Fatigue Life Estimation of Medium-Carbon Steel with Different Surface Roughness

Li, Changyou; Dai, Weibing; Duan, Fei; Zhang, Yimin; He, David

doi:10.3390/app7040338

Cited by 42 publications

(19 citation statements)

References 13 publications

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“…The fatigue limit stress of additive manufacturing metallic parts from 316L material increased with decreasing roughness [62]. Li et al [63] achieved a decrease in the mean fatigue life between 15 and 30% when the average surface roughness increased from 0.4 to 0.8 µm or from 0.8 to1.6 µm. A decrease in the roughness height caused a higher corrosion resistance [15].…”

Section: Height Parametersmentioning

confidence: 99%

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Functional Importance of Surface Texture Parameters

2021

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Areal 3D analysis of surface texture gives more opportunities than a study of 2D profiles. Surface topography evaluation, considered as 3D dimensional analysis in micro or nanoscales, plays an important role in many fields of science and life. Among many texture parameters, those connected with height are the most often used. However, there are many other parameters and functions that can provide additional important information regarding functional behaviour of surfaces in different applications. The knowledge about the functional importance of various surface properties is low. This review tries to fill this gap. Surface texture parameters are presented in various groups: height, spatial, hybrid, functional, feature, and others. Based on experiences of the present authors and literature review, the relationships among various surface parameters and functional properties are described. A proposal of a selection of parameters on the basis of their functional significations is provided. Considerations for future challenges are addressed.

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Section: Height Parametersmentioning

confidence: 99%

“…Higher surface roughness corresponds to a higher tendency for fatigue. The surface, which has a higher roughness, is believed to lead to a lower resistance to fatigue resistance [60][61][62][63]. The fine microstructure of additive manufactured Ti-6Al-4V seemed to positively affect the fatigue life [60].…”

Section: Height Parametersmentioning

confidence: 99%

Functional Importance of Surface Texture Parameters

2021

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“…As the surface roughness influenced the fatigue strength [28], it was measured for the relevant specimens. The roughness of the clean cut is listed in Table 4 and in Table 5 for the fracture zone.…”

Section: Roughnessmentioning

confidence: 99%

Effect of One- and Two-Stage Shear Cutting on the Fatigue Strength of Truck Frame Parts

Stahl

Pätzold

Golle

et al. 2020

JMMP

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The longitudinal and transverse beams of trucks are manufactured with a large number of holes to fasten brackets for springs, fuel tanks, batteries etc. The quality of the holes, which is particularly influenced by the manufacturing process, has a major influence on the fatigue strength of the beams and thus the service lifetime of the vehicle. In most cases, the holes are produced using the highly economical shear cutting process. Previous investigations have shown that the fatigue strength of thin sheets can be increased by adjusting the shearing parameters and using a two-stage shear cutting process. This paper discusses the difference between one- and two-stage shear cutting on the hole quality of components made of S500MC (1.0984, thickness 8 mm) and its resulting fatigue strength. The hole quality is characterized by the geometry of the shear cut surface, its roughness, microstructure, and microhardness. It was shown that the two-stage shear cutting process allows producing holes of better quality than the ones manufactured by a one-stage shear cutting process. Furthermore, this resulted in an improved fatigue behavior.

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“…The profilometer scan shows that the surface morphology is rough as presented in Figure 4c. Ra (Ra = N ∑ n=1 Z n − Z /N, Z n is the individual height value of the measuring point, and Z is the average value of all height points) is 38.1 nm [37]. As shown in Figure 4b, the SEM image of SiO 2 /PVP film with 10 spray passes shows a uniform surface and the coffee-ring phenomenon is suppressed.…”

Section: Influence Of Pvp On Assembly Of the Nanofilmmentioning

confidence: 94%

Large-Area Fabrication of Structurally Colored and Humidity Sensitive Composite Nanofilm via Ultrasonic Spray-Coating

Kou

Zhang

et al. 2021

Polymers

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Intelligent structural colors have received extensive attention in recent years due to their diverse applications. However, the large-area, uniform, and cost-effective fabrication of ultra-thin structural color films is still challenging. Here, for the first time, we design and employ an ultrasonic spray-coating technique with non-toxic, green nano-silica and polyvinylpyrrolidone as raw materials, to prepare structural color films on silicon wafers. Due to the addition of polyvinylpyrrolidone, the coffee-ring effect during droplet drying is suppressed and uniform composite films are formed. We further perform a detailed study of the influence of various processing parameters including silica/polyvinylpyrrolidone concentration, substrate temperature, nozzle-to-substrate distance, and number of spray-passes on film roughness and thickness. By increasing the number of spray-passes from 10 to 30, the film thickness from 120 to 340 nm is modulated, resulting in different colors, and large-area and uniform colors on commercial round silicon wafers with 15 cm diameter are achieved. The silica/polyvinylpyrrolidone composite films show strong hydrophilicity and are sensitive to humidity changes, leading to quickly tunable and reversible structural colors. Quartz crystal microbalance with dissipation demonstrates water vapor adsorption and condensation on the nanofilm when increasing environmental humidity. Thereby, ultrasonic spray-coating as a novel film fabrication technique provides a feasible scheme for large-area preparation of intelligent structural colors.

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Fatigue Life Estimation of Medium-Carbon Steel with Different Surface Roughness

Cited by 42 publications

References 13 publications

Functional Importance of Surface Texture Parameters

Functional Importance of Surface Texture Parameters

Effect of One- and Two-Stage Shear Cutting on the Fatigue Strength of Truck Frame Parts

Large-Area Fabrication of Structurally Colored and Humidity Sensitive Composite Nanofilm via Ultrasonic Spray-Coating

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