Transverse honeycomb composite transducers

Safari, A.; Halliyal, A.; Newnham, R. E.; Lachman, I. M.

doi:10.1016/0025-5408(82)90077-0

Cited by 29 publications

(14 citation statements)

References 3 publications

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“…This effect was exacerbated for thin composites, such as those studied here. 11,41,43 Rigid face plates have been shown to mitigate nonuniform surface deflections 43 and increase the efficiency of stress transfer to PZT pillars. 40,43 Thus, both the 3-2 and 3-1 composites were expected to exhibit improved stress transfer to the PZT pillars relative to the 3-3 composites, even so their measured values were still less than predicted by the unit-cell model.…”

Section: B Properties Of Pzt Monoliths and 3-x Pzt-polymer Compositesmentioning

confidence: 99%

“…13 Such techniques resulted in poorly controlled composite architectures with tortuous, interpentrating PZT, and polymer networks. More recently, PZT structures have been formed by drilling holes in PZT blocks, 10 extrusion, 11,14 lamination of tape-cast layers, 15 and manually stacking sintered PZT bars. 16 While these techniques offer improved control over the composite architecture, they are laborious and limited to certain designs.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Piezoelectric properties of 3-Xperiodic Pb(ZrxTi1−x)O3–polymer composites

Smay

Cesarano

Tuttle

et al. 2002

Journal of Applied Physics

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The piezoelectric properties of lead zirconate titanate (PZT)–polymer composites were studied as a function of composition and phase connectivity. PZT skeletal structures were fabricated by robotic deposition, densified at 1275 °C, and subsequently infiltrated with epoxy to produce the desired PZT–polymer composites. These 3-X structures consisted of a three-dimensional lattice of PZT rods (3–3) embedded in a polymer matrix, a PZT lattice/polymer matrix capped with PZT face plates (3–2), or PZT lattice/polymer matrix capped with PZT face plates and encircled by a solid PZT ring (3–1). The PZT:polymer ratio was varied systematically by changing the lattice (rod) spacing in each composite architecture. The concentration of PZT pillars, which formed along the poling direction at the intersections between PZT rods, varied as the PZT volume fraction squared. These 3-X composites displayed enhanced hydrostatic figures of merit relative to monolithic PZT due to stress concentration in the PZT pillars and their dramatically reduced dielectric constant, with the highest values found for the 3–2 and 3–1 composites. Our experimental observations were compared to theoretical predictions based on an isostrain, unit cell model modified to account for the partial support of stress in the stiff epoxy phase.

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Section: B Properties Of Pzt Monoliths and 3-x Pzt-polymer Compositesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Piezoelectric properties of 3-Xperiodic Pb(ZrxTi1−x)O3–polymer composites

Smay

Cesarano

Tuttle

et al. 2002

Journal of Applied Physics

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“…When poled parallel to the same direction (Shrout, Bowen & Schulze, 1980) the symmetry decreases to 4 mm. Transversely poled composites filled with epoxy (point group mm2) are especially sensitive to hydrostatic pressure waves (Safari, Halliyal, Newnham & Lachman, 1982).…”

Section: Composite Symmetrymentioning

confidence: 99%

Crystals and composites

Newnham¹,

Trolier-McKinstry²

1990

J Appl Cryst

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This paper is a review of the symmetry and connectivity of composite materials with particular emphasis on the effect that these have on composite properties. Analogies are drawn between composites and crystal structures to demonstrate the similarities between microscopic and macroscopic connectivity. A notation for composite transitions which can be used to describe changes in symmetry and connectivity is also presented.

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“…Sirera and Calzada [18], upon obtaining pure and doped PT powders, observed the emergence of a pyrochlore phase which disappeared with the increase of the treatment temperature. Several methods have been used to obtain lead titanate powders, such as high-energy milling [7], solgel method [19][20][21][22], co-precipitation [23] and hydrothermal synthesis [24], besides the traditional solid state reaction of mixed oxides [25]. In this work, we have suggested trimesic acid for the first time as an appropriate and fine chelate agent for the synthesis of PbTiO 3 nanoparticles using sol-gel method.…”

Section: Introductionmentioning

confidence: 96%

Novel sol–gel method for synthesis of PbTiO3 and its light harvesting applications

Sobhani‐Nasab

Rangraz-Jeddy

Avanes

et al. 2015

J Mater Sci: Mater Electron

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A novel two-step sol-gel method was used in order to synthesize PbTiO 3 nanoparticles with aid of Pb(CH 3 COO) 2 Á2H 2 O, and Ti(OC 4 H 9 ) 4 (TNBT) as the starting reagents in the presence of ethanol as the solvent. To the best of authors knowledge, it is first time that benzene-1,3,5-tricarboxylic acid [C 6 H 3 (COOH) 3 ] (trimesic acid) use as a chelate agent in produce lead titanate nanoparticles. Besides, to examine the effect of some reaction parameters such as surfactants, reaction temperature, and molar ratio of TNBT to trimesic acid on the morphology and chemical structure of final products several tests were performed. The as-synthesized PbTiO 3 nanoparticle was utilized as photo-anode material for the fabrication of FTO/PbTiO 3 /CdS/Pt-FTO and photocatalyst for decolonization of rhodamine-B (RhB) and methylene blue (MB) to investigation its light harvesting applications. Furthermore, according to the XRD results, only in the presence of trimesic acid as the chelate agent pure PbTiO 3 nanoparticle was synthesized. The photocatalyst results reveal that the maximum decolorization of 88 and 82 % for RhB and MB occurred with PbTiO 3 nanoparticles catalyst in 40 min of stirring under ultraviolet light irradiation, respectively.

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Transverse honeycomb composite transducers

Cited by 29 publications

References 3 publications

Piezoelectric properties of 3-Xperiodic Pb(ZrxTi1−x)O3–polymer composites

Piezoelectric properties of 3-Xperiodic Pb(ZrxTi1−x)O3–polymer composites

Crystals and composites

Novel sol–gel method for synthesis of PbTiO3 and its light harvesting applications

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