35 research outputs found
Additional Tennessee Eastman Process Simulation Data for Anomaly Detection Evaluation
No full textUser Agreement, Public Domain Dedication, and Disclaimer of Liability.
By accessing or downloading the data or work provided here, you, the User, agree that you have read this agreement in full and agree to its terms.
The person who owns, created, or contributed a work to the data or work provided here dedicated the work to the public domain and has waived his or her rights to the work worldwide under copyright law. You can copy, modify, distribute, and perform the work, for any lawful purpose, without asking permission.
In no way are the patent or trademark rights of any person affected by this agreement, nor are the rights that any other person may have in the work or in how the work is used, such as publicity or privacy rights.
Pacific Science & Engineering Group, Inc., its agents and assigns, make no warranties about the work and disclaim all liability for all uses of the work, to the fullest extent permitted by law.
When you use or cite the work, you shall not imply endorsement by Pacific Science & Engineering Group, Inc., its agents or assigns, or by another author or affirmer of the work.
This Agreement may be amended, and the use of the data or work shall be governed by the terms of the Agreement at the time that you access or download the data or work from this Website.
Description
This dataverse contains the data referenced in Rieth et al. (2017). Issues and Advances in Anomaly Detection Evaluation for Joint Human-Automated Systems. To be presented at Applied Human Factors and Ergonomics 2017.
Each .RData file is an external representation of an R dataframe that can be read into an R environment with the 'load' function. The variables loaded are named ‘fault_free_training’, ‘fault_free_testing’, ‘faulty_testing’, and ‘faulty_training’, corresponding to the RData files.
Each dataframe contains 55 columns:
Column 1 ('faultNumber') ranges from 1 to 20 in the “Faulty” datasets and represents the fault type in the TEP. The “FaultFree” datasets only contain fault 0 (i.e. normal operating conditions).
Column 2 ('simulationRun') ranges from 1 to 500 and represents a different random number generator state from which a full TEP dataset was generated (Note: the actual seeds used to generate training and testing datasets were non-overlapping).
Column 3 ('sample') ranges either from 1 to 500 (“Training” datasets) or 1 to 960 (“Testing” datasets). The TEP variables (columns 4 to 55) were sampled every 3 minutes for a total duration of 25 hours and 48 hours respectively. Note that the faults were introduced 1 and 8 hours into the Faulty Training and Faulty Testing datasets, respectively.
Columns 4 to 55 contain the process variables; the column names retain the original variable names.
Acknowledgments. This work was sponsored by the Office of Naval Research, Human & Bioengineered Systems (ONR 341), program officer Dr. Jeffrey G. Morrison under contract N00014-15-C-5003. The views expressed are those of the authors and do not reflect the official policy or position of the Office of Naval Research, Department of Defense, or US Government
Additional Tennessee Eastman Process Simulation Data for Anomaly Detection Evaluation
No full textUser Agreement, Public Domain Dedication, and Disclaimer of Liability.
By accessing or downloading the data or work provided here, you, the User, agree that you have read this agreement in full and agree to its terms.
The person who owns, created, or contributed a work to the data or work provided here dedicated the work to the public domain and has waived his or her rights to the work worldwide under copyright law. You can copy, modify, distribute, and perform the work, for any lawful purpose, without asking permission.
In no way are the patent or trademark rights of any person affected by this agreement, nor are the rights that any other person may have in the work or in how the work is used, such as publicity or privacy rights.
Pacific Science & Engineering Group, Inc., its agents and assigns, make no warranties about the work and disclaim all liability for all uses of the work, to the fullest extent permitted by law.
When you use or cite the work, you shall not imply endorsement by Pacific Science & Engineering Group, Inc., its agents or assigns, or by another author or affirmer of the work.
This Agreement may be amended, and the use of the data or work shall be governed by the terms of the Agreement at the time that you access or download the data or work from this Website.
Description
This dataverse contains the data referenced in Rieth et al. (2017). Issues and Advances in Anomaly Detection Evaluation for Joint Human-Automated Systems. To be presented at Applied Human Factors and Ergonomics 2017.
Each .RData file is an external representation of an R dataframe that can be read into an R environment with the 'load' function. The variables loaded are named ‘fault_free_training’, ‘fault_free_testing’, ‘faulty_testing’, and ‘faulty_training’, corresponding to the RData files.
Each dataframe contains 55 columns:
Column 1 ('faultNumber') ranges from 1 to 20 in the “Faulty” datasets and represents the fault type in the TEP. The “FaultFree” datasets only contain fault 0 (i.e. normal operating conditions).
