Abstract
<p class="1Body">The present work deals with the design, construction and demonstration of a hydraulic pressure testing machine. The machine can be used universally to test a centrifugally cast iron pipe (from 80 to 600 mm diameter) under the applied hydraulic pressure. The developed machine can handle a maximum of 5 MPa pressure for 600 mm diameter pipe. The machine was designed using mild steel flats, plates and bars and was tested under maximum design pressure of 3.5 MPa. Stiffeners were used in proposed design, instead of thick end plates as used by earlier researchers. The modeling of machine was carried out using commercially available SolidWorks 14 and the validation of design was carried out using FE package ABAQUS 6.13. Several trials were carried out on design pressure and precise results of von-Mises stress were obtained well within the specified yield stress limits and significant decrease in total deformation of stiffened end plates. Added stiffeners also resulted in reduced material requirement, weight, higher cost effectiveness and being light in weight helps in easy handling at site.</p>
Highlights
A usable water supply network is a system of engineered hydrologic and hydraulic components, consisting of regions of various landforms and different environments
Stiffeners were welded to thin flat end plates in order to control its out of plane deformation
Added stiffeners reduced the deformation of end plates, material requirement, weight and increased cost effectiveness, age and usefulness of machine at site
Summary
A usable water supply network is a system of engineered hydrologic and hydraulic components, consisting of regions of various landforms and different environments. It is a means of delivery of water from the source to a point of treatment, water purification plant, transmission network and distribution through piping from storage to consumption areas. Contaminations sometimes occur due to the rusting of water supply pipes if they are not of any adequate corrosion resistant material. Crack like defects develop on pipe during the application of internal pressure and sometimes due to manufacturing and installation defects and sometimes with time, material deterioration occurs as a result of continued operation (Yamini & Lence, 2010). The pipes are tested for any leakage by applying adequate pressure before being laid for actual course of operation
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