Oluschinski: Created page with "{{Language_sel|LANG=ger|ARTIKEL=C-förmiger Prüfkörper}} {{PSM_Infobox}} C-shaped test specimen The C-shaped test specimen is referred to as an ‘arc-shaped specimen’ in Anglo-Saxon countries. FORCETOC ==Test specimen shape== 500px {| |- valign="top" |width="50px"|'''Fig.''': |width="600px" |Schematic presentation of the C-shaped test specimen |} '''Dimensions (ac..."

2026-09-03T09:42:08Z

Created page with "{{Language_sel|LANG=ger|ARTIKEL=C-förmiger Prüfkörper}} {{PSM_Infobox}} C-shaped test specimen The C-shaped test specimen is referred to as an ‘arc-shaped specimen’ in Anglo-Saxon countries. __FORCETOC__ ==Test specimen shape== 500px {| |- valign="top" |width="50px"|'''Fig.''': |width="600px" |Schematic presentation of the C-shaped test specimen |} '''Dimensions (ac..."

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{{Language_sel|LANG=ger|ARTIKEL=C-förmiger Prüfkörper}}
{{PSM_Infobox}}
C-shaped test specimen 

The C-shaped test specimen is referred to as an ‘arc-shaped specimen’ in Anglo-Saxon countries.
__FORCETOC__

==Test specimen shape==

[[File:C-shaped Test Specimen-1.jpg|500px]]
{|
|- valign="top"
|width="50px"|'''Fig.''':
|width="600px" |Schematic presentation of the C-shaped test specimen
|}

'''Dimensions (according [1, 2]):'''
 
''W'' = 2 ''B'' standard test specimen
 
''W'' = 2 ''B'' to 4 ''B'' alternative test specimen
 
''D'' = 0.25 W
 
''a'' = 0.45 ... 0.55 W
 
''x'' = 0.5 W
 
''N'' = ''W''/10 (at least 1.5 mm)

'''Other test specimen shapes:'''
{|
|-valign="top"
|RCT
|width="15px" | –
|[[RCT-Specimen|RCT-Specimen]] (disc shaped specimen) [1, 2] 
or also referred to as: Round test specimen according to FEDDERN and MACHERAUCH
|-
|CTPB
| –
|Pipe segment test specimen
|}

==Determination equation==

{|
|-
|width="20px"|
|width="500px" | <math>K_I = \frac{F}{B \cdot W^{1/2}} f_1(a/W) \cdot f_2(x/W)</math>
|}

{|
|-
|width="20px"|
|width="500px" | <math>f_1(a/W) = 18.23(a/W)^{1/2}-106.2(a/W)^{3/2}+379.7(a/W)^{5/2}-582(a/W)^{7/2}+369.1(a/W)^{9/2} \!\ </math>
|}

{|
|-
|width="20px"|
|width="500px" | <math>f_2(x/W) = \lbrack 1+1.54(x/W)+0.5(a/W)\rbrack \cdot \lbrace 1+0.22 \lbrack 1-(a/W)^{1/2}(1-(r_1/r_2) \rbrack \rbrace \!\ </math>
|}

==Application==

* component-specific test specimen removal for thick-walled high-pressure cylinders
* plastic pipes (e.g., PVC pipes in hot water systems, where the weld line is considered a weak point (notch) [3])

==See also==

* [[Specimen for Fracture Mechanics Tests|Specimen for fracture mechanics tests]]
* [[CT-Specimen|CT-specimen]]
* [[RCT-Specimen|RCT-specimen]]
* [[Notch]]
* [[Weld Line|Weld line]]

==References==

{|
|-valign="top"
|[1]
|ASTM E 399 (2024): Standard Test Method for Linear-Elastic Plane-Strain Fracture Toughness of Metallic Materials
|-valign="top"
|[2]
|[[Blumenauer, Horst|Blumenauer, H.]], Pusch, G.: Technische Bruchmechanik. Deutscher Verlag für Grundstoffindustrie, Leipzig Stuttgart (1993) 3rd Edition (ISBN 3-342-00659-5; see [[AMK-Library]] under E 29-3)
|-valign="top"
|[3]
|Natusch, A.: Bruchmechanische Untersuchungen an spritzgegossenen Formteilen aus PVCC. Ingenieurbeleg, [https://de.wikipedia.org/wiki/Technische_Hochschule_Leuna-Merseburg Technischen Hochschule „Carl Schorlemmer“ Leuna-Merseburg] 1983 (see [[AMK-Library]] under B 3-13)
|}

[[Category:Fracture Mechanics]]
[[Category:Specimen]]

C-shaped Test Specimen - Revision history