Wszystkie pola: process condition - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: A Study on the Durability of Dimensionally Stable Electrode in High-Rate Electroplating Process Condition Using Accelerated Life Test
Autorzy:: Park, Sung Cheol
Jung, Yeon Jae
Koo, Seokbon
Lee, Kee-Ahn
Son, Seong Ho
Powiązania:: https://bibliotekanauki.pl/articles/2049186.pdf
Data publikacji:: 2021
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: durability
prediction
dimensionally stable electrode
accelerated life test
failure mechanism
Opis:: In order to the long-term stability of DSE for electroplating process, the lifetime equations were calculated from the results of the accelerated life testing, and the lifetime of DSE was predicted. The nano-embossing pre-treatment led to 2.65 times in the lifetime of DSE. The degradation mechanism of DSE with a thick metal oxide layer for applied highly current density process condition was identified. The improvement of durability of DSE seems to be closely related to adhesion between titanium plate and mixed metal oxide layer.
Źródło:: Archives of Metallurgy and Materials; 2021, 66, 3; 675-678
1733-3490
Pojawia się w:: Archives of Metallurgy and Materials
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Relation of process and condition monitoring at deep hole drilling
Autorzy:: Heisel, U.
Sabou, F.
Maier, D.
Powiązania:: https://bibliotekanauki.pl/articles/100005.pdf
Data publikacji:: 2012
Wydawca:: Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych
Tematy:: process
condition monitoring
deep hole drilling
main spindle
Opis:: Process monitoring and condition monitoring are closely related. The basic structure of the tasks is the same. In some cases the may even use the same set of raw data. Monitoring of a process is also influenced by the machine's state. Therefore, the state has to be monitored also. In most cases wear causes a divergence of the intended from the actual state. The paper presents the principles of monitoring the condition of a main spindle as well as monitoring the process of deep hole drilling.
Źródło:: Journal of Machine Engineering; 2012, 12, 1; 99-110
1895-7595
2391-8071
Pojawia się w:: Journal of Machine Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Influence of process conditions and fillers addition on extrusion-cooking efficiency and SME of thermoplastic potato starch
Wplyw parametrow procesu i dodatku wypelniaczy na wydajnosc i energochlonnosc ekstruzji termoplastycznej skrobi ziemniaczanej
Autorzy:: Oniszczuk, T.
Wojtowicz, A.
Mitrus, M.
Moscicki, L.
Combrzynski, M.
Rejak, A.
Gladyszewska, B.
Powiązania:: https://bibliotekanauki.pl/articles/793031.pdf
Data publikacji:: 2012
Wydawca:: Komisja Motoryzacji i Energetyki Rolnictwa
Tematy:: thermoplastic starch
potato starch
filler
extrusion-cooking
screw speed
energy consumption
flax fibre
cellulose
process condition
Źródło:: Teka Komisji Motoryzacji i Energetyki Rolnictwa; 2012, 12, 1
1641-7739
Pojawia się w:: Teka Komisji Motoryzacji i Energetyki Rolnictwa
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Influence of process conditions on selected texture properties of precooked buckwheat pasta
Wplyw parametrow procesu na wybrane cechy tekstury podgotowanych makaronow gryczanych
Autorzy:: Wojtowicz, A.
Powiązania:: https://bibliotekanauki.pl/articles/791835.pdf
Data publikacji:: 2012
Wydawca:: Komisja Motoryzacji i Energetyki Rolnictwa
Tematy:: extrusion-cooking
buckwheat
pasta
precooked pasta
moisture content
gluten-free pasta
texture property
buckwheat flour
thermal treatment
mechanical treatment
process condition
Źródło:: Teka Komisji Motoryzacji i Energetyki Rolnictwa; 2012, 12, 1
1641-7739
Pojawia się w:: Teka Komisji Motoryzacji i Energetyki Rolnictwa
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Effect of process parameters on the condition of the wire electrode in WEDM of Ti6Al4V
Autorzy:: Zaborski, S.
Poroś, D.
Powiązania:: https://bibliotekanauki.pl/articles/1429400.pdf
Data publikacji:: 2008
Wydawca:: Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych
Tematy:: titanium alloys
wire electrode
artificial neural networks
WEDM
Opis:: Conventional machining of titanium alloy Ti6Al4V cause high temperature and rapid wear of tool which makes him hardly suitable for machining by machine cutting. The presented experimental study was carried out on a modern wire EDM Sodick AQ327L. Three types of the wire were used. Investigated were the effects of such input parameters as the pulse width and the time between two pulses on the output parameters such as area cutting efficiency, workpiece surface roughness and wear rate of the electrode. The resulting relationships were determined using the conventional regression analysis and neural networks. The results were checked for goodness of fit.
Źródło:: Journal of Machine Engineering; 2008, 8, 2; 52-64
1895-7595
2391-8071
Pojawia się w:: Journal of Machine Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: Selection of signal registration points in the monitoring process and diagnosing the condition of the rail vehicle
Dobór punktów rejestracji sygnałów w procesie monitoringu stanu pojazdu szynowego
Autorzy:: Chudzikiewicz, Andrzej
Stelmach, Anna
Wawrzyński, Wojciech
Powiązania:: https://bibliotekanauki.pl/articles/106699.pdf
Data publikacji:: 2019
Wydawca:: Uniwersytet Technologiczno-Humanistyczny im. Kazimierza Pułaskiego w Radomiu
Tematy:: rail vehicle
measuring points
condition monitoring
pojazd szynowy
punkty pomiarowe
monitoring stanu
Opis:: The article discusses the process of selecting points on a rail vehicle in which sensors recording signals will be located, with a view to their later use in the process of monitoring the condition of the vehicle and in particular elements of the first and second degree suspension system. The number of such points and their location is significant considering the complexity of the monitoring system and thus the costs of its construction and subsequent operation, as well as the possibility of using registered signals in the process of diagnosing the technical condition of the vehicle, bearing in mind the functioning of such a system in online mode.
W artykule omówiony został proces wyboru punktów na pojeździe szynowym, w których ulokowane będą czujniki rejestrujące sygnały, mając na uwadze późniejsze ich wykorzystanie w procesie monitorowanie stanu pojazdu a w szczególności elementów układu podatnego I i II stopnia usprężynowania. Liczba takich punktów oraz ich rozmieszczenie ma istotne znaczenie biorąc pod uwagę złożoność systemu monitorowania a tym samym koszty jego budowy i późniejszej eksploatacji a także możliwość wykorzystania zarejestrowanych sygnałów w procesie diagnozowania stanu technicznego pojazdu mając na uwadze funkcjonowanie takiego systemu w trybie on-line.
Źródło:: Journal of Civil Engineering and Transport; 2019, 1, 1; 7-13
2658-1698
2658-2120
Pojawia się w:: Journal of Civil Engineering and Transport
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 7.

