Non-Destructive Evaluation of Green Ceramic Body Density by Ultrasonic Technique

1970 ◽  
Vol 111 (5) ◽  
pp. 71-76
Author(s):  
M. Kulokas ◽  
R. Kazys ◽  
L. Mazeika
Keyword(s):  
Density Distribution ◽  
Measurement Method ◽  
Ceramic Body ◽  
Spatial Density ◽  
Ceramic Tiles ◽  
Uncertainty Of Measurements ◽  
Density Values ◽  
On Line ◽  
Non Destructive ◽  
Spatial Density Distribution

Laboratory measurements of spatial density distribution in green ceramic tiles were implemented using ultrasonic contact coupling measurement method. The main objective of these measurements is to measure spatial density distribution in pressed green ceramic tiles. Measurements of longitudinal ultrasonic wave propagation velocity were carried out using pulse and correlation methods and the tile density values were calculated. Evaluation of the measurement method, estimation of uncertainty of measurements and analysis of further improvements purposed to adapt it for on-line measurements in a production process were carried out. Ill. 7, bibl. 16, tabl. 1 (in English; abstracts in English and Lithuanian).http://dx.doi.org/10.5755/j01.eee.111.5.360

How to not inflate population estimates? Spatial density distribution of white-lipped peccaries in a continuous Atlantic forest

2011 ◽  
Vol 14 (5) ◽  
pp. 492-501 ◽  
Author(s):  
D. Norris ◽  
F. Rocha-Mendes ◽  
S. Frosini de Barros Ferraz ◽  
J. P. Villani ◽  
M. Galetti
Keyword(s):  
Density Distribution ◽  
Atlantic Forest ◽  
Spatial Density ◽  
Population Estimates ◽  
Spatial Density Distribution

scholarly journals Spectroscopic Diagnostics for Spatial Density Distribution of Plasmoid by Pellet Injection in the Large Helical Device

2010 ◽  
Vol 5 ◽  
pp. S1033-S1033 ◽  
Author(s):  
Gen MOTOJIMA ◽  
Ryuichi SAKAMOTO ◽  
Motoshi GOTO ◽  
Hiroshi YAMADA ◽  
LHD experiment group
Keyword(s):  
Density Distribution ◽  
Spatial Density ◽  
Spectroscopic Diagnostics ◽  
Pellet Injection ◽  
Spatial Density Distribution

Quantitative Infrared Thermography (IRT) and Holographic Interferometry (HI): Nondestructive Testing (NDT) for Defects Detection in the Silicate Ceramics Industry

2010 ◽  
Vol 68 ◽  
pp. 102-107 ◽  
Author(s):  
Stefano Sfarra ◽  
Dario Ambrosini ◽  
Alfonso Paoletti ◽  
Domenica Paoletti ◽  
Clemente Ibarra-Castanedo ◽  
...  
Keyword(s):  
Nondestructive Testing ◽  
Raw Materials ◽  
Ceramic Body ◽  
Inorganic Materials ◽  
Ceramic Tiles ◽  
Shrinkage Process ◽  
On Line ◽  
Ceramics Industry ◽  
Selection Of

Ceramics are inorganic materials fabricated by a high-temperature chemical reaction. Most ceramics are oxides, but the term is also used for silicides, nitrides and oxynitrides, hybrids and other inorganic materials. It is convenient to consider ceramics that are essentially silicates, called traditional ceramics, separately from all of the others. In the ceramic industry testing systems are seldom employed for detecting on-line the presence of defects in ceramic tiles. Defects in the ceramic body are usually originated during the pressing stage due to the incorrect use of process parameters or to the improper selection of raw materials. These defects are generally characterized by the inclusion of heterogeneous materials or agglomerates, which decreases the structural strength jeopardizing the final quality of the produced piece. Disagreeable repercussions on the sale market, especially on higher-quality ceramics such as porcelain, are characterized by the lack of specific nondestructive testing (NDT) techniques that “certify”, pre-emptive, the quality of the produced piece. The integration of IRT and HI for the NDT of a green ceramic tile with both fabricated and real defects (cracks caused by the natural shrinkage process), allowed us to produce a clear “defects map”.

Spatial density distribution as a basis for image compensation

2006 ◽  
Vol 53 (9) ◽  
pp. 1241-1244 ◽  
Author(s):  
A. M. El-Sherbeeny ◽  
J. V. Odom ◽  
J. E. Smith
Keyword(s):  
Density Distribution ◽  
Spatial Density ◽  
Image Compensation ◽  
Spatial Density Distribution

Measurement of spatial density distribution of primary-neutron generation in a pulse booster

Atomic Energy ◽  
1993 ◽  
Vol 75 (1) ◽  
pp. 575-577
Author(s):  
V. D. Anan'ev ◽  
B. I. Voronov ◽  
N. A. Gundorin ◽  
V. D. Denisov ◽  
S. A. Kvasnikov ◽  
...  
Keyword(s):  
Density Distribution ◽  
Spatial Density ◽  
Neutron Generation ◽  
Spatial Density Distribution
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