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Chinese Journal of Mechanical Engineering

Table 4 Level of orthogonal test (mass fraction, %)

From: Copper-Free Resin-Based Braking Materials: A New Approach for Substituting Copper with Fly-Ash Cenospheres in Composites

Code

A

B

C

D

Factor

Fly-ash cenospheres

Resin

Coir fibre

Al2O3

Level

    

 1

10

10

5

10

 2

15

15

7.5

15

 3

20

20

10

20

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