Multi-Response Optimization during the High-Speed Drilling of Composite Laminate Using the Grey Entropy Fuzzy Method (GEF)
Abstract
:Sl. No. | Content | |
1 | Introduction | |
2 | Materials and Methods | |
3 | Results and Discussion | |
4 | Optimization with Entropy-Weight-Based Grey Relational Analysis | |
4.1 | Grey Relational Analysis. | |
4.2 | Grey Relational Coefficient | |
4.3 | Grey Relational Grade | |
4.4 | Entropy Method | |
4.5 | Optimization with GREG | |
5 | Optimization using Grey Entropy Fuzzy method (GEFM). | |
Grey Entropy Fuzzy Method | ||
6 | Conclusion | |
References |
1. Introduction
2. Materials and Methods
3. Results and Discussion
4. Optimization with Entropy-Weight-Based Grey Relational Analysis
4.1. Grey Relational Analysis
4.2. Grey Relational Coefficient
4.3. Grey Relational Grade
4.4. Entropy Method
4.5. Optimization with GREG
5. Optimization Using the Grey Entropy Fuzzy Method (GEFM)
Grey Entropy Fuzzy Method
6. Conclusions
- ➢
- Temperature increases with increasing feed rates and spindle speeds. This is because increasing feed rates and spindle speeds increases the transformation of high energy and hence a higher dissipation of mechanical energy into heat.
- ➢
- Thrust force was found to decrease with increasing speed rotation. This is thought to be due to matrix softening because of increased drilling temperatures.
- ➢
- High spindle speeds with low feed result in a large hole size error due to the large frictional heating temperature at the tool–workpiece interface.
- ➢
- Peel-up delamination at lower spindle speeds is much smaller than that at greater spindle speeds.
- ➢
- Push-out delamination increases with an increase in both spindle speed and feed rate.
- ➢
- Because of the above factor dependencies, the optimum requirements of output factors call for different combinations of input parameters.
- ➢
- Considering all the responses simultaneously, using the Grey Entropy Fuzzy method, at a low level of spindle speed and feed rates (spindle speed: 12,000 rpm, and feed rate: 0.02 mm/rev) and moderate levels of the point angle and drill diameter (point angle: 118°, and drill diameter: 6 mm) the single optimum combination of machining conditions is indicated.
Supplementary Materials
Author Contributions
Funding
Data Availability Statement
Acknowledgments
Conflicts of Interest
References
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Drilling of the GFRP Laminate | |
