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Title: Development of technology for making porous gray cast iron castings with the implementation of box behnken design
Researcher: Shaik, Dawood A K
Guide(s): Mohamed Nazirudeen, S S
Keywords: Porous, Gray cast iron castings, box-behnken design, Radiography, carbon, flake graphite
Upload Date: 27-Sep-2013
University: Anna University
Abstract: Porous structures have become an attractive research field both from a scientific viewpoint and the prospect of industrial applications. They have very high porosity level and exceptionally light weight materials and provide tool for the realisation of optimal combination of properties. Porous structures are known for their interesting combinations of physical and mechanical properties such as high stiffness in conjunction with very low specific weight or high compression strength. This research work deals with the special interest in formation of porosity in the cast materials especially in gray cast iron. It contains carbon in the form of flake graphite in a matrix which consists of ferrite, pearlite or a mixture of the two. A technique has been developed for preparation of Porous gray cast iron metal foam using sand balls of various sizes. Inspection methods like Radiography found that there is no mass segregation of the metal at any place in the casting. Cut section analysis was done on the porous sample, it is a visual inspection method of castings which reveal the interconnectivity of the pores and the pore sizes. Porous structures also provide enhanced resistance to damage or sudden fracture, as the open structures can absorb large tensile and compressive strains. Compression test, it was identified that due to porosity, a minimum load of 325 KN was utilized to compress the porous piece whereas maximum load for non-porous model it was above 1400 KN. Metallographic examination gave an insight into the pore structure, which reveals information on pore distribution and the interconnections of the open cells. Scanning Electron Microscope gave the information regarding the fractured surface of porous gray cast iron. By using the Box-behnken design, matrix was formed and optimization was done which gave good results. Predicted values and obtained values were in good agreement with the experimental values. newline newline newline
Pagination: xvii, 141p.
Appears in Departments:Faculty of Mechanical Engineering

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02_certificate.pdf36.49 kBAdobe PDFView/Open
03_abstract.pdf15.3 kBAdobe PDFView/Open
04_acknowledgement.pdf14.87 kBAdobe PDFView/Open
05_contents.pdf47.08 kBAdobe PDFView/Open
06_chapter 1.pdf61.51 kBAdobe PDFView/Open
07_chapter 2.pdf975.12 kBAdobe PDFView/Open
08_chapter 3.pdf14.6 kBAdobe PDFView/Open
09_chapter 4.pdf571.58 kBAdobe PDFView/Open
10_chapter 5.pdf2.7 MBAdobe PDFView/Open
11_chapter 6.pdf23.54 kBAdobe PDFView/Open
12_references.pdf140.12 kBAdobe PDFView/Open
13_publications.pdf22.55 kBAdobe PDFView/Open
14_vitae.pdf14 kBAdobe PDFView/Open

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