Wednesday, June 5, 2019

Cambridge Engineering Selector CES Computer Science Essay

Cambridge engineering science Selector CES Computer Science EssayIn this embark onicular assignment we are going to find the best poppycock for a part of land-based gas turbine. For this research we are going to use the Cambridge Engineering Selector (CFS) software. We are going to find the manufacturing process. We are going to make a report by the help of CES software on eco-audit for the existing material and the material we choose. We hurl some information and data abandoned by the telephoner on the existing material. The component shows below is the part of the land-based gas turbine.j230combFig. 1 The part of land-based gas turbineIt is made from Hastelloy X material which is a Nickel-Chromium-Iron-Molybdenum alloy. It has excellent energy and oxidation resistance. Its approximate chemical composition is Ni 47%, Cr 22%, Fe 18%, Mo 9%, and Co 1.5%. It has a true ductility thats why it can be forged and can be cold-worked. So this material is good for welding.The componen t has 0.75 m in diameter, 10 mm in thickness and 200 mm of depth. The component is on aid for 10 years and need to be replaced. The component need to be operates on some require condition i.e. temperatures up to 800oC, good thermal shock and corrosion resistance. It should be capable of being manufactured by casting. By apply the CES software we turn out to specify the manufacturing process. And if require we have to do coating to achieve the heat and corrosion resistance. We have some more data given which is Minimum Tensile Strength 300MPa, Has to operate above 550oC, Maximum thermal expansion 15 strain/o C, Minimum Yield Strength 300MPa.Cambridge Engineering Selector (CES)It is a software package which help purporter to make decision over which materials and design process to use in the development of newfangled equipment. We can use the CES software for general analysis and optimization applications by material reality data module. By the help of CES software we can desig n or redesign components with highest performance and lowest cost.CES software consists of three levels.Level 1 for Introductory-level students, providing introduction to the world of materials and processes and helping them to select the materials and processes with desexualiseed datasets of 67 materials and 75 processes.Level 2 for Intermediate-level students, providing the structured methodology for more materials and processes in the depth investigations with 98 materials and 107 processes with more information.Level 3 for Advanced/graduate students, providing the full materials and processes employ in industry with added design notes with the vast selection of materials. In this particular level there are 3000 materials and more than 200 processes.CES software consists of the following main(prenominal) windowpanes.CUsersRANJANDesktopFINAL ASSIGNMENTHigh Temperature Materials and Applicationsphoto of cesmain windows of ces.jpgFig. 2 CES main windowBrowse This window contains a itemization of the tables in the database and the classification tree for the selected table.Select This window is the central sailing point for selection projects, showing the selection settings, the project puts and the selection results.Search This window is used for text searches on records in the database.Graph Stage This window displays selection charts which show the relationships between attributes.Limit Stage This window is used to enter selection criteria as limits on individual attributes.Datasheet This window displays a list of attributes for individual records. There can be many of these on the screen at a time.As the requirement of the assignment, the company ask for the more streamlined and economical material for the land-based gas turbine part. The part should be fulfilling the required properties and condition. For the particular material for the part of the land-based gas turbine, level three is reliable containing more than 3300 materials.In level thr ee, by selection the select windows it ordain show the selection data. In selection data pane there is an option to select materials universe all bulk materials.CUsersRANJANDesktopFINAL ASSIGNMENTHigh Temperature Materials and Applicationsphoto of cesselestion atage all bulk materials.jpgFig. 3 selection data pane (All bulk Materials)The selection Results contains a list of all of the records that have passed the selection stages.CUsersRANJANDesktopFINAL ASSIGNMENTHigh Temperature Materials and Applicationsphoto of ces2945 materials.jpgFig. 4 All bulk MaterialsSelection stage of CES1. Selection with the TREE stageTo create a new tree stage selects new tree stage from the select identity card or the click the tree button. The tree stage properties will appear. For the project, the material for the part of land-based gas turbine should be metals and alloys, so insert it.CUsersRANJANDesktopFINAL ASSIGNMENTHigh Temperature Materials and Applicationsphoto of cesfirst tree for metals an d alloys.jpgFig. 5 Tree stage (Metals and Alloys)In the Tree Stage window, for a single relationship, click the Show button. This opens the cellphone Contents dialog, listing the names of records that fulfil the link selection criterion for the row. In the Cell Contents dialog, Click on a column headland to sort the list by record nameCUsersRANJANDesktopFINAL ASSIGNMENTHigh Temperature Materials and Applicationsphoto of ces1607 materials.jpgFig. 