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Created page with "{{Language_sel|LANG=ger|ARTIKEL=IKBV Stopp-Block-Methode}} {{PSM_Infobox}} ICIT – Stop block method __FORCETOC__ ==General information== The ICIT‒Stop block method is an experimental method for recording crack resistance (R) curves under dynamic (impact) stress, e.g. in instrumented Charpy impact tests (see also: Impact Loading Pen..."

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{{Language_sel|LANG=ger|ARTIKEL=IKBV Stopp-Block-Methode}}
{{PSM_Infobox}}
ICIT – Stop block method 
__FORCETOC__

==General information==

The ICIT‒Stop block method is an experimental method for recording [[Crack Resistance (R) Curve|crack resistance (R) curves]] under dynamic (impact) [[Stress|stress]], e.g. in [[Instrumented Charpy Impact Test|instrumented Charpy impact tests]] (see also: [[Impact Loading Pendulum Impact Tester|impact loading pendulum impact tester]]).

==Implementation of the method==

With the stop block method, the variation in crack lengths Δa is obtained by placing steel barriers of different widths b on the test [[Specimen|specimen]] to limit the deflection. This method is therefore very time-consuming, as the tests to produce different stable crack lengths must be carried out on barriers of different widths.

[[file:Stop Block Method 1.jpg]]
{|
|- valign="top"
|width="50px"|'''Fig. 1''':
|width="600px" |Test device for performing the stop-block method in a decoupled version
|}

To reduce vibrations, especially the [[Inertial Load|inertial load]], in this dynamic test, it is advisable to relieve the test [[Specimen|specimen]] and the boundary elements of vibrations by means of damping layers.

==See also==

* [[Instrumented Charpy Impact Test|Instrumented Charpy impact test]] (ICIT)
* [[Crack Resistance (R) Curve|Crack resistance (R) curve]]
* [[Crack Resistance Curve – Experimental Methods|Crack resistance curve – Experimental methods]]
* [[Impact Loading Plastics|Impact loading plastics]]
* [[ICIT – Extended Stop-Block Method|ICIT ‒ Extented stop-block method]]

'''References'''

* [[Grellmann, Wolfgang|Grellmann, W.]], Schierjott, U., [[Seidler, Sabine|Seidler, S.]], Rufke, B.: Anordnung zur Bestimmung des J·TJ-gesteuerten Risswachstums bei schlagartiger Beanspruchung. Patent DD 275113 (22.08.1988)
* [https://www.researchgate.net/profile/Wolfgang-Grellmann Grellmann, W.], [https://de.wikipedia.org/wiki/Sabine_Seidler Seidler, S.], Oberbach, K.: Ermittlung dynamischer Risswiderstandskurven von Polymerblends mit Hilfe des instrumentierten Kerbschlagbiegeversuches. 23. Vortragsveranstaltung, DVM- Arbeitskreis „Bruchvorgänge“ Berlin 26.–27.02.1991, Tagungsband pp. 401−412
* Savadori, A., Bramuzzo, M., Marega, C. J.: Integral Analysis of Ductile Fracture of PP/EP Rubber Blends. Polymer Testing 4 (1984) 73−89 https://doi.org/10.1016/0142-9418(84)90035-7
* [https://de.wikipedia.org/wiki/Wolfgang_Grellmann Grellmann, W.], Seidler, S., Oberbach, K.: Dynamische Risswiderstandskurven von Polymerblends. VDI-Berichte 882 "Experimentelle Mechanik in Forschung und Praxis, 14. Gesa-Symposium 25./26.04.1991 Berlin, proceedings pp. 433–443

[[category:Fracture Mechanics]]
[[category:Instrumented Impact Test]]

ICIT – Stop Block Method - Revision history