Advanced Materials and Processes Research Institute
Advanced Materials and Processes Research Institute, BhopalNot a member yet
809 research outputs found
Sort by
High stress abrasive wear behaiour of sillimanite-Reinforced Al-alloy Matrix Composites: A factorial Design Approach.
No full textAn attempt has been made to explore the possibility of using a natural mineral, namely sillimanite, as dispersoid for synthesizing aluminum alloy composite by solidification technique. The abrasive wear behavior of this composite has been studied through factorial design of experiments. The wear behavior of the composite (Y composite) and the alloy (Y alloy) is expressed in terms of the coded values of different experimental parameters like applied load (x 1), abrasive size (x 2), and sliding distance (x 3) by the following linear regression equations: =20.94+15.22x1+5.94x2−1.95x3+4.82x1x2−1.45x1x3+1.29x2x3+1.60x1x2x3Ycomposite=21.05+15.69x1+9.5x2−2.51x3+7.41x1x2−2.33x1x3+0.52x2x3+0.10x1x2x3 These equations suggest that (i) the effect of the load is more severe on the wear rate of each of the materials and (ii) the wear rate of the materials increases with an increase in applied load and abrasive size, but decreases with increase in sliding distance (iii) interaction of these parameters are quite significant towards the wear of these materials (iv) above a critical load and abrasive size the composite suffers from higher wear rate than that of the matrix alloy. These facts have been explained on the basis of wear mechanisms
Microstructureal alterations through heat treatment and its influence on wear response of silicon containing Zinc-Based alloy under different test conditions.
Full text linkA century has elapsed since Alfred Wilm made the accidental discovery of age hardening \ud
in an aluminium alloy that became known as Duralumin. His work, and the gradual \ud
realization that hardening arose because of the presence of fine precipitates which \ud
provided barriers to the motion of dislocations, is a good example of the transition of \ud
metallurgy from an art to a science. A brief account is given of the development of age \ud
hardenable aluminium alloys and the way that modern experimental techniques allow \ud
precipitation processes to be understood on an atomic scale. Some contemporary issues \ud
in age hardening are then discussed
Fluoride aided potassium extraction from glauconitic sandstone for liquid fertilizer
No full textQuantitative extraction of potassium from glauconitic sandstone with dilute sulphuric acid, in the presence of fluoride ion has been rationalized on the basis of the synergistic effect exerted by both the cations and anions of the added fluoride salts. It has been shown that the reaction kinetics follow the well defined Crank-Ginstling Brounshtein diffusion equation throughout the process
The Difference is in the Detail: Its Potential as a Place Branding Tool and Impact upon Perceptions and Responses
No full textThis article resulted from research undertaken in our in respective fields over seven years. It sheds new light on how elements within built public environments can both 'affect' and 'effect' feelings, human behaviour and responses. My contribution developed from my ethnographic design studies.\ud
\ud
Previous studies of behaviour and activity in public space have focused on architectural or anthropological considerations, but this article fills a gap in research, by addressing the subject area from a user-focused design approach, offering new perspectives to existing and new audiences. It draws on ‘experience design’ models (e.g. those of IDEO, Tangerine) examining the dialogue of users’ and stakeholders’ experiences of objects/ environments; using models which have not been extensively applied to design of details in public space.\ud
\ud
Key to the visual studies undertaken was generation of online, categorised visual research archives, which then serve as design research resources for a variety of investigations
Effect of pH on Cr - Fe interaction
No full textIn the present investigation, the effect of pH on Cr-Fe interactions has been studied by carrying out Cr(VI) removal utilising metallic iron from the dichromate solutions of pH 2 to 7 by batch shaking process. Since the presence of ferrous iron in the solution is mainly responsible for Cr(VI) reduction, solubility of iron from the metallic iron was also measured. The maximum Cr(VI) removal efficiency was found at pH 2 but pH 3 was considered to be a suitable solution condition for Cr(VI) removal due to the occurrence of a minimum level of iron in the treated solution. Chemical analysis of Cr(VI)-reacted iron and treated dichromate solutions has indicated the reduction of Cr(VI) to Cr(III) at the metal surface itself at pH 2 and 3 and in the solution at pH 4 and above. A considerable decrease in chromium concentration on the iron surface in the pH range 4 - 7 as compared to pH 2 and 3 was also observed by EDXA analysis. These studies confirmed that after reduction, involvement of Cr(III) with Fe takes place at the metallic iron surface itself at pH 2 and 3 while it reduces with the rise of pH
