Failure of a crankshaft of an aeroengine: A contribution for an accident investigation

Infante, V.; Silva, José M.; Silvestre, Miguel; Baptista, R.

doi:10.1016/j.engfailanal.2013.02.002

Cited by 34 publications

(13 citation statements)

References 3 publications

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“…During the last decades, the studies of accidents causes have become popular in aerospace and aeronautic sectors [1][2][3]. Several aerospace applications using components subjected to static and dynamic loads are concerned with finding the reason of the components failure during service.…”

Section: Introductionmentioning

confidence: 99%

“…As previously A C C E P T E D M A N U S C R I P T done by Infante et al [2] in order to investigate another aircraft accident, the stress intensity factors for crack originating on the fork holes were calculated. Therefore a more comprehensive study, in addition to the stress field investigation, allows to better understand the assembly behaviour under fatigue crack propagation using Finite Element Analysis (FEA).…”

Section: Introductionmentioning

confidence: 99%

“…shows ratcheting marks located in the crack propagation area, which are the result of the merger of two micro crack propagation planes[2].…”

mentioning

confidence: 99%

See 2 more Smart Citations

Failure analysis of a nose landing gear fork

Infante

Almeida-Fernandes

Freitas

et al. 2017

Engineering Failure Analysis

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Failure analysis of a nose landing gear fork

Infante

Almeida-Fernandes

Freitas

et al. 2017

Engineering Failure Analysis

Self Cite

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“…Another source of the crack is the use of improper llets with an improper radius or an improper improvement in crankpin connection and llets of the main journal. Since a crankshaft is an important part in a vehicle, many studies have carried out the numerical analysis and the main source of crankshaft failure [16][17][18]. Moore et al [19] studied and analyzed the source of continuous failure of two cast steel crankshafts and drew the following conclusion: The woody fracture was initiated from the second crankpin perpendicular to the direction of piston load.…”

Section: Introductionmentioning

confidence: 99%

Microstructure and fatigue fracture mechanism for a heavy-duty truck diesel engine crankshaft

Alilakbari

Imanparast

Nejad³

2018

Scientia Iranica

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The main goal of this research is the experimental and numerical study of the fatigue function and failure of the crankshaft of the diesel engine of a heavy truck. To this end, a crankshaft of the diesel engine of a heavy truck that underwent failure after traveling 955000 km was used. The crack developed from the third crankpin, leading to nal failure in the llet of the 4th crankpin. To investigate the roots of this failure, several experimental studies were carried out. Besides, by using a three-dimensional nite element method, the location of the maximum stress in the crankshaft was determined using \complete crankshaft model" and \one-crank model". The application of the results of stress analysis was the basis for the crack growth model and fatigue life estimation to determine the stress intensity factor and fatigue life considering the related parameters and boundary conditions. At the nal stage, by using the results obtained from the given model for the fatigue crack growth, comparing them with experimental results, and examining the whole process, it was concluded that the scratches in crankpin region were the main reason for the fatigue failure obtained from the bending-torsional load-combination.

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“…ue to the service conditions and its peculiar shape design, fatigue appears to be the main failure reason of crankshafts used in aeronautics and automotive engines [1]. Consequently, big effort is devoted to investigate fatigue failures in crankshafts in order to enhance their fatigue life.…”

Section: Introductionmentioning

confidence: 99%

Fatigue characterization of a crankshaft steel: Use and interaction of new models

Blasón

Rodríguez

Fernández‐Canteli

2015

Frattura Ed Integrità Strutturale

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The peculiar geometrical shape and working conditions of crankshafts make fatigue becoming responsible for most of the failure cases in such components. Therefore, improvement of crankshaft performance requires enhancing its fatigue life. In this work, the fatigue behavior of a D38MSV5S steel, used for crankshafts in compact vehicles, is investigated according to two traditional ways of analysis, namely the stress based and the fracture mechanics based approaches, though using advanced design models: On the one side, a probabilistic Weibull regression S-N model is assessed for experimental results obtained from fatigue resonance tests. On the other side, the crack growth rate curve is calculated from crack growth tests, carried out on SENB specimens, using a normalizing procedure. Specific Matlab programs are developed to facilitate the evaluation process. The information gained from both models will contribute to provide a probabilistic interpretation to the Kitagawa-Takahashi diagram.

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Failure of a crankshaft of an aeroengine: A contribution for an accident investigation

Cited by 34 publications

References 3 publications

Failure analysis of a nose landing gear fork

Failure analysis of a nose landing gear fork

Microstructure and fatigue fracture mechanism for a heavy-duty truck diesel engine crankshaft

Fatigue characterization of a crankshaft steel: Use and interaction of new models

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