Investigation of the fatigue life and crack growth in torque tightened bolted joints

Chakherlou, T.N.; Mirzajanzadeh, Morad; Vogwell, Jeffrey; Abazadeh, B.

doi:10.1016/j.ast.2010.08.003

Cited by 38 publications

(21 citation statements)

References 30 publications

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“…It can be seen that the predictions based on the volume and weighted volume method present more optimistic values, compared to the point and surface methods, and just by considering FCI life, because their graphs fall on top of the methods of point and surface. Moreover, the results of fractographic investigations, taken from the Chakherlou et al, 39 and depicted in Figure 15, show that for most of the loading cases, the point of crack initiation is located close to the middle part of the thickness of the specimen; while reducing the clamping force and the cyclic loading amplitude, it might move downward, for some cases. This matches with the numerical predictions.…”

Section: Resultsmentioning

confidence: 98%

“…The constants of the found in the similar research and work, as material property (Table 2). 39,46 FCG formulation theory and methodology FCG life is the life spent from the first moment that a crack is initiated until it propagates to a critical value, in which the component fails. To calculate the FCG life, the AFGROW software was used.…”

Section: Fci Life Estimation Methodologymentioning

confidence: 99%

“…Data presented in the aforementioned sources demonstrate the reasonable FCG life estimation of AFGROW. 39…”

Section: Introductionmentioning

confidence: 99%

“…Data presented in the aforementioned sources demonstrate the reasonable FCG life estimation of AFGROW. 39 In the previous studies, the investigations on multiaxial fatigue life have been carried out both experimentally and numerically. However, the numerical ones still lack a high degree of accuracy to make them so reliable that one can fully depend on them like the stress analysis fields.…”

Section: Introductionmentioning

confidence: 99%

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A fatigue crack initiation and growth life estimation method in single-bolted connections

Jirandehi

Chakherlou

2019

The Journal of Strain Analysis for Engineering Design

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Fatigue life estimation accuracy of mechanical parts and assemblies has always been the source of concern in different industries. The main contribution of this article lies in a study on the accuracy of different multiaxial fatigue criteria, proposing and investigating the accuracy of four optimized fatigue crack initiation life estimation methods—volume, weighted volume, surface and point, thereby improving the multiaxial fatigue life estimation accuracy. In order to achieve the goal, the fatigue lives of bolt clamped specimens, previously tested under defined experimental conditions, were estimated during fatigue crack initiation and fatigue crack growth and then summed together. In the fatigue crack initiation part, a code was written and used in the MATLAB software environment based on critical plane approach and the different multiaxial fatigue criteria. Besides the AFGROW software was utilized to estimate the crack growth share of fatigue life. Experimental and numerical results showed to be in agreement. Furthermore, detailed study and comparison of the results with the available experimental data showed that a combination of Smith–Watson–Topper approach and volume method results in lower error values, while a combination of Fatemi–Socie criterion and surface or point method presents estimated lives with lower error values. In addition, the numerical proposed procedure resulted in a good prediction of the location of fatigue crack initiation.

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Section: Resultsmentioning

confidence: 98%

Section: Fci Life Estimation Methodologymentioning

confidence: 99%

“…Data presented in the aforementioned sources demonstrate the reasonable FCG life estimation of AFGROW. 39…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

A fatigue crack initiation and growth life estimation method in single-bolted connections

Jirandehi

Chakherlou

2019

The Journal of Strain Analysis for Engineering Design

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“…Experimental methods can display the crack propagation procedure and results directly and accurately. For example, an experimental study on fatigue life and crack propagation in bolted joints under tightened torque indicated that the component lifespan under low amplitude load is longer than that under high amplitude load [2]. Another experiment examined the crack depth ratio threshold in slow crack propagation in high density polyethylene (HDPE) pipes.…”

Section: Introductionmentioning

confidence: 99%

Initial Crack Propagation and the Influence Factors of Aircraft Pipe Pressure

Wang

Zheng

et al. 2019

Materials

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In aircraft engineering, an increase of internal pressure in a hydraulic pipe increases the probability of pipe damage, leading to crack propagation becoming a serious issue. In this study, the extended finite element method (XFEM) is applied to simulate initial crack propagation in hydraulic pipes and to investigate the influence factors. Stress intensity factors are extracted to verify the mesh independence of XFEM, which is based on the level set method and unit decomposition method. A total of 30 finite element models of hydraulic pipes with cracks are established. The distribution of von Mises stress under different initial crack lengths and internal pressures is obtained to analyze the change of load-carrying capacity in different conditions. Then, a total of 300 finite element models of hydraulic pipes with different initial crack sizes and locations are simulated under different working conditions. The relationship between the maximum opening displacement and crack length is analyzed by extracting the opening displacement under different initial crack lengths. The length and depth of the initial crack are changed to analyze the factors affecting crack propagation. The opening size and crack propagation length are obtained in different directions. The results show that radial propagation is more destructive than longitudinal propagation for hydraulic pipes in the initial stage of crack propagation.

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Studies on Fatigue Life of Typical Welded and Bolted Steel Structural Connections

Raghava

Vishnuvardhan

Saravanan

et al. 2015

Advances in Structural Engineering

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Investigation of the fatigue life and crack growth in torque tightened bolted joints

Cited by 38 publications

References 30 publications

A fatigue crack initiation and growth life estimation method in single-bolted connections

A fatigue crack initiation and growth life estimation method in single-bolted connections

Initial Crack Propagation and the Influence Factors of Aircraft Pipe Pressure

Studies on Fatigue Life of Typical Welded and Bolted Steel Structural Connections

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