Parameter Optimization and Performance Test of Laser Cutting of Carbon Fiber Reinforced Plastics Based on Response Surface Method

Hongling Hou; Hailing Hao; Lü Ruihu; Yongqiang Zhao; Changqian Wang

doi:10.3788/LOP202259.1314005

Laser & Optoelectronics Progress, Volume. 59, Issue 13, 1314005(2022)

Parameter Optimization and Performance Test of Laser Cutting of Carbon Fiber Reinforced Plastics Based on Response Surface Method

Hongling Hou^*, Hailing Hao, Lü Ruihu, Yongqiang Zhao, and Changqian Wang

Author Affiliations

School of Mechanical Engineering, Shaanxi University of Technology, Hanzhong 723001, Shaanxi , China

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Figures & Tables(15)

Fig. 1. Dingdian laser cutting equipment

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Fig. 2. Schematic diagram of equal distance marking for cutting seam

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Fig. 3. Distributions of predicted and actual values. (a) Cutting entrance width; (b) HAZ width; (c) kerf taper angle

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Fig. 4. Influence of interaction between laser power and cutting speed on slit entrance width. (a) Response surface; (b) contour map

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Fig. 5. Influence of interaction between laser power and cutting speed on HAZ width. (a) Response surface; (b) contour map

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Fig. 6. Influence of interaction between laser power and cutting speed on kerf taper angle.(a) Response surface; (b) contour map

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Fig. 7. Optimal combination cutting effect. (a) Positive; (b) kerf taper angle

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Fig. 8. Schematic diagram of specimen bonding and adhesive layer thickness control. (a) Specimen bonding; (b) adhesive layer thickness control

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Fig. 9. Failure mode of bonded tensile shear specimen. (a) Central test point specimen; (b) parameter optimization combination specimen

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Table 1. Horizontal coding table
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Table 1. Horizontal coding table
Factor X Level
-1 0 1
Power /W X₁ 700 800 900
Speed /（mm·s^-1） X₂ 20 25 30
Focus position /mm X₃ -1.5 -1 -0.5
Air pressure /MPa X₄ 0.5 0.6 0.7

Table 2. Experimental results

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Table 2. Experimental results

Number	X₁	X₂	X₃	X₄	A /W	B /（mm·s^-1）	C /mm	D /MPa	ψ /μm	H /μm	θ /（°）
1	-1	-1	0	0	700	20	-1.0	0.6	452.45	1352.04	3.81
2	1	-1	0	0	900	20	-1.0	0.6	507.74	1859.20	3.62
3	-1	1	0	0	700	30	-1.0	0.6	436.78	1293.72	4.89
4	1	1	0	0	900	30	-1.0	0.6	489.90	1732.96	4.28
5	0	0	-1	-1	800	25	-1.5	0.5	489.96	1538.62	4.79
6	0	0	1	-1	800	25	-0.5	0.5	456.20	1383.18	4.66
7	0	0	-1	1	800	25	-1.5	0.7	466.92	1346.88	4.57
8	0	0	1	1	800	25	-0.5	0.7	444.60	1311.16	4.17
9	-1	0	0	-1	700	25	-1.0	0.5	475.02	1356.32	4.91
10	1	0	0	-1	900	25	-1.0	0.5	514.42	1923.40	4.43
11	-1	0	0	1	700	25	-1.0	0.7	452.84	1306.32	4.46
12	1	0	0	1	900	25	-1.0	0.7	488.94	1712.05	4.11
13	0	-1	-1	0	800	20	-1.5	0.6	477.83	1481.56	4.28
14	0	1	-1	0	800	30	-1.5	0.6	456.43	1393.00	4.65
15	0	-1	1	0	800	20	-0.5	0.6	472.25	1353.00	3.52
16	0	1	1	0	800	30	-0.5	0.6	446.74	1303.00	4.58
17	-1	0	-1	0	700	25	-1.5	0.6	477.32	1395.80	4.91
18	1	0	-1	0	900	25	-1.5	0.6	518.88	1877.56	4.56
19	-1	0	1	0	700	25	-0.5	0.6	458.40	1266.80	4.51
20	1	0	1	0	900	25	-0.5	0.6	496.88	1803.35	4.21
21	0	-1	0	-1	800	20	-1.0	0.5	487.90	1481.75	3.88
22	0	1	0	-1	800	30	-1.0	0.5	462.30	1398.23	4.60
23	0	-1	0	1	800	20	-1.0	0.7	456.35	1362.10	3.49
24	0	1	0	1	800	30	-1.0	0.7	446.70	1284.50	4.36
25	0	0	0	0	800	25	-1.0	0.6	461.08	1339.36	4.11
26	0	0	0	0	800	25	-1.0	0.6	463.50	1381.36	4.18
27	0	0	0	0	800	25	-1.0	0.6	469.80	1346.45	4.12
28	0	0	0	0	800	25	-1.0	0.6	472.23	1339.23	4.16
29	0	0	0	0	800	25	-1.0	0.6	469.56	1348.56	4.09
30	0	0	0	0	800	25	-1.0	0.6	471.62	1336.35	4.15

Table 3. Prediction function of target response

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Table 3. Prediction function of target response

Parameter

Prediction function

Cutting entrance width

ψ=468.27+21.99A-9.63B-9.35C-10.78D+14.89A²-7.12B²

HAZ width

H=1352.98+244.7A-40.35B-51.07C-63.20D-16.97AB-40.33AD+29.92CD+

204.70A²+26.50C²+20.32D²

Kerf taper angle

θ=4.13-0.19A+0.39B-0.17C-0.17D-0.10AB+0.17BC-0.06CD+0.17A²-0.16B²+0.26C²+0.14D²

Table 4. Parameter optimization combination and index prediction

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Table 4. Parameter optimization combination and index prediction

Parameter optimization combination				Index prediction
Power /W	Speed /（mm·s^-1）	Focus position /mm	Air pressure /MPa	Predictor	Predicted value	Fluctuation range
755	20	-0.6	0.7	ψ /μm	445.02	±22.01
				H /μm	1299.58	±42.68
				θ /（°）	3.39	±0.18

Table 5. Measurement results and error of parameter optimization combination test
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Table 5. Measurement results and error of parameter optimization combination test
Parameter ψ /μm H /μm θ /（°）
Measurement results 457.75 1306.13 3.51
Deviation from predicted value 12.73 6.55 0.12

Table 6. Maximum load of glued tensile shear damage
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Table 6. Maximum load of glued tensile shear damage
Experimental group Central test point Parameter optimization combination
Average /N 3938.67 4837.33
Serial number 1 2 3 1 2 3
Maximum load /N 4316 3116 4384 4852 4870 4790

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Hongling Hou, Hailing Hao, Lü Ruihu, Yongqiang Zhao, Changqian Wang. Parameter Optimization and Performance Test of Laser Cutting of Carbon Fiber Reinforced Plastics Based on Response Surface Method[J]. Laser & Optoelectronics Progress, 2022, 59(13): 1314005

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