Thermal ablation law of nylon materials under laser irradiation

MENG Wen; HAN Xiao-fei; LI Yun-xia; LI Da

doi:10.3788/OPE.20142208.2014

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Thermal ablation law of nylon materials under laser irradiation

更新时间：2020-08-13

- Thermal ablation law of nylon materials under laser irradiation
- Optics and Precision Engineering Vol. 22, Issue 8, Pages: 2014-2019(2014)
- 作者机构：
  
  空军工程大学信息与导航学院,陕西西安,710077
- 作者简介：
- 基金信息：
- DOI：10.3788/OPE.20142208.2014
  CLC： TN249
- Received：25 September 2013，
  
  Revised：06 November 2013，
  
  Published：25 August 2014
- 稿件说明：
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蒙文, 韩晓飞, 李云霞等. 激光辐照下尼龙纤维材料的热烧蚀规律[J]. 光学精密工程, 2014,22(8): 2014-2019

MENG Wen, HAN Xiao-fei, LI Yun-xia etc. Thermal ablation law of nylon materials under laser irradiation[J]. Editorial Office of Optics and Precision Engineering, 2014,22(8): 2014-2019
蒙文, 韩晓飞, 李云霞等. 激光辐照下尼龙纤维材料的热烧蚀规律[J]. 光学精密工程, 2014,22(8): 2014-2019 DOI： 10.3788/OPE.20142208.2014.

MENG Wen, HAN Xiao-fei, LI Yun-xia etc. Thermal ablation law of nylon materials under laser irradiation[J]. Editorial Office of Optics and Precision Engineering, 2014,22(8): 2014-2019 DOI： 10.3788/OPE.20142208.2014.

摘要

为了得到激光辐照下尼龙材料的烧蚀规律，利用红外成像的方法分析了近红外连续激光辐照尼龙材料引起的热烧蚀现象。用摄像机和红外热像仪记录了尼龙材料在烧蚀过程中的主要现象和温度变化过程，并对实验结果与ANSYS仿真结果进行了对比。使用波长为976 nm，输出功率密度为1×10

W/m

、光斑高斯半径为10 mm的光束对尼龙材料进行照射的结果显示：开始时尼龙材料温度迅速上升，发生膨胀，并逐渐熔融分解;随着照射时间的增加，尼龙材料温度变化变缓，熔融部分向光斑边缘退化；当达到一定温度时，材料温度不再升高。由于受光束质量、材料性能不均匀、熔融部分向边缘退化等因素影响，得到的实验烧蚀结果与理论烧蚀结果稍有差异，但基本吻合，验证了实验方法及ANSYS数值仿真方案的可行性。

Abstract

To obtain the thermal ablation law of nylon materials under laser irradiation

the infrared imaging was used to explore thermal ablation phenomena of nylon materials under continuous infrared laser irradiation. A camera and an infrared thermal imager were used to record the main phenomena of laser ablation and its temperature field

and a comparison between experiment results and ANSYS simulation was performed. When the nylon was irradiated by using a 976 nm laser beam with an output power density of 1×10

W/m

and a spot semi-diameter of 10 mm

the experiments show that the temperature of nylon rises quickly at first

then

expands

melts and decomposes. As time goes on

the temperature of nylon changes slowly

and the melted parts degenerate into the spot edge. When the temperature of nylon reaches certain value

it is no longer rise. Affected by beam quality

material heterogeneous

melted parts degenerated and so on

it indicates that the experimental ablation results and the theoretical results are slightly different

but basically acceptable

which verifies the feasibility of the proposed method and ANSYS simulation.

关键词

Keywords

references

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