Analysis Analysis and Suggestions on Device Clamp Screw Fracture of 110kV Transmission Line

2014 ◽  
Vol 989-994 ◽  
pp. 69-73
Author(s):  
Xue Xia Xu ◽  
Wei Yong Li ◽  
Guang Xing Zhang ◽  
Yan Ting Feng ◽  
Hao Ke ◽  
...  
Keyword(s):  
Mechanical Property ◽  
Chemical Composition ◽  
Transmission Line ◽  
Heat Processing ◽  
Composition Analysis ◽  
Material Degradation ◽  
Edax Analysis ◽  
Fracture Failure ◽  
Microstructure Observation ◽  
Chemical Composition Analysis

Fracture failure analysis on device clamp screws of one 110kV transmission line has been carried out based on results of macro-observation, pre-tightening test, mechanical property examination, chemical composition analysis, microstructure observation, SEM observation and EDAX analysis. It is concluded that the main reason of the screw fracture lies in misuse material and improper heat processing which led to material degradation. Suggestions are put forward finally.

Reasons Analysis on Corrosion Perforation of L245 Pipeline from Interior Wall

2021 ◽  
Vol 1035 ◽  
pp. 578-583
Author(s):  
Gang Wu ◽  
Peng Zhang ◽  
Li Xia Zhu ◽  
Jin Heng Luo ◽  
Li Feng Li ◽  
...  
Keyword(s):  
Mechanical Property ◽  
Chemical Composition ◽  
Synergistic Effect ◽  
Medium Composition ◽  
Local Corrosion ◽  
Composition Analysis ◽  
Product Analysis ◽  
Oil Pipeline ◽  
Chemical Composition Analysis ◽  
Pipe Replacement

The leakage accident of corrosion perforation occurred in the L245 oil pipeline. After pipe replacement,the defects were analyzed by means of macro analysis, corrosion product analysis, medium composition analysis, chemical composition analysis, mechanical property test and SEM. The results showed that the corrosion perforation was caused by local corrosion, and the synergistic effect of HCO3- and Cl- in transportation medium was the main cause of local corrosion.

scholarly journals Fracture Failure Analysis of the Energy Storage Spring of the Circuit Breaker in the 110kV Substation

2021 ◽  
Vol 2076 (1) ◽  
pp. 012094
Author(s):  
Jun Wang ◽  
Rong Huang ◽  
Haiqing Hu ◽  
Xianhui Cao ◽  
Junjun Chen ◽  
...  
Keyword(s):  
Energy Storage ◽  
Chemical Composition ◽  
Energy Spectrum ◽  
Failure Analysis ◽  
Spectrum Analysis ◽  
Circuit Breaker ◽  
Control Measures ◽  
Composition Analysis ◽  
Fracture Failure ◽  
Chemical Composition Analysis

Abstract Through a macro inspection, chemical composition analysis, hardness inspection, graphite carbon inspection and energy spectrum analysis, the reason for the break of the energy storage spring of the circuit breaker in a 110kV substation are analyzed. The results show that poor manufacturing technology and anti-corrosion technology of the spring are the main reason for its fracture. Corresponding control measures are put forward to avoid similar failures from happening again.

scholarly journals Correction: Yu, D.Q., et al. Microscopic Characteristic and Chemical Composition Analysis of Three Medicinal Plants and Surface Frosts. Molecules 2019, 24, 4548

Molecules ◽  
2021 ◽  
Vol 26 (2) ◽  
pp. 379
Author(s):  
Da Qing Yu ◽  
Xiao Jing Han ◽  
Ting Yu Shan ◽  
Rui Xu ◽  
Jin Hu ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Medicinal Plants ◽  
Composition Analysis ◽  
Microscopic Characteristic ◽  
Chemical Composition Analysis

The authors would like to correct an error in the title paper [...]

Chemical composition analysis of carbohydrate fragmentation products

2021 ◽  
Vol 156 ◽  
pp. 105112
Author(s):  
Samin Fathalinejad ◽  
Esben Taarning ◽  
Peter Christensen ◽  
Jan H. Christensen
Keyword(s):  
Chemical Composition ◽  
Composition Analysis ◽  
Chemical Composition Analysis

Research on Process Mineralogy of Potassium-Rich Shale

2010 ◽  
Vol 158 ◽  
pp. 197-203 ◽  
Author(s):  
Jie Liu ◽  
Yue Xin Han ◽  
Wan Zhong Yin
Keyword(s):  
Chemical Composition ◽  
Mineral Composition ◽  
Potassium Feldspar ◽  
Composition Analysis ◽  
Research Results ◽  
Dsc Analyses ◽  
Process Mineralogy ◽  
Mineral Compositions ◽  
Chemical Composition Analysis

The process mineralogy of potassium-rich shale from Chaoyang of Liaoning, China, was studied. Research results showed there are much less variety and smaller quantities in mineral compositions. Calculated mineral composition by means of chemical composition analysis combined with XRD, MLA, IR and TG-DSC analyses showed that main minerals with were Potassium-feldspar, muscovite, biotite and illite, and gangue minerals were quartz and small amounts of hematite. Potassium-rich minerals such as potassium-feldspar and muscovite contact smoothly with quartz respectively, and there was the direction arrangement among potassium-feldspar, quartz and muscovite in the shale. And quartz and hematite were main cement in the shale. The influences of the research results on the potassium extraction from potassium-rich shale were distinct.

scholarly journals Chemical composition analysis of the essential oil of Solanumn nigrum L. by HS/SPME method and calculation of the biochemical coefficients of the components

2017 ◽  
Vol 10 ◽  
pp. S2372-S2375 ◽  
Author(s):  
Avat (Arman) Taherpour ◽  
Mohammad Mehdi Khodaei ◽  
Baram Ahmed Hama Ameen ◽  
Majid Ghaitouli ◽  
Nosratollah Mahdizadeh ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Essential Oil ◽  
Composition Analysis ◽  
Chemical Composition Analysis

Comparison of machine learning techniques to optimize the analysis of plutonium surrogate material via a portable LIBS device

2021 ◽  
Author(s):  
Ashwin P. Rao ◽  
Phillip R. Jenkins ◽  
John D. Auxier II ◽  
Michael B. Shattan
Keyword(s):  
Machine Learning ◽  
Chemical Composition ◽  
Machine Learning Techniques ◽  
Composition Analysis ◽  
Learning Techniques ◽  
Chemical Composition Analysis

Enhancing the analytical capabilities of a hand-held LIBS device for chemical composition analysis of a plutonium surrogate using different machine learning paradigms.

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