Page 72 - T. Anderson-Fracture Mechanics - Fundamentals and Applns.-CRC (2005)

1656_C02.fm Page 52 Thursday, April 14, 2005 6:28 PM

52 Fracture Mechanics: Fundamentals and Applications

TABLE 2.4
K Solutions for Common Test Specimens a
I

f  a  *
GEOMETRY  W 
Single Edge Notched Tension (SENT) πa
2tan
2W  +  a  
.
.
πa  0 752 2 02  W  
cos  
2W
πa
+ .   − 037 1 sin 2W   3    
Single Edge Notched Bend (SE(B)) S a
3
W W  199 − a
.
 a  a  32   W
/
+
21 2 1−
 W  W 
2
 1− a     a  +  a   

2 15 3 93
 W    . − .  W  2 7 .  W  


Center Cracked Tension (CCT)
π  πa a   −  a  2
.
4 W sec  2 W     1 0 025  W 
 a  4 
.
+ 006 
 W   
Double Edge Notched Tension (DENT) πa
2 W   . − .  a  − .  a  2
0 205
1 122 0 561
a    W   W 
1−
W
 a  3  a  4 
.
+ 0 471 + 0 190 
.
 W   W   
Compact Specimen a
2 + 2
W  0886 464  a  − 1332  a 
.
+ .
.
 1− a  32    W   W 
/
 W 
 a  3  a  4 
+ 14 72 − 5 60 
.
.
 W   W   
P  a 
*K = f where B is the specimen thickness.
I
BW  W 
a Taken from Tada, H., Paris, P.C., and Irwin, G.R., The Stress Analysis of Cracks Handbook. 2nd Ed., Paris
Productions, St. Louis, MO, 1985.