6 All Metals and AlloysBy applying the condition of metals and alloys in this tree stage, it will show further the metals and alloys from all universe materials.2. Selection by limit stageTo create a limit stage, select new limit stage from select menu or click the limit button in the selection stages pane of the select window. A limit stage window will appear, and the stage will be listed in the selection stages pane.CUsersRANJANDesktopFINAL ASSIGNMENTHigh Temperature Materials and Applicationsphoto of cesfirst limit.jpgFig. 7 Limit sele ction stageBefore we going to apply all the limits, lets check the requirements of the company. The company wants the part should be operate up to 800oC, so the upper limit service temperature should be 800oC and it also require that it should be operate above 550oC so the minimum service temperature should be 550oC.The tensile strength and yield strength should be minimum 300 MPa. The Maximum thermal expansion should be not more than 15 strain/ oC. However, the tensile strength and yield strength are mechanical properties and service temperature and thermal expansion are thermal properties of the material.Tensile strength maximum load that a material can support without fracture when being stretched, divided by the original cross-sectional area of the material.Yield strength The tenseness at the yield point. And the stress needed to produce a specified amount of plastic deformation.Thermal expansion Increase in volume of a material as its temperature is increased, unremarkably expressed as a fractional change in dimensions per unit temperature change. When the material is a solid, thermal expansion is usually described in terms of change in length, height, or thickness.CUsersRANJANDesktopFINAL ASSIGNMENTHigh Temperature Materials and Applicationsphoto of cesapply limit mechanical properties.jpgFig. 8 Applying Yield strength and Tensile strengthCUsersRANJANDesktopFINAL ASSIGNMENTHigh Temperature Materials and Applicationsphoto of cesthermal limits.jpgFig. 9 Applying service TemperatureBy applying the mechanical and thermal properties of material, it will show 171 materials which fulfil the conditions.CUsersRANJANDesktopFINAL ASSIGNMENTHigh Temperature Materials and Applicationsphoto of ces171 materials.jpgFig. 10 Metals and Alloys after applying mechanical and thermal propertiesManufacturing processIt is in-chief(postnominal) to make the right manufacturing decisions early in the design process, before the cost-penalty of making changes becomes too high. The selection of the most appropriate manufacturing process of which there are a very large number is one such decision. Taking a broad view, a process is a method for shaping or application or joining a material (Esawi, 1997). The kingdom of processes contains broad families casting, deformation, moulding, machining, compaction of powders, and such like. Each family contains many classes casting contains sand-casting, die-casting, and investment casting, for instance. These in turn have many members there are many variants of sand-casting, some specialized to give greater precision, others modified to allow exceptional size, and still others adapted to deal with particular materials. The land-based gas turbine should be capable of being manufactured by casting.By applying another tree stage for the manufacturing process in trees pane click on process universe and in shaping process, select the casting and insert it.CUsersRANJANDesktopFINAL ASSIGNMENTHigh Temperature Materials and Applicationsphoto of cestree manufacturing process.jpgFig. 11 Tree stage for manufacturing processAfter applying the casting limit to the materials selected, its eliminated all the materials which can be regulate by casting. There are only 67 materials left.CUsersRANJANDesktopFINAL ASSIGNMENTHigh Temperature Materials and Applicationsphoto of ces67 materials after casting.jpgFig. 12 Materials which can be shaped by castingAs the company requirement the material should be half or less footing than the original material. It is made of Hastelloy X material which is one the alloy of Ni-Cr alloy group.The Hastelloy X materials cost is 15.7- 17.3 GBP/kg.CUsersRANJANDesktopFINAL ASSIGNMENTHigh Temperature Materials and Applicationsphoto of ceshastelloy x.jpgFig. 13 Hastelloy X materials detailsBy applying the graph for the price for the selected materials. The existing material price is 15.7- 17.3 GBP/kg and the requirement is the half and less than the existing price. By the help of the selection box its easy to eliminate the expensive materials from the graph. Selecting the materials from less than 9 GBP/kg by the help of selection box.CUsersRANJANDesktopFINAL ASSIGNMENTHigh Temperature Materials and Applicationsphoto of cesprice graph.jpgFig. 14 The bar chart of selected material with priceAfter applying the condition of price, there are only 11 materials left.CUsersRANJANDesktopFINAL ASSIGNMENTHigh Temperature Materials and Applicationsphoto of ces11 materials.jpgFig. 15 Materials selected after the condition of priceEsawi, A. M. K. and Ashby M. F., Computer-Based Selection of Manufacturing Processes, Cambridge University Engineering Dept Report, CUED/C-EDC/TR50, May 1997.

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