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Tytuł:
Application of a Fuzzy Inference System for the Optimization of Material Removal Rate and Multiple Surface Roughness Characteristics in the Machining of GFRP Polyester Composites
Autorzy:
Singh, A.
Datta, S.
Mahapatra, S. S.
Powiązania:
https://bibliotekanauki.pl/articles/375921.pdf
Data publikacji:
2013
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
GFRP
DOE
Fuzzy Inference System (FIS)
Taguchi method
Opis:
This paper presents a multi-objective extended optimization methodology applied in the machining of a randomly oriented GFRP rod. Design of Experiment (DOE) has been selected based on a L9 orthogonal array design with varying process control parameters like: spindle speed, feed rate and depth of cut. Multiple surface roughness parameters of the machined FRP product along with the Material Removal Rate (MRR) of the machining process have been optimized simultaneously. The Fuzzy Inference System (FIS) has been proposed for providing feasible means for the meaningful aggregation of multiple objective unctions into an equivalent single performance index (MPCI). This Multi-Performance Characteristic Index (MPCI) has been optimized using the Taguchi method. The approach adapted here is capable of overcoming limitations/assumptions of existing optimization methodologies available in the literature.
Źródło:
Decision Making in Manufacturing and Services; 2013, 7, 1-2; 19-42
1896-8325
2300-7087
Pojawia się w:
Decision Making in Manufacturing and Services
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Application of quality shaping methods in the work environment improvement. A case of theoretical frames
Zalecenia dotyczące systemu monitoringu podziemnych magazynów gazu
Autorzy:
Górny, A.
Powiązania:
https://bibliotekanauki.pl/articles/409710.pdf
Data publikacji:
2014
Wydawca:
STE GROUP
Tematy:
work environment improvement
shaping methods
FMEA
QFD
DOE
podziemne magazynowanie gazu (PMG)
monitorowanie i kontrola
monitorowanie struktury
podejście jakościowo-wskaźnikowe
Opis:
Businesses, which typically operate in highly changeable settings, are forced to make constant adjustments to meet legislative requirements concerning employment and the performance of work. To that end, they need to identify tools for improving their work processes. By employing quality management methods to upgrade their working environments, enterprises gain the ability to satisfy the needs and expectations of their customers, including the internal customers who rely on the processes carried out by their employees. The effort not only helps them boost the quality, reliability, flexibility and cost-efficiency of their processes but also allows them to comply with legislative/regulatory requirements. In doing so, they bring their system into conformity with any safety policies that are in place in their organizations. The article discusses the option of employing quality-oriented process design methods (FMEA, QFD and DOE) to improve working environments. The author describes some of the basic prerequisites for their use aimed at boosting the planning and deployment of improvement measures in areas related to the working environment.
W artykule, zgodnie z „podejściem procesowym” ISO 9000, wykazana została konieczność stworzenia systemu monitoringu i kontroli podziemnego magazynowania gazu, w tym: obiektów, parametrów, metod, częstotliwości działań naprawczych, który wykonany zostanie na podstawie wzoru strukturalnego cyklu monitoringu. Podejście jakościowo-wskaźnikowe pozwala na definiowanie złożonych kryteriów oszacowania efektywności działania, które będą pomocne w podejmowaniu skutecznych decyzji w zakresie zarządzania w odpowiednim czasie, w tym również z punktu widzenia ochrony środowiska.
Źródło:
Management Systems in Production Engineering; 2014, 3 (15); 106-111
2299-0461
Pojawia się w:
Management Systems in Production Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Application of the Design of Experiments theory in laboratory... classes for future science teachers
Autorzy:
Nodzyńska, Małgorzata
Kopek-Putała, Wioleta
Powiązania:
https://bibliotekanauki.pl/articles/472610.pdf
Data publikacji:
2018
Wydawca:
Uniwersytet Pedagogiczny im. Komisji Edukacji Narodowej w Krakowie
Tematy:
DOE theory
Designing Chemical Experiments
laboratory
Źródło:
Annales Universitatis Paedagogicae Cracoviensis. Studia ad Didacticam Biologiae Pertinentia; 2018, VIII; 112-117
2083-7267
2450-3487
Pojawia się w:
Annales Universitatis Paedagogicae Cracoviensis. Studia ad Didacticam Biologiae Pertinentia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Challenges for the DOE methodology related to the introduction of Industry 4.0
Autorzy:
Pietraszek, Jacek
Radek, Norbert
Goroshko, Andrii V.
