Velocity of elastic waves in porous ceramic materials: influence of pore structure

Citation:
Aduda BO, Boccaccini AR. "Velocity of elastic waves in porous ceramic materials: influence of pore structure." British Ceramic Transactions. 2003;102(3):103-108.

Abstract:

A review of recently published ultrasonic velocity-porosity data on a variety of porous ceramic materials,
which included information on the pore structure, has been undertaken. These experimental data have been
compared with those calculated using a spheroidal pore model that incorporates information on pore volume
fraction, shape and orientation. Good agreement, especially when fractional porosity is less than ~ 0.25,
between the experimental and calculated values is obtained even when a single ‘effective’ pore shape is
employed in the calculation. The agreement improves if the pore shape at each particular porosity level (the
point-by-point analysis) is used. The predictive ability of the spheroidal pore model is therefore demonstrated.

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