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Showing 1 to 20 of 30 for “"ultrasonic velocity"”.
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Adhesion quality control of laminated safety glass using ultrasonic velocity and attenuation measurements
Item reinstated by Sarah Shreeves (sshreeve@illinois.edu) on 2014-02-01T11:00:28Z Item was in collections: Graduate Theses and Dissertations at Illinois (ID: 204) Dissertations and Theses - Industrial and Enterprise Systems Engineering (ID: 752) No. of bitstreams: 4 Suchy_Thomas.pdf.txt: 215112 …
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Evaluation of reaction kinetics and material properties of cementitious ceramic materials using ultrasonic velocity and attenuation measurements
Ultrasonic velocity and attenuation measurements have been used to characterise a range of phosphate bonded, alumina filled, magnesia ceramics and other ceramic materials... Measurements were made over a range of frequency from 50kHz - 1 OM Hz, using a variety of commercial probes and equipment, …
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Relationship of Acoustic Emission and Ultrasonic Velocity to Deformation Mechanisms and Dilatancy During the Ductile Deformation of Marble
Made available in DSpace on 2014-12-14T07:10:54Z (GMT). No. of bitstreams: 1 8004208.pdf: 3420261 bytes, checksum: dd6891879ff832eed322673a139d773f (MD5) Previous issue date: 1979
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Ultrasonic velocity measurements of simulated lunar regolith with variable ice content: a laboratory and modeling investigation with implications for geophysical lunar resource exploration
… water ice deposits on the Moon. I performed ultrasonic velocity measurements of simulated lunar regolith at low temperature and low confining pressure with varying concentration and texture of water ice and developed a predictive rock physics model calibrated with these measurements. To build …
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Characterization of high temperature creep in siliconized silicon carbide using ultrasonic techniques
Ultrasonic velocity and attenuation were both measured on samples containing various degrees of damage due to high temperature creep. These results were compared with parameters associated with creep damage such as strain and cavity formation, in order to better understand the mechanisms of creep …
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Determination of Crispness in Breaded Fried Chicken Nuggets Using Ultrasonic Technique
… fried foods. In this study, the mechanical and ultrasonic techniques were used to determine crispness in breaded fried chicken nuggets under different storage conditions. The mechanical measurements have been made, using an Instron universal testing machine. An ultrasonic non-destructive …
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Laboratory Ultrasonic Pulse Velocity Logging for Determination of Elastic Properties from Rock Core
… property analysis surveys that combine acoustic velocity and density data to calculate acoustic estimates of elastic moduli. However, logistical concerns arise since the approach must be conducted at the advancing tunnel face. As a result, borehole mechanical property analyses are rarely used. …
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Control and qualification of titanium welds
… titanium and one of its alloys (Ti-6Al-4V) by ultrasonic means and qualiFying the metals in the as-welded condition in terms of their grain sizes and mechanical properties. The alignment and symmetry of the weld pools were successfully tested by using ultrasonic shear waves. The grain sizes at …
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Estudio y extensión de un modelo micromecánico trifásico para la caracterización ultrasónica de materiales compuestos
… the correlation that exists between the ultrasonic velocity and the components of rigidity and density of the composite material. In this work, the formulation of the three-phase micromechanic model has been generalized to materials with N-phases. From the formulations, a theoretical …
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Ultrasonic characterization of Ti-5Al-5Mo-5V-3Cr
… will affect the inspection of this material with ultrasonic testing both for the purposes of flaw detection and material characterization. The connection between material properties and ultrasonic characterization techniques will be discussed and then dissected in the context of Ti-5553. This …
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ΦΥΣΙΚΑ, ΜΗΧΑΝΙΚΑ ΚΑΙ ΧΗΜΙΚΑ ΧΑΡΑΚΤΗΡΙΣΤΙΚΑ ΤΩΝ ΤΡΙΑΔΙΚΩΝ ΨΑΜΜΙΤΩΝ ΤΗΣ ΚΟΙΛΑΔΑΣ YORK-ΑΓΓΛΙΑΣ
… TENSILE STRENGTH, DYNAMIC YOUNG'S MODULUS AND ULTRASONIC VELOCITY ARE PRESENTED AND DISCUSSED. ALSO A DETAILED GEOCHEMICAL ANALYSIS HAS BEEN UNDERTAKEN. A COMPARISON BETWEEN FIELD AND LABORATORY TRANSMISSIVITY DATA GIVES TF/TL RATIOS RANGING FROM 2:1 TO 27:1. COMPUTER PROGRAMS FOR ALL …
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Holographic determination of mechanical properties and behaviour of materials
… from the relationship E=v²p, where v is the velocity of a longitudinal wave propagating in a long rod and p is the density of the rod. The technique of double-exposure holographic interferometry was used to record longitudinal waves propagating in long brass and steel rods. The waves were …
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A seismic reflection study over the Bane anticline in Giles County, Virginia
… obtained. In addition to frequency filtering, velocity filtering, and deconvolution, new methods of interpreting RMS velocity analyses were developed and applied. Persistent events at about 1.0 and 2.8 seconds were found, suggesting the presence of large reflection coefficients. On the basis of …
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Gas Shale Permeability and Velocity Measurement at Laboratory Scale
… of the United States. We measured density and ultrasonic velocity based on the three plug technique. Matrix permeability and porosity were measured simultaneously by using a specially designed apparatus and a newly developed transient pressure technique invented by Metwally and Sondergeld, …
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Influence of geometric parameters on 3D periodic lattice effective properties
… evaluation of metamaterials properties using ultrasonic velocity measurements.
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Seismic anisotropy in siliciclastic reservoir rocks
… in the subsurface. Traditionally, laboratory ultrasonic velocity measurements have been used to provide important information on bulk aggregate seismic anisotropy, however, they do not allow the discrimination of the contribution from the various microstructural parameters (e. g., …
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Ultrasonic propagation in cancellous bone
… and the second is the evaluation of existing ultrasonic theories in attempt to apply them to the propagation in cancellous bone. The work is related to a new technique which uses ultrasonic attenuation to measure and predict osteoporosis, especially in the elderly population.The ultrasonic …
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Non-invasive quality evaluation of fruits and vegetables using ultrasound
Ultrasonic techniques were investigated for non-invasive quality evaluation of selected fruits and vegetables. An ultrasonic non-destructive evaluation system was developed and used to investigate physical and acoustical property changes for the selected fruits and vegetables non-invasively. The …
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The use of ultrasonics for characterising fats and emulsions
Ultrasonics has not found widespread use in the food industry, despite having considerable potential for characterising food materials. This is due to the complexity and diversity of food materials, the lack of suitable instrumentation and a poor understanding of how ultrasound interacts with many …
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Nondestructive Detection of Hollow Heart in Potatoes Using Ultrasonics
Ultrasonic techniques were used to detect hollow heart in potatoes nondestructively. Fifty Russet Burbank potatoes were evaluated physically and sonically. A pair of dry-coupling 50-kHz ultrasonic transducers were used to generate an ultrasonic pulse with a power level of 0.22 W for the test of …
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