Proceedings of the Second International Conference on Intelligent Processing and Manufacturing of Materials. IPMM'99 (Cat. No.99EX296)最新文献_第4页

On the oxidation of steel in CO/sub 2/ and air 钢在CO/sub /和空气中的氧化

Proceedings of the Second International Conference on Intelligent Processing and Manufacturing of Materials. IPMM'99 (Cat. No.99EX296) Pub Date : 1999-07-10 DOI: 10.1109/IPMM.1999.792515

G. Hosseinali, A. Akhtar

引用次数: 0

A new fuzzy-fractal approach for surface quality control in intelligent manufacturing of materials 一种新的材料智能制造表面质量控制模糊分形方法

Proceedings of the Second International Conference on Intelligent Processing and Manufacturing of Materials. IPMM'99 (Cat. No.99EX296) Pub Date : 1999-07-10 DOI: 10.1109/IPMM.1999.791497

P. Melin, O. Castillo

引用次数: 2

The characterization of flotation by colour information and selecting the proper equipment 通过颜色信息和选择合适的设备对浮选进行表征

Proceedings of the Second International Conference on Intelligent Processing and Manufacturing of Materials. IPMM'99 (Cat. No.99EX296) Pub Date : 1999-07-10 DOI: 10.1109/IPMM.1999.792526

A. Siren

{"title":"The characterization of flotation by colour information and selecting the proper equipment","authors":"A. Siren","doi":"10.1109/IPMM.1999.792526","DOIUrl":"https://doi.org/10.1109/IPMM.1999.792526","url":null,"abstract":"Summary form only given. Flotation is the most common industrial method by which valuable minerals are separated from waste rock, after crushing and grinding the ore. For process control, flotation plants and devices are equipped with conventional and specialized sensors. However certain variables are left to the visual observation of the operator, such as the colour of the froth and the size of the bubbles in the froth. The ChaCo-project (European Union-project 24931) started in November 1997. A measuring station was built at Pyhasalmi flotation plant. The system includes RGB-camera and spectral colour measurement instrument for flotation colour inspection. Visible spectral range measurements were also made for comparing the comments of operators for colour of the froth related to sphalerite concentration and process balance. Different dried mineral (sphalerite) ratios were also studied with iron pyrite to find out the minerals typical spectral features. Sphalerite spectral reflectance over different wavelengths, correlated to the sphalerate concentrations, is used for selecting a proper camera system with filters or for comparing the results with colour information from RGB-camera. Different candidate machine vision techniques are discussed for this application and the pre-processed information of dried mineral colours is used and adapted to the on-line measuring station. Moving bubbles of the froth produce total reflections disturbing the colour information. Polarization filters are used and results are reported. Reflectance outside visible light is also studied and reported.","PeriodicalId":194215,"journal":{"name":"Proceedings of the Second International Conference on Intelligent Processing and Manufacturing of Materials. IPMM'99 (Cat. No.99EX296)","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116941790","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Soft sensors for processing plants 加工厂用软传感器

Proceedings of the Second International Conference on Intelligent Processing and Manufacturing of Materials. IPMM'99 (Cat. No.99EX296) Pub Date : 1999-07-10 DOI: 10.1109/IPMM.1999.792454

Guillermo González

{"title":"Soft sensors for processing plants","authors":"Guillermo González","doi":"10.1109/IPMM.1999.792454","DOIUrl":"https://doi.org/10.1109/IPMM.1999.792454","url":null,"abstract":"Soft-sensors assist in solving the problem created by the unavailability of a sensor by providing a software backup for it, thus allowing a reduction of losses in plant performance. Similarly, the use of a soft sensor to estimate a plant variable for which no sensor is installed can improve plant performance. The core of a soft-sensor is a partial plant model allowing the generation of a estimated measurement to replace missing measurements. Coupled with the model is a problem of signal estimation, interpolation and prediction. Modes considered here are black box models and gray models which include phenomenological knowledge. Also, comparisons are made concerning the requirements for soft-sensor models and for models used in model based control. An approach to an integrated view of the various soft-sensor modeling methods is attempted. Other aspects considered include use for interpolation and prediction of measurements having a sampling rate which is too low; performance of a control loop; performance of the soft-sensor indication in the period following the removal of the actual sensor, as plant characteristics change; complementary considerations for ensuring the availability of soft-sensors in industrial environments; and problems related to the use of soft-sensors in automatic control loops. A review made of a sample of the technical literature on applications as well as of research and development in this field, is commented in the text and summarized in a table.","PeriodicalId":194215,"journal":{"name":"Proceedings of the Second International Conference on Intelligent Processing and Manufacturing of Materials. IPMM'99 (Cat. No.99EX296)","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126839150","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 54

Management of information in complex systems: perspectives for the new millennium 复杂系统中的信息管理:新千年的展望

Proceedings of the Second International Conference on Intelligent Processing and Manufacturing of Materials. IPMM'99 (Cat. No.99EX296) Pub Date : 1999-07-10 DOI: 10.1109/IPMM.1999.791491

