Showing 1,301 - 1,320 results of 1,366 for search 'fault three analysis methods', query time: 0.12s Refine Results
  1. 1301
  2. 1302
  3. 1303

    Alteration, mineralization, geochemistry and fluid inclusion investigations in Joftrud prospect area, southwest of Birjand by Omid Shareipour, Azadeh Malekzadeh Shafaroudi, Maryam Javidi Moghaddam

    Published 2024-12-01
    “…Also, 9 samples were selected for Au analysis with Fire assay in the same laboratory. Microthermometric tests and salinity determination of fluid inclusions were performed on 3 wafers of quartz minerals using a heating-freezing system, model THM 600 at Ferdowsi University of Mashhad, Iran. …”
    Get full text
    Article
  4. 1304

    基于改进EMD的齿轮箱故障特征提取方法研究 by 谌继南, 崔彦平, 王磊, 朱庆芹

    Published 2014-01-01
    “…According to Empirical mode decomposition(EMD)generally appearing to end effects in signal processing,combining features of non-stationary vibration signal from gearbox early faults,an improved EMD method is proposed.The method is based on the combination of piecewise Hermit interpolation of order three with extreme truncation and correlation coefficient screening method.Firstly,the piecewise Hermit interpolation of order three is used to calculate envelopes.Secondly,the signal and envelopes are truncated at the extreme the shortest distance to endpoints,and the middle of them is left for further processing.Lastly,after decomposition all of intrinsic mode functions(IMFs)are used to calculate correlation coefficients with the original signal,so as to find out main IMFs to be made further analysis.The results show that the improved EMD method can extract faults feature in gearbox effectively.…”
    Get full text
    Article
  5. 1305
  6. 1306

    Abnormal Operation Detection of Automated Orchard Irrigation System Actuators by Power Consumption Level by Shahriar Ahmed, Md Nasim Reza, Md Rejaul Karim, Hongbin Jin, Heetae Kim, Sun-Ok Chung

    Published 2025-01-01
    “…A demonstration orchard with four apple trees was set up in a 3 m × 3 m soil test bench inside a greenhouse, divided into two sections to enable independent irrigation schedules and management. …”
    Get full text
    Article
  7. 1307
  8. 1308
  9. 1309
  10. 1310
  11. 1311
  12. 1312

    Ring-shape and linear gold mining districts of zimbabwe: estimation of residual gold resources by P. A. Ignatov, S. A. Malyutin, A. A. Ivanov, A. S. Desyatkin, M. M. Lanchak

    Published 2024-01-01
    “…Identification of ring-shaped and linear ore districts confined to greenstone belts corresponding in configuration within the gold province of the Zimbabwe craton.Materials and methods. The main method for analyzing gold ore deposits was ore formation analysis. …”
    Get full text
    Article
  13. 1313
  14. 1314

    Evolution characteristics of stress field during crosscut tunneling in soft coal seams and prevention and control technologies for gas dynamic disasters by Jiang WANG, Jianguo WU, Mingqiang WANG, Lianhe GUAN, Xiong XIAO, Xu YU, Cheng ZHAI

    Published 2025-08-01
    “…The numerical simulation method was applied to conduct a three-dimensional evolution analysis of the stress distribution and failure range of the surrounding rock during the coal mining process of uncovering coal in crosscut. …”
    Get full text
    Article
  15. 1315
  16. 1316

    Data-driven measurement performance evaluation of voltage transformers in electric railway traction power supply systems by Zhaoyang Li, Muqi Sun, Jun Zhu, Haoyu Luo, Qi Wang, Haitao Hu, Zhengyou He, Ke Wang

    Published 2025-02-01
    “…This paper outlines a three-step, RMS data only method for evaluating VTs in TPSSs. …”
    Get full text
    Article
  17. 1317
  18. 1318

    Power Assessment and Performance Comparison of Wind Turbines Driven by Multivariate Environmental Factors by Bubin Wang, Bin Zhou, Denghao Zhu, Mingheng Zou, Zhao Rao, Haoxuan Luo, Weihao Ji

    Published 2025-07-01
    “…When applied to three 5.5 MW offshore wind turbines, the proposed method reveals significant differences among the units. …”
    Get full text
    Article
  19. 1319
  20. 1320