Journal ArticleDOI
Fractoemission from lead zirconate-titanate
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TLDR
In this paper, the electron, positive ion, and photon emission accompanying the fracture in vacuum of poly-crystalline 95/5 lead zirconate-titanate was measured.Abstract:
We present measurements of the electron, positive ion, and photon emission accompanying the fracture in vacuum of poly-crystalline 95/5 lead zirconate-titanate. The intensities of the charged-particle components of this fractoemission are shown to depend strongly on the direction (relative to the direction of fracture) and magnitude of polarization. The most intense emission is observed when the fracture surfaces are perpendicular to the polarization direction. The emission intensity increases monotonically with polarization. These results are interpreted in terms of a model involving charge separation on the fracture surfaces leading to a microdischarge during fracture. Implications to the interpretation of triboluminesence effects are discussed.read more
Citations
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Emission of charged particles from indentation fracture of rocks
Y. Enomoto,H. Hashimoto +1 more
TL;DR: In this paper, an attempt to measure the emission of charged particles from rocks undergoing indentation fracture under atmospheric conditions, using a specially designed indentation system, was made, and high electron and ion emission intensities could be detected during parts of the loading cycle when cracking occurred around the indent.
Journal ArticleDOI
Survey of the literature on mechanoluminescence from 1605 to 2013.
P. Jha,B. P. Chandra +1 more
TL;DR: A survey of the literature on mechanoluminescence from 1605 to 2013 is reported, finding that the field has a great potential for use in different types of mechano-optical devices such as stress sensors, damage sensors, impact sensors, fracture sensors and safety management monitoring systems.
Journal ArticleDOI
Microstructural characterization of spark plasma sintered boron carbide ceramics
TL;DR: In this paper, the microstructure of the ceramic sintered at 2200°C, with heating rates in the 50 −400°C/min range, displays abnormal grain growth, while for a 600 −400 −1.62μm average size, a homogeneous distribution of finely equiaxed grains with 4.05 ± 1.62
Journal ArticleDOI
Simultaneous measurements of the electron and photon emission accompanying fracture of single‐crystal MgO
TL;DR: In this article, the simultaneous emission of electrons and photons during the deformation and fracture of two types of high-purity single-crystal MgO was investigated, which exhibited significant differences in optical opacity due to differences in void and precipitate concentrations.
Journal ArticleDOI
Growth of BaTiO3 Seed Grains by the Twin-Plane Reentrant Edge Mechanism.
TL;DR: In this article, two different types of BaTiO3 seed particles, normal and twinned seeds of ∼30 μm on the average, were prepared from crushed sintered specimens.
References
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Journal ArticleDOI
The emission of electrons and positive ions from fracture of materials
TL;DR: In this article, the authors present a survey of charged particle emission from a number of materials including crystalline insulators, glass, graphite, polymers and composites, focusing on fibre-reinforced epoxy systems which yield unique forms of charge emission.
Journal ArticleDOI
Fracto‐emission: The role of charge separation
TL;DR: In this article, the authors have found that during fracture in vacuum of adhesive bonds and crystalline materials involving large amounts of charge separation on the surface the emission of charged particles, excited neutrals, light, and radio waves occurs with unique and revealing time dependencies.
Journal ArticleDOI
Fracto-Emission Accompanying Adhesive Failure
TL;DR: For a wide range of materials, emission of electrons (EE), positive ions (PIE), and photons (phE) is observed accompanying fracture as discussed by the authors, and the energy distribution curves for both EE and PIE decrease monotonically with a tail extending out to several hundred eV.
Journal ArticleDOI
Squeezing light out of crystals: Triboluminescence
TL;DR: In this article, the origin of the light and the mechanical, chemical, and crystallographic requirements of the phenomenon of triboluminescence are described. But the authors do not discuss the properties of these properties.