Tytuł:: Intelligent cyber-physical monitoring and control of I4.0 machining systems – an overview and future perspectives
Autorzy:: Hassan, Mahmoud
Sadek, Ahmad
Attia, M. Helmi
Powiązania:: https://bibliotekanauki.pl/articles/2052195.pdf
Data publikacji:: 2022
Wydawca:: Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych
Tematy:: machining process
artificial intelligence
modelling
optimisation
tool condition monitoring
Opis:: Rapid evolution in sensing, data analysis, and industrial internet of things technologies had enabled the manufacturing of advanced smart tooling. This has been fused with effective digital inter-connectivity and integrated process control intelligence to form the industry I4.0 platform. This keynote paper presents the recent advances in smart tooling and intelligent control techniques for machining processes. Self-powered wireless sensing nodes have been utilized for non-intrusive measurement of process-born phenomena near the cutting zone, as well as tool wear and tool failure, to increase confidence in the process and tool condition monitoring accuracy. Cyber-physical adaptive control approaches have been developed to optimize the cycle time and cost while eliminating machined part defects. Novel artificial intelligence AI-based signal processing and modeling approaches were developed to guarantee the generalization and practicality of these systems. The paper concludes with the outlook for future work needed for seamless implementation of these developments in industry.
Źródło:: Journal of Machine Engineering; 2022, 22, 1; 5-24
1895-7595
2391-8071
Pojawia się w:: Journal of Machine Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 8.

Tytuł:: On the mathematical condition-based maintenance modelling for continuously deteriorating systems
Autorzy:: Bérenguer, C.
Powiązania:: https://bibliotekanauki.pl/articles/2069561.pdf
Data publikacji:: 2008
Wydawca:: Uniwersytet Morski w Gdyni. Polskie Towarzystwo Bezpieczeństwa i Niezawodności
Tematy:: condition-based maintenance
continuous deterioration
stochastic modelling
Gamma process
semi-regeneration
Opis:: This paper presents a modelling framework of condition-based maintenance policies for continuously deteriorating systems, based on semi-regenerative stochastic techniques.
Źródło:: Journal of Polish Safety and Reliability Association; 2008, 1; 41--52
2084-5316
Pojawia się w:: Journal of Polish Safety and Reliability Association
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 9.

