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Steel and Composite Structures
  Volume 32, Number 3, August10 2019 , pages 305-312
DOI: https://doi.org/10.12989/scs.2019.32.3.305
 


Effect of fatigue crack propagation on natural frequencies of system in AISI 4140 Steel
Habibullah Bilge, Emre Doruk, Fehim F

 
Abstract
    In this study, we investigated the effect of fatigue crack propagation of the beams which have a vital importance in engineering applications, on the natural frequency of the system. Beams which have a wide range of applications, are used as fundamental structural elements in engineering structures. Therefore, early detection of any damages in these structures is of vital importance for the prevention of possible destructive damages. One of the widely used methods of early detection of damages is the vibration analysis of the structure. Hence, it is of vital importance to detect and monitor any changes in the natural frequencies of the structure. From this standpoint, in this study we experimentally investigated the effect of fatigue crack propagation on beams produced from 4140 steel, of the natural frequency of the beam. A crack was opened on the 8
 
Key Words
    vibration analysis; cracked beam; fatigue crack propagation; natural frequency
 
Address
(1) Habibullah Bilge, Murat Pakdil:
Department of Mechanical Engineering, Abant Izzet Baysal University, 14280, Bolu, Turkey;
(2) Habibullah Bilge:
Institute of Natural Sciences, Sakarya University, 54187, Sakarya, Turkey;
(3) Emre Doruk:
R&D Department, TOFAS-FIAT, 16369, Bursa, Turkey;
(4) Emre Doruk:
Department of Mechanical Engineering, Yalova University, 77200, Yalova, Turkey;
(5) Fehim F
 

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