Correlation between the flexure strength and the photon emission intensity during fracture on single crystal and polycrystalline MgO

Tadashi Shiota, Kouichi Yasuda, Yohtaro Matsuo

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

The flexure strength and the intensity of the photon emission during fracture were measured to investigate a correlation between them on single crystal and polycrystalline MgO. Prior to the fracture, IR and UV/vis photons were emitted due to the plastic deformation only in the single crystal. At the moment of the fracture, intense IR and UV/vis photon emissions were observed in both of the single crystal and polycrystalline MgO. In the single crystal, the peak emission intensities of the UV/vis and IR photons were positively correlated with the flexure strength. In the polycrystalline MgO, there was no clear correlation between the flexure strength and the UV/vis photon emission intensity, whereas the IR photon emission intensity was weakly and positively correlated with the flexure strength. The result suggests that crack propagation behavior would affect only the UV/vis photon emission during the fracture of MgO.

Original languageEnglish
Pages (from-to)230-233
Number of pages4
JournalMaterials Science and Engineering B: Solid-State Materials for Advanced Technology
Volume148
Issue number1-3
DOIs
Publication statusPublished - Feb 25 2008
Externally publishedYes

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flexing
Photons
Single crystals
single crystals
photons
crack propagation
plastic deformation
Crack propagation
Plastic deformation
moments

Keywords

  • Flexure strength
  • Fracto-emission
  • Fracture
  • Magnesia
  • Photon emission
  • Three-point bending

ASJC Scopus subject areas

  • Materials Science(all)
  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

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title = "Correlation between the flexure strength and the photon emission intensity during fracture on single crystal and polycrystalline MgO",
abstract = "The flexure strength and the intensity of the photon emission during fracture were measured to investigate a correlation between them on single crystal and polycrystalline MgO. Prior to the fracture, IR and UV/vis photons were emitted due to the plastic deformation only in the single crystal. At the moment of the fracture, intense IR and UV/vis photon emissions were observed in both of the single crystal and polycrystalline MgO. In the single crystal, the peak emission intensities of the UV/vis and IR photons were positively correlated with the flexure strength. In the polycrystalline MgO, there was no clear correlation between the flexure strength and the UV/vis photon emission intensity, whereas the IR photon emission intensity was weakly and positively correlated with the flexure strength. The result suggests that crack propagation behavior would affect only the UV/vis photon emission during the fracture of MgO.",
keywords = "Flexure strength, Fracto-emission, Fracture, Magnesia, Photon emission, Three-point bending",
author = "Tadashi Shiota and Kouichi Yasuda and Yohtaro Matsuo",
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TY - JOUR

T1 - Correlation between the flexure strength and the photon emission intensity during fracture on single crystal and polycrystalline MgO

AU - Shiota, Tadashi

AU - Yasuda, Kouichi

AU - Matsuo, Yohtaro

PY - 2008/2/25

Y1 - 2008/2/25

N2 - The flexure strength and the intensity of the photon emission during fracture were measured to investigate a correlation between them on single crystal and polycrystalline MgO. Prior to the fracture, IR and UV/vis photons were emitted due to the plastic deformation only in the single crystal. At the moment of the fracture, intense IR and UV/vis photon emissions were observed in both of the single crystal and polycrystalline MgO. In the single crystal, the peak emission intensities of the UV/vis and IR photons were positively correlated with the flexure strength. In the polycrystalline MgO, there was no clear correlation between the flexure strength and the UV/vis photon emission intensity, whereas the IR photon emission intensity was weakly and positively correlated with the flexure strength. The result suggests that crack propagation behavior would affect only the UV/vis photon emission during the fracture of MgO.

AB - The flexure strength and the intensity of the photon emission during fracture were measured to investigate a correlation between them on single crystal and polycrystalline MgO. Prior to the fracture, IR and UV/vis photons were emitted due to the plastic deformation only in the single crystal. At the moment of the fracture, intense IR and UV/vis photon emissions were observed in both of the single crystal and polycrystalline MgO. In the single crystal, the peak emission intensities of the UV/vis and IR photons were positively correlated with the flexure strength. In the polycrystalline MgO, there was no clear correlation between the flexure strength and the UV/vis photon emission intensity, whereas the IR photon emission intensity was weakly and positively correlated with the flexure strength. The result suggests that crack propagation behavior would affect only the UV/vis photon emission during the fracture of MgO.

KW - Flexure strength

KW - Fracto-emission

KW - Fracture

KW - Magnesia

KW - Photon emission

KW - Three-point bending

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