TY - JOUR
T1 - The energy dissipation during fatigue crack growth in metallic materials
AU - Quan, H.
AU - Alderliesten, R. C.
PY - 2022
Y1 - 2022
N2 - An energy equation for fatigue crack growth was proposed. It equates the total external work per cycle (dW/dN) to the sum of plastic dissipation (dUpl/dN), change in strain energy stored (dUe/dN) and the energy dissipated in new crack surface formation (dUa/dN). Fatigue crack growth experiment of 7075-T6 was used to derive the relation between fatigue crack growth rate (da/dN) and variables in this equation. The result shows dUpl/dN and dUe/dN are not straightforwardly related to da/dN. The dUa/dN, whose value cannot be obtained sufficiently precise experimentally, can be the variable straightforwardly related to da/dN within the range of test.
AB - An energy equation for fatigue crack growth was proposed. It equates the total external work per cycle (dW/dN) to the sum of plastic dissipation (dUpl/dN), change in strain energy stored (dUe/dN) and the energy dissipated in new crack surface formation (dUa/dN). Fatigue crack growth experiment of 7075-T6 was used to derive the relation between fatigue crack growth rate (da/dN) and variables in this equation. The result shows dUpl/dN and dUe/dN are not straightforwardly related to da/dN. The dUa/dN, whose value cannot be obtained sufficiently precise experimentally, can be the variable straightforwardly related to da/dN within the range of test.
KW - 7075-T6
KW - Energy dissipation
KW - Fatigue crack growth
UR - http://www.scopus.com/inward/record.url?scp=85131044489&partnerID=8YFLogxK
U2 - 10.1016/j.engfracmech.2022.108567
DO - 10.1016/j.engfracmech.2022.108567
M3 - Article
AN - SCOPUS:85131044489
SN - 0013-7944
VL - 269
JO - Engineering Fracture Mechanics
JF - Engineering Fracture Mechanics
M1 - 108567
ER -