Journal of Applied Science and Engineering

Published by Tamkang University Press

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Fracture mechanisms of polycrystalline advanced ceramics

 2020

 Volume 23, Issue 2

Marin Petrovic1 and Elmedin Mesic1

1University of Sarajevo, Mechanical Engineering Faculty, Vilsonovo setaliste 9, 71000 Sarajevo, Bosnia and Herzegovina

Received: October 20, 2019
Accepted: March 03, 2020
Publication Date: May 10, 2026

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The method of sectioning and polishing the specimens.

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Download Citation:  BibTeX | http://dx.doi.org/10.6180/jase.202006_23(2).0022  

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Polycrystalline advanced ceramics are synthetic products produced by sintering together selected ceramics grains in a metal matrix serving as a binder. In order to be able to propose their optimisation, achieving high performance cutting and leading to reduced operating costs and improved working environment, relevant fracture mechanisms involved in their failure need to be determined. In this work, experimental results of plane strain fracture toughness obtained earlier on single-edge-V-notched-beam specimens were supported with microscopy analysis. These findings establish a clear connection between the fracture toughness results and the fracture mechanisms visible on and beneath the fracture surfaces, revealing adiabatic conditions that occur at the crack tip during fracture.

Keywords: Brittle fracture; Fracture mechanics; Impact fracture; Scanning electron microscopy; Toughness testing

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