Experimental Study on Fatigue Behaviour of Shot-Peened Open-Hole Steel Plates

Wang, Zhiyu; Wang, Hongtao; Cao, Mengqin

doi:10.3390/ma10090996

Cited by 15 publications

(13 citation statements)

References 29 publications

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“…This method was improved and brought to evaluate and predict the fatigue lives of various materials and components by later researchers. Wang et al presented an experimental study on the fatigue behavior of shot-peened open-hole plates with Q345 steel and evaluated the fatigue life result with an S-N curve (alternating Stress versus Number of cycles to failure) [2]. Ni and Mahadevan developed a strain-based probabilistic fatigue life prediction methodology for spot-welded joints based on p-ε-N curves family and Miner's rule [3].…”

Section: Introductionmentioning

confidence: 99%

Prediction of Strain Fatigue Life of HRB400 Steel Based on Meso-Deformation Inhomogeneity

Jin

Zeng

et al. 2020

Materials

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The relationship between strain fatigue life and evolution of meso-deformation inhomogeneity was studied, through the cyclic process of numerical simulation of crystal plasticity compared with the fatigue test of steel hot-rolled ribbed-steel bar 400 (HRB400). The statistical characterization parameters at grain level, including the standard deviation of the dot product of longitudinal stress and strain, the product of the macro stress and the standard deviation of the longitudinal strain, and the product of the macro stress ratio and the standard deviation of the longitudinal strain, were proposed and respectively applied to measure the meso-deformation inhomogeneity of materials. These parameters take the effect of peak stress into account, distinct from the pure strain statistical parameters. The numerical results demonstrate that the low-cycle fatigue life curves of materials are predictable using the new parameters as FIPs (fatigue indicator parameters), and the predictions are more rational than by utilizing the FIPs without considering the peak stress effect.

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Section: Introductionmentioning

confidence: 99%

Prediction of Strain Fatigue Life of HRB400 Steel Based on Meso-Deformation Inhomogeneity

Jin

Zeng

et al. 2020

Materials

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“…As far as shot peening is concerned, ceramic or metal particles strike the metal part and create multiple, partly overlapped dimples. The repeated impact of the impinging medium causes sturdy compressive stresses, as high as 600 MPa [15], that improve fatigue behavior and corrosion resistance [34]. Although optimizing the shot peening parameters to control the residual stress intensity and distribution, shot peening is already the most popular surface treatment for metal parts produced by means of the PBF technique [35].…”

Section: Introductionmentioning

confidence: 99%

On the Effectiveness of Different Surface Finishing Techniques on A357.0 Parts Produced by Laser-Based Powder Bed Fusion: Surface Roughness and Fatigue Strength

Denti

Sola

2019

Metals

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Laser-based powder bed fusion (L-PBF) is an additive manufacturing (AM) technique that uses a computer-controlled laser beam as the energy source to consolidate a metal powder according to a layer-upon-layer strategy in order to manufacture a three dimensional part. This opens the way for an unprecedented freedom in geometry, but the layer-wise build-up strategy typically results in a very poor surface finish, which is affected by the staircase effect and by the presence of partially molten particles. Surface finishing treatments are therefore necessary to obtain an adequate surface finish, to improve the fatigue behavior and to meet mechanical and aesthetic needs. The present contribution systematically compares numerous surface finishing techniques, including laser shock processing, plastic media blasting, sand blasting, ceramic shot peening and metal shot peening with steel particles of different sizes (ϕ = 0.2 mm and ϕ = 0.4 mm). The results show that all the proposed methods improve the surface quality and the fatigue life of A357.0 L-PBF parts. However, the achievement of the lowest surface roughness does not necessarily correspond to the best fatigue performance, thus suggesting that multiple mechanisms may be active and that besides surface roughness also residual stresses contribute to increase the fatigue strength.

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“…However, it is impossible to electrospun lignocellulose directly due to its complicated chemical structures and complex chemical linkages between different components [17]. The insolubility of lignocellulose in the conventional solvents is the biggest obstacle for its application on electrospinning [18]. The solubility of lignocellulose was improved for the direct utilization of all components after derivatization, especially the esterification reaction [18][19][20].…”

Section: Introductionmentioning

confidence: 99%

“…The insolubility of lignocellulose in the conventional solvents is the biggest obstacle for its application on electrospinning [18]. The solubility of lignocellulose was improved for the direct utilization of all components after derivatization, especially the esterification reaction [18][19][20]. In general, the esterification reaction of lignocellulose is mainly divided into heterogeneous and homogeneous processes [18,20].…”

Section: Introductionmentioning

confidence: 99%

“…The solubility of lignocellulose was improved for the direct utilization of all components after derivatization, especially the esterification reaction [18][19][20]. In general, the esterification reaction of lignocellulose is mainly divided into heterogeneous and homogeneous processes [18,20]. Compared with the homogeneous esterification, the heterogeneous esterification of lignocellulose is incomplete and inefficient because the esterification mainly occurred on the highly lignified cell corner and compound middle lamella [21,22].…”

Section: Introductionmentioning

confidence: 99%

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A Feasible Way to Produce Carbon Nanofiber by Electrospinning from Sugarcane Bagasse

et al. 2019

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Recently, the nanofiber materials derived from natural polymers instead of petroleum-based polymers by electrospinning have aroused a great deal of interests. The lignocellulosic biomass could not be electrospun into nanofiber directly due to its poor solubility. Here, sugarcane bagasse (SCB) was subjected to the homogeneous esterification with different anhydrides, and the corresponding esterified products (SCB-A) were obtained. It was found that the bead-free and uniform nanofibers were obtained via electrospinning even when the mass fraction of acetylated SCB was 70%. According to the thermogravimetric analyses, the addition of SCB-A could improve the thermal stability of the electrospun composite nanofibers. More importantly, in contrast to the pure polyacrylonitrile (PAN) based carbon nanofiber, the SCB-A based carbon nanofibers had higher electrical conductivity and the surface N element content. In addition, the superfine carbon nanofiber mats with minimum average diameter of 117.0 ± 13.7 nm derived from SCB-A were obtained, which results in a larger Brunauer–Emmett–Teller (BET) surface area than pure PAN based carbon nanofiber. These results demonstrated that the combination of the homogeneous esterification and electrospinning could be a feasible and potential way to produce the bio-based carbon nanofibers directly from lignocellulosic without component separation.

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Experimental Study on Fatigue Behaviour of Shot-Peened Open-Hole Steel Plates

Cited by 15 publications

References 29 publications

Prediction of Strain Fatigue Life of HRB400 Steel Based on Meso-Deformation Inhomogeneity

Prediction of Strain Fatigue Life of HRB400 Steel Based on Meso-Deformation Inhomogeneity

On the Effectiveness of Different Surface Finishing Techniques on A357.0 Parts Produced by Laser-Based Powder Bed Fusion: Surface Roughness and Fatigue Strength

A Feasible Way to Produce Carbon Nanofiber by Electrospinning from Sugarcane Bagasse

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