An experimental and theoretical study of the abrasion performance of digital light processing parts

Kazemi, Mehdi Mohammad; Rahimi, Abdolreza

doi:10.1177/0954405420981333

Cited by 2 publications

(1 citation statement)

References 34 publications

(36 reference statements)

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“…The surface skewness parameter Rsk reveals the asymmetry of the surface profile, which is greatly influenced by discrete peaks or valleys. 24,25 Figure 5(b) shows that larger Rsk values are obtained with MQCL technology for most of the cutting parameters. A positive Rsk parameter value indicates peak surface characterization, and a negative value indicates valley characterization.…”

Section: Parameter Analysis Of the Surface Morphologymentioning

confidence: 99%

Surface integrity investigation and multi-objective optimization in high-speed cutting of AISI 304 stainless steel for dry cutting and MQCL conditions

Yinzhi

Zheng

Liu

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part B:

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To realize green production in the manufacturing industry, it is important to reduce or even eliminate the discharge of cutting fluid. In this study, the impact tendency of the cutting parameters on the surface roughness of 304 steel was analyzed by establishing variance analysis models. The surface quality profile parameters and the main cutting force under minimum quantity cooling lubrication (MQCL) and dry cutting conditions were analyzed and compared. The characterization of the morphology of the machined surface was evaluated, and the wear mechanisms of the two machining methods were analyzed. A hybrid machining strategy was developed in which dry cutting is used at the beginning of cutting and dry cutting is replaced with MQCL before the quality of the machined surface deteriorates sharply. This strategy obtains the optimal parameter combination through a genetic algorithm. The most important factor affecting the surface roughness was the feed rate, whereas the change in cutting depth had no obvious effect on the surface roughness. In addition, the parameters of low cutting speed and feed rate were advantageous under dry cutting conditions. However, with increases in the feed rate and cutting speed, the peak and valley of the surface profile gradually increased, and the MQCL conditions were more conducive to obtaining a smoother surface. Furthermore, the MQCL and higher cutting speed could reduce the main cutting force. The surface roughness under hybrid cutting was 5.19% and 18.76% lower than that under MQCL and dry cutting, respectively.

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Section: Parameter Analysis Of the Surface Morphologymentioning

confidence: 99%

Surface integrity investigation and multi-objective optimization in high-speed cutting of AISI 304 stainless steel for dry cutting and MQCL conditions

Yinzhi

Zheng

Liu

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part B:

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Wear properties of acrylic dental material 3D printed via digital light processing: Influence of process settings

Vaezipour,

Shabgard,

Kazemi

2024

Proceedings of the Institution of Mechanical Engineers, Part C:

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The digital light processing (DLP) is one of the additive manufacturing methods, renowned for its precision and efficiency, with wide-ranging applications, notably in dentistry. Recent advancements in photocurable resins and DLP technologies have profoundly influenced dentistry. Despite their common clinical use, some resins lack comprehensive empirical studies on their mechanical and wear properties. In addition, analyzing the wear resistance of dental materials manufactured via additive manufacturing is imperative for ensuring their prolonged durability and dependability within authentic oral settings. Profound comprehension of the manner in which these materials withstand abrasive forces ensures their capability to withstand the mechanical strains imposed by chewing and brushing activities, thereby preserving their structural robustness and functional efficacy. The aims of this research are to investigate the effect of DLP process parameter setting, including: layer thickness, exposure time, and light intensity, on the wear resistance of acrylate dental materials. Using a pin-on-disc apparatus, wear tests were conducted. A steel pin, with a diameter of 5 mm, moved linearly over the specimen surface under the speed of 15 m/min and applying a force of 20 N. Scanning electron microscopy (SEM) was employed to examine the worn surface and wear mechanisms. Additionally, Analysis of Variance (ANOVA) was utilized to assess parameter effects and correlations. The findings indicate that parameter configurations exert a considerable influence on wear resistance and represent a cost-effective avenue for enhancing the wear resistance of components produced through additive manufacturing. The results revealed a direct correlation between resin curing and wear resistance, with inadequate or excessive curing leading to increased wear rates. The samples with a layer thickness of 25 µm, exposure time of 7.2 s, and light intensity of 160 W/m2, exhibited the lowest wear rate (11 × 10−2 mm3/min). Conversely, samples with a layer thickness of 100 µm, exposure time of 2.8 s and light intensity of 160 W/m2, demonstrated the highest wear rate (55 × 10−2 mm3/min). Additionally, the analysis of variance confirmed correlations between parameters, noting a negative correlation between intensity and time parameters, and positive correlations among other inter-parameter correlations.

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An experimental and theoretical study of the abrasion performance of digital light processing parts

Cited by 2 publications

References 34 publications

Surface integrity investigation and multi-objective optimization in high-speed cutting of AISI 304 stainless steel for dry cutting and MQCL conditions

Surface integrity investigation and multi-objective optimization in high-speed cutting of AISI 304 stainless steel for dry cutting and MQCL conditions

Wear properties of acrylic dental material 3D printed via digital light processing: Influence of process settings

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