Iterative Intensity Integration Technique (IIIT) is an intensity based correlation technique used to obtain the slope and curvature of loaded reflecting plates. Energy conservation principle forms the basis for this technique. The total quantity of light reflected by specimen before and after loading is assumed to be identical. It is best suited for contouring reflective plates that produce constant image size in load and unload state. But the corner and simply supported plates having the free edges to rotate while loading make reflected image enlarge/shrinks. Hence, preprocessing one of the images is mandatory to make it equal to size of other. In this present study, reflecting plates of corner supported rhombus and rectangular plate with holes are chosen and the experiments are conducted for central loading. One of images is resized and those images are subjected to IIIT. A suitable correction procedure is applied to results obtained from IIIT to get the final result. The same plates are modelled using ANSYS for known displacement and the partial slope and curvature values are determined. The obtained ANSYS results are exported to MATLAB for comparison of results with experiments and the least square errors are presented.
The role of cushion pressure in hydraulic press plays a vital role in forming the component. In the present work, an attempt was made to analyse the influence of Magnetorheological cushion in addition to the existing cushion system, in forming small cup shaped component. The innovative Magnetorheological assisted hydraulic press of 1 ton capacity is designed and fabricated. The formability of Aluminium and Galvanised Iron sheet of different thickness was analyzed. The Magnetorheological cushion improves the formability of components with the reduced number of wrinkles in it. The forming process with the Magnetorheological fluid assisted cushion hydraulic press was more efficient than ordinary hydraulic presses.
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