Tytuł:: Method of building a model of operational changes for the marine combustion engine describing the impact of the damages of this engine on the characteristics of its operation process
Autorzy:: Landowski, B.
Pająk, M.
Żółtowski, B.
Muślewski, Ł.
Powiązania:: https://bibliotekanauki.pl/articles/258818.pdf
Data publikacji:: 2017
Wydawca:: Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:: process of operation
stochastic process
compression ignition engine
condition of object
operating condition
Opis:: This article deals with the modeling of the processes of operating both marine main and auxiliary engines. The paper presents a model of changes in operating conditions of ship’s internal combustion engine. The semi-Markov decision process was used to mathematically describe the process model of the engine. The developed model describes the effect of engine damage on the characteristics of its operation. A change in the input parameters of the model can simulate the influence of internal and external factors on the course of the analyzed process. A simplified calculation example is also presented for illustration purposes. The presented method together with developed algorithms and IT tools can be used to solve a wide range of problems related to the operation of marine main engines and other marine equipment as well as maritime and port facilities. This concerns primarily the economic, risk management and operational security issues of complex technical systems, as well as the readiness and reliability analysis of technical facilities.
Źródło:: Polish Maritime Research; 2017, 4; 67-76
1233-2585
Pojawia się w:: Polish Maritime Research
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 10.

Tytuł:: Mathematical model of identification and automation the process of shaft machining in elastic-deformable condition
Autorzy:: Taranenko, V.
Świć, A.
Powiązania:: https://bibliotekanauki.pl/articles/117860.pdf
Data publikacji:: 2012
Wydawca:: Polskie Towarzystwo Promocji Wiedzy
Tematy:: model
dynamic system
shaft
elastic deformable condition
operational transmittance
regulator
Opis:: The specification of the low rigidity parts machining process is consider by introducing suitable equations of constrains, which describe additional elastic deformations in one of equations describing the force controlling influence. This paper introduces general and detailed mathematical models of the DS of turning the longitudinal, low rigidity shafts. Research results and examples of their approximation were introduced. Some method of synthesis and examples structure of regulator P were shown for one detailed model of DS under received approximated operational transmittance of DS. The way of controlling the accuracy of shafts turning in the elastic deformable condition and controlling system was described.
Źródło:: Applied Computer Science; 2012, 8, 2; 59-72
1895-3735
Pojawia się w:: Applied Computer Science
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 11.

Tytuł:: Real-time tool condition monitoring in milling by means of control charts for auto-correlated data
Autorzy:: Colosimo, B. M.
Moroni, G.
Grasso, M.
Powiązania:: https://bibliotekanauki.pl/articles/100212.pdf
Data publikacji:: 2010
Wydawca:: Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych
Tematy:: statistical process control
profile monitoring
tool condition monitoring
Opis:: Real time monitoring of tool condirions and machining processes has been extensively studies in tne last decades, but a wide gap is stiil present between research activities and commercial tools. One of the factors which currently limit the utilization of these systems is the low flexibility of off-the-shelf solutions: in most cases they need dedicated off-line training sessions to acquire the reference patterns and thresholds, and/or the need for several input data to be defined a priori by a human operator. Instead of exploiting off-line learning sessions and a prior defined thresholds, this paper proposes an approach for automatic modelling of a cutting process and real-time monitoring of its stability that is based only on data acquired on-line during the process itself. This approach avoids any a-priori assumption about expected signal patterns, and it is characterized by an innovative implementation of well known Statistical Process Control techniques. In particular, with regard to milling processes, the paper proposes the utilization of cross-correlation coefficient between repeating signal profiles as the feature to be monitored, and an EWMA (Exponentially Weighted Moving Average) control chart for auto-correlated data as monitoring tool.
Źródło:: Journal of Machine Engineering; 2010, 10, 2; 5-17
1895-7595
2391-8071
Pojawia się w:: Journal of Machine Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 12.