Powiązania:
https://bibliotekanauki.pl/articles/1839493.pdf
Data publikacji:
2020
Wydawca:
Stowarzyszenie Menedżerów Jakości i Produkcji
Tematy:
DOE
industry 4.0
data-driven approaches
uncertainty
przemysł 4.0
niepewność
Opis:
The introduction of solutions conventionally called Industry 4.0 to the industry resulted in the need to make many changes in the traditional procedures of industrial data analysis based on the DOE (Design of Experiments) methodology. The increase in the number of controlled and observed factors considered, the intensity of the data stream and the size of the analyzed datasets revealed the shortcomings of the existing procedures. Modifying procedures by adapting Big Data solutions and data-driven methods is becoming an increasingly pressing need. The article presents the current methods of DOE, considers the existing problems caused by the introduction of mass automation and data integration under Industry 4.0, and indicates the most promising areas in which to look for possible problem solutions.
Źródło:
Production Engineering Archives; 2020, 26, 4; 190-194
2353-5156
2353-7779
Pojawia się w:
Production Engineering Archives
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Designing Cement Mortars Modified with Cork and Rubber Waste Using Theory of the Experiment
Autorzy:
Dębska, Bernardeta
Krasoń, Joanna
Lichołai, Lech
Powiązania:
https://bibliotekanauki.pl/articles/124330.pdf
Data publikacji:
2019
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
rubber waste
cork waste
cement mortars
Design of Experiments
DoE
Response Surface Methodology
RSM
Opis:
The article concerns the possibility of obtaining modified cement mortars and assessing their selected properties, i.e. bending and compressive strength, volume density of hardened mortars and water absorption. The modification consisted in a partial (0–50% vol.) substitution of sand by waste, crushed rubber, and cork. In the mortar design process, the theory of the experiment was used. The central composite design used available in the Statistica software package was response surface. This approach allowed to significantly reduce the number of experiments, reduce costs, and at the same time keep the maximum information about the mortars tested. The conducted research showed that waste materials can be an alternative to natural aggregates in the process of obtaining light mortars.
Źródło:
Journal of Ecological Engineering; 2019, 20, 9; 121-130
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Determination the effect of factors affecting the tensile strength of fabric conveyor belts
Ocena wpływu czynników na wytrzymałość na rozciąganie taśm przenośnikowych tkaninowo – gumowych
Autorzy:
Ambriško, L.
Marasová, D.
Grendel, P.
Powiązania:
https://bibliotekanauki.pl/articles/301577.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Polskie Naukowo-Techniczne Towarzystwo Eksploatacyjne PAN
Tematy:
mechanical testing
tension
conveyor belt
DOE method (Design of Experiments)
testy mechaniczne
napięcie
taśma przenośnikowa
metoda DOE
Opis:
The Design of experiment (DOE) method was used in this paper to rubber conveyor belt tension testing. Using DOE method were from experimentally obtained data established effects of factors and interactions that affect the value of the measured strength and also were determined regression models, which apply input and output variables to the relation. The regression model presents the complete multifactor experiment that contains main factors and interactions.
Metoda planowania eksperymentu (DOE) w artykule użyta do testowania napięcia taśm przenośnikowych tkaninowo – gumowych. Korzystanie z metody DOE były ustalonych poszczególnych czynników oraz ich interakcji ze danych uzyskanych w sposób doświadczalny. Czynniki i interakcje wpływające na wartość zmierzonej wytrzymałośći, a także określono modele regresji, wykazającego związki pomiędzy zmiennymi wejściowymi i wyjściowymi. Model regresyjny przedstawia kompletny wieloczynnikowy eksperyment obejmujący podstawowe zmienne oraz ich interakcje.
