Publication detail

Simulation of Fatigue Crack Propagation in the Wing Main Spar Flange

AUGUSTIN, P.

English title

Simulation of Fatigue Crack Propagation in the Wing Main Spar Flange

Type

conference paper

Language

en

Original abstract

Simulation of fatigue crack growth in the bottom flange of twin turboprop commuter aircraft wing spar is described in this paper. Analysed crack propagation scenario represents real wing full-scale fatigue test failure. Computational model of bottom flange was prepared using three-dimensional fracture mechanics software FRANC3D. Calculation of crack growth under the variable amplitude loading was performed in AFGROW code using the NASGRO equation and Wheeler retardation model. It was verified with the results of wing spar specimen fatigue test and fractograpic analysis of fatigue fracture from this experiment. Computational model was applied in the prognostic algorithm of structure health monitoring system.

English abstract

Simulation of fatigue crack growth in the bottom flange of twin turboprop commuter aircraft wing spar is described in this paper. Analysed crack propagation scenario represents real wing full-scale fatigue test failure. Computational model of bottom flange was prepared using three-dimensional fracture mechanics software FRANC3D. Calculation of crack growth under the variable amplitude loading was performed in AFGROW code using the NASGRO equation and Wheeler retardation model. It was verified with the results of wing spar specimen fatigue test and fractograpic analysis of fatigue fracture from this experiment. Computational model was applied in the prognostic algorithm of structure health monitoring system.

Keywords in English

fatigue crack growth, wing spar, fatigue test, BEM, SHM

Released

03.12.2018

ISBN

978-80-214-5696-9

Book

13th Research and Education in Aircraft Design Conference

Pages from–to

66–75

Pages count

10

BIBTEX


@inproceedings{BUT151330,
  author="Petr {Augustin},
  title="Simulation of Fatigue Crack Propagation in the Wing Main Spar Flange ",
  booktitle="13th Research and Education in Aircraft Design Conference",
  year="2018",
  month="December",
  pages="66--75",
  isbn="978-80-214-5696-9"
}