Tytuł:: The influence of changing of treatment condition on surface roughness parameter during turning process by wiper insert
Autorzy:: Labuda, Wojciech
Powiązania:: https://bibliotekanauki.pl/articles/243562.pdf
Data publikacji:: 2019
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: finish turning process
surface roughness parameter
cutting parameters
stainless steel
Opis:: One of the greatest problems of modern production techniques is the achievement of an appropriate quality at minimal costs and accompanied by the production efficiency increase. Therefore, while designing the production process. The technology used should have a considerable influence on the durability and reliability of machine parts to be produced. During finish treatment, the final dimensions as well as functional properties are imparted to a given element by application of proper treatment type. The engineer has a range of production techniques to choose for the proper surface layer formation. It is crucial to find a suitable solution which will meet the requirements as well as the work conditions of a given machine part. The article presents the results of influence of change of cutting parameters on surface roughness parameter during turning process of stainless steel. A shaft made of 304L stainless steel was used for the research. The chemical composition of steel was measured by Solaris-ccd plus optical spectrometer. The cutting process was carried out on a universal CDS 6250 BX-1000 centre lathes. Measurement of surface roughness was carried out by T8000 profilometer. The turning process was conducted by a cutting tool with Wiper insert. During the turning, the following machining parameters were used: cutting speed Vc [m/min], feed f [mm/rev], cutting depth ap [mm] and additionally changed nose radius r [mm], and tool cutting edge angle ϰr [º]. The results of measurements of Ra parameter underwent statistic analysis. The calculations were conducted by Statistica software.
Źródło:: Journal of KONES; 2019, 26, 1; 81-88
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 13.

Tytuł:: Monitoring of cutting conditions with the empirical mode decomposition
Autorzy:: Wolszczak, P.
Łygas, K.
Litak, G.
Powiązania:: https://bibliotekanauki.pl/articles/102856.pdf
Data publikacji:: 2017
Wydawca:: Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:: monitoring
cutting condition
milling process
Opis:: In this paper, we apply empirical mode decomposition by Huang and Hilbert to transform signals recorded during a milling process. Vibroacoustic sensors recorded vibrations of a tool-workpiece system while milling with the end mill of a special shape of “Hi-Feed”. The results of Huang-Hilbert analysis provide the information about amplitudes and frequencies of empirical modal components. Application of Huang-Hilbert transform to cutting conditions monitoring allows the separation of various vibration components caused by phenomena associated with the drive system and the machine components. Therefore, the analysis highlights vibrations caused by known sources of vibration, such as spindle speed, the number of teeth of the cutting tool or the frequency of vibration tools. Furthermore, signal components generated in the cutting zone were identified. The resulting information helps to assess the working conditions of cutting tools, selection of cutting parameters and tool wear monitoring.
Źródło:: Advances in Science and Technology. Research Journal; 2017, 11, 1; 96-103
2299-8624
Pojawia się w:: Advances in Science and Technology. Research Journal
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 14.

Tytuł:: Multichannel measuring system for profile monitoring of CO2 concentration in cultivation equipment
Autorzy:: Mitsulov, N.
Tsonev, T.
Powiązania:: https://bibliotekanauki.pl/articles/24968.pdf
Data publikacji:: 2002
Wydawca:: Polska Akademia Nauk. Instytut Agrofizyki PAN
Tematy:: cultivation equipment
measurement system
plant physiology
photosynthetic process
carbon dioxide
ventilation
air
concentration
greenhouse
greenhouse condition
natural condition
Źródło:: International Agrophysics; 2002, 16, 3
0236-8722
Pojawia się w:: International Agrophysics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 15.

Tytuł:: In-process control with a sensory tool holder to avoid chatter
Autorzy:: Bleicher, F.
Schörghofer, P.
Habersohn, C.
Powiązania:: https://bibliotekanauki.pl/articles/100160.pdf
Data publikacji:: 2018
Wydawca:: Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych
Tematy:: adaptive control
condition monitoring
chatter
Opis:: Hydro-, steam- and gas- turbines, aircraft components or moulds are milled parts with complex geometries and high requirements for surface quality. The production of such industry components often necessitates the use of long and slender tools. However, instable machining situations together with work pieces with thin wall thickness can lead to dynamic instabilities in the milling processes. Resulting chatter vibrations cause chatter marks on the work piece surface and have influence on the tool lifetime. In order to detect and avoid the occurrence of process instabilities or process failures in an early stage, the Institute for Production Engineering and Laser Technology (IFT) developed an active control system to allow an in-process adaption of machining parameters. This system consists of a sensory tool holder with an integrated low cost acceleration sensor and wireless data transmission under real time conditions. A condition monitoring system using a signal-processing algorithm, which analyses the received acceleration values, is coupled to the NC- control system of the machine tool to apply new set points for feed rate and rotational speed depending on defined optimisation strategies. By the implementation of this system process instabilities can be avoided.
Źródło:: Journal of Machine Engineering; 2018, 18, 3; 16-27
1895-7595
2391-8071
Pojawia się w:: Journal of Machine Engineering
Dostawca treści:: Biblioteka Nauki

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