Únavová zkouška typu let za letem s náhodným pořadím zatížení

Flight by Flight Fatigue Test with Random Application of Loads

článek v časopise - ostatní, Jost

en

The most realistic method of experimental determining the mean fatigue life of an aircraft structure is a random application of loads on a flight by flight basis. This paper deals with the development of such load sequence which simulates a load history as it can occur in service. A computer program was written for generation of load sequence. Calculations were also performed for the determination of the influence the small amplitude cycles omission on propagation of cracks in the spar web and wing skin. Practical example of the wing spar specimen fatigue test using created load sequence is presented.

Článek se zabývá metodikou sestavení zatěžovací sekvence pro únavovou zkoušku letecké konstrukce, která simuluje reálné provozní zatěžování. Současně je prezentována praktická aplikace při únavové zkoušce nosníku křídla.

The most realistic method of experimental determining the mean fatigue life of an aircraft structure is a random application of loads on a flight by flight basis. This paper deals with the development of such load sequence which simulates a load history as it can occur in service. A computer program was written for generation of load sequence. Calculations were also performed for the determination of the influence the small amplitude cycles omission on propagation of cracks in the spar web and wing skin. Practical example of the wing spar specimen fatigue test using created load sequence is presented.

únavové zkoušky

Fatigue Test

2003

21.11.2003

VZLÚ, a.s.

1211-877X

Letecký zpravodaj

2003

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