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. 2018 Aug 8;11(8):1382. doi: 10.3390/ma11081382

Table 7.

Experimental surface roughness results for experiment 2.

Test Ra1
(μm)
Ra2
(μm)
Ra3
(μm)
Ra4
(μm)
Ra5
(μm)
Ra6
(μm)
Ra
(μm)
SD
(μm)
1 12.761 14.304 13.034 12.87 16.46 12.586 13.669 1.499
2 15.695 16.514 13.67 15.371 16.64 16.431 15.720 1.123
3 19.471 21.602 22.279 19.625 20.775 20.536 20.715 1.096
4 16.733 18.797 14.103 13.592 17.96 14.047 15.872 2.250
5 16.108 16.705 15.439 15.04 15.91 13.965 15.528 0.955
6 16.082 18.292 16.925 14.068 14.827 14.734 15.821 1.590
7 11.591 13.259 14.995 11.947 19.792 14.446 14.338 2.987
8 18.971 19.016 20.688 19.352 20.013 18.499 19.423 0.797
9 16.789 16.559 16.638 14.482 16.302 15.181 15.992 0.939
10 16.39 17.199 19.007 16.626 18.918 16.354 17.416 1.236
11 17.142 14.435 14.746 16.892 17.001 16.796 16.169 1.232
12 16.283 16.893 18.545 16.305 17.521 17.145 17.115 0.849
13 10.698 12.158 12.455 11.721 18.122 11.319 12.746 2.706
14 18.357 19.093 19.091 17.274 20.99 17.999 18.801 1.275
15 18.175 18.1 20.777 16.035 15.569 16.799 17.576 1.891