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Impact of Surface Roughness on Marine Steels -AISI 316L & UNS S32760 under Fatigue Loadings


Author(s):

Meghavath Mothilal , Vidya Jyothi Institute of Technology; P. Sampath Kumar, Vidya Jyothi Institute of Technology; Anindya Dey, Vidya Jyothi Institute of Technology

Keywords:

AISI 316L, UNSS 32760, Surface Roughness, Nano servo Hydraulic UTM, Universal slopes method

Abstract:

Fatigue is the temporary crackment, and permanent failure that occurs in most of the materials undergo for the continuous or Varying strains at nominal stresses that have more values. Fatigue could alter into cracks and cause fracture once a sufficient range of fluctuations come into considerations. Austenitic and Super duplex steels of different grades are widely used as marine application in the coming introduction below such as boat rails and hardware, facades of buildings, pharmaceutical and bio-processing, Dairy and Food, brewery and other beverage industries due to its high corrosion resistance, and heat resistance provide the excellent fabric ability and formability. Steel round bars are machined as per the specimen geometry to be tested on the Nano servo hydraulic fatigue testing machine to investigate the life cycles of the steels. The specimens of the given geometry is machined with various surface roughnesses and tested on the machine so as to obtain the life cycles of the specimens. Variation on the life cycles is seen depending upon the surface roughness present on the specimens. This is approached by Modified method given by Murlidhar and Mansons method given in the year 1910 and the method is known as Universal slopes method. This approach is totally based on total Strain controlled analysis.


Other Details:

Manuscript Id :IJSTEV6I2012
Published in :Volume : 6, Issue : 2
Publication Date: 01/09/2019
Page(s): 9-14
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