direction on the inner surface of a 120 mm gun tube.

Author(s):
Salzburger, H. J. ; Wilbrand, A.
Author Organization(s):
FRAUNHOFER-INST FUER ZERSTOERUNGSFREIE PRUEFVERFAHREN SAARBRUECKEN (GERMANY F R)
Descriptive Note:
Final technical rept.
Pagination:
0045

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):
R/D-5932-PH-01-F
Contract/Grant Number(s):
DAJA45-88-C-0016
Monitor Series:
5932-PH-01-F, ERO
 Subject Terms
Joint Capability Areas:
JCA_6.1.1_Wired Transmission; JCA_1_Force Support; JCA_6.1_Information Transport; JCA_6_Net Centric; JCA_5_Command and Control; JCA_1.1_Force Management; JCA_1.2.7_Experimentation; JCA_5.5.2_Task; JCA_5.5_Direct
Communities of Interest:
Human Systems
Descriptor(s):
*GUNS, *TRANSDUCERS, THICKNESS, MECHANICAL PROPERTIES, SURFACES, ULTRASONICS, INTERNAL, RESIDUAL STRESS, INSTRUMENTATION, WALLS, SURFACE TEMPERATURE, ACOUSTIC VELOCITY, TRANSMITTER RECEIVERS, RAYLEIGH WAVES, ELASTIC WAVES, SHEAR PROPERTIES, MEASUREMENT
Field(s)/Group(s):
Guns
Report Date:
1989 Jul 01