Journal of Composites / 2013 / Article / Tab 4

Research Article

Tribological Performance Optimization of Al-7.5% SiCp Composites Using the Taguchi Method and Grey Relational Analysis

Table 4

Computation of Grey Relational Grade.

Exp. no.Experimental dataNormalized dataValue of ΔGrey relational coefficientGrey relational grade
COFWear (µm)Normalized COFNormalized WEARΔ value COFΔ value WEARξ value COFξ value WEAR

10.34160.070.75290.84390.24710.15610.66930.76210.7157
20.32171.840.87060.65900.12940.34100.79440.59450.6944
30.38785.240.48240.44840.51760.55160.49130.47550.4834
40.32379.440.85880.53950.14120.46050.77980.52060.6502
50.37394.890.56470.29670.43530.70330.53460.41550.4751
60.303107.90.97650.09230.02350.90770.95510.35520.6551
70.31650.140.90001.00000.10000.00000.83331.00000.9167
80.34869.630.71180.69370.28820.30630.63430.62010.6272
90.31286.030.92350.43600.07650.56400.86730.46990.6686
100.39650.630.42940.99230.57060.00770.46700.98480.7259
110.46961.390.00000.82321.00000.17680.33330.73880.5361
120.46277.160.04120.57540.95880.42460.34270.54070.4417
130.39764.450.42350.77510.57650.22490.46450.68980.5771
140.43982.240.17650.49550.82350.50450.37780.49780.4378
150.45696.240.07650.27550.92350.72450.35120.40830.3798
160.29971.071.00000.67110.00000.32891.00000.60320.8016
170.30889.680.94710.37860.05290.62140.90430.44590.6751
180.336106.20.78240.11900.21760.88100.69670.36200.5294
190.38357.240.50590.88840.49410.11160.50300.81760.6603
200.40967.930.35290.72040.64710.27960.43590.64140.5386
210.41983.210.29410.48030.70590.51970.41460.49030.4525
220.38759.240.48240.85700.51760.14300.49130.77760.6345
230.45267.930.10000.72040.90000.27960.35710.64140.4993
240.40983.210.35290.48030.64710.51970.43590.49030.4631
250.36365.580.62350.75730.37650.24270.57050.67330.6219
260.39589.090.43530.38790.56470.61210.46960.44960.4596
270.334113.770.79410.00000.20591.00000.70830.33330.5208

We are committed to sharing findings related to COVID-19 as quickly as possible. We will be providing unlimited waivers of publication charges for accepted research articles as well as case reports and case series related to COVID-19. Review articles are excluded from this waiver policy. Sign up here as a reviewer to help fast-track new submissions.