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NORMAS 
BS 6835:1988 \u2013 Determination of the Rate of Fatigue Crack Growth in Metallic 
Materials. 
 
ASTM E 8M, 1999 \u2013 Standard Test Method for Tension Testing of Metallic Materials. 
 
ASTM E647, 1999 \u2013 Standard Test Method for Measurement of Fatigue Crack Growth 
Rates. 
 
ASTM E399, 1999 \u2013 Standard Test Method for Plane-Strain Fracture Toughness of 
Metallic Materials. 
 106
APÊNDICE 
 
Tabela 1 \u2013 Valores da correção de curvatura da trinca de fadiga 
 * Corpo-de-prova com sobrecarga 
 
REGIÃO R CORPO-DE-PROVA K máx final K máx correção 
DIFERENÇA 
(%) 
cp 1 58,60 65,93 12,5 
cp 2* 66,21 70,24 6,0 
cp 3 64,10 64,14 0,1 
cp 4 54,47 58,10 6,6 
0,1 
cp 5 64,10 68,37 6,6 
cp 1* 93,42 98,48 5,4 
cp 2* 93,42 101,55 8,7 
cp 3 82,13 87,89 7,0 
METAL DE 
BASE 
0,5 
cp 4 95,19 95,24 0,05 
cp 1 58,60 62,13 6,0 
cp 2* 70,82 75,77 7,0 
cp 3 66,18 70,03 5,8 
0,1 
cp 4 73,13 77,01 5,3 
cp 1* 93,42 102,64 9,8 
cp 2* 93,42 100,59 7,6 
cp 3 91,27 96,90 6,1 
METAL DE 
SOLDA 
0,5 
cp 4 93,42 98,95 5,9 
cp 1 56,76 64,50 13,6 
cp 2* 64,10 70,87 10,5 0,1 
cp 3 72,87 76,68 5,2 
cp 1 80,63 93,41 15,8 
cp 2 97,28 101,79 4,6 
ZTA 
0,5 
cp 3* 93,42 106,44 13,9