---|---|
Equipment | Makino S33 VMC, with power 11 kW |
Workpiece | GFRP 3 mm thick |
Drilling Tools | Two-flute, 4, 6 and 8 mm diameter uncoated carbide (K20) drills of point angles 90°, 118° and 130° |
Drilling Conditions | Spindle speed—12,000, 15,000 and 18,000 rpm, Feed (mm/rev) 0.02, 0.05 and 0.1 |
Exp No. | Spindle Speed, rpm | Feed Rate, mm/rev | Point Angle, Degrees | Drill Diameter, mm |
---|---|---|---|---|
1 | 12,000 | 0.02 | 90 | 4 |
2 | 12,000 | 0.02 | 118 | 6 |
3 | 12,000 | 0.02 | 130 | 8 |
4 | 12,000 | 0.05 | 90 | 6 |
5 | 12,000 | 0.05 | 118 | 8 |
6 | 12,000 | 0.05 | 130 | 4 |
7 | 12,000 | 0.1 | 90 | 8 |
8 | 12,000 | 0.1 | 118 | 4 |
9 | 12,000 | 0.1 | 130 | 6 |
10 | 15,000 | 0.02 | 90 | 6 |
11 | 15,000 | 0.02 | 118 | 8 |
12 | 15,000 | 0.02 | 130 | 4 |
13 | 15,000 | 0.05 | 90 | 8 |
14 | 15,000 | 0.05 | 118 | 4 |
15 | 15,000 | 0.05 | 130 | 6 |
16 | 15,000 | 0.1 | 90 | 4 |
17 | 15,000 | 0.1 | 118 | 6 |
18 | 15,000 | 0.1 | 130 | 8 |
19 | 18,000 | 0.02 | 90 | 8 |
20 | 18,000 | 0.02 | 118 | 4 |
21 | 18,000 | 0.02 | 130 | 6 |
22 | 18,000 | 0.05 | 90 | 4 |
23 | 18,000 | 0.05 | 118 | 6 |
24 | 18,000 | 0.05 | 130 | 8 |
25 | 18,000 | 0.1 | 90 | 6 |
26 | 18,000 | 0.1 | 118 | 8 |
27 | 18,000 | 0.1 | 130 | 4 |
Experiment No. | Thrust Force (N) | Temperature, °C | Hole Size Error, mm | Circularity Error, mm | Delamination Factor | |
---|---|---|---|---|---|---|
Peel-Up | Push-Out | |||||
1 | 15.10 | 86.00 | 0.0415 | 0.0060 | 1.1650 | 1.0700 |
2 | 20.00 | 86.50 | 0.1920 | 0.0210 | 1.0740 | 1.0520 |
3 | 52.50 | 90.00 | 0.0130 | 0.0170 | 1.0310 | 1.0303 |
4 | 42.00 | 106.0 | 0.0430 | 0.0255 | 1.0595 | 1.0420 |
5 | 48.50 | 89.50 | 0.0215 | 0.0085 | 1.0484 | 1.0307 |
6 | 69.00 | 88.50 | 0.0975 | 0.1920 | 1.0742 | 1.1500 |
7 | 189.0 | 76.75 | 0.0970 | 0.0295 | 1.0502 | 1.0405 |
8 | 93.75 | 93.00 | 0.0030 | 0.0220 | 1.1550 | 1.2060 |
9 | 77.50 | 88.50 | 0.0250 | 0.0175 | 1.0825 | 1.0735 |
10 | 41.50 | 104.5 | 0.2790 | 0.0175 | 1.0960 | 1.0530 |
11 | 22.00 | 86.00 | 0.1035 | 0.0465 | 1.0502 | 1.0440 |
12 | 25.00 | 76.75 | 0.1860 | 0.1345 | 1.1420 | 1.1090 |
13 | 133.0 | 129.0 | 0.2020 | 0.0300 | 1.0470 | 1.0250 |
14 | 38.00 | 85.00 | 0.0290 | 0.0055 | 1.1300 | 1.1205 |
15 | 109.5 | 72.50 | 0.9885 | 0.0130 | 1.0535 | 1.0760 |
16 | 31.00 | 115.0 | 0.0795 | 0.0590 | 1.1940 | 1.1700 |
17 | 48.50 | 104.5 | 0.0220 | 0.0070 | 1.1080 | 1.0850 |
18 | 65.00 | 103.5 | 0.0465 | 0.0130 | 1.0510 | 1.0420 |
