Comparison of R-Curve Behavior of Si3N4 Measured by Indentation Method and Single-Edge V-Notched Beam Technique (SEVNB)

Jana Špaková; Ján Dusza

doi:10.4028/www.scientific.net/KEM.409.308

Paper Titles

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Failure Investigation of Forming Rolls Made of Si₃N₄
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Comparison of R-Curve Behavior of Si₃N₄ Measured by Indentation Method and Single-Edge V-Notched Beam Technique (SEVNB)
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Investigation of γ-Alon Structural Evolution during Sintering and Hot-Pressing
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Effect of Sintering Time on the Phase Composition in PFN Ceramics Prepared by Sol-Gel Process
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Effect of Low Temperature Degradation on Scratch Behaviour of 3Y-TZP
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Fracture Properties of Basalt Fibre Composites with Cured or Pyrolysed Matrix
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HomeKey Engineering MaterialsKey Engineering Materials Vol. 409Comparison of R-Curve Behavior of Si3N4 Measured...

Comparison of R-Curve Behavior of Si₃N₄ Measured by Indentation Method and Single-Edge V-Notched Beam Technique (SEVNB)

Abstract:

Study compare R-curve behaviour of silicon nitride obtained using Vickers indented beam specimens and single edge V-notched beam (SEVNB). R-curve measurement realized by Vickers indented beam was reported by Krause. Crack growth using single edge V-notched beam was observed in situ. The indentation experiments, in comparison with SEVNB method revealed higher R-curve values (KR=3.3 – 4.8 MPa.m1/2). The discrepancy in the R-curve results is attributed to inaccuracy related to the determination of indentation toughness. The indentation fracture toughness may include the aspects of crack opening behaviour, residual indentation stress intensity.

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Periodical:

Key Engineering Materials (Volume 409)

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308-312

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.409.308

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Online since:

March 2009

Authors:

Jana Špaková, Ján Dusza

Keywords:

Indented Bending Bar Specimen, R-Curve, Single Edge V-Notched Beam

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