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Measurement of sound velocity in liquid metals

Description: Present techniques for measuring sound velocity in liquid metals have been limited by transducers that cannot survive in extreme temperatures for the long periods these techniques require. The report describes work on a dynamic noncontacting method intended to measure sound velocity in liquid uranium. Measurements were successful with liquid lead, but not with liquid uranium. Flat slab specimens were found to give much better response than cylindrical shapes.
Date: May 10, 1979
Creator: Gathers, G. Roger
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Radial Reflection Diffraction Tomography

Description: We develop a wave-based tomographic imaging algorithm based upon a single rotating radially outward oriented transducer. At successive angular locations at a fixed radius, the transducer launches a primary field and collects the backscattered field in a ''pitch/catch'' operation. The hardware configuration, operating mode, and data collection method is identical to that of most medical intravascular ultrasound (IVUS) systems. IVUS systems form images of the medium surrounding the probe based up… more
Date: October 10, 2003
Creator: Lehman, S. K. & Norton, S. J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Performance, Thermal, and Vibration Qualification Testing of Zetec Acoustic Transducers, Model Z0002659-2, Sondicator Probes

Description: This report is a result of Qualification Test Plan No.001 prepared by Anthony Lavietes. The Qualification Test Plan outlines a list of requirements for thermal and vibrational testing of Zetac's Z0002659-2 Sondicator Probe acoustic transducers (hereafter called ''transducers''). The Zetec transducers are used in a system that employs an array of 7 acoustic transducers. Qualification testing of these transducers was required since they are a modified version of a standard catalog item from the m… more
Date: March 10, 2006
Creator: Jacobson, Gerard; Gemberling, Steven & Lavietes, Anthony
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

In-Axis and Cross-Axid Accelerometer Response in Shock Environments

Description: The characteristics of a piezoresistive accelerometer in shock environments have been studied at Sandia National Laboratories (SNL) in the Mechanical Shock Testing Laboratory for ten years The SNL Shock Laboratory has developed a capability to characterize accelerometers and other transducers with shocks aligned with the transducer's sensing axis and perpendicular to the transducer's sensing axis. This unique capability includes Hopkinson bars made of aluminum, steel, titanium, and beryllium. T… more
Date: March 10, 1999
Creator: Bateman, Vesta I. & Brown, Fred A.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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