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Wyświetlanie 1-15 z 367
Tytuł:
A comparison between profile and areal surface roughness parameters
Autorzy:
He, Baofeng
Ding, Siyuan
Shi, Zhaoyao
Powiązania:
https://bibliotekanauki.pl/articles/1849053.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
profile surface roughness
areal surface roughness
filtration techniques
evaluation parameters
Opis:
Surface roughness has an important influence on the service performance and life of parts. Areal surface roughness has the advantage of accurately and comprehensively characterizing surface microtopography. Understanding the relationship and distinction between profile and areal surface roughness is conducive to deepening the study of areal surface roughness and improving its application. In this paper, the concepts, development, and applications of surface roughness in the profile and the areal are summarized from the aspect of evaluation parameters. The relationships and differences between surface roughness in the profile and the areal are analyzed for each aspect, and future development trends are identified.
Źródło:
Metrology and Measurement Systems; 2021, 28, 3; 413-438
0860-8229
Pojawia się w:
Metrology and Measurement Systems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A comparison between profile and areal surface roughness parameters
Autorzy:
He, Baofeng
Ding, Siyuan
Shi, Zhaoyao
Powiązania:
https://bibliotekanauki.pl/articles/1849106.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
profile surface roughness
areal surface roughness
filtration techniques
evaluation parameters
Opis:
Surface roughness has an important influence on the service performance and life of parts. Areal surface roughness has the advantage of accurately and comprehensively characterizing surface microtopography. Understanding the relationship and distinction between profile and areal surface roughness is conducive to deepening the study of areal surface roughness and improving its application. In this paper, the concepts, development, and applications of surface roughness in the profile and the areal are summarized from the aspect of evaluation parameters. The relationships and differences between surface roughness in the profile and the areal are analyzed for each aspect, and future development trends are identified.
Źródło:
Metrology and Measurement Systems; 2021, 28, 3; 413-438
0860-8229
Pojawia się w:
Metrology and Measurement Systems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A comparison between profile and areal surface roughness parameters
Autorzy:
He, Baofeng
Ding, Siyuan
Shi, Zhaoyao
Powiązania:
https://bibliotekanauki.pl/articles/1849009.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
profile surface roughness
areal surface roughness
filtration techniques
evaluation parameters
Opis:
Surface roughness has an important influence on the service performance and life of parts. Areal surface roughness has the advantage of accurately and comprehensively characterizing surface microtopography. Understanding the relationship and distinction between profile and areal surface roughness is conducive to deepening the study of areal surface roughness and improving its application. In this paper, the concepts, development, and applications of surface roughness in the profile and the areal are summarized from the aspect of evaluation parameters. The relationships and differences between surface roughness in the profile and the areal are analyzed for each aspect, and future development trends are identified.
Źródło:
Metrology and Measurement Systems; 2021, 28, 3; 413-438
0860-8229
Pojawia się w:
Metrology and Measurement Systems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The evaluation of the influence of head implant surface roughness on the wear of UHMWPE cup
Autorzy:
Sedlacek, R.
Tuzarova, Z.
Powiązania:
https://bibliotekanauki.pl/articles/286109.pdf
Data publikacji:
2008
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Polskie Towarzystwo Biominerałów
Tematy:
implants
head surface roughness
UHMWPE
Opis:
The aim of this study was the evaluation of the influence of head surface roughness on the wear of the acetabular component of implant. The experiments were executed for the combination of UHMWPE (Ultra High Molecular Weight Polyethylene) implant cup and metal head of implant with several different surface roughnesses. Testing method was based on Pin-on-Disc principle. Finally the recommendation for head surface roughness was established. The special experiments were carried out in accredited “Mechanical Testing Laboratory” (quality system ISO 17025) in collaboration with the Academy of Sciences of the Czech Republic and company BEZNOSKA Corporation - developing and producing bone-substitute biomaterials and implants.
