Πλοήγηση ανά Θέμα "Surface roughness"

Appraisal of road pavement evaluation methods

Papageorgiou G. (2019)

Road pavement evaluation methods are based either on simple index of a surface characteristic, such as International Roughness Index (IRI) for roughness, Rut Depth (RD) for rutting, Sideway Force Coefficient (SFC) for ...

A comparative investigation of Taguchi and full factorial design for machinability prediction in turning of a titanium alloy

Kechagias J.D., Aslani K.-E., Fountas N.A., Vaxevanidis N.M., Manolakos D.E. (2020)

This study investigates the machinability performance during dry longitudinal turning of Ti-6Al-4V-ELI titanium alloy using Taguchi Experimental Design (TED) and full factorial design (FFD). Main cutting force (Fc) and ...

Considering bearing curves of roughness on face milled surfaces of steel

Petropoulos, G.; Pandazaras, C.; Stamos, I. (2001)

The present contribution describes the statistical analysis of bearing (Abbott) curves of surface roughness produced by face milling of steel. Bearing curves parameters are found to closely correlate with feed rate and ...

Dependence of friction coefficient on the resolution of asperities in metallic rough surfaces under cyclic loading

Panagouli O.K., Mastrodimou K. (2017)

In this paper the friction mechanism that is developed between metallic rough interfaces with irregularities of different scales, submitted to cyclic loading is studied. The main purpose of the paper is to investigate how ...

EFFECTS of MULTI-SCALE STRUCTURE and FRACTAL DIMENSION on the FRICTION MECHANISM in ROUGH SURFACES under HORIZONTAL DYNAMIC EXCITATION

Panagouli O.K. (2019)

Tribological information obtained for contacts with multiple-asperity interaction is a challenging task. In this work, the friction mechanism that is developed between rough interfaces with asperities of different geometry ...

An experimental investigation of surface roughness in 3D-printed PLA items using design of experiments

Fountas N.A., Kitsakis K., Aslani K.-E., Kechagias J.D., Vaxevanidis N.M. (2022)

This work investigates the effect of 3D-printing parameters on surface roughness in polylactic acid printed material by adopting Taguchi's design of experiments approach. The control parameters under study were: number of ...

Integrated Modeling of Agronomic and Water Resources Management Scenarios in a Degraded Coastal Watershed (Almyros Basin, Magnesia, Greece)

Lyra A., Loukas A., Sidiropoulos P., Voudouris K., Mylopoulos N. (2022)

The scope of this study is to assess the effects of agronomic and water resources management scenarios on groundwater balance, seawater intrusion, and nitrate pollution and the comparison of the developed scenarios relative ...

An investigation into abrasive water jet machining of TRIP sheet steels using Taguchi technique and regression models

Kechagias, J.; Ntziantzias, I.; Fountas, N.; Vaxevanidis, N. M. (2013)

An experimental investigation of abrasive water-jet machining (AWJM) of transformation induced plasticity (TRIP) multi-phase sheet steels using design of experiments was carried out. The quality characteristics selected ...

An investigation of surface quality characteristics of 3D printed PLA plates cut by CO2 laser using experimental design

Kechagias J.D., Ninikas K., Petousis M., Vidakis N., Vaxevanidis N. (2021)

In this work, two typical surface characteristics, i.e., mean surface roughness and angle of the kerf during laser processing of 3D-printed Polylactic Acid (PLA) plates with 4.00 mm in thickness, are investigated. A carbon ...

Laser cutting of 3D printed acrylonitrile butadiene styrene plates for dimensional and surface roughness optimization

Kechagias J.D., Ninikas K., Petousis M., Vidakis N. (2022)

3D printing (3DP) of polymers using fused filament fabrication (FFF) is not yet massively adopted in industrial environments due to shape accuracy and surface integrity limitations. However, the FFF process combined with ...

Mapping evapotranspiration coefficients in a temperate maritime climate using the metric model and landsat TM

Spiliotopoulos M., Holden N.M., Loukas A. (2017)

The applicability of a land surface temperature (LST)-evapotranspiration (ET) regression model to estimate ET fraction (ETrF) was tested in the temperate maritime climate of Central Ireland. In this study, the Mapping ET ...

Modeling of abrasive water jet machining using Taguchi method and artificial neural networks

Pappas, M.; Ntziantzias, I.; Kechagias, J.; Vaxevanidis, N. (2011)

This work presents a hybrid approach based on the Taguchi method and the Artificial Neural Networks (ANNs) for the modeling of surface quality characteristics in Abrasive Water Jet Machining (AWJM). The selected inputs of ...

Parameter optimization during finish end milling of Al alloy 5083 using robust design

Kechagias, J. D.; Ziogas, C. K.; Pappas, M. K.; Ntziatzias, I. E. (2011)

The influence of cutter geometry and cutting parameters during end milling on the surface texture of aluminium (Al) alloy 5083 was experimentally investigated. Eighteen pockets were manufactured having different combination ...

Prediction of surface roughness in turning using orthogonal matrix experiment and neural networks

Kechagias, J.; Iakovakis, V.; Petropoulos, G.; Maropoulos, S.; Karagiannis, S. (2010)

A neural network modeling approach is presented for the prediction of surface texture parameters during turning of a copper alloy (GC-CuSnl2). Test specimens in the form of near-to-net-shape bars and a titanium nitride ...

A robust methodology for optimizing the topology and the learning parameters of an ANN for accurate predictions of laser-cut edges surface roughness

Kechagias J.D., Tsiolikas A., Petousis M., Ninikas K., Vidakis N., Tzounis L. (2022)

The Feed-Forward and Backpropagation Artificial Neural Networks (FFBP-ANN) are generally employed for cut surfaces quality characteristics predictions. However, the determination of the neurons on the hidden layer and the ...