19 | 117.5 | 142.5 | 0.1010 | 0.0120 | 1.0425 | 1.0415 |
20 | 17.50 | 76.50 | 0.1455 | 0.2795 | 1.1150 | 1.1505 |
21 | 78.00 | 90.00 | 0.9750 | 0.0090 | 1.0535 | 1.0575 |
22 | 21.50 | 99.50 | 0.0270 | 0.0075 | 1.2100 | 1.2020 |
23 | 35.50 | 115.0 | 0.3175 | 0.1500 | 1.0710 | 1.0550 |
24 | 63.00 | 96.00 | 0.0510 | 0.0070 | 1.0465 | 1.0535 |
25 | 46.50 | 103.5 | 0.2625 | 0.0165 | 1.0900 | 1.0825 |
26 | 22.50 | 94.00 | 0.1900 | 0.0160 | 1.0465 | 1.0390 |
27 | 41.50 | 80.50 | 0.0170 | 0.0065 | 1.1900 | 1.2600 |
Sl. No. | Process Parameter | Taguchi Optimization Method for Individual Responses, Optimum Values | |||||
---|---|---|---|---|---|---|---|
Thrust Force | Temperature | Hole Size Error | Circularity Error | Peel-Up Delamination | Push-Out Delamination | ||
1 | Spindle speed, rpm | 18,000 | 12,000 | 12,000 | 18,000 | 12,000 | 12,000 |
2 | Feed rate, mm/rev | 0.02 | 0.02 | 0.10 | 0.10 | 0.05 | 0.02 |
3 | Point angle, degree | 118 | 130 | 118 | 90 | 130 | 90 |
4 | Drill diameter, mm | 4 | 4 | 4 | 8 | 8 | 8 |
Experiment No. | Normalized Values | Deviation Sequence | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
A | B | C | D | E | F | A | B | C | D | E | F | |
1 | 1.0000 | 0.8071 | 0.9609 | 1.0000 | 0.2514 | 0.8085 | 0.0000 | 0.1929 | 0.0391 | 0.0000 | 0.7486 | 0.1915 |
2 | 0.9718 | 0.8000 | 0.8082 | 0.9452 | 0.7598 | 0.8851 | 0.0282 | 0.2000 | 0.1918 | 0.0548 | 0.2402 | 0.1149 |
3 | 0.7849 | 0.7500 | 0.9899 | 0.9598 | 1.0000 | 0.9774 | 0.2151 | 0.2500 | 0.0101 | 0.0402 | 0.0000 | 0.0226 |
4 | 0.8453 | 0.5214 | 0.9594 | 0.9287 | 0.8408 | 0.9277 | 0.1547 | 0.4786 | 0.0406 | 0.0713 | 0.1592 | 0.0723 |
5 | 0.8079 | 0.7571 | 0.9812 | 0.9909 | 0.9028 | 0.9757 | 0.1921 | 0.2429 | 0.0188 | 0.0091 | 0.0972 | 0.0243 |
6 | 0.6901 | 0.7714 | 0.9041 | 0.3199 | 0.7587 | 0.4681 | 0.3099 | 0.2286 | 0.0959 | 0.6801 | 0.2413 | 0.5319 |
7 | 0.0000 | 0.9393 | 0.9046 | 0.9141 | 0.8927 | 0.9340 | 1.0000 | 0.0607 | 0.0954 | 0.0859 | 0.1073 | 0.0660 |
8 | 0.5477 | 0.7071 | 1.0000 | 0.9415 | 0.3073 | 0.2298 | 0.4523 | 0.2929 | 0.0000 | 0.0585 | 0.6927 | 0.7702 |
9 | 0.6412 | 0.7714 | 0.9777 | 0.9580 | 0.7123 | 0.7936 | 0.3588 | 0.2286 | 0.0223 | 0.0420 | 0.2877 | 0.2064 |
10 | 0.8482 | 0.5429 | 0.7199 | 0.9580 | 0.6369 | 0.8809 | 0.1518 | 0.4571 | 0.2801 | 0.0420 | 0.3631 | 0.1191 |
11 | 0.9603 | 0.8071 | 0.8980 | 0.8519 | 0.8927 | 0.9191 | 0.0397 | 0.1929 | 0.1020 | 0.1481 | 0.1073 | 0.0809 |
