Effects of different cutting conditions on the surface roughness parameters of iron-copper-carbon powder metallurgy composites

Czampa, Miklós; Bíró, István; Szalay, Tibor

doi:10.1504/ijmmm.2017.087617

Cited by 4 publications

(3 citation statements)

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“…First, response surface methodology (RSM) was used to statistically model the thrust force of the drilling process. According to previous investigations [32][33][34][35][36], the effects of the applied process parameters on the thrust force are expected to be nonlinear; therefore, a second-degree polynomial model was used, as expressed by Eq. (2).…”

Section: Methodsmentioning

confidence: 99%

Analysis and modelling of thrust force in drilling of basalt and carbon fibre-reinforced polymer (BFRP and CFRP) composites

Magyar

Geier

2023

J Braz. Soc. Mech. Sci. Eng.

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Currently, the use of sustainable products and technologies is growing; consequently, mineral-origin basalt fibre-reinforced polymer (BFRP) composites are becoming more popular in industries. Although BFRP parts require mechanical drilling operations for manufacturing holes for assembly, many challenges make the drilling process difficult. Considering that the cutting force is one of the main parameters characterising the drilling process, this study aims to analyse the influence of feed (mm/rev) and cutting speed (m/min) on the thrust force and model the thrust force in the drilling of BFRP composites through response surface methodology (RSM) and advanced statistical modelling methods. In order to determine main and interaction effects and to calculate the regression coefficients and model parameters, mechanical drilling experiments were performed, and the thrust force was recorded. The raw force data were processed using fast Fourier transformation-based low-pass filtering, and then the calculated thrust force parameters were evaluated relative to various feeds and cutting speeds. In addition, results were compared with those of carbon fibre-reinforced polymer composites. The results of the validation experiments show that both RSM and advanced statistical models accurately predict the thrust force in BFRPs of 96.74% and 95.01%, respectively. However, the advanced statistical model can describe not only the maximum values of the force but also its characteristics at a coefficient of determination of 0.68.

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Section: Methodsmentioning

confidence: 99%

Analysis and modelling of thrust force in drilling of basalt and carbon fibre-reinforced polymer (BFRP and CFRP) composites

Magyar

Geier

2023

J Braz. Soc. Mech. Sci. Eng.

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“…Measuring of surface roughness profile of machined surfaces of quasi-hard materials (like aluminum alloys, titanium alloys, etc.) can be sufficiently accurately and easily conducted by a contact profilometer [47][48][49][50]. However, materials with lower hardness properties (like plastics, plasticine, etc.)…”

Section: Usability Of Contact Profilometermentioning

confidence: 99%

Analysis of Characteristics of Surface Roughness of Machined CFRP Composites

Geier

Pereszlai

2019

Period. Polytech. Mech. Eng.

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Measuring and characterizing of surface roughness of machined surfaces of carbon fiber reinforced polymer (CFRP) composites are difficult due to the occurrence of special surface damages (delamination, uncut fibers, fiber pull-outs or micro-cracks, etc.). The main objective of the present study is to analyze the characteristics of surface roughness of machined unidirectional CFRP in detail. Numerous conventional drilling, helical milling, and edge trimming experiments were carried out with different cutting tools in order to analyze the influence of them on the average surface roughness (Ra), on the roughness depth (Rz) and on the Rz /Ra parameter. The surface roughness was measured by a Mitutoyo SJ-400 contact profilometer and an Alicona Infinite Focus confocal microscope. The usability of the contact profilometer was experimentally tested and compared its results with the results of the confocal microscope. Experimental results show that the contact profilometer is suitable for measuring surface roughness of CFRP, furthermore, values of Rz /Ra of drilled and edge trimmed surfaces of unidirectional CFRP are changing in a wide interval: from 5 to 14 μm/μm due to the special surface damages. Based on this research, the machinability analysis of CFRP is suggested to be extended to the analysis of the Rz /Ra parameter.

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“…Such equipment must provide both high productivity and processing accuracy [9]. Providing smooth motion controlled axes equipment improves productivity and processing quality machined surface [10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Investigation of the Required Discreteness of Interpolation Movement Parameters in Cyber-physical Systems

Kombarov

Tsegelnyk

Plankovskyy

et al. 2021

Period. Polytech. Mech. Eng.

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Improving the accuracy, reliability, and performance of cyber-physical systems such as high-speed machining, laser cutting, welding and cladding etc. is one of the most pressing challenges in modern industry. CNC system carries out data processing and significantly affect on accuracy of operation such equipment. The paper considers the problem of controlled axes motion differential characteristics data processing in the internal representation of the discrete space of the CNC system. Equations for determining the required discreteness of the differential characteristics position and resolution, such as the speed, acceleration, and jerk are proposed. For the most widely used CNC equipment specific discreteness and resolution values have been determined.

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Effects of different cutting conditions on the surface roughness parameters of iron-copper-carbon powder metallurgy composites

Cited by 4 publications

References 0 publications

Analysis and modelling of thrust force in drilling of basalt and carbon fibre-reinforced polymer (BFRP and CFRP) composites

Analysis and modelling of thrust force in drilling of basalt and carbon fibre-reinforced polymer (BFRP and CFRP) composites

Analysis of Characteristics of Surface Roughness of Machined CFRP Composites

Investigation of the Required Discreteness of Interpolation Movement Parameters in Cyber-physical Systems

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