A process engineer is trying to improve the life of a cutting tool. He has run a 23 experiment using (1) cutting speed, (2) metal hardness, (3) and cutting angle as the factors. The data from the 2 replicates are shown below. (a) Do any of the 3 factors affect tool life? (b)what combination of the factor levels produces the longest tool life? (c) Is there a combination of cutting speed and cutting angle that always gives good results regardless of metal hardness?
A process engineer is trying to improve the life of a cutting tool. He has run a 23 experiment using (1) cutting speed, (2) metal hardness, (3) and cutting angle as the factors. The data from the 2 replicates are shown below. (a) Do any of the 3 factors affect tool life? (b)what combination of the factor levels produces the longest tool life? (c) Is there a combination of cutting speed and cutting angle that always gives good results regardless of metal hardness?
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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A process engineer is trying to improve the life of a cutting tool. He has run a 23 experiment using (1) cutting speed, (2) metal hardness, (3) and cutting angle as the factors. The data from the 2 replicates are shown below.
(a) Do any of the 3 factors affect tool life?
(b)what combination of the factor levels produces the longest tool life?
(c) Is there a combination of cutting speed and cutting angle that always gives good results regardless of metal hardness?
| Replicate | ||
| Run | I | II |
| (1) | 221 | 311 |
| a | 325 | 435 |
| b | 354 | 348 |
| ab | 552 | 472 |
| c | 440 | 453 |
| ac | 406 | 377 |
| bc | 605 | 500 |
| abc | 392 | 419 |
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