Źródło:
Eksploatacja i Niezawodność; 2016, 18, 1; 110-116
1507-2711
Pojawia się w:
Eksploatacja i Niezawodność
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Development of a method for finding the optimal solution when upgrading a motorcycle engine
Autorzy:
Vrublevskyi, Oleksandr
Wojnowski, Radomir
Powiązania:
https://bibliotekanauki.pl/articles/298245.pdf
Data publikacji:
2019
Wydawca:
Uniwersytet Warmińsko-Mazurski w Olsztynie
Tematy:
spark ignition engine
thermodynamic cycle simulations
optimization
design of experiments
DoE
Monte Carlo method
Nonlinear Programming Quadratic Line search
NLPQL
Opis:
This paper describes a method for finding the optimal parameters of a spark-ignition engine gas exchange system for a motorcycle. The vectors of the initial data for filling the parameter space, in which the search for the optimal solution has been made, have been formed through methods of experiment planning and technique nonlinear programming quadratic line search. As the quality criteria, the engine power has been used at selected points of the external speed characteristic. The results of the work have shown how using the proposed optimization method allows modernization of a gas exchange systems in order to increase the engine power.
Źródło:
Technical Sciences / University of Warmia and Mazury in Olsztyn; 2019, 22(2); 135-149
1505-4675
2083-4527
Pojawia się w:
Technical Sciences / University of Warmia and Mazury in Olsztyn
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Digital Synthesis of Sound Generated by Tibetan Bowls and Bells
Autorzy:
Gołaś, A.
Filipek, R.
Powiązania:
https://bibliotekanauki.pl/articles/177659.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
sound synthesis
coupled fields
FEM
DOE
response surface methodology
Opis:
The aim of this paper is to present methods of digitally synthesising the sound generated by vibroacoustic systems with distributed parameters. A general algorithm was developed to synthesise the sounds of selected musical instruments with an axisymmetrical shape and impact excitation, i.e., Tibetan bowls and bells. A coupled mechanical-acoustic field described by partial differential equations was discretized by using the Finite Element Method (FEM) implemented in the ANSYS package. The presented synthesis method is original due to the fact that the determination of the system response in the time domain to the pulse (impact) excitation is based on the numerical calculation of the convolution of the forcing function and impulse response of the system. This was calculated as an inverse Fourier transform of the system’s spectral transfer function. The synthesiser allows for obtaining a sound signal with the assumed, expected parameters by tuning the resonance frequencies which exist in the spectrum of the generated sound. This is accomplished, basing on the Design of Experiment (DOE) theory, by creating a meta-model which contains information on its response surfaces regarding the influence of the design parameters. The synthesis resulted in a sound pressure signal in selected points in space surrounding the instrument which is consistent with the signal generated by the actual instruments, and the results obtained can improve them.
Źródło:
Archives of Acoustics; 2016, 41, 1; 139-150
0137-5075
Pojawia się w:
Archives of Acoustics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Experimental studies for bearings degradation monitoring at an early stage using analysis of variance
Autorzy:
Zarour, D.
Meziani, S.
Thomas, M.
Powiązania:
https://bibliotekanauki.pl/articles/328396.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Polskie Towarzystwo Diagnostyki Technicznej PAN
Tematy:
ANOVA
DOE
time descriptors
bearing fault
analiza wariancji
łożysko
usterka
deskryptory czasu
Opis:
This work presents a procedure for bearing degradation monitoring at an early stage. The analysis of variance (ANOVA) coupled with Tukey’s test is used to single out the suitable parameters to follow the fault size evolution ranging from 50 µm to 150µm. The Tukey's criterion is adopted in this case to study the ability of time and frequency indicators. The rotational speed, centrifugal load and fault size are considered as independent variables while the time and frequency indicators are taken as dependent variables. The experiments are performed on bearings having a fault on outer race. Based on the results of this study, the Kurtosis and Skewness show a good ability to assess the evolution of degradation in the bearings at an early stage. The paper discusses the weakness of the time and frequency indicators.
Źródło:
Diagnostyka; 2018, 19, 4; 81-87
1641-6414
2449-5220
Pojawia się w:
Diagnostyka
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Influence of Particle Size and Load on Loss of Material in Manganese-Steel Material: an Experimental Investigation
Autorzy:
Sinha, R.
Mukhopadhyay, A. K.
Powiązania:
https://bibliotekanauki.pl/articles/354746.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Mn-steel
abrasive wear
stacking fault energy
FESEM
DOE
Opis:
The present study explores the influence of variables like particle size of coal, load, speed and sliding distance on weight loss in manganese-steel (Mn-steel). The observations are made using pin-on-disc apparatus. Specimen prepared from Mn-steel used for the wear test. The size and shape of specimen is in accordance with ASTM G99 standard. From design of experiment (DOE) procedure the variables load were altered to assess the weight loss in material. It is observed that with the increase in particle size and load, the weight loss increases when other variables are constant. Mn-steel shows decrease in weight loss at higher load due to property of dipole interaction and stacking fault energy (SFE). Decrease in weight loss at higher load results in transition in wear mechanism from scratch to groove formation as observed under field emission scanning electron microscope (FESEM).
