The Design and Fabrication of Spring Testing Apparatus
Journal Title: IOSR Journal of Mechanical and Civil Engineering (IOSR-JMCE) - Year 2018, Vol 15, Issue 6
Abstract
A spring testing apparatus has a wide range of uses. Its application is mainly in academic and industriallaboratories. The need to test spring is essentially to determine spring characteristics likestiffness, shear stress twist angles on which other uses of spring are hinged. The apparatus is fabricated from mild steel and measures 750mm by 360mm in dimension. A rectangular hole measuring 600 mm by 90 mm,cut through the centre of the apparatus accommodates the load hanger which measures incremental load of the spring under investigation.Two steel rules, attached on each side of the rectangular hole enable the apparatus to measure the extension of the spring. A Mild Steel base is supported on four rubber bushings and these give the apparatus a firm stand and balance. The springs of different wire diameterswhich include 0.75, 0.73, 0.7 and 0.65 respectively, wereinvestigated.Findings showed that the spring with the highest diameter offered the highest resistance/stiffness to applied load. Also the computed shear stress showed that the spring with the lowest wire diameter offers the highest stress load. This improvised design is quite a useful apparatus in an academic lab in investigating a test spring and has huge industrial and economic values.
Authors and Affiliations
Adio M. A. , Chapi S. P.
Keywords
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- EP ID EP438860
- DOI 10.9790/1684-1506013844.
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