Abstract
Abstract Regular channels of various sizes aligned in 2-D were fabricated in alumina using soft solder. The spaces between these channels were varied and their effects on the properties of alumina were investigated. It was found that these channels could significantly affect the fracture strength and elastic modulus of the specimen, depending on the channel diameter and spacing. After 3-point bend tests, it was seen that the presence of channels resulted in enhancement of modulus of rupture (MOR) and decrease in the scatter when compared to the solid specimen (specimen without channels). It was also observed that there exists an optimal spacing between the channels that imparts the highest MOR to the specimen. Beyond this value of spacing the MOR decreased, while the elastic modulus increased. The compressive strength also exhibited much less scatter for the porous specimen than for the solid specimen.
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