Źródło:
Engineering of Biomaterials; 2008, 11, no. 77-80; 13-14
1429-7248
Pojawia się w:
Engineering of Biomaterials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of Ceramic Brush Treatment on the Surface Quality and Edge Condition of Aluminium Alloy after Abrasive Waterjet Machining
Autorzy:
Matuszak, Jakub
Powiązania:
https://bibliotekanauki.pl/articles/2023313.pdf
Data publikacji:
2021
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
surface roughness
AWJM
brushing
deburring
Opis:
Material separation is one of the basic technological operations. Abrasive water jet machining (AWJM) is a universal cutting method; it is used for almost all structural materials, ranging from easy-to-cut materials such as aluminium alloys to materials that are difficult-to-cut after thermal treatment. In terms of assembly accuracy and product safety, surface quality and edge condition after cutting are of vital importance. Machining with ceramic brushes mounted on the machining centre is one of the methods for improving surface quality and removing burrs after AWJM. The aim of this study is to analyse the influence of machining conditions with ceramic brushes on the surface quality and effectiveness of deburring after abrasive water jet machining of EN AW-7075 aluminium alloy. For all tested brushing treatment conditions lower roughness parameters were obtained compared to the base surface after AWJM. A positive deburring effect was achieved for all fibre types after one brush pass. For the brush with the lowest stiffness fibres a rounded edge was obtained, while for the fibres with higher stiffness – the edges were chamfered.
Źródło:
Advances in Science and Technology. Research Journal; 2021, 15, 3; 254-263
2299-8624
Pojawia się w:
Advances in Science and Technology. Research Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Simulation of Superfinished Surface Formation
Autorzy:
Görög, Augustín
Powiązania:
https://bibliotekanauki.pl/articles/2023949.pdf
Data publikacji:
2021
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
model
simulation
surface roughness
superfinishing
Opis:
The article deals with the simulation of single-oscillating grooves superfinishing. A model of the superfinishing tool was created according to the input information about the tool and the superfinishing process. Using this tool, a simulation of the cutting process was performed. The input parameters for the simulation were the cutting conditions, which determined the paths of tools individual grains (process kinematics). The simulation is realized by gradual removal of the workpiece material by individual grains of the tool. The result of the simulation is the profile of the superfinished surface at an evaluation length of 1.25 mm. It is possible to determine the surface roughness parameters from the profile. Creating and displaying multiple profiles side by side creates a graphical model of the superfinished surface. The simulation can be used for numerical simulation experiments, where both material and energy are saved. The article presents one such experiment together with the results – the surface roughness was influenced by individual factors. The simulation results (surface roughness parameters and surface appearance) were compared with the real superfinished surface on the outer ring of the bearing. This surface was manufactured under mass production conditions. The comparison confirmed that a simulation is a suitable tool for research of abrasive machining methods. At the end of the article is a discussion about a possible improvement of the simulation - considering 3D grains of the tool.
Źródło:
Advances in Science and Technology. Research Journal; 2021, 15, 2; 219-227
2299-8624
Pojawia się w:
Advances in Science and Technology. Research Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The experimental investigation of surface roughness after dry turning of steel S235
Autorzy:
Molenda, Justyna
Powiązania:
https://bibliotekanauki.pl/articles/245799.pdf
Data publikacji:
2019
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
dry turning
turning parameters
turning results
surface roughness
arithmetic average surface roughness value
Opis:
Nowadays lot of scientific work inspired by industry companies was done with the aim to avoid the use of cutting fluids in machining operations. The reasons were ecological and human health problems caused by the cutting fluid. The most logical solution, which can be taken to eliminate all of the problems associated with the use of cooling lubricant, is dry machining. In most cases, however, a machining operation without lubricant finds acceptance only when it is possible to guarantee that the part quality and machining times achieved in wet machining are equalled or surpassed. Surface finish has become an important indicator of quality and precision in manufacturing processes and it is considered as one of the most important parameter in industry. Today the quality of surface finish is a significant requirement for many workpieces. Thus, the choice of optimized cutting parameters is very important for controlling the required surface quality. In the present study, the influence of different machining parameters on surface roughness has been analysed. Experiments were conducted for turning, as it is the most frequently used machining process in machine industry. All these parameters have been studied in terms of depth of cut (ap), feed rate (f) and cutting speed (vc). As workpiece, material steel S235 has been selected. This work presents results of research done during turning realised on conventional lathe CDS 6250 BX-1000 with severe parameters. These demonstrate the necessity of further, more detailed research on turning process results.