Źródło:
Archives of Metallurgy and Materials; 2018, 63, 1; 359-364
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Influence of welding parameters of resistance spot welding on joining aluminum with copper
Autorzy:
Sar, Mohammed Helan
Ridha, Munaf Hashim
Husain, Imad M.
Barrak, Osamah Sabah
Hussein, Sabah Khammass
Powiązania:
https://bibliotekanauki.pl/articles/2174202.pdf
Data publikacji:
2022
Wydawca:
Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:
zgrzewanie oporowe
aluminium
miedź
resistance spot welding (RSW)
aluminum (Al)
copper
RSW parameter
DOE
Opis:
The resistance spot welding (RSW) method was used to join aluminum alloy AA 1050 and copper alloy UNS C50100 sheets. Mechanical properties of the joints were examined. The influence of welding process parameters on tensile shear force of the joints was discussed. The design of experiments (DOE) method was used to analyze the influence of welding parameters on the mechanical properties of the joints. Three RSW parameters were used: welding current, squeeze time, and welding time. The results showed that the joint shear stress increased with increasing the welding current until a value of 12000 Amp. Then the shear stress decreased. The tensile shear stress increased with increasing the welding and squeeze time. As a consequence, it can be possible to weld copper with aluminum by RSW.
Źródło:
International Journal of Applied Mechanics and Engineering; 2022, 27, 2; 217--225
1734-4492
2353-9003
Pojawia się w:
International Journal of Applied Mechanics and Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Investigation on the effect of the vibratory peening process parameters on Almen intensity
Autorzy:
Paques, Maxime
Miao, Hong Yan
Changeux, Benoit
Turenne, Sylvain
Badreddine, Jawad
Martin, Etienne
Powiązania:
https://bibliotekanauki.pl/articles/24084748.pdf
Data publikacji:
2023
Wydawca:
Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych
Tematy:
vibratory peening
almen intensity
DOE method
Opis:
Vibratory peening is a mechanical surface treatment process to improve both the fatigue life and smooth surface finish of metallic components in a single operation. Almen intensity is a significant parameter to relate the compressive residual stresses induced by the peening processes. In this study, the design of experiments (DOE) was used to investigate the effect of seven vibratory peening process parameters on Almen intensity. A specific vibratory peening machine, with the tub vibrating in a vertical pattern and resting on airbags, was built. Two empirical linear models were fitted. First, a screening model with primary effects showed that the media mass, airbag pressure, specimen longitudinal position, and lubrication rate have minor influence on Almen intensity. Secondly, a definitive model showed that high eccentricity, high frequency, and deep specimen immersion are required to reach high Almen intensities. The complex interactions between eccentricity, immersion depth, and frequency are described.
Źródło:
Journal of Machine Engineering; 2023, 23, 3; 98--115
1895-7595
2391-8071
Pojawia się w:
Journal of Machine Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Joining of carbon steel AISI 1006 to aluminum alloy AA6061-T6 via friction spot joining technique
Autorzy:
Ridha, Munaf Hashim
Saad, Mursal Luaibi
Abdullah, Isam Tareq
Barrak, Osamah Sabah
Hussein, Sabah Khammass
Hussein, Abbas Khammas
Powiązania:
https://bibliotekanauki.pl/articles/27312396.pdf
Data publikacji:
2022
Wydawca:
Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:
stal węglowa
tarcie
aluminium
friction spot
joining
AA6061
carbon steel AISI 1006
DOE
Opis:
This work aims to join sheets of carbon steel to aluminum alloy AA6061. A lap joint arrangement was used with a joint lap area of dimensions *25 25 mm . The joining procedure was carried out using a rotating tool of 10 mm shoulder diameter. Three process parameters, with three levels for each parameter, were selected to investigate their effects on joints quality. The parameter’s levels for each experiment were designed using the design of the experiment method (DOE). The results indicated that the two materials were joined by a mechanical interlock at an interface line, without formation of intermetallic compounds. The shear force of the joint reached an ultimate value of .4 82kN . The shear force of the joint improved by increasing plunging depth of the tool. Samples of minimum shear force value failed by a pull-outing aluminum metal from the carbon steel specimen. Samples of higher shear force value exhibited a shear mode of fracture. Increasing the rotating speed and decreasing pre-heating increased the process temperature.