Column 2 ('simulationRun') ranges from 1 to 500 and represents a different random number generator state from which a full TEP dataset was generated (Note: the actual seeds used to generate training and testing datasets were non-overlapping).
Column 3 ('sample') ranges either from 1 to 500 (“Training” datasets) or 1 to 960 (“Testing” datasets). The TEP variables (columns 4 to 55) were sampled every 3 minutes for a total duration of 25 hours and 48 hours respectively. Note that the faults were introduced 1 and 8 hours into the Faulty Training and Faulty Testing datasets, respectively.
Columns 4 to 55 contain the process variables; the column names retain the original variable names.
Acknowledgments. This work was sponsored by the Office of Naval Research, Human & Bioengineered Systems (ONR 341), program officer Dr. Jeffrey G. Morrison under contract N00014-15-C-5003. The views expressed are those of the authors and do not reflect the official policy or position of the Office of Naval Research, Department of Defense, or US Government
Digital scriptum – novel approach of student experiment preparation
No full text[EN] In mechanical engineering, students pass several seminars aiming at selfconducted experiments and trials. In the ELLI project (Excellent Teaching and Learning in Engineering Science), different virtual and remote laboratories have been installed within the three engineering departments at the Ruhr-University Bochum. The preparation in a classic experiment is usually done with a classic paper print scriptum. This is not suitable for a virtual or remote laboratory, since, amongst others, no supervision is provided. Due to that, a classic scriptum has been transferred in a digital scriptum based on the Open Source software “Adapt Learning” and has been extended by various implemented digital items. This contribution is discussing preliminary student experiences and identified prospective improvements. It turns out that the digital scriptum is suitable for the preparation of virtual and remote laboratories but can be an excellent alternative to the classic printout scriptum in a student experiment in a hands on laboratory as well.http://ocs.editorial.upv.es/index.php/HEAD/HEAD18Roß, N.; Kuska, R.; Rieth, I.; Frerich, S. (2018). Digital scriptum – novel approach of student experiment preparation. Editorial Universitat Politècnica de València. 1263-1270. https://doi.org/10.4995/HEAD18.2018.8188OCS1263127
Einfluss der Genauigkeit der Reaktionskinetik auf die simulationsgestützte Auslegung von Blasensäulen
No full text
Simulationsgestützte Auslegung von Blasensäulen mithilfe eines Compartmentmodells
No full textDie Auslegung von Blasensäulen stellt aufgrund der komplexen Fluiddynamik und der Verknüpfung dieser mit den Phänomenen des Stoffübergangs und der Reaktion immer noch eine Herausforderung dar. Compartmentmodelle bieten das Potenzial die relevanten Strömungsformen, den Stoffübergang und die Reaktion mit einem geringeren Rechenaufwand im Vergleich zu den Strömungssimulationen abzubilden.
Es werden die Methoden zur Generierung der Compartments und der Ermittlung fluiddynamischer sowie reaktionskinetischer Parameter aufgezeigt, wobei letztere anhand von eigenen Versuchen näher diskutiert werden. Das im Zuge dieser Arbeit entwickelte Compartmentmodell wird auf eine industrielle Blasensäule angewendet und validiert. Um den Vorteil des radial auflösenden Compartmentmodells gegenüber den gewöhnlichen axialen Dispersionsmodellen zu bewerten, werden die Simulationsergebnisse beider Modelle hinsichtlich des Einflusses der radialen Auflösung und der Ungenauigkeiten der kinetischen Daten analysiert
Manufacturing, high heat flux testing and post mortem analyses of a W-PIM mock-up
No full textIn the framework of the European material development programme for fusion power plants beyond the international thermonuclear experimental reactor (ITER), tungsten (W) is an attractive candidate as plasma facing material for future fusion reactors. The selection of tungsten is owing to its physical properties such as the high melting point of 3420 °C, the high strength and thermal conductivity, the low thermal expansion and low erosion rate. Disadvantages are the low ductility and fracture toughness at room temperature, low oxidation resistance, and the manufacturing by mechanical machining such as milling and turning, because it is extremely cost and time intensive. Powder Injection Molding (PIM) as near-net-shape technology allows the mass production of complex parts, the direct joining of different materials and the development and manufacturing of composite and prototype materials presenting an interesting alternative process route to conventional manufacturing technologies. With its high precision, the PIM process offers the advantage of reduced costs compared to conventional machining. Isotropic materials, good thermal shock resistance, and high shape complexity are typical properties of PIM tungsten. This contribution describes the fabrication of tungsten monoblocks, in particular for applications in divertor components, via PIM. The assembly to a component (mock-up) was done by Hot Radial Pressing (HRP). Furthermore, this component was characterized by High Heat Flux (HHF) tests at GLADIS and at JUDITH 2, and achieved 1300 cycles @ 20 MW/m2. Post mortem analyses were performed quantifying and qualifying the occurring damage by metallographic and microscopical means. The crystallographic texture was analysed by EBSD measurements. No change in microstructure during testing was observed
