Results 31 to 40 of about 23,229 (304)
Theoretical modelling of frequency dependent elastic loss in composite piezoelectric transducers
, 2007 The large number of degrees of freedom in the design of piezoelectric transducers requires a theoretical model that is computationally efficient so that a large number of iterations can be performed in the design optimisation.
Hayward, G. +8 more
core +1 more source
An Overview on Piezoelectric Cellular Polymers: Properties and Preparation [PDF]
علوم و تکنولوژی پلیمر, 2020 Piezoelectricity can be described as a capability of some particular materials which convert mechanical energy to electrical and vice versa. In addition to ceramics (such as PZT) and polar polymers (PVDF and its copolymers), non-polar cellular polymers ...
Sorena Azidhak +3 more
doaj +1 more source
Advanced Engineering Materials, EarlyView.This article presents the design, modeling, and characterization of air‐pressure–actuated programmable vibroacoustic metamaterials (PVAMM). The study focuses on leveraging air pressure to dynamically tune resonance frequencies for effective noise attenuation.
William Kaal +2 more
wiley +1 more source
Applied Study on Piezoelectric Properties of Ferroelectric Nanomaterials
Chemical Engineering Transactions, 2017 This paper presents the theoretical model d33(D) for the size dependence of the piezoelectric coefficient of the ferroelectric lead titanate PbTiO3 nano particles, where D is the diameter of nano particles.
Shuai Zhang +4 more
doaj +1 more source
Current Status and Challenges in Data Collection for Aerospace Coatings Deposited by Plasma Spraying
Advanced Engineering Materials, EarlyView.An innovative approach has been integrated into the GRENAT project to optimize plasma spraying and coating performance. Raw materials are accelerated and melted in the plasma generated by torches, creating coatings. Monitoring sensors collect process data which are combined with ex situ characterization data.
Lila Randriamananjara +8 more
wiley +1 more source
Journal of Advanced CeramicsThe lower electromechanical performance of lead-free piezoelectric materials remains a critical bottleneck impeding their ability to replace lead-based materials in energy harvesting.
Caixia Zhu +5 more
doaj +1 more source
Advanced Engineering Materials, EarlyView.Functionally graded metal–ceramic femoral stems are engineered through continuous UMAT‐based stiffness tailoring, eliminating discrete material interfaces while enhancing biomechanical compatibility. Low‐index power‐law gradation optimizes load transfer, reduces stress shielding, and controls implant–bone micromotion, highlighting a materials‐design ...
Rihem Nouira, Sameh Elleuch, Hanen Jrad
wiley +1 more source
Understanding and tuning negative longitudinal piezoelectricity in hafnia
npj Computational MaterialsMost piezoelectric materials exhibit a positive longitudinal piezoelectric effect (PLPE), while a negative longitudinal piezoelectric effect (NLPE) is rarely reported or paid much attention.
Huirong Jing, Chaohong Guan, Hong Zhu
doaj +1 more source
Effect of constrained sintering on the piezoelectric properties of PZT thick films [PDF]
, 2012 This thesis concerns the processing of thick lead zirconate titanate (PZT) films integrated with rigid substrates. The aim was to better understand the evolution of the microstructure, stress, and electrical properties of the films under constrained ...
Tillman, Mark
core
Porous, functionally gradient pyroelectric materials [PDF]
, 2007 Properties of a new type of pyroelectric ceramic structure containing a layer of known porosity laminated between two dense layers, to form a functionally gradient material (FGM), are reported.
Alcock, Jeffrey R. +2 more
core +1 more source