Źródło:
International Journal of Applied Mechanics and Engineering; 2022, 27, 4; 1--12
1734-4492
2353-9003
Pojawia się w:
International Journal of Applied Mechanics and Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Landslide stability analysis with the use of the design of experiments method – case study of souk ahras, Algeria
Autorzy:
Charef, Nouar
Mezhoudi, Issam
Boumezbeur, Abderrahmane
Harrat, Nabil
Powiązania:
https://bibliotekanauki.pl/articles/2201668.pdf
Data publikacji:
2022
Wydawca:
Uniwersytet Rolniczy im. Hugona Kołłątaja w Krakowie
Tematy:
landslide
Souk-Ahras region
numerical modeling
safety factor
geotechnical parameters
design of experiments DoE
response surface methodology
RSM
osuwisko
region Souk-Ahras
modelowanie numeryczne
współczynnik bezpieczeństwa
parametry geotechniczne
Opis:
In the northeast of Algeria, Souk Ahras area is known for the severity and spread of landslides, especially in Mechroha and Zaarouria municipalities. Stability analysis of landslides in these areas depends on the calculations of safety factor according to several parameters (physical, mechanical, geological…). The aim of this study is to investigate the parameters affecting the safety factor using the design of experiments (DOE) method, central composite design (CCD) and response surfaces methodology (RSM). These methods use parameter modeling and optimization to discuss a solution of landslide hazard by developing models of safety factor (Fs) considered as response. The other parameters adopted as input independent factors are geotechnical physical and mechanical parameters such as: the dry and wet unit weight (γd, γh), the water content (w), the plasticity and liquidity limits and the plasticity index (WL, WP, IP), the percentage of fine elements Ff (%) < 0.08 mm), the cohesion C and the internal friction angle (Phi). Obtained results show high correlations with a regression coefficient R2 of 0.88 and 0.93 in the two cases study and the predicted factor of safety model fit best to those obtained in the analytical and numerical modeling procedure. The final model is applicable to give reliable results on the safety factor of landslides.
Źródło:
Geomatics, Landmanagement and Landscape; 2022, 4; 137--150
2300-1496
Pojawia się w:
Geomatics, Landmanagement and Landscape
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Metafory zwierzęce w Błogosławieństwie Jakuba (Rdz 49, 1-28)
Animal Metaphors in the Blessing of Jacob (Gen 49:1-28)
Autorzy:
Wajda, Anna Maria
Powiązania:
https://bibliotekanauki.pl/articles/2034916.pdf
Data publikacji:
2019-04-16
Wydawca:
Uniwersytet Kardynała Stefana Wyszyńskiego w Warszawie
Tematy:
błogosławieństwo Jakuba
metafory zwierzęce
lew
osioł
wąż
łania
wilk
Jacob’s blessing
animal metaphor
lion
ass
snake
doe
wolf
Opis:
The relatively numerous references to animals in the blessing of Jacob(Gen 49: 1-28) show that the biblical author had a broad knowledge of nature.According to the current classification of living organisms and method ofresearch used by modern zoology, it is stated that these observations donot have the characteristics of scientific research. In spite of this, they arethe evidence of the clear-sighted observation of animals, which is reflectednot only in the knowledge of the appearance of individual species, but alsoof specific behaviours related to their way of life. It concerns not only domesticanimals, like the ass (cf. Gen 49: 14), but also wild representativesof the fauna. References concerning the latter apply to the species perceivedas highly dangerous to man and domestic animals, that is the lion(cf. Gen 49: 9), snake (cf. Gen 49: 17) or wolf (cf. Gen 49: 27). Amongstthe animals mentioned in the blessing of Jacob one can also distinguishthose which aroused admiration because of their appearance, such as thedoe (cf. Gen 49: 21). At the same time, it is essential to emphasise the factthat the wealth of animal metaphors is just a tool used to translate “God’saddress” into human language.
Źródło:
Collectanea Theologica; 2018, 88, 4; 53-73
0137-6985
2720-1481
Pojawia się w:
Collectanea Theologica
Dostawca treści:
Biblioteka Nauki
Artykuł

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