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Acoustic/Magnetic Stress SensorHigh-resolution sensor fast, portable, does not require permanent bonding to structure. Sensor measures nondestructively type (compressive or tensile) and magnitude of stresses and stress gradients present in class of materials. Includes precise high-resolution acoustic interferometer, sending acoustic transducer, receiving acoustic transducer, electromagnet coil and core, power supply, and magnetic-field-measuring device such as Hall probe. This measurement especially important for construction and applications where steel is widely used. Sensor useful especially for nondestructive evaluation of stress in steel members because of portability, rapid testing, and nonpermanent installation.
Document ID
19860000164
Acquisition Source
Legacy CDMS
Document Type
Other - NASA Tech Brief
Authors
Heyman, J. S.
(College of William and Mary)
Namkung, M.
Date Acquired
August 12, 2013
Publication Date
June 1, 1986
Publication Information
Publication: NASA Tech Briefs
Volume: 10
Issue: 2
ISSN: 0145-319X
Subject Category
Mechanics
Report/Patent Number
LAR-13320
Accession Number
86B10164
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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