TY - JOUR
T1 - Using the lead crack concept and fractal geometry for fatigue lifing of metallic structural components
AU - Molent, Loris
AU - Spagnoli, Andrea
AU - Carpinteri, Andrea
AU - Jones, Rhys
PY - 2017/9/1
Y1 - 2017/9/1
N2 - Design of several metallic structural components, for instance in aerospace applications, should take into account the physically short crack behaviour. By characterising a fracture surface using fractals concepts, crack growth models similar to that proposed by Frost and Dugdale in 1958 and Hartman and Schjive in 1970 can be obtained. For short cracks, these models predict exponential crack growth with respect to the applied load history, and that has led to a practical aircraft lifing approach known as the lead crack framework. The present paper describes the fractality of metallic fracture surfaces and the crack growth behaviour in some fatigue tests.
AB - Design of several metallic structural components, for instance in aerospace applications, should take into account the physically short crack behaviour. By characterising a fracture surface using fractals concepts, crack growth models similar to that proposed by Frost and Dugdale in 1958 and Hartman and Schjive in 1970 can be obtained. For short cracks, these models predict exponential crack growth with respect to the applied load history, and that has led to a practical aircraft lifing approach known as the lead crack framework. The present paper describes the fractality of metallic fracture surfaces and the crack growth behaviour in some fatigue tests.
KW - Fatigue crack growth
KW - Fractal geometry
KW - Short crack regime
UR - http://www.scopus.com/inward/record.url?scp=85017352206&partnerID=8YFLogxK
U2 - 10.1016/j.ijfatigue.2017.04.001
DO - 10.1016/j.ijfatigue.2017.04.001
M3 - Article
AN - SCOPUS:85017352206
VL - 102
SP - 214
EP - 220
JO - International Journal of Fatigue
JF - International Journal of Fatigue
SN - 0142-1123
ER -