E. Szczerbicki, Z. Gomolka

{"title":"Management of information in complex systems: perspectives for the new millennium","authors":"E. Szczerbicki, Z. Gomolka","doi":"10.1109/IPMM.1999.791491","DOIUrl":"https://doi.org/10.1109/IPMM.1999.791491","url":null,"abstract":"Engineering, operations research, and management science use scientific and engineering processes to design, plan, and schedule increasingly more complex industrial systems in order to enhance performance. One can argue that the systems have grown in complexity over the years mainly due to increased strive for resource optimization combined with a greater degree of uncertainty in the system's environment. Information is seen as one of the main resources that managers try to use in an optimal way. Managing complex systems requires a greater understanding and knowledge about the role of information in systems operation. Today, a growing complexity of information flow is a characteristic of enterprises which concerns products to be manufactured, services to be offered, processes and company structures. Complex systems also operate in changing environments surrounded by numerous uncertainties and disturbances. Difficulties arise from unexpected tasks and events and from a multitude of possible failures and other interactions during the attempt to control various activities in dynamic environments. Therefore, management of information is one of the most important aspects to be considered in intelligent management systems, which are expected to solve unforeseen problems, even on the basis of incomplete and imprecise information. The paper discusses the importance of information in operation management as well as new challenges in information modelling, visualisation and communication in the information society.","PeriodicalId":194215,"journal":{"name":"Proceedings of the Second International Conference on Intelligent Processing and Manufacturing of Materials. IPMM'99 (Cat. No.99EX296)","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126582231","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 5

Low-cost supersonic missile inlet fabrication technique 低成本超音速导弹进气道制造技术

Proceedings of the Second International Conference on Intelligent Processing and Manufacturing of Materials. IPMM'99 (Cat. No.99EX296) Pub Date : 1999-07-10 DOI: 10.1109/IPMM.1999.792502

C. Cornelius, D. Gibson

{"title":"Low-cost supersonic missile inlet fabrication technique","authors":"C. Cornelius, D. Gibson","doi":"10.1109/IPMM.1999.792502","DOIUrl":"https://doi.org/10.1109/IPMM.1999.792502","url":null,"abstract":"This paper presents a technique that allows for the fabrication of complex shapes to high accuracy without the expense of conventional machining. The savings associated with using this new approach over conventional fabrication methods directly resulted in an 85% reduction in fabrication costs. This technique was demonstrated in the fabrication of supersonic inlets for a ramjet engine missile. A single computer aided design (CAD) model was used for design and hardware integration, generation of the rapid prototyping computer file for producing a mandrel, finite element modeling of the inlet, development of the final machining tool paths and inspection of the mandrels and finished inlets. The development of this integrated single master model and stereolithography plating process is a major step forward in the area of missile component prototyping and frees the designer to approach component design and fabrication with a new, accurate and relatively inexpensive tool. The savings realized from the use of this technique are directly applicable to the manufacturing of other complex-shaped components both for military and commercial applications.","PeriodicalId":194215,"journal":{"name":"Proceedings of the Second International Conference on Intelligent Processing and Manufacturing of Materials. IPMM'99 (Cat. No.99EX296)","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131798747","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Control of liquid segregation of semi-solid aluminum alloys during intelligent compression test 半固态铝合金智能压缩试验中液相偏析的控制

Proceedings of the Second International Conference on Intelligent Processing and Manufacturing of Materials. IPMM'99 (Cat. No.99EX296) Pub Date : 1999-07-10 DOI: 10.1109/IPMM.1999.792549

C. Kang, K. Jung, H. Jung

{"title":"Control of liquid segregation of semi-solid aluminum alloys during intelligent compression test","authors":"C. Kang, K. Jung, H. Jung","doi":"10.1109/IPMM.1999.792549","DOIUrl":"https://doi.org/10.1109/IPMM.1999.792549","url":null,"abstract":"Thixoforming is becoming increasingly popular for manufacturing near-net shape parts and has so many advantages compared with conventional forming technologies that it has spread and been studied worldwide. Components produced by semi-solid forming process have good mechanical properties and less defects such as porosity. A relationship between stress and stain is very important to design a die to avoid defects of products during semi-solid forming process. Since the liquid will be of eutectic composition in alloys, liquid segregation will result in significant or undesirable situations. The materials used in this experiment are A357, A390, Al2024 alloys that have been fabricated by the electromagnetic stirring process. In the compression test with the semi-solid state materials the liquid phase coexists with globularized solid particles. Billet temperature corresponding to the desired solid fraction is controlled by an induction heating system. The intelligent compression test was performed by induction heating and MTS. During compression, specimen temperatures were continuously measured. The liquid segregation is controlled by changes in the strain rate and solid fraction during the compression process. The characteristics of flow between solid and liquid phase considering liquid segregation is examined. Generally, it is known that if the applied stress to semi-solid alloys is below the yield stress, the alloys show solid-like behavior but, if the applied stress exceeds the yield stress, the semi-solid alloys flow like liquid. Therefore, it is important to establish the yield point to predict the rheological behavior of semi-solid alloys.","PeriodicalId":194215,"journal":{"name":"Proceedings of the Second International Conference on Intelligent Processing and Manufacturing of Materials. IPMM'99 (Cat. No.99EX296)","volume":"150 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114521322","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 7

Artificial psychology: an attainable scientific research on the human brain 人工心理学:对人类大脑的一种可实现的科学研究

Proceedings of the Second International Conference on Intelligent Processing and Manufacturing of Materials. IPMM'99 (Cat. No.99EX296) Pub Date : 1999-07-10 DOI: 10.1109/IPMM.1999.791528

Zhiliang Wang, Lun Xie

引用次数: 19

Modeling of gold heap leaching for criteria of sustainability targets 可持续性目标标准的金堆浸出模型

Proceedings of the Second International Conference on Intelligent Processing and Manufacturing of Materials. IPMM'99 (Cat. No.99EX296) Pub Date : 1999-07-10 DOI: 10.1109/IPMM.1999.792531

R. Villas-Bôas, L. D. A. de Andrade Lima

引用次数: 1

Improving the prediction accuracy of constitutive model with ANN models 利用人工神经网络模型提高本构模型的预测精度

Proceedings of the Second International Conference on Intelligent Processing and Manufacturing of Materials. IPMM'99 (Cat. No.99EX296) Pub Date : 1999-07-10 DOI: 10.1109/IPMM.1999.792511

L. Kong, P. Hodgson

引用次数: 6