12 | 0.9431 | 0.9393 | 0.8143 | 0.5302 | 0.3799 | 0.6426 | 0.0569 | 0.0607 | 0.1857 | 0.4698 | 0.6201 | 0.3574 |
13 | 0.3220 | 0.1929 | 0.7981 | 0.9122 | 0.9106 | 1.0000 | 0.6780 | 0.8071 | 0.2019 | 0.0878 | 0.0894 | 0.0000 |
14 | 0.8683 | 0.8214 | 0.9736 | 1.0018 | 0.4469 | 0.5936 | 0.1317 | 0.1786 | 0.0264 | 0.0018 | 0.5531 | 0.4064 |
15 | 0.4572 | 1.0000 | 0.0000 | 0.9744 | 0.8743 | 0.7830 | 0.5428 | 0.0000 | 1.0000 | 0.0256 | 0.1257 | 0.2170 |
16 | 0.9086 | 0.3929 | 0.9224 | 0.8062 | 0.0894 | 0.3830 | 0.0914 | 0.6071 | 0.0776 | 0.1938 | 0.9106 | 0.6170 |
17 | 0.8079 | 0.5429 | 0.9807 | 0.9963 | 0.5698 | 0.7447 | 0.1921 | 0.4571 | 0.0193 | 0.0037 | 0.4302 | 0.2553 |
18 | 0.7131 | 0.5571 | 0.9559 | 0.9744 | 0.8883 | 0.9277 | 0.2869 | 0.4429 | 0.0441 | 0.0256 | 0.1117 | 0.0723 |
19 | 0.4112 | 0.0000 | 0.9006 | 0.9781 | 0.9358 | 0.9298 | 0.5888 | 1.0000 | 0.0994 | 0.0219 | 0.0642 | 0.0702 |
20 | 0.9862 | 0.9429 | 0.8554 | 0.0000 | 0.5307 | 0.4660 | 0.0138 | 0.0571 | 0.1446 | 1.0000 | 0.4693 | 0.5340 |
21 | 0.6383 | 0.7500 | 0.0137 | 0.9890 | 0.8743 | 0.8617 | 0.3617 | 0.2500 | 0.9863 | 0.0110 | 0.1257 | 0.1383 |
22 | 0.9632 | 0.6143 | 0.9756 | 0.9945 | 0.0000 | 0.2468 | 0.0368 | 0.3857 | 0.0244 | 0.0055 | 1.0000 | 0.7532 |
23 | 0.8827 | 0.3929 | 0.6809 | 0.4735 | 0.7765 | 0.8723 | 0.1173 | 0.6071 | 0.3191 | 0.5265 | 0.2235 | 0.1277 |
24 | 0.7246 | 0.6643 | 0.9513 | 0.9963 | 0.9134 | 0.8787 | 0.2754 | 0.3357 | 0.0487 | 0.0037 | 0.0866 | 0.1213 |
25 | 0.8194 | 0.5571 | 0.7367 | 0.9616 | 0.6704 | 0.7553 | 0.1806 | 0.4429 | 0.2633 | 0.0384 | 0.3296 | 0.2447 |
26 | 0.9574 | 0.6929 | 0.8102 | 0.9634 | 0.9134 | 0.9404 | 0.0426 | 0.3071 | 0.1898 | 0.0366 | 0.0866 | 0.0596 |
27 | 0.8482 | 0.8857 | 0.9858 | 0.9982 | 0.1117 | 0.0000 | 0.1518 | 0.1143 | 0.0142 | 0.0018 | 0.8883 | 1.0000 |
Response | |||
---|---|---|---|
A | 0.9799 | 0.0201 | 14 |
B | 0.9767 | 0.0233 | 17 |
C | 0.9760 | 0.0240 | 17 |
D | 0.9818 | 0.0182 | 13 |
E | 0.9683 | 0.0317 | 23 |
F | 0.9773 | 0.0227 | 16 |
Sum | 0.1400 | 100 |
Experiment No. | Grey Relational Coefficients | Grey Relational Entropy Grade | Rank | |||||
---|---|---|---|---|---|---|---|---|
A (0.14) | B (0.17) | C (0.17) | D (0.13) | E (0.23) | F (0.16) | |||
1 | 1.0000 | 0.7216 | 0.9275 | 1.0000 | 0.4004 | 0.7231 | 0.7794 | 8.5 |
2 | 0.9467 | 0.7143 | 0.7228 | 0.9012 | 0.6755 | 0.8131 | 0.8813 | 1 |
3 | 0.6992 | 0.6667 | 0.9801 | 0.9255 | 1.0000 | 0.9568 | 0.7790 | 10 |
