M
Mark Hoffman
Researcher at University of New South Wales
Publications - 245
Citations - 6798
Mark Hoffman is an academic researcher from University of New South Wales. The author has contributed to research in topics: Ceramic & Fracture mechanics. The author has an hindex of 42, co-authored 233 publications receiving 6080 citations. Previous affiliations of Mark Hoffman include University of Stuttgart & Monash University, Clayton campus.
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Free vibration analysis of layered functionally graded beams with experimental validation
TL;DR: An improved third order shear deformation theory is employed to formulate a governing equation for predicting free vibration of layered functionally graded beams in this article, where the Ritz method is adopted to solve the governing equation.
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Direct measurement of the domain switching contribution to the dynamic piezoelectric response in ferroelectric ceramics
TL;DR: In this paper, the authors reported direct measurements of non-180° domain wall motion in ceramic lead zirconate titanate during application of sub-coercive cyclic driving electric fields using an in situ stroboscopic neutron diffraction technique.
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Electric-field-induced strain mechanisms in lead-free 94%(Bi1/2Na1/2)TiO3―6%BaTiO3
Hugh Simons,John E. Daniels,Wook Jo,Robert Dittmer,Andrew J Studer,Maxim Avdeev,Jürgen Rödel,Mark Hoffman +7 more
TL;DR: In this article, high-resolution neutron diffraction has been used to investigate the structural origin of the large electric-field-induced remanent strain in 94(Bi1/2Na 1/2)TiO3-6BaTiO 3 ceramics, and the virgin material was found to be a mixture of near-cubic phases with slight tetragonal and rhombohedral distortions of a 0a0c+ and a−a −a−a− octahedral tilt type.
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A High-Temperature-Capacitor Dielectric Based on K0.5Na0.5NbO3-Modified Bi1/2Na1/2TiO3–Bi1/2K1/2TiO3
Robert Dittmer,Eva-Maria Anton,Wook Jo,Hugh Simons,John E. Daniels,Mark Hoffman,Jan Pokorny,Jan Pokorny,Ian M. Reaney,Jürgen Rödel +9 more
TL;DR: A high-temperature dielectric, (1−x) 0.6Bi1/2Na 1/2TiO3, off the morphotropic phase boundary of the parent matrix 0.5NbO3 has been developed for application as a high temperature capacitor.
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Saturated domain switching textures and strains in ferroelastic ceramics
TL;DR: In this paper, saturated domain switching textures of three different ferroelastic ceramic crystal systems were introduced and the extrinsic domain switching strain was calculated using a volume-weighted integral of a single pole figure.