Źródło:
Journal of KONES; 2019, 26, 4; 179-184
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Parameters Selection for Electropolishing Process of Products Made of Copper and its Alloys
Autorzy:
Maciąg, T.
Wieczorek, J.
Węcki, B.
Powiązania:
https://bibliotekanauki.pl/articles/356437.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
electropolishing
copper
brass
surface roughness
Opis:
Electropolishing is electrochemical method used in metal working that has a vital role in production of medical apparatus, in food or electric industry. The purpose of this paper is to determine optimal current parameters and time required for conducting electropolishing process from the perspective of changes of surface microgeometry. Furthermore, effect of different types of mechanical working used before electropolishing on final surface state was evaluated by observation in changes of topography. Research was conducted on electrolytic copper and brass. Analysis of surface geometry and its parameters (Ra, Sa) was used as criterion describing efficiency of chemical electropolishing. Results of the experiment allow for current parameter optimization of electrochemical polishing process for selected non-ferrous alloys with preliminary mechanical preparation of the surface.
Źródło:
Archives of Metallurgy and Materials; 2017, 62, 3; 1443-1447
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effects of soil surface roughness on soil processes and remote sensing data interpretation and its measuring techniques - a review
Autorzy:
Herodowicz, Karolina
Piekarczyk, Jan
Powiązania:
https://bibliotekanauki.pl/articles/763024.pdf
Data publikacji:
2018
Wydawca:
Uniwersytet Marii Curie-Skłodowskiej. Wydawnictwo Uniwersytetu Marii Curie-Skłodowskiej
Tematy:
soil surface roughness, tillage treatments, soil processes, remote sensing, soil surface roughness measuring techniques
Opis:
Surface roughness is a very important physical feature of soil, affecting various soil processes and accuracy of remote sensing data interpretation. Thus, there is a need to describe it quantitatively. The main aim of the paper was to show needs and benefits of collecting quantitative information about soil surface roughness which is the most relevant parameter used as an index to predict water and wind erosion. Surface roughness can reduce soil erosion and soil losses even by up to 31%. Thereby, it increases the development of fauna and flora and improves the structure of soil and its biological quality. In the first section of the paper there are presented definitions of soil roughness proposed by different authors. The next section explains how various factors influence soil surface roughness. Then, the categorization of soil surface roughness discussed in literature is presented. The next part of the paper includes information about a role of soil roughness in agricultural, soil science and a hydrology research. Moreover, soil surface roughness plays an important role in a remote sensing of soils. The knowledge of quantitative soil surface roughness allows more accurate interpretation of the soil properties from remote sensing data, because this soil feature can decrease soil spectra even over 70% and makes their analysis difficult. In addition, deepening knowledge about soil roughness will allow more precise conclusions about the amount of reflected shortwave solar radiation indirectly shaping the Earth’s climate. In the final section, the techniques for measuring and indices for describing soil roughness are shown. However, the authors prefer a photogrammetry technique for collecting these data, because it is quick and easy to use, ensuring high resolution and accuracy of data (about 1 mm) and the image processing is currently simplifid as software to process is absolutely affordable.
Źródło:
Polish Journal of Soil Science; 2018, 51, 2
0079-2985
Pojawia się w:
Polish Journal of Soil Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Influence of grinding conditions on the topographic characteristic of machined surfaces
Autorzy:
Żak, K.
