Comparing repeatability and reproducibility of topographic measurement types directly using linear regression analyses of measured heights

K Peta, G Love, CA Brown - Precision Engineering, 2024 - Elsevier
This paper describes and illustrates a convenient, new method for checking repeatability
and reproducibility by direct comparisons of measured heights. Focus variation, confocal …

Approaches for preventing tool wear in sheet metal forming processes

T Trzepieciński - Machines, 2023 - mdpi.com
Sheet metal forming processes, the purpose of which is to give the shaped material
appropriate mechanical, dimensional and shape properties, are characterised by different …

Selection of methods of surface texture characterisation for reduction of the frequency-based errors in the measurement and data analysis processes

P Podulka - Sensors, 2022 - mdpi.com
Processes of surface texture characterisation can be roughly divided into measurement
issues and analysis of the results obtained. Both actions can be fraught with various errors …

[HTML][HTML] Fracture surface topography investigation and fatigue life assessment of notched austenitic steel specimens

W Macek, G Robak, K Żak, R Branco - Engineering Failure Analysis, 2022 - Elsevier
The objectives of this study were to investigate the fracture surface topography of
X8CrNiS18-9 austenitic stainless-steel specimens for different loadings and notch radii and …

[HTML][HTML] Roughness evaluation of turned composite surfaces by analysis of the shape of autocorrelation function

P Podulka, W Macek, B Zima, G Lesiuk, R Branco… - Measurement, 2023 - Elsevier
In this paper, the application of an Autocorrelation Function for the characterisation of
surface topography was validated. The roughness evaluation of turned composite surfaces …

Reduction in errors in roughness evaluation with an accurate definition of the SL surface

P Podulka, W Macek, R Branco, RM Nejad - Materials, 2023 - mdpi.com
Characterization of surface topography, roughly divided into measurement and data
analysis, can be valuable in the process of validation of the tribological performance of …

[HTML][HTML] Topography measurement methods evaluation for entire bending-fatigued fracture surfaces of specimens obtained by explosive welding

P Podulka, W Macek, D Rozumek, K Żak, R Branco - Measurement, 2024 - Elsevier
In this paper, the methods of compensation of differences in the results of entire bending-
fatigued fracture surface topographies were presented. The roughness evaluation was …

Resolving selected problems in surface topography analysis by application of the autocorrelation function

P Podulka - Coatings, 2022 - mdpi.com
In this paper, the validity of the application of an autocorrelation function for resolving some
surface topography measurement problems was presented. Various types of surfaces were …

Effect of bending-torsion on fracture and fatigue life for 18Ni300 steel specimens produced by SLM

W Macek, RM Nejad, SP Zhu, J Trembacz… - Mechanics of …, 2023 - Elsevier
In this study, different fracture surfaces caused by fatigue failure were generated from
18Ni300 steel produced by selective laser melting (SLM). Hollow round bars with a …

Modelling and parameter identification of coefficient of friction for deep-drawing quality steel sheets using the CatBoost machine learning algorithm and neural …

SM Najm, T Trzepieciński, M Kowalik - The International Journal of …, 2023 - Springer
The development of models for the coefficient of friction is difficult due to many factors
influencing its value and many tribological phenomena that accompany contact between …