APPLICATION AND RESEARCH OF ACOUSTIC EMISSION TECHNOLOGY IN DYNAMIC MONITORING OF WIND TOWER

ZHANG PengLin; LIU RuiJun; WEI XiaoHong; KONG Peng; DENG HuiQing

doi:10.16579/j.issn.1001.9669.2016.03.008

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APPLICATION AND RESEARCH OF ACOUSTIC EMISSION TECHNOLOGY IN DYNAMIC MONITORING OF WIND TOWER

更新时间：2022-09-22

- APPLICATION AND RESEARCH OF ACOUSTIC EMISSION TECHNOLOGY IN DYNAMIC MONITORING OF WIND TOWER
- Journal of Mechanical Strength Vol. 38, Issue 3, Pages: 470-474(2016)
- 作者机构：
  
  1. 兰州理工大学省部共建有色金属先进加工与再利用国家重点实验室
  2. 宝色特种设备有限公司
- 作者简介：
- 基金信息：
- DOI：10.16579/j.issn.1001.9669.2016.03.008
  CLC：
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ZHANG PengLin, LIU RuiJun, WEI XiaoHong, et al. APPLICATION AND RESEARCH OF ACOUSTIC EMISSION TECHNOLOGY IN DYNAMIC MONITORING OF WIND TOWER. [J]. 38(3):470-474(2016)
DOI：

ZHANG PengLin, LIU RuiJun, WEI XiaoHong, et al. APPLICATION AND RESEARCH OF ACOUSTIC EMISSION TECHNOLOGY IN DYNAMIC MONITORING OF WIND TOWER. [J]. 38(3):470-474(2016) DOI： 10.16579/j.issn.1001.9669.2016.03.008.

摘要

针对裂纹对风电塔筒服役过程中的危害问题,采用声发射(AE)技术提取塔筒裂纹特征信号。通过塔筒的AE信号衰减试验及塔筒原材料(Q345E钢)的三点弯曲试验,采用小波分析法提取不同类型AE信号在相同频率段内所占的能量比例系数。结果表明:AE信号在焊缝处衰减较母材明显,在塔筒中传递距离最远可达6 m;Q345E钢弯曲损伤破坏程度与AE信号响应特性之间具有对应关系;不同类型AE信号在相同频率段内所占的能量比例系数差异明显,由此可根据其AE技术定性判断风电塔筒服役的安全程度。

Abstract

For the hazards caused by crack to wind tower in service process,acoustic emission（ AE） technology was applied for extracting the characteristic signal of the crack. The attenuation test for AE signal of the wind tower and three-point bending test for the wind tower material Q345 E steel were carried out. At the same time,proportionality coefficient of different types of AE signal at the same frequency band was extracted by using the wavelet analysis method. It is demonstrated that the AE signal decayed obviously at the weld joint compared to parent metal,meanwhile the signal can reached farthest 6 m in wind tower. There was a relationship between the bending damage level of steel Q345 E and AE signal response characteristic. The energy ratio coefficient of different types of AE signals in the same frequency band was significantly different. It shows that the degree of safety of wind power tower in service can be estimated qualitatively according to the AE technology.

关键词

裂纹风电塔筒声发射技术AE信号小波分析

Keywords

CrackWind towerAcoustic emission technologyAE signalWavelet analysis

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