Process Effect on Dynamic Response Behavior of Water Confining Layer in Laser Peening

ZHAO Nianyou; CHENG Han; HU Yongxiang

doi:10.16080/j.issn1671-833x.2021.12.047

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Process Effect on Dynamic Response Behavior of Water Confining Layer in Laser Peening

更新时间：2025-10-30

- Process Effect on Dynamic Response Behavior of Water Confining Layer in Laser Peening
- Aeronautical Manufacturing Technology Vol. 64, Issue 12, Pages: 47-52(2021)
- 作者机构：
  
  上海交通大学机械与动力工程学院，机械系统与振动国家重点实验室,上海,200240
- 作者简介：
- 基金信息：
- DOI：10.16080/j.issn1671-833x.2021.12.047
  CLC：
- Published：2021
- 稿件说明：
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赵念友，程晗，胡永祥. 激光喷丸工艺参数对水约束层动态响应的影响[J]. 航空制造技术, 2021, 64(12): 47-52/69.

ZHAO Nianyou, CHENG Han, HU Yongxiang. Process Effect on Dynamic Response Behavior of Water Confining Layer in Laser Peening. 航空制造技术, 2021, 64(12): 47-52/69.
赵念友，程晗，胡永祥. 激光喷丸工艺参数对水约束层动态响应的影响[J]. 航空制造技术, 2021, 64(12): 47-52/69. DOI： 10.16080/j.issn1671-833x.2021.12.047.

ZHAO Nianyou, CHENG Han, HU Yongxiang. Process Effect on Dynamic Response Behavior of Water Confining Layer in Laser Peening. 航空制造技术, 2021, 64(12): 47-52/69. DOI： 10.16080/j.issn1671-833x.2021.12.047.

摘要

研究激光冲击作用下水约束层的动态响应过程，对于提高冲击效应的稳定性和可靠性具有重要意义。通过建立激光冲击作用下水约束层动态响应的试验观测系统，分析不同脉冲能量和出水水压作用下水约束层动态响应时间和冲击效应的影响规律。研究结果表明，一定压力下的喷嘴圆柱射流在工件表面会形成一层稳定的水膜，能够满足激光冲击水约束层需求；在高能激光诱导等离子体冲击波作用下，水约束层爆炸飞溅并产生大量水雾，但连续水射流作用能够使得水约束层快速恢复，水雾也逐渐消散；不同脉冲能量和出水水压对水约束层动态响应时间和冲击效应无显著影响，水约束层恢复时间为 4~18ms，水雾持续时间为 30~50ms，允许激光器最大出光频率可达 20Hz 以上。

Abstract

It is important to research the dynamic response process of water confining layer under laser shock to improve the stability and reliability of shock effect. By establishing the experimental system for observing the dynamic response process of water confining layer under laser shock

the influence of pulse energy and water pressure on dynamic response time and shock effect are analyzed. The results show that a stable water film is formed on the workpiece surface by the cylindrical jet. Under the action of high energy laser-induced plasma shock wave

water confining layer bursts and produces a lot of water mist. And then under the action of continuous jet

water confining layer quickly recovers and water mist gradually dissipates. Pulse energy and water pressure have minor effect on the dynamic response time of water confining layer and shock effect. The recovery time of water confining layer range from 4 milliseconds to 18 milliseconds and water mist lasts for 30–50 milliseconds. By adjusting the process conditions reasonably

the maximum output frequency of the laser can reach 20Hz.

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