Powiązania:
https://bibliotekanauki.pl/articles/100111.pdf
Data publikacji:
2014
Wydawca:
Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych
Tematy:
surface texture
surface roughness
hard machining
grinding
Opis:
This paper compares the ability of grinding processes to enhance functional properties of the surface textures produced. The main objective of such a comparison is to facilitate the decision about precision grinding operations. The experimental study performed includes two grinding operations using electro-corundum Al2O3 and CBN wheels. For this purpose, the topographic features of ground surfaces with the Sa roughness parameter of about 0.2?m were compared. Apart from the set of 3D roughness parameters, the frequency, fractal, wavelet and motif characteristics were analyzed.
Źródło:
Journal of Machine Engineering; 2014, 14, 2; 47-56
1895-7595
2391-8071
Pojawia się w:
Journal of Machine Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Optimization of cutting parameters on surface roughness and productivity when milling wood materials
Autorzy:
Loc, Nguyen Huu
Hung, Trinh Quoc
Powiązania:
https://bibliotekanauki.pl/articles/2052204.pdf
Data publikacji:
2021
Wydawca:
Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych
Tematy:
surface roughness
response surface
milling method
optimization
Opis:
The quality of the machined surface is one of the most important criteria when products are processed. For different materials, there are differentially fitting processing technologies and cutting modes to ensure that the parts have surface roughness in the allowed value range. In this paper, the research on surface roughness of machining tropical wood by milling method is presented. It is necessary to establish and solve the optimal problems with such aims as the highest surface quality, minimum cutting power and the highest productivity in the optimal cutting mode. Using a great amount of experimental planning and many constrained nonlinear optimization problem solving methods, the authors built a process and solved the problem to determine the optimal cutting parameters such as feed per tooth Sz, tool tip radius ρ, depth of cut h, etc. that satisfy the above object. Research object is tropical wood chukrasia and this is the database to design woodworking machines by milling method and choose a reasonable working mode when processing on CNC machines.
Źródło:
Journal of Machine Engineering; 2021, 21, 4; 72-89
1895-7595
2391-8071
Pojawia się w:
Journal of Machine Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analysis of surface roughness of transmission gear teeth made by different rapid prototyping methods
Autorzy:
Budzik, G.
Markowski, T.
Sobola, M.
Powiązania:
https://bibliotekanauki.pl/articles/244106.pdf
Data publikacji:
2008
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
surface roughness
rapid prototyping
bevel gears
Opis:
Article presents analysis of surface roughness of aircraft and vehicle power transmission system gear teeth made by different Rapid Prototyping methods. Gear box models have been made by two rapid prototyping methods: stereolithography (SLA), three dimensional printing (3DP) and two rapid tooling methods: Vacuum Casting (VC), Low Pressure Injection (LPI). Surface roughness for rapid prototyping methods is determined mostly by layered system of building model. It depends on process parameters: layer thickness and model position in working space of RP machine. Vacuum Casting and Low Pressure Injection are Rapid Tooling technologies. For this technology final surface roughness is a reflection of surface parameters of tools (silicon mould, silicon matrix). The paper presents results of surface roughness measurements of gear made by few RP and RT methods. The most important thing was an analysis of surface roughness made by Rapid Tooling methods. In these methods surface roughness depends on surface parameters of basis RP model. For basis RP models finishing processing was applied. This process improves parameters of the surface. This research process allowed to define the influence of chosen RP and RT method and its parameters on surface roughness of gear tooth. It permitted to order rapid prototyping methods for application of power transmission prototype making process.
Źródło:
Journal of KONES; 2008, 15, 2; 29-34
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The effect of the conditions of shot peening the Inconel 718 nickel alloy on the geometrical structure of the surface
Autorzy:
Zaleski, K.
Skoczylas, A.
Brzozowska, M.
