Simulation Analysis and Verification of Single Pulse Laser Paint Removal Morphology with Multi Physics Field

Fig. 11. Single pulse ablation morphology at laser energy density of 21.66 J/cm².(a) Experiment;(b) double criteria; (c) temperature criterion; (d) section profiles of A-A

Download full size

Table 1. Thermal characteristic of paint and substrate

View table

Table 1. Thermal characteristic of paint and substrate

Parameter	Paint	Substrate
Density $ρ$ /（kg·m^-3）	1062	2640
Thermal conductivity $λ$ / （W·m^-1·℃^-1）	0.3	238
Specific heat $c$ /（J·kg^-1·℃^-1）	2510	950
Melting point /℃	151	500-640
Boiling point T_B /℃	165	—
Young’s modulus $Y$ /GPa	10	70
Poisson’s ratio $μ$	0.17	0.35
Thermal expansion $γ$	1.0×10^-6	2.65×10^-7

Table 2. Damage stress test results for paint
View table
Table 2. Damage stress test results for paint
Sample number
Local failure
$σ_{1}$ /MPa
Complete failure $σ_{2}$ /MPa
1 6.3 8.9
2 6.5 9.4
3 7.6 8.7

Table 3. Results of laser energy density
View table
Table 3. Results of laser energy density
Parameter Sample number
1 2 3 4
Average power P /W 5.5 7 8.5 10
Average energy density $φ$ /（J·cm^-2） 14.01 17.83 21.66 25.48

Table 4. Morphology parameters of paint removal under different working conditions

View table

Table 4. Morphology parameters of paint removal under different working conditions

Number	Maximum depth	Average depth	Maximum width	Average width
P1-1	6.30		34.96
P1-2	6.78	6.76	36.00	36.02
P1-3	7.20		37.10
P2-1	7.60		41.13
P2-2	8.30	8.10	42.66	42.29
P2-3	8.40		43.08
P3-1	11.20		54.48
P3-2	12.29	12.23	56.29	56.17
P3-3	13.20		57.74
P4-1	14.15		60.70
P4-2	15.00	15.15	62.28	62.08
P4-3	16.30		63.26

Table 5. Ablation volume at different laser powers

View table

Table 5. Ablation volume at different laser powers

Number	Experiment /μm³	Experimental average /μm³	Double criteria /μm³	Double criteria fitting degree /%	Temperature criterion /μm³	Temperature criterion fitting degree /%
P1-1	3165.35
P1-2	3300.50	3392.76	3182.24	93.8	2929.79	86.4
P1-3	3712.43
P2-1	5328.35
P2-2	5461.30	5534.52	5146.64	92.9	4658.62	84.2
P2-3	5813.91
P3-1	13549.60
P3-2	13695.80	13815.50	13055.65	94.5	12309.12	89.1
P3-3	14201.10
P4-1	21495.40
P4-2	22105.30	22268.69	20487.19	92.0	19461.01	87.4
P4-3	23205.37

Tools

Get Citation

Copy Citation Text

Guochun Liu, Hongfei Zhou, Wenfeng Yang, Dehui Lin, Guang'ao Chen. Simulation Analysis and Verification of Single Pulse Laser Paint Removal Morphology with Multi Physics Field[J]. Laser & Optoelectronics Progress, 2023, 60(15): 1514001

Download Citation

EndNote(RIS)BibTex Plain Text

Set citation alerts for article

Save article for my favorites