2016 Prognostics and System Health Management Conference (PHM-Chengdu)最新文献_第10页

Research on equipment failure rate forecasting based on gray-linear regression combined model 基于灰色-线性回归组合模型的设备故障率预测研究

2016 Prognostics and System Health Management Conference (PHM-Chengdu) Pub Date : 2016-10-01 DOI: 10.1109/PHM.2016.7819821

Kunpeng Bi, Guo-hui Yan, Hongyuan Zhang, Na Tang

引用次数: 4

Analysis of demonstrable index and test method of prognostic capability 预测能力可论证性指标分析及测试方法

2016 Prognostics and System Health Management Conference (PHM-Chengdu) Pub Date : 2016-10-01 DOI: 10.1109/PHM.2016.7819942

Zhiao Zhao, J. Qiu, Guanjun Liu, Yong Zhang, Jiangpo Bai

引用次数: 0

Random vibration measured signal induction method research 随机振动测量信号感应方法研究

2016 Prognostics and System Health Management Conference (PHM-Chengdu) Pub Date : 2016-10-01 DOI: 10.1109/PHM.2016.7819920

Xie Anqi, Dong Shu, M. Haibo

引用次数: 0

A novel crack size quantification method based on lamb wave simulation 基于lamb波模拟的裂纹尺寸量化新方法

2016 Prognostics and System Health Management Conference (PHM-Chengdu) Pub Date : 2016-10-01 DOI: 10.1109/PHM.2016.7819857

Jingjing He, Yunmeng Ran, Jingsong Yang, Wei Zhang

{"title":"A novel crack size quantification method based on lamb wave simulation","authors":"Jingjing He, Yunmeng Ran, Jingsong Yang, Wei Zhang","doi":"10.1109/PHM.2016.7819857","DOIUrl":"https://doi.org/10.1109/PHM.2016.7819857","url":null,"abstract":"In recent years, Lamb wave has shown great potential in structural integrity assessment and life prediction due to the capability of traveling at large distances in structures with little energy loss. However, most of existing researches of Lamb wave based damage detection mainly focus on specific target systems. Physical models which correlate the crack size and damage sensitive features may vary with different structural geometry, loading profile et al. Therefore, it is of significant interest to develop a general methodology for reliable, efficient and accurate crack quantification for different structures. This paper presents a crack size quantification method based on finite element simulation. Lamb wave propagation mechanism is studied by Abaqus simulation. A series of simulations of both healthy plate and plates with different crack sizes are performed using Abaqus CAE. According to existing literatures, S0 mode of Lamb wave is sensitive with crack damage. Thus first wave package of S0 mode is chosen to extract damage features from measured time series. Two damage sensitive features: normalized amplitude and correlation coefficients are identified by analyzing simulation results and employed to establish a crack size quantification model. Considering the uncertainties caused by different manufacturing and environmental conditions, series of coupon tests are performed and the same damage sensitive features of testing data are extracted. The effectiveness of the proposed crack size quantification method is verified by data of coupon test.","PeriodicalId":202597,"journal":{"name":"2016 Prognostics and System Health Management Conference (PHM-Chengdu)","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123870266","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4

D-S quantification of aleatory uncertainty based on error assessment of intervals' endpoints 基于区间端点误差评估的测定不确定性的D-S量化

2016 Prognostics and System Health Management Conference (PHM-Chengdu) Pub Date : 2016-10-01 DOI: 10.1109/PHM.2016.7819804

Sheng-yong Hu

引用次数: 0

An improved method of HDP for optimal control in wiped film molecular distillation systems 一种用于擦膜分子蒸馏系统最优控制的改进HDP方法

2016 Prognostics and System Health Management Conference (PHM-Chengdu) Pub Date : 2016-10-01 DOI: 10.1109/PHM.2016.7819757

Hui Li, Wenjie Sun

引用次数: 1

A tacho-free technique for bearing fault diagnosis via the oscillatory behaviors based signal decomposition and generalized demodulation 基于振动特性的信号分解和广义解调的无转速轴承故障诊断技术

2016 Prognostics and System Health Management Conference (PHM-Chengdu) Pub Date : 2016-10-01 DOI: 10.1109/PHM.2016.7819837

Juanjuan Shi, Hua Ju, G. Cai, Zhongkui Zhu

{"title":"A tacho-free technique for bearing fault diagnosis via the oscillatory behaviors based signal decomposition and generalized demodulation","authors":"Juanjuan Shi, Hua Ju, G. Cai, Zhongkui Zhu","doi":"10.1109/PHM.2016.7819837","DOIUrl":"https://doi.org/10.1109/PHM.2016.7819837","url":null,"abstract":"Order tracking is one of the most widely used techniques for machine condition monitoring under variable speed. This method requires the shaft rotating speed beforehand. However, a tacho is not always allowed to be installed in the industry and furthermore the signal components associated to shaft rotating speed cannot be directly extracted from vibration signals for a bearing case. As such, this paper proposes a tacho-free method for bearing fault diagnosis based on the joint application of oscillatory behaviors based signal decomposition (OBSD) and generalized demodulation (GD) to address the problems. The OBSD method, which is capable of distinguishing impulses (low-oscillation component) from sustained oscillation signal components (high-oscillation component) based on the signal oscillatory behaviors, is firstly used to extract the incipient fault-induced impulses. The extracted impulsive-signal together with the short time Fourier transform (STFT) leads to a TFR dominated by fault-revealing trend lines, from which the instantaneous fault characteristic frequency (IFCF) can be estimated. Guided by the extracted IFCF, the GD is subsequently applied to mapping the trajectory of time-frequency component of interest into a linear path parallel to the time axis. The shaft rotating frequency and IFCF as well as their harmonics can then be identified on the order spectra which assemble all spectra of generalized demodulated signals. The experimental result validates the effectiveness of the proposed method for bearing fault diagnosis.","PeriodicalId":202597,"journal":{"name":"2016 Prognostics and System Health Management Conference (PHM-Chengdu)","volume":"4691 5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127865938","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Reconstitution of the three-dimensional temperature field inside the impenetrable solid 不可穿透固体内部三维温度场的重构

2016 Prognostics and System Health Management Conference (PHM-Chengdu) Pub Date : 2016-10-01 DOI: 10.1109/PHM.2016.7819864

Xinhong Hei, Jingfei Fu, Jinwei Zhao, Guirong Yan, Longlei Dong, Shilin Li, Qi Wang

引用次数: 0

Mesh characteristic and vibration response comprison for geared systems with crack and spalling faults using different modelling method 不同建模方法下含裂纹和剥落故障齿轮传动系统的啮合特性及振动响应比较

2016 Prognostics and System Health Management Conference (PHM-Chengdu) Pub Date : 2016-10-01 DOI: 10.1109/PHM.2016.7819812

Hui Ma, Mengjiao Feng, Ranjiao Feng, J. Zeng, B. Wen

引用次数: 1

Performance degradation assessment of train rolling bearings based on SVM and segmented vote method 基于支持向量机和分段投票法的列车滚动轴承性能退化评估

2016 Prognostics and System Health Management Conference (PHM-Chengdu) Pub Date : 2016-10-01 DOI: 10.1109/PHM.2016.7819891

Yong Qin, Dandan Wang, Xuejun Zhao, H. Jia, Y. Zhang

引用次数: 4