Abstract: Groundwater is a primary source of fresh water in this tropical region. There has been a growing demand for fresh water for various purposes, such as domestic, agricultural, and industrial uses. In order to meet the demand, the delineation of potential groundwater zones is essential. Electrical resistivity method is particularly suitable for groundwater studies because soil physical properties such as moisture content and grain size characteristic can be correlated to resistivity values. The resistivity technique is essentially concerned with the measurement of electrical resistivity of subsurface materials, which preferentially provides information on the different geological layers, structures and the associated occurrence of groundwater. A 2-D electrical resistivity imaging method was employed in this survey work where three (3) resistivity lines were laid. The results of resistivity survey were presented in images showing the subsurface profiles under the survey lines. The result h

• Publication Date: 22-Feb-2015
• DOI: 10.15224/978-1-63248-039-2-22
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Abstract: Abrasive Water Suspension Jet (AWSJ) is one of the emerging non-traditional machining tools used in machining of brittle, heat sensitive materials and composites. Usually machining is carried out by the AWS jet in the air. Presence of air around the jet may lead to jet expansion which results in increased kerf width. In the present research work an attempt has been made to investigate the effect of various process parameters on kerf width using AWSJ submerged in water while machining of Glass Fiber Reinforced Plastic (GFRP) composite material. The experimental results indicate that the top kerf width decreases by 3% during under water machining as compared to that of free air machining.

• Publication Date: 22-Feb-2015
• DOI: 10.15224/978-1-63248-039-2-23
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