17 Result(s)
within
Szymon Wojciechowski
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Chapter and Conference Paper
Analysis of Surface Roughness and Vibrations During Micro Ball End Milling with Various Ram** Directions
This study focuses on dependencies between the tool effective diameter and dynamics, as well as the machined surface quality obtained in the micro ball end milling of hardened steel with various ram** direct...
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Chapter and Conference Paper
Optimization of Surfacing Modes for a Wear-Resistant Alloy
Using optimization in the modernization of existing surfacing materials for various load conditions and surfacing technology is relevant and was considered in this paper. The technology was proposed, and the s...
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Article
Artificial intelligence systems for tool condition monitoring in machining: analysis and critical review
The wear of cutting tools, cutting force determination, surface roughness variations and other machining responses are of keen interest to latest researchers. The variations of these machining responses result...
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Chapter and Conference Paper
Perspectives of Lean Management Using the Poka Yoke Method
The paper provides a theoretical perspective on Lean management, which is very often mentioned in connection with manufacturing companies. In the article, we present and offer an overview of Lean management us...
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Chapter and Conference Paper
Analysis of Extractive Text Summarization Methods as a Binary Classification Problem
One of the critical challenges for natural language processing methods is the issue of automatic content summarization. The enormous increase in the amount of data delivered to users by news services leads to ...
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Chapter and Conference Paper
Adapting K-Means Algorithm for Pair-Wise Constrained Clustering of Imbalanced Data Streams
Contemporary man is addicted to digital media and tools supporting his daily activities, which causes the massive increase of incoming data, both in volume and frequency. Due to the observed trend, unsupervise...
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Chapter and Conference Paper
Multi-objective Evolutionary Undersampling Algorithm for Imbalanced Data Classification
The classification of imbalanced data is an important topic of research conducted in recent years. One of the commonly used techniques for dealing with this problem is undersampling, aiming to balance the trai...
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Chapter and Conference Paper
Analysis of Cutting Force and Power Under the Conditions of Minimized Cooling in the Process of Turning AISI-1045 Steel with the Use of the Parameter Space Investigation Method
The work presents methods of cooling during turning of AISI-1045 steel: dry machining, minimum quantity cooling (MQC) and minimum quantity cooling with EP/AW (MQC + EP/AW) additives. Due to the increased numbe...
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Chapter and Conference Paper
Employing Decision Templates to Imbalanced Data Classification
Data difficulties as imbalanced class distribution cause that the methods which can produce reliable predictive models remain a focus of intense research. This work attempts employing the concept of Decision Temp...
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Chapter and Conference Paper
The Influence of the Application of EP Additive in the Minimum Quantity Cooling Lubrication Method on the Tool Wear and Surface Roughness in the Process of Turning 316L Steel
The paper presents the influence of the application of the EP additive based on pure phosphor in minimum quantity cooling lubrication. During investigation, three methods of cooling the cutting zone have been...
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Chapter and Conference Paper
Hybrid Numerical-Analytical Approach for Force Prediction in End Milling of 42CrMo4 Steel
This paper presents computational method for prediction of cutting force components during end milling process. Introduced method is a hybrid model combining finite element analysis (FEA) with classical analyt...
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Chapter and Conference Paper
The Influence of EP/AW Addition in the MQL Method on the Parameters of Surface Geometrical Structure in the Process of Turning 316L Steel
The methods of cooling with minimum lubrication, MQL, and with minimum cooling and lubrication, MQCL, are often applied in machining nowadays due to their ecological and environmental advantages. The MQL and ...
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Article
Effects of extreme pressure and anti-wear additives on surface topography and tool wear during MQCL turning of AISI 1045 steel
The paper presents an original study of the influence of extreme pressure and anti-wear (EP/AW) additives on the surface topography of double-phase steel during turning with different cooling media and variabl...
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Chapter and Conference Paper
An Algorithm for Selective Preprocessing of Multi-class Imbalanced Data
In this paper we propose a new algorithm called SPIDER3 for selective preprocessing of multi-class imbalanced data sets. While it borrows selected ideas (i.e., combination of relabeling and local resampling) f...
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Article
Open AccessSurface texture formation in precision machining of direct laser deposited tungsten carbide
This paper focuses on an analysis of the surface texture formed during precision machining of tungsten carbide. The work material was fabricated using direct laser deposition (DLD) technology. The experiment i...
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Article
Open AccessStructural and Microhardness Changes After Turning of the AISI 1045 Steel for Minimum Quantity Cooling Lubrication
This work presents the cooling effect under minimum quantity cooling lubrication and dry cutting on structural changes and microhardness of the ferritic-pearlitic AISI 1045 steel after turning. Due to the fact...
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Chapter and Conference Paper
Application of Preprocessing Methods to Imbalanced Clinical Data: An Experimental Study
In this paper we describe an experimental study where we analyzed data difficulty factors encountered in imbalanced clinical data sets and examined how selected data preprocessing methods were able to address ...
