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孙聪 . 民用航空发动机叶片损伤原位检测与评价技术 [D ] . 哈尔滨 : 哈尔滨工业大学 , 2022 .

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李练兵 , 肖亚泽 , 张萍 , 等 . 基于CWT-RES34的风电机组叶片裂纹状态评估 [J ] . 噪声与振动控制 , 2024 , 44 ( 2 ): 143 - 148 ,293. 为有效进行风电机组叶片运行时的裂纹状态评估，提出一种基于连续小波变换(Continue Wavelet Transform，CWT)和残差神经网络(Residual Networks，ResNet)结合的叶片裂纹状态评估方法。首先对叶片加速度振动信号做CWT后生成二维彩色时频图像，然后将图像分别作为训练集和测试集，使用34 层ResNet 进行训练和诊断，最后选取天津某风电场提供的1.5 MW风力发电机作为研究对象，根据其样本数据将叶片故障程度按照裂纹长度和宽度分为健康、轻微、中等、严重、危险5 种状态，评估平均准确率高达98.23 %，方法的有效性和可行性得到验证。

LI L B , XIAO Y Z , ZHANG P , et al . State estimation of cracks of wind turbine blades based on CWT-RES34 [J ] . Noise and Vibration Control , 2024 , 44 ( 2 ): 143 - 148 ,293. (in Chinese)

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宋水舟 , 任会兰 , 宁建国 . 混合型加载下钢纤维混凝土损伤过程的声发射参数分析 [J ] . 兵工学报 , 2022 , 43 ( 8 ): 1881 - 1891 .

SONG S Z , REN H L , NING J G . Acoustic emission parameters in the damage process of steel fiber reinforced concrete under mixed loading [J ] . Acta Armamentarii , 2022 , 43 ( 8 ): 1881 - 1891 . (in Chinese) DOI: 10.12382/bgxb.2021.0468 http://doi.org/10.12382/bgxb.2021.0468 Using the acoustic emission (AE) technique, a series of Brazilian disk tests with a central notch (BDCN) under mixed loading are conducted to investigate the fracture mechanism of steel fiber reinforced concrete (SFRC). The evolution of the AE parameters during the fracture process is analyzed. The results indicate that the damage process consists of three stages based on the characteristics of the cumulative signal strength and load versus time relationships. The damage in the first stage is caused by the microcrack initiation, and then the coalescence and extension of microcracks. AE signals captured during the third stage are caused by the debonding and extension of steel fibers. By employing the machine learning algorithm and analyzing the AE parameters, the damage mechanism of SFRC is revealed. Using Gaussian mixture models, it is possible to classify damage sources as tensile cracks or shear cracks. Tensile cracks dominate the damage process, while shear cracks contribute to it. From the support vector machine, it is evident that the boundaries between tensile and shear cracks are not always straight lines passing through the origin.

黄振峰 , 刘永坚 , 毛汉颖 , 等 . 基于K熵和关联维数的金属疲劳损伤过程的声发射信号特征分析 [J ] . 振动与冲击 , 2017 , 36 ( 15 ): 210 - 214 .

HUANG Z F , LIU Y J , MAO H Y , et al . Feature analysis for acoustic emission signals during metal fatigue damage based on Kolmogorov entropy and correlation dimension [J ] . Journal of Vibration and Shock , 2017 , 36 ( 15 ): 210 - 214 . (in Chinese)

HA M Y , KIM J H , KIM S W . Crack detection in upsetting of aluminum alloy using acoustic emission monitoring technology [J ] . The International Journal of Advanced Manufacturing Technology , 2023 , 124 : 2823 - 2834 .

张治衡 . 基于声发射技术的航空发动机叶片损伤监测预示方法研究 [D ] . 北京 : 北京化工大学 , 2019 .

ZHANG Z H . Study on the monitoring of aviation engine blade damage based on acoustic emission technology [D ] . Beijing : Beijing University of Chemical Technology , 2019 . (in Chinese)

廖力达 , 向旭宏 , 舒王咏 , 等 . 基于声发射Ib值分析的渗铝321钢损伤特性研究 [J ] . 仪器仪表学报 , 2024 , 45 ( 1 ): 211 - 220 .

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门进杰 , 李东杰 , 兰涛 , 等 . 2205双相不锈钢疲劳损伤声发射研究 [J ] . 结构工程师 , 2023 , 39 ( 2 ): 142 - 153 . 2205双相不锈钢以其强度高、耐腐蚀、耐高温等优点成为桥梁结构的新兴材料,但其在疲劳荷载下的损伤问题对整体结构安全性能影响很大。为了明确2205双相不锈钢材料在疲劳荷载下的损伤发展情况,本文对3组相同矩形截面试件进行了三种不同应力比的拉伸疲劳损伤试验,同时进行声发射信号采集,通过声发射经历图分析探讨了声发射振铃计数及能量与试件裂缝发展程度的关系,并且采用裕度指标对试验过程进行了评估。结果表明,随着应力比的增大,声发射特征参数的循环周次有了一定的增长,且试件损伤进程放缓;同时裕度评价指标的变化范围逐渐减小,说明该指标可以较好地表征试件的疲劳损伤发展情况。基于试验和分析结果建立声发射累计振铃计数-疲劳裂纹长度的疲劳损伤模型,通过该模型得出的计算裂纹与实际裂纹发展趋势较为吻合。故本文研究成果可为2205双相不锈钢材料疲劳损伤检测和评估提供依据。

MEN J J , LI D J , LAN T , et al . Acoustic emission study on fatigue damage of 2205 duplex stainless steel [J ] . Structural Engineers , 2023 , 39 ( 2 ): 142 - 153 .(in Chinese) 2205 duplex stainless steel has become a new material for bridge structures due to its high strength, corrosion resistance, and high temperature resistance. However, its fatigue damage has a great impact on the safety performance of structures. In order to clarify the damage development of 2205 duplex stainless steel under fatigue load, fatigue damage tests with different stress ratios on three groups of specimens were carried out, and acoustic emission tests were conducted simultaneously. The relationship between acoustic emission ringing count and energy and the degree of crack development of the specimen was explored through the acoustic emission experience gragh. Meanwhile, a margin index was used to evaluate the test process. The results show that with the increase of stress ratio, the damage process of specimens slows down. Variation range of the margin evaluation index decreases gradually, indicating that the index can characterize the fatigue damage development of the specimen well. In addition, a fatigue damage model of acoustic emission cumulative ringing count-fatigue crack length was established. The cracks calculated by the fatigue damage model are consistent with the actual crack development trend. Therefore, the research results in this paper can provide a basis for the fatigue damage detection and evaluation of 2205 duplex stainless steel.

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