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<p class="MsoBodyText"><span lang="EN-GB">This document specifies a test method for determination of the fracture resistance of monolithic ceramics at room temperature using the indentation fracture (IF) method.</span></p>
<p class="MsoBodyText"><span lang="EN-GB">This document is applicable to dense monolithic ceramics and whisker- or particulate-reinforced ceramics which are regarded as macroscopically homogeneous. This document is not applicable to monolithic silicon nitride ceramics for bearing balls and continuous-fibre-reinforced ceramics composites.</span></p>
<p class="MsoBodyText"><span lang="EN-GB">This document is applicable for material development, material comparison, quality assurance, characterization and reliability data generation.</span></p>
<p class="MsoBodyText"><span lang="EN-GB">Indentation fracture resistance, <em style="mso-bidi-font-style: normal;">K</em><sub>I,IFR</sub>, as defined in this document is not to be equated with fracture toughness determined using other test methods such as <em style="mso-bidi-font-style: normal;">K</em><sub>Isc</sub> and <em style="mso-bidi-font-style: normal;">K</em><sub>Ipb</sub>.</span></p>
<p class="Note"><span lang="EN-GB">NOTE<span style="mso-tab-count: 1;"> </span><em style="mso-bidi-font-style: normal;">K</em><sub>I,IFR</sub> is an estimate of a material’s resistance to cracking as introduced by an indenter and has correlations with wear resistance and rolling contact fatigue performance as well as machining processes, since these properties are governed by the resistance to crack extension in localized damage areas.<sup>[</sup><sup>1</sup><sup>]-[</sup><sup>3</sup><sup>]</sup> By contrast, fracture toughness properties <em style="mso-bidi-font-style: normal;">K</em><sub>Isc</sub> and <em style="mso-bidi-font-style: normal;">K</em><sub>Ipb</sub> are intrinsic properties of a material and are relevant to macroscopic and catastrophic fracture events with long cracks rather than those phenomena caused by microscopic and successive damage accumulation associated with short cracks.</span></p>
Reģistrācijas numurs (WIID)
90548
Darbības sfēra
<p class="MsoBodyText"><span lang="EN-GB">This document specifies a test method for determination of the fracture resistance of monolithic ceramics at room temperature using the indentation fracture (IF) method.</span></p>
<p class="MsoBodyText"><span lang="EN-GB">This document is applicable to dense monolithic ceramics and whisker- or particulate-reinforced ceramics which are regarded as macroscopically homogeneous. This document is not applicable to monolithic silicon nitride ceramics for bearing balls and continuous-fibre-reinforced ceramics composites.</span></p>
<p class="MsoBodyText"><span lang="EN-GB">This document is applicable for material development, material comparison, quality assurance, characterization and reliability data generation.</span></p>
<p class="MsoBodyText"><span lang="EN-GB">Indentation fracture resistance, <em style="mso-bidi-font-style: normal;">K</em><sub>I,IFR</sub>, as defined in this document is not to be equated with fracture toughness determined using other test methods such as <em style="mso-bidi-font-style: normal;">K</em><sub>Isc</sub> and <em style="mso-bidi-font-style: normal;">K</em><sub>Ipb</sub>.</span></p>
<p class="Note"><span lang="EN-GB">NOTE<span style="mso-tab-count: 1;"> </span><em style="mso-bidi-font-style: normal;">K</em><sub>I,IFR</sub> is an estimate of a material’s resistance to cracking as introduced by an indenter and has correlations with wear resistance and rolling contact fatigue performance as well as machining processes, since these properties are governed by the resistance to crack extension in localized damage areas.<sup>[</sup><sup>1</sup><sup>]-[</sup><sup>3</sup><sup>]</sup> By contrast, fracture toughness properties <em style="mso-bidi-font-style: normal;">K</em><sub>Isc</sub> and <em style="mso-bidi-font-style: normal;">K</em><sub>Ipb</sub> are intrinsic properties of a material and are relevant to macroscopic and catastrophic fracture events with long cracks rather than those phenomena caused by microscopic and successive damage accumulation associated with short cracks.</span></p>
