Feasibility of Monitoring Strengthened Structure Crack via PVD Film Sensor

doi:10.7652/xjtuxb201807020

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Feasibility of Monitoring Strengthened Structure Crack via PVD Film Sensor

更新时间：2025-07-09

- Feasibility of Monitoring Strengthened Structure Crack via PVD Film Sensor
- Vol. 52, Issue 7, Pages: 139-145(2018)
- 作者机构：
  
  空军工程大学航空工程学院,西安,710038
- 作者简介：
- 基金信息：
- DOI：10.7652/xjtuxb201807020
  CLC： TP212.11;V215.6
- Online First：10 July 2018，
  
  Published：2018
- 稿件说明：
移动端阅览
Feasibility of Monitoring Strengthened Structure Crack via PVD Film Sensor[J]. 2018, 52(7): 139-145.
DOI：

Feasibility of Monitoring Strengthened Structure Crack via PVD Film Sensor[J]. 2018, 52(7): 139-145. DOI： 10.7652/xjtuxb201807020.

摘要

以基于离子镀膜技术制备的物理气相沉积(PVD)薄膜传感器和3种成熟度较高的结构强化技术为研究对象

在孔挤压强化、喷丸强化和激光冲击强化试验件上制备了PVD薄膜传感器。首先进行了静拉伸载荷下的PVD薄膜传感器与强化基体的应变对比试验

结果表明PVD薄膜传感器对强化结构高载荷下的应变较为敏感

与强化结构结合良好

具备在高应力环境下应用的潜力; 随后对比了不同强化工艺处理及表面处理状态试验件的疲劳寿命

应用显著性分析的方法

验证了PVD薄膜传感器的制备过程不会对强化基体的疲劳性能造成显著影响; 最后进行了激光冲击强化试验件的疲劳裂纹在线监测试验

结果表明

PVD薄膜传感器的监测信号结果与实际观测结果吻合较好

PVD薄膜传感器与强化基体具有良好的损伤一致性

适用于强化基体的疲劳裂纹监测。

Abstract

This study took the physical vapour deposition(PVD)film sensor prepared with ion plating technology and three kinds of structure strengthening process as the research objects. The PVD film sensor was deposited on the specimens treated by cold expansion

shot peening and laser shock peening

respectively. Firstly

the strain contrast test between PVD film sensor and strengthened substrates was carried out to show that PVD film sensor is sensitive to the strain of the strengthened substrates under high loading and bonds well with them

so it has the application potential in high stress environment. Then

the fatigue life contrast test of the specimens strengthened by different techniques and with different surface treatments was carried out

and the significance analysis shows that the PVD film sensor will not cause obvious change in the fatigue behaviour of the strengthened substrates. Finally

the fatigue crack online monitoring of the specimen treated by laser shock peening was carried out

and the results show that the detection signal matches well with the actual crack observations. So the PVD film sensor is proved to have a good damage consistency with the strengthened substrate

and is applicable to crack monitoring of strengthened structures.

关键词

Keywords

references

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