Powiązania:
https://bibliotekanauki.pl/articles/102751.pdf
Data publikacji:
2017
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
surface roughness
shot peening
Inconel 718
Opis:
This article presents the research results of roughness and topography of the surface of Inconel 718 nickel alloy after shot peening. The evaluation of stereometric properties of the surface layer of the examined material was performed based on the amplitude, height and Abbott-Firestone curve parameters. The shot peening was carried out on the impulse shot peening stand. The impact energy Ez, distance between the traces xs and the ball diameter dk were changed in the range: Ez = 60 ÷ 240 mJ, xs = 0,15 ÷ 0,5 mm, dk = 3,95 ÷ 12,45 mm. The T8000 RC 120-140 device of the Hommel-Etamic company, along with the software, was used for measuring the surface roughness and for determining the material bearing curve. As a result of the machining, the surface roughness was reduced and the selected functional parameters were improved.
Źródło:
Advances in Science and Technology. Research Journal; 2017, 11, 2; 205-211
2299-8624
Pojawia się w:
Advances in Science and Technology. Research Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Studies on selected properties of surface layer of C45 steel objects after laser cutting and milling
Autorzy:
Zaleski, K.
Skoczylas, A.
Powiązania:
https://bibliotekanauki.pl/articles/103102.pdf
Data publikacji:
2014
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
milling
laser cutting
surface roughness
microhardness
Opis:
The article presents the results of studying the effects of technological parameters of milling upon surface roughness and microhardness of C45 steel objects after laser cutting. The metallographic structure formed as an effect of cutting by laser was also analyzed. The milling was performed on a FV-580a vertical machining centre. Depth of cut and feed per tooth were changed within the following range: ap = 0.09–0.18 mm and f z = 0.02–0.17 mm/tooth. To measure the surface roughness a Surtronic 3+ profile graphometer was used, whereas microhardness was measured with the use of a Leco LM 700AT microhardness tester. The surface roughness was significantly improved as a result of milling. The laser beam input and output zones were eliminated. Only a part of the layer hardened by laser cutting was removed while milling, in effect of which after milling the hardness of surface layer is much higher than hardness of the core.
Źródło:
Advances in Science and Technology. Research Journal; 2014, 8, 23; 26-32
2299-8624
Pojawia się w:
Advances in Science and Technology. Research Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Measurement, modeling and evaluation of surface parameter using capacitive-sensor-based measurement system
Autorzy:
Murugarajan, A.
Samuel, G. L.
Powiązania:
https://bibliotekanauki.pl/articles/221773.pdf
Data publikacji:
2011
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
capacitive sensor
surface roughness
machined surfaces
Opis:
Surface roughness parameter prediction and evaluation are important factors in determining the satisfactory performance of machined surfaces in many fields. The recent trend towards the measurement and evaluation of surface roughness has led to renewed interest in the use of newly developed non-contact sensors. In the present work, an attempt has been made to measure the surface roughness parameter of different machined surfaces using a high sensitivity capacitive sensor. A capacitive response model is proposed to predict theoretical average capacitive surface roughness and compare it with the capacitive sensor measurement results. The measurements were carried out for 18 specimens using the proposed capacitive-sensor-based non-contact measurement setup. The results show that surface roughness values measured using a sensor well agree with the model output. For ground and milled surfaces, the correlation coefficients obtained are high, while for the surfaces generated by shaping, the correlation coefficient is low. It is observed that the sensor can effectively assess the fine and moderate rough-machined surfaces compared to rough surfaces generated by a shaping process. Furthermore, a linear regression model is proposed to predict the surface roughness from the measured average capacitive roughness. It can be further used in on-machine measurement, on-line monitoring and control of surface roughness in the machine tool environment.
Źródło:
Metrology and Measurement Systems; 2011, 18, 3; 403-418
0860-8229
Pojawia się w:
Metrology and Measurement Systems
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 367

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