4 | 0.7637 | 0.5109 | 0.9249 | 0.8752 | 0.7585 | 0.8736 | 0.8522 | 2 |
5 | 0.7225 | 0.6731 | 0.9638 | 0.9820 | 0.8372 | 0.9537 | 0.6335 | 25 |
6 | 0.6173 | 0.6863 | 0.8391 | 0.4237 | 0.6745 | 0.4845 | 0.7827 | 7 |
7 | 0.3333 | 0.8917 | 0.8398 | 0.8534 | 0.8234 | 0.8835 | 0.6265 | 26 |
8 | 0.5251 | 0.6306 | 1.0000 | 0.8953 | 0.4192 | 0.3936 | 0.7401 | 11 |
9 | 0.5822 | 0.6863 | 0.9573 | 0.9224 | 0.6348 | 0.7078 | 0.6875 | 18 |
10 | 0.7671 | 0.5224 | 0.6410 | 0.9224 | 0.5793 | 0.8076 | 0.8210 | 3 |
11 | 0.9265 | 0.7216 | 0.8306 | 0.7715 | 0.8234 | 0.8608 | 0.6642 | 21 |
12 | 0.8978 | 0.8917 | 0.7292 | 0.5156 | 0.4464 | 0.5831 | 0.7113 | 16 |
13 | 0.4245 | 0.3825 | 0.7123 | 0.8507 | 0.8483 | 1.0000 | 0.7255 | 13 |
14 | 0.7915 | 0.7368 | 0.9499 | 1.0037 | 0.4748 | 0.5516 | 0.7128 | 14 |
15 | 0.4795 | 1.0000 | 0.3333 | 0.9513 | 0.7991 | 0.6973 | 0.5891 | 27 |
16 | 0.8454 | 0.4516 | 0.8656 | 0.7207 | 0.3545 | 0.4476 | 0.7122 | 15 |
17 | 0.7225 | 0.5224 | 0.9629 | 0.9927 | 0.5375 | 0.6620 | 0.7868 | 6 |
18 | 0.6354 | 0.5303 | 0.9189 | 0.9513 | 0.8174 | 0.8736 | 0.7314 | 12 |
19 | 0.4592 | 0.3333 | 0.8341 | 0.9580 | 0.8861 | 0.8769 | 0.6600 | 22 |
20 | 0.9731 | 0.8974 | 0.7757 | 0.3333 | 0.5159 | 0.4835 | 0.6881 | 17 |
21 | 0.5802 | 0.6667 | 0.3364 | 0.9785 | 0.7991 | 0.7833 | 0.6576 | 23 |
22 | 0.9314 | 0.5645 | 0.9536 | 0.9892 | 0.3333 | 0.3990 | 0.6437 | 24 |
23 | 0.8100 | 0.4516 | 0.6104 | 0.4871 | 0.6911 | 0.7966 | 0.8008 | 5 |
24 | 0.6448 | 0.5983 | 0.9112 | 0.9927 | 0.8524 | 0.8048 | 0.6711 | 20 |
25 | 0.7347 | 0.5303 | 0.6550 | 0.9287 | 0.6027 | 0.6714 | 0.8177 | 4 |
26 | 0.9216 | 0.6195 | 0.7249 | 0.9319 | 0.8524 | 0.8935 | 0.6768 | 19 |
27 | 0.7671 | 0.8140 | 0.9724 | 0.9964 | 0.3602 | 0.3333 | 0.7794 | 8.5 |
Experiment No. | Grey Relational Coefficients | GRG | GEFG | |||||
---|---|---|---|---|---|---|---|---|
Thrust Force (0.14) | Temperature (0.17) | Hole Size Error (0.17) | Circularity Error (0.13) | Peel-Up Delamination (0.23) | Push-Out Delamination (0.16) | |||
1 | 1.0000 | 0.7216 | 0.9275 | 1.0000 | 0.4004 | 0.7231 | 0.7794 | 0.750 |
2 | 0.9467 | 0.7143 | 0.7228 | 0.9012 | 0.6755 | 0.8131 | 0.8813 | 0.946 |
3 | 0.6992 | 0.6667 | 0.9801 | 0.9255 | 1.0000 | 0.9568 | 0.7790 | 0.650 |
4 | 0.7637 | 0.5109 | 0.9249 | 0.8752 | 0.7585 | 0.8736 | 0.8522 | 0.875 |
5 | 0.7225 | 0.6731 | 0.9638 | 0.9820 | 0.8372 | 0.9537 | 0.6335 | 0.625 |
6 | 0.6173 | 0.6863 | 0.8391 | 0.4237 | 0.6745 | 0.4845 | 0.7827 | 0.750 |
