Nr 1 - ITME

J. Borecki, J. Felba, A. Wymysłowski
Table 8. Results of main effects analysis of variant 2 in case of multi-criteria analysis.
Tabela 8. Wyniki analizy efektów głównych w wariancie 2 analizy wielokryterialnej.
Level of Factor
Factor 1 2 3
A 7.89 6.67 -
B 5.96 8.01 7.88
C 7.24 8.50 6.11
D 7.86 7.64 6.35
E 5.61 8.11 8.12
F 5.96 6.23 9.65
G 4.22 7.79 9.83
H 6.78 7.59 7.48
Table 9. Results of analysis of variance ANOVA of variant 2 in case of multi-criteria
analysis.
Tabela 9. Wyniki analizy wariancji ANOVA w wariancie 2 analizy wielokryterialnej.
Factor SS x
v V F SS’ P[%]
A 6.70 1 6.70 - - -
B 15.88 2 7.94 - - -
C 17.23 2 8.61 - - -
D 7.95 2 3.97 - - -
E 25.10 2 12.55 - - -
F 50.66 2 25.33 4.28 ** 38,81 17.29
G 96.85 2 48.42 8.18 *** 85,00 37.87
H 2.34 2 1.17 - - -
e 1.79 2 0.89 - - -
T 224.48 17 - - 224.48 100.00
e p
76.98 13 5.92 - 100.66 44.84
The results of analysis of variance ANOVA show that the shape of drilled microvia
with 150 µm diameter (in variant 1 and variant 2 of multi-criteria analysis) mostly
depends on two parameters, which are: Revolutions in spiral (factor F) and Power
of laser beam (factor G). The results of multi-criteria analysis are presented in Fig.
6. The best shape of microvia was achieved there where the parametrical results of
experiment are small as possible.
As it can be seen in Fig. 6, the best quality of microvia can be achieved in case
where both factor F and factor G are on the third level (F3 – Revolutions in spiral
is about 4, and G3 – Power of laser beam is about 0.8 W).
The more steep character of graph in reference to variant 2 (Fig. 6b) shows that
in this variant factor F and factor G have the most influence on microvia shape,
without influence of remain factors (as it can be seen in Fig. 6a).
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