Determination of the influence of TiO2 on the elastic properties of a mica based glass ceramic by ultrasonic velocity measurements

Gür, C. Hakan; Öztürk, Abdullah

doi:10.1016/j.jnoncrysol.2005.09.022

Cited by 10 publications

(2 citation statements)

References 19 publications

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“…The coupling medium of the specimens have a profound effect on the ultrasonic velocity measurements . Therefore, the glycerin (BQ‐Panametrics Olympus, USA) is used as a couplant for the longitudinal wave velocity measurements, and the shear wave couplant (SWC) (SWC‐Panametrics Olympus) is used to enhance the generation of the ultrasonic shear waves within the studied mediums.…”

Section: Methodsmentioning

confidence: 99%

Determination of elastic constants of epoxy resin/biochar composites by ultrasonic pulse echo overlap method

Oral

2015

Polym. Compos.

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This study is carried out in order to determine the elastic properties of Epoxy Resin (ER) Composites reinforced with various mixtures of China Poplar Char (CPC) and Pine Cone Char (PCC) as biochars by ultrasonic wave velocity measurement method. The prepared chars are mixed with epoxy resin matrix at weight percentages of 10%, 20%, and 30% for preparing the ER/Biochars (BC) composites. The effect of biochar amounts on the elastic properties of the ER/ BC composites are investigated by ultrasonic pulse echo overlap method. The morphologies of the samples are investigated by scanning electron microscopy. Based on the findings obtained from the present study, forming of the ER/CPC composites gives better values of elastic properties compared to forming of the ER/ PCC composites. According to the obtained results, the composition ratio of 70:30 is the most appropriate composition ratio for both of the ER/CPC and the ER/ PCC composites.

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Section: Methodsmentioning

confidence: 99%

Determination of elastic constants of epoxy resin/biochar composites by ultrasonic pulse echo overlap method

Oral

2015

Polym. Compos.

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“…Glass density was provided by a glass bead manufacturer and glass ultrasonic velocities were chosen close to literature values. 24 The value for the longitudinal velocity has been verified on several beads of 10 mm diameters by contact transmission measurement. Expanded polystyrene parameters included in specimens were considered to be equal to the ones of air according to the manufacturer, which ensures that the material contains 98% air.…”

Section: E Modeled Outcome For Wave Propagation In Concretementioning

confidence: 88%

An experimental evaluation of two effective medium theories for ultrasonic wave propagation in concrete

Chaix¹,

Rossat²,

Garnier³

et al. 2012

The Journal of the Acoustical Society of America

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This study compares ultrasonic wave propagation modeling and experimental data in concrete. As a consequence of its composition and manufacturing process, this material has a high elastic scattering (sand and aggregates) and air (microcracks and porosities) content. The behavior of the "Waterman-Truell" and "Generalized Self Consistent Method" dynamic homogenization models are analyzed in the context of an application for strong heterogeneous solid materials, in which the scatterers are of various concentrations and types. The experimental validations of results predicted by the models are carried out by making use of the phase velocity and the attenuation of longitudinal waves, as measured by an immersed transmission setup. The test specimen material has a cement-like matrix containing spherical inclusions of air or glass, with radius close to the ultrasonic wavelength. The models are adapted to the case of materials presenting several types of scattering particle, and allow the propagation of longitudinal waves to be described at the scale of materials such as concrete. The validity limits for frequency and for particle volume ratio can be approached through a comparison with experimental data. The potential of these homogenization models for the prediction of phase velocity and attenuation in strongly heterogeneous solids is demonstrated.

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Ultrasonic characterization of conductive epoxy resin/polyaniline composites

Oral

2015

J of Applied Polymer Sci

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This study presents the ultrasonic characterization of conductive epoxy resin (ER)/polyaniline (PANI) composites. The prepared PANI is mixed with ER matrix at weight percentages of 5%, 10%, and 15% for preparing the ER/PANI composites. The effects of PANI amount on the mechanical properties of ER/PANI composites are investigated by ultrasonic pulse‐echo‐overlap method. Also, electrical conductivity, ultrasonic wave velocity and ultrasonic micro‐hardness values of ER/PANI composites are correlated. Experimental results show that there is an excellent correlation between ultrasonic micro‐hardness and ultrasonic shear wave velocity. Also, the results of ultrasonic velocities and elastic constants values illustrate that the appropriate combination ratio is 95 : 5 for ER and PANI in ER/PANI composites. © 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015, 132, 42748.

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Determination of the influence of TiO2 on the elastic properties of a mica based glass ceramic by ultrasonic velocity measurements

Cited by 10 publications

References 19 publications

Determination of elastic constants of epoxy resin/biochar composites by ultrasonic pulse echo overlap method

Determination of elastic constants of epoxy resin/biochar composites by ultrasonic pulse echo overlap method

An experimental evaluation of two effective medium theories for ultrasonic wave propagation in concrete

Ultrasonic characterization of conductive epoxy resin/polyaniline composites

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