Fabrication and Analysis of Micro-pillars by Abrasive Water Jet Machining
Publication date: 2014 Source:Procedia Materials Science, Volume 6 Author(s): Vijay Kumar Pal , S.K. Choudhury Now-a-days, fabrication of 3-D features employing Abrasive Water Jet (AWJ) milling by partially superimposing two consecutive passes is a major research interest. This paper presents an innovative water jet path strategy to fabricate micro-pillars with good geometrical accuracy. These micro-pillars can be used as fins (cooling purpose) and tool fabrication for Electro Discharge Machining and Electro Chemical Machining (EDM/ECM). The novelty of the paper relies on the proposal of path strategy for jet movemen...
Source: Procedia Materials Science - October 12, 2014 Category: Materials Science Source Type: research
EPFM Analysis of Subsurface Crack Beneath a Wheel Flat Using Dynamic Condition
In this study wheel material is taken Elastic-plastic and J-Integral factor has been obtained. The wheel–rail vehicle is modelled as a mass–spring–damper system (Source: Procedia Materials Science)
Source: Procedia Materials Science - October 12, 2014 Category: Materials Science Source Type: research
Effect of Severe Plastic Deformation and Heat Treatment on Toughness of Magnesium Alloys
Publication date: 2014 Source:Procedia Materials Science, Volume 6 Author(s): M. Govindaraju , K. Balasubramanian , Uday Chackingal , K. Prasad Rao Severe plastic deformation by friction stir processing and subsequent heat treatment was carried out on cast magnesium alloys AZ91D and AE42 to obtain ultrafine precipitates size and enhance the toughness. The resultant toughness values were analyzed and correlated with microstructure. Toughness of magnesium alloys AE42 and AZ91D was doubled by friction stir processing followed by heat treatment. Ultrafine precipitates in the order of 0.1 to 0.5 micron were formed by th...
Source: Procedia Materials Science - October 12, 2014 Category: Materials Science Source Type: research
Effect of Two Different Energy Inputs for Laser Cladding of Stellite 6 on P91 and P22 Steel Substrates
Publication date: 2014 Source:Procedia Materials Science, Volume 6 Author(s): Alain Kusmoko , Druce Dunne , Huijun Li , David Nolan Stellite 6 was deposited by laser cladding of two different chromium-bearing steel substrates (P91 and P22). The chemical compositions, microstructures and surface roughnesses of these coatings were characterized by atomic absorption spectroscopy, optical microscopy, scanning electron microscopy and atomic force microscopy. The microhardness of the coatings was measured and the wear mechanism of the coatings was examined using a pin-on-plate (reciprocating) wear testing machine. The re...
Source: Procedia Materials Science - October 12, 2014 Category: Materials Science Source Type: research
Analysis of Mechanical Properties of Carbon Nanotube Reinforced Polymer Composites Using Continuum Mechanics Approach
Publication date: 2014 Source:Procedia Materials Science, Volume 6 Author(s): A.K. Gupta , S.P. Harsha Carbon Nanotubes (CNT) due to their excellent mechanical, thermal and electrical properties to the best carbon fibres, have attracted composite fraternity to explore the possibility of using them as an additional reinforcement in carbon fibre reinforced polymer composites. In this paper, the effect on elastic modulus due to CNT reinforcement on exiting two phase polymer composite is studied using both finite element analysis and rule of mixture theory. The carbon nanotubes are modelled as continuum hollow cylindrica...
Source: Procedia Materials Science - October 12, 2014 Category: Materials Science Source Type: research
CFBP Network–A Technique for Crack Detection
Publication date: 2014 Source:Procedia Materials Science, Volume 6 Author(s): D.N. Thatoi , Sasanka Choudhury , H.C. Das , P.K. Jena , Giridharilal Agrawal This paper describes the Cascade Forward Back Propagation (CFBP) network for crack detection in Euler Bernoulli beam like structure through the knowledge of changes in the natural frequencies and their measurements. A comparative study has been made between theoretical, experimental as well as the CFBP network analysis. In the theoretical analysis Finite element method has been used for the calculation of natural frequencies with the help of various shape funct...
Source: Procedia Materials Science - October 12, 2014 Category: Materials Science Source Type: research
Comparative Study of Bond Strength of Formaldehyde and Soya based Adhesive in Wood Fibre Plywood
This study proposes a natural biobased adhesive that was developed using soya flour, phenol, Plaster of Paris and an agro-based powder as the binder. A comparison of modulus of rupture of the plywood developed using the proposed soya-based adhesive with popular plywoods, including the traditional urea-formaldehyde based plywood has also been undertaken. The three-point bend test (to identify the modulus of rupture) was conducted for all the plywoods compressed at a fixed pressure. It was observed that the soya-based adhesive imparts greater strength to the plywood than the formaldehyde-based adhesive. It is also desirable ...
Source: Procedia Materials Science - October 12, 2014 Category: Materials Science Source Type: research
