Table 8 Mean CT calculations.

From: An experimental investigation on copper square electrode wear in electric discharge machining of Hastelloy B2

Levels

I

Ton

DC

SV

 

I

Ton

DC

SV

0.5 mm square electrode

0.6 mm square electrode

1

280.1

265.3

934.4

385.9

1

235.8

271.1

989.4

404.9

2

438.1

480.8

440.8

479.5

2

373.5

418.8

482.0

478.1

3

562.8

521.0

289.6

499.0

3

578.1

553.3

297.9

587.3

4

578.4

592.4

194.6

495.0

4

744.4

688.6

162.5

461.5

Maximum

578.4

592.4

934.4

499.0

Maximum

744.4

688.6

989.4

587.3

Minimum

280.1

265.3

194.6

385.9

Minimum

235.8

271.1

162.5

404.9

Delta

298.3

327.1

739.8

113.1

Delta

508.6

417.5

826.9

182.4

Rank

3

2

1

4

Rank

2

3

1

4

IP

51.6

55.2

79.2

22.7

IP

68.3

60.6

83.6

31.1

0.7 mm square electrode

0.8 mm square electrode

1

253.9

305.3

1014.5

473.9

1

266.6

221.4

1150.0

569.5

2

356.5

422.1

583.5

576.0

2

450.0

425.3

671.8

663.1

3

716.3

704.5

373.6

640.0

3

820.3

827.5

391.0

638.8

4

877.6

772.4

232.6

514.4

4

926.1

988.9

250.3

591.6

Maximum

877.6

772.4

1014.5

640.0

Maximum

926.1

988.9

1150.0

663.1

Minimum

253.9

305.3

232.6

473.9

Minimum

266.6

221.4

250.3

569.5

Delta

623.8

467.1

781.9

166.1

Delta

659.5

767.5

899.8

93.6

Rank

2

3

1

4

Rank

3

2

1

4

IP

71.1

60.5

77.1

26.0

IP

71.2

77.6

78.2

14.1