A comparing study on formation and microstructure features of aluminum titanate is investigated through both solid-state and sol-gel processes. Aluminum titanate formed by firing at 1350ºC and 1450ºC for 4h in solid-state process. In the sol-gel process formation of submicron sized particles is followed by addition of sucrose into the transparent sol. XRD analysis was confirmed the formation of...

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Lead Zirconate Titanate, PZT, layered into a composite with different materials, produces pre-stressed, curved, devices capable of enhanced displacement. This study focuses on Thunder and Lipca which are built using different combinations of constituent materials. Thunder devices consist of layers of aluminum, PZT, and stainless steel bonded with a hot-melt adhesive. Lipca devices consist of ca...

The coupled acoustic-gravity field channel used in this study is schematically illustrated in Fig. 5.1. A lead-zirconate-titanate transducer with 510kHz resonant frequency (170mm-length × 15mm-width × 4.2mm-thick, Fuji-ceramics Inc., Japan) was glued on a 5.00mm-thick Pyrex glass plate using epoxy adhesive. Boat-shaped PTFE spacer (0.8mm-thickness) was sandwiched between the glass plate with tr...