https://en.wiki.polymerservice-merseburg.de/index.php?action=history&feed=atom&title=Crack_Opening 2026-09-08T17:46:56Z Revision history for this page on the wiki MediaWiki 1.43.1 https://en.wiki.polymerservice-merseburg.de/index.php?title=Crack_Opening&diff=1065&oldid=prev 2026-09-03T09:16:12Z

<p></p> <table style="background-color: #fff; color: #202122;" data-mw="interface"> <col class="diff-marker" /> <col class="diff-content" /> <col class="diff-marker" /> <col class="diff-content" /> <tr class="diff-title" lang="en"> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">← Older revision</td> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 11:16, 3 September 2026</td> </tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l31">Line 31:</td> <td colspan="2" class="diff-lineno">Line 31:</td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>* [[Fracture Process Zone|Fracture process zone]]</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>* [[Fracture Process Zone|Fracture process zone]]</div></td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td></tr> <tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">==References==</ins></div></td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td></tr> <tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del style="font-weight: bold; text-decoration: none;">'''References'''</del></div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>* [[Blumenauer, Horst|Blumenauer, H.]], Pusch, G.: Technische Bruchmechanik. Deutscher Verlag für Grundstoffindustrie, Leipzig Stuttgart (1987) p. 70 (ISBN: VLN 152-915/61/62; see [[AMK-Library]] under E 29-2)</div></td></tr> <tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div> </div></td><td colspan="2" class="diff-side-added"></td></tr> <tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>* [[Blumenauer, Horst|Blumenauer, H.]], Pusch, G.: Technische Bruchmechanik. Deutscher Verlag für Grundstoffindustrie, Leipzig Stuttgart (1987) p. 70 (ISBN: VLN 152-915/61/62; see [[<del style="font-weight: bold; text-decoration: none;">AMK-Büchersammlung|</del>AMK-Library]] under E 29-2)</div></td><td colspan="2" class="diff-side-added"></td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>[[category:Fracture Mechanics|Fracture mechanics]]</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>[[category:Fracture Mechanics|Fracture mechanics]]</div></td></tr> </table>

Oluschinski https://en.wiki.polymerservice-merseburg.de/index.php?title=Crack_Opening&diff=198&oldid=prev 2025-12-01T07:06:17Z

<p>Created page with &quot;{{Language_sel|LANG=ger|ARTIKEL=Rissöffnung}} {{PSM_Infobox}} &lt;span style=&quot;font-size:1.2em;font-weight:bold;&quot;&gt;Crack opening&lt;/span&gt; __FORCETOC__ ==Definition of crack opening== The determination at the location of the original <a href="/index.php/Crack" title="Crack">crack tip</a> has become the standard for defining the crack opening. For numerical calculations, the <a href="/index.php/Crack_Tip_Opening_Displacement_Concept_(CTOD)" title="Crack Tip Opening Displacement Concept (CTOD)">CTOD</a> value is determined as the intersection of the crack edges with the straight line e...&quot;</p> <p><b>New page</b></p><div>{{Language_sel|LANG=ger|ARTIKEL=Rissöffnung}}<br /> {{PSM_Infobox}}<br /> &lt;span style=&quot;font-size:1.2em;font-weight:bold;&quot;&gt;Crack opening&lt;/span&gt;<br /> __FORCETOC__<br /> <br /> ==Definition of crack opening==<br /> <br /> The determination at the location of the original [[Crack|crack tip]] has become the standard for defining the crack opening. For numerical calculations, the [[Crack Tip Opening Displacement Concept (CTOD)|CTOD]] value is determined as the intersection of the crack edges with the straight line extending at an angle of 90° from the crack initiation point using the following relationship (see also Fig. 1):<br /> <br /> {|<br /> |-<br /> |width=&quot;20px&quot;|<br /> |width=&quot;500px&quot; | &lt;math&gt;\delta_{90^\circ};\delta_{45^\circ}=\frac{\delta_{90^\circ}}2&lt;/math&gt;<br /> |}<br /> <br /> The determination of &#039;&#039;&amp;delta;&#039;&#039;&lt;sub&gt;a&lt;/sub&gt; is associated with experimental difficulties and is essentially only used for numerical problems.<br /> <br /> [[file:Crack Opening Fig1.jpg|400px]]<br /> {| <br /> |- valign=&quot;top&quot;<br /> |width=&quot;50px&quot;|&#039;&#039;&#039;Fig. 1&#039;&#039;&#039;: <br /> |width=&quot;600px&quot; |Determination of the relevant parameters for crack opening <br /> |}<br /> <br /> ==See also==<br /> <br /> * [[Crack Model according to DUGDALE|Crack model according to DUGDALE]]<br /> * [[Crack Tip Opening Displacement Concept (CTOD)|Crack Tip Opening Displacement concept (CTOD)]]<br /> * [[Fracture Mechanics|Fracture mechanics]]<br /> * [[Plastic Zone|Plastic zone]]<br /> * [[Fracture Process Zone|Fracture process zone]]<br /> <br /> <br /> &#039;&#039;&#039;References&#039;&#039;&#039;<br /> <br /> * [[Blumenauer, Horst|Blumenauer, H.]], Pusch, G.: Technische Bruchmechanik. Deutscher Verlag für Grundstoffindustrie, Leipzig Stuttgart (1987) p. 70 (ISBN: VLN 152-915/61/62; see [[AMK-Büchersammlung|AMK-Library]] under E 29-2)<br /> <br /> [[category:Fracture Mechanics|Fracture mechanics]]</div>

Oluschinski