Body measurements Info

The measurement of bulk density of for example green ceramic tiles during production is a fundamental parameter for the quality of the product. Tomography density evaluation techniques mechanical densifcation green bodies 1. This can also be used to measure bulk density of green clay body chips which would with other techniques break down under water or xylene. Density or grain density iso 8840 and sans 5904. The measurement techniques investigated include mass volume measurement mercury pycnometry powderdisplacement pycnometry and noncontact ultrasonic method. The porosity of freshly pressed ceramic bodies governs green tile behavior during the process drying glazing and firing and largely determine the properties of the final product.

The green body density feld of a truncated cylinder made of alumina powder is evaluated using this method and the reconstructed feld is presented. Essentially the same differences have been confirmed by hydrostatic weighing body density as measured by whole body immersion in water skin fold thickness anthropometry dual energy x ray absorptiometry electrical impedance proton magnetic resonance spectrometry tbw measurement by isotope dilution and air displacement plethysmography buffa et al 2001. Powder sintering involves raising the temperature of the green compact pressed powder part to a certain level and keeping it at that temperature for a certain amount of time. The sintering temperature is usually between 70 and 90 of the melting point of the powder metal. The ultrasonic direct transmission density measurement. Fields et al 2001 2002.

The green body was formed under a mean axial stress of 120 mpa which is slightly more than the supplier recommended 100 mpa forming pressure to attain a green density of 24 g cm 3. The analysis took advantage of the symmetry of the green body along the diameter thereby yielding two mirror images of the sample. This method uses non contact ultrasonic probes. Crossing and cross correlation techniques fig. Correspond to the original solution. The measurement of bulk density of for example green ceramic tiles during production is a fundamental parameter for the quality of the product.

Abstract green body density measurement techniques were investigated and compared. Introduction the ceramics industry is interested in increasing ef. The work presents an innovative method for non intrusive measurement of the apparent density of green ceramic tiles during the production stage. The bulk density of a green ceramic body provides valuable information needed to control the quality of a ceramic piece after firing with respect to its final size and the porosity and cracks in the body and is proportional to the final mechanical. The bulk density of a green ceramic body provides. This will cause bonding mechanisms to occur between powder particles pressed together in the compact.