7 | 0.3333 | 0.8917 | 0.8398 | 0.8534 | 0.8234 | 0.8835 | 0.6265 | 0.625 |
8 | 0.5251 | 0.6306 | 1.0000 | 0.8953 | 0.4192 | 0.3936 | 0.7401 | 0.750 |
9 | 0.5822 | 0.6863 | 0.9573 | 0.9224 | 0.6348 | 0.7078 | 0.6875 | 0.725 |
10 | 0.7671 | 0.5224 | 0.6410 | 0.9224 | 0.5793 | 0.8076 | 0.8210 | 0.839 |
11 | 0.9265 | 0.7216 | 0.8306 | 0.7715 | 0.8234 | 0.8608 | 0.6642 | 0.675 |
12 | 0.8978 | 0.8917 | 0.7292 | 0.5156 | 0.4464 | 0.5831 | 0.7113 | 0.750 |
13 | 0.4245 | 0.3825 | 0.7123 | 0.8507 | 0.8483 | 1.0000 | 0.7255 | 0.750 |
14 | 0.7915 | 0.7368 | 0.9499 | 1.0037 | 0.4748 | 0.5516 | 0.7128 | 0.700 |
15 | 0.4795 | 1.0000 | 0.3333 | 0.9513 | 0.7991 | 0.6973 | 0.5891 | 0.500 |
16 | 0.8454 | 0.4516 | 0.8656 | 0.7207 | 0.3545 | 0.4476 | 0.7122 | 0.750 |
17 | 0.7225 | 0.5224 | 0.9629 | 0.9927 | 0.5375 | 0.6620 | 0.7868 | 0.750 |
18 | 0.6354 | 0.5303 | 0.9189 | 0.9513 | 0.8174 | 0.8736 | 0.7314 | 0.678 |
19 | 0.4592 | 0.3333 | 0.8341 | 0.9580 | 0.8861 | 0.8769 | 0.6600 | 0.628 |
20 | 0.9731 | 0.8974 | 0.7757 | 0.3333 | 0.5159 | 0.4835 | 0.6881 | 0.675 |
21 | 0.5802 | 0.6667 | 0.3364 | 0.9785 | 0.7991 | 0.7833 | 0.6576 | 0.675 |
22 | 0.9314 | 0.5645 | 0.9536 | 0.9892 | 0.3333 | 0.3990 | 0.6437 | 0.625 |
23 | 0.8100 | 0.4516 | 0.6104 | 0.4871 | 0.6911 | 0.7966 | 0.8008 | 0.750 |
24 | 0.6448 | 0.5983 | 0.9112 | 0.9927 | 0.8524 | 0.8048 | 0.6711 | 0.686 |
25 | 0.7347 | 0.5303 | 0.6550 | 0.9287 | 0.6027 | 0.6714 | 0.8177 | 0.788 |
26 | 0.9216 | 0.6195 | 0.7249 | 0.9319 | 0.8524 | 0.8935 | 0.6768 | 0.700 |
27 | 0.7671 | 0.8140 | 0.9724 | 0.9964 | 0.3602 | 0.3333 | 0.7794 | 0.750 |
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Babu, J.; Madarapu, A.; Paul, L.; Ahmed, A.N.K.; Davim, J.P. Multi-Response Optimization during the High-Speed Drilling of Composite Laminate Using the Grey Entropy Fuzzy Method (GEF). Processes 2022, 10, 1865. https://doi.org/10.3390/pr10091865
Babu J, Madarapu A, Paul L, Ahmed ANK, Davim JP. Multi-Response Optimization during the High-Speed Drilling of Composite Laminate Using the Grey Entropy Fuzzy Method (GEF). Processes. 2022; 10(9):1865. https://doi.org/10.3390/pr10091865
Chicago/Turabian StyleBabu, Jalumedi, Anjaiah Madarapu, Lijo Paul, A. N. Khaleel Ahmed, and J. Paulo Davim. 2022. "Multi-Response Optimization during the High-Speed Drilling of Composite Laminate Using the Grey Entropy Fuzzy Method (GEF)" Processes 10, no. 9: 1865. https://doi.org/10.3390/pr10091865