Les « cahiers manuscrits » d’Etienne Sigaut : jonques et sampans chinois
No full textEtienne Sigaut, agent de la compagnie des Messageries Maritimes à Shanghaï a réalisé entre 1943 et 1947 des cahiers de croquis inédits. Ces cahiers, conservés au Musée national de la Marine, sont consacrés aux différents modèles de jonques de commerce et de pêche observées dans le port de Shanghaï. Auteur d’un article sur l’œuvre de l’Amiral Pâris, Sigaut s’inscrit dans la continuité de celui-ci. Fondés sur des enquêtes personnelles et accordant une part importante à l’expression graphique, les cahiers de croquis constituent une remarquable série de monographies complétant les recherches menées par Audemard, Donnelly et Worcester, avec qui Sigaut a entretenu des relations étroites. Cette documentation est présentée en soulignant les méthodes de travail de Sigaut et leur apport à la connaissance de l’architecture navale chinoiseThe object of this article is to present, as a preliminary approach, an unpublished work conserved by the National Maritime Museum of Paris. The notebooks of Etienne Sigaut (1887-1983) are an exceptional documentation of traditional chinese naval architecture. Before examining this documentation, we feel it to be important at first, to briefly situate the author of this work.Etienne Sigaut, agente de la compañía de las Messageries Maritimes en Shangai entre 1943 y 1947, realizó varios cuardenos de croquis inéditos. Los cuardenos conservados en el Museo de la Marina están consagrados a los diferentes modelos de juncos de comercio y de pesca observados en el puerto de Shangai. Autor de un artículo sobre la obra del almirante Pâris, Sigaut se inscribe en su continuidad. Fundados sobre encuestas personales y acordando la parte importante a la expresión gráfica, los cuadernos de croquis constituyen una notable serie de monografías que completan las investigaciones llevadas a cabo por Audemard Donnelly — y Worcester, con quien Sigaut ha mantenido estrechas relaciones. Esta documentación está presentada subrayando dos métodos de trabajo de Sigaut y su aporte al conocimiento de la arquitectura naval china
Irradiation hardening and ductility loss of Eurofer97 steel variants after neutron irradiation to ITER-TBM relevant conditions
No full textTen Eurofer97 steel variants, produced by non-standard fabrication-processing routes and modified alloying chemistries, were studied by neutron irradiations in the high flux isotope reactor. The irradiations were performed to ITER-TBM relevant conditions of ∼255–350 °C, 2.94–3.24 dpa. We quantified the irradiation-induced degradation of the steels using mechanical property tests. All the steels suffered from irradiation hardening, where a significant increase in Vickers microhardness and yield stress (σYS) occurred, accompanied with severe loss of tensile elongation. The extent of hardening was material dependent. For Tirr = 300±30 °C, most steels showed σYS increase in the range of ∼30% to as high as ∼66%, except for a low temperature tempered steel with σYS increase below 15%. Despite large losses in elongation, most failures were ductile. Significant post-necking ductility was retained with reduction in area (RA) between 65–75%, but <50% for low temperature tempered steels. The ultimate tensile stress to yield stress (σUTS/σYS) ratios decreased significantly after irradiation, highlighting irradiation-induced strain hardening capacity reduction. No major effect of irradiation on the plastic instability stress (σPIS) and true fracture stress of the steels was observed. By comparing the tensile stresses in true stress units and with literature, the results suggest that RAFM steel designing should target materials with a large separation between σPIS and σYS, to ensure the materials can maintain large work hardening and uniform deformation capability after irradiation. The tensile data of the steels additionally revealed a compelling evidence of an inverse trend between the change in RA and increase in σYS of the neutron irradiated Eurofer97 type steels
Towards a climate-neutral basic materials industry in North Rhine-Westphalia
No full textNorth Rhine-Westphalia (NRW) is the industrial center of Germany and one of the most important industrial locations in Europe. It is a key location for the energy-intensive basic materials industry like the production of steel and non-ferrous metals, (petro)chemicals, cement and lime, bricks, glass and ceramics, and paper. Around 20 % of NRW's total greenhouse emissions derive from industrial processes. By 2045, industry must achieve climate-neutrality, which requires a massive transformation effort. Technologically, this needs large-scale utilization of green hydrogen, carbon management, consequent circular economy, and climate-neutral production of process heat. Furthermore, various adjustments to the policy framework are essential
