Table 5 Tensile strength results and the signal to noise ratio of the Al-BP-CA Hybrid composite.

From: Development, modelling and optimization of process parameters on the tensile strength of aluminum, reinforced with pumice and carbonated coal hybrid composites for brake disc application

Runs

Factors

Tensile strength

(S/N)

BP (vol%)

CA (vol%)

SP (rpm)

TP (°C)

SD (min)

Mean (MPa)

S/N ratio (dB)

Error bars

1

2.5

2.5

200

700

5

132.05

42.41

0.047

2

2.5

5

300

750

10

135.02

42.61

0.049

3

2.5

7.5

400

800

15

141.98

43.11

0.026

4

2.5

10

500

850

20

134.88

42.66

0.063

5

5

2.5

300

800

20

145.00

43.23

0.033

6

5

5

200

850

15

157.00

43.92

0.075

7

5

7.5

500

700

10

161.55

44.22

0.136

8

5

10

400

750

5

125.52

42.04

0.214

9

7.5

2.5

400

850

10

169.09

44.56

0.061

10

7.5

5

500

800

5

166.00

44.4

0.136

11

7.5

7.5

200

750

20

165.04

44.35

0.052

12

7.5

10

300

700

15

154.52

43.84

0.133

13

10

2.5

500

750

15

142.00

43.05

0.035

14

10

5

400

700

20

163.68

44.33

0.077

15

10

7.5

300

850

5

137.80

42.85

0.068

16

10

10

200

800

10

132.04

42.41

0.067

Mean

     

147.70

43.37

 

Control (As Cast)

   

125.24

  
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