Material Selection of Green Design Processes for Car Body via considering Environment Property

Table 1

AHP scale for combinations.

Numerical rating	Definition	Explanation
1	Equally preferred	Two activities contribute equally to the objective
3	Moderately preferred	Experience and judgment slightly favour one over another
5	Strongly preferred	Experience and judgment strongly favour one over another
7	Very strongly preferred	An activity is strongly favoured and its dominance is demonstrated in practice
9	Absolutely preferred	Importance of one over another affirmed on the highest possible order
2, 4, 6, and 8	Intermediate values	Used to represent compromise between the priorities listed above
Reciprocals (1/aij)	A value attributed when activity i is compared to activity j becomes the reciprocal when j is compared to i