Study on Cracking of Aluminum Alloy Strain Clamps for 500kV Transmission Line

Yu Tong Zhou; Zheng Qiang Zhou; Jiong Geng Wang; Hong Jian Luo; Jie Zhang; Jia Yuan Hu

doi:10.4028/www.scientific.net/SSP.279.10

Paper Titles

Preface

Mechanical Analysis of Low and High Chromium Steels Used in Hot Strip Work Rolls
p.3

Study on Cracking of Aluminum Alloy Strain Clamps for 500kV Transmission Line
p.10

Non-Destructive Criteria of Plastic Deformation and Fracture in Structural Metals
p.16

Behaviors of Continuous Cooling Transformation and Microstructure Evolution of a High Strength Weathering Prefabricated Building Steel
p.21

The Effect of Rolling Temperature on Grain Size and Toughness in Hot Rolled Q345E H-Beam Steel
p.26

High Temperature Internal Friction Relaxations in Cold-Rolled Titanium
p.30

Effect of Magnetic Field on Solidification Behavior of a MnCu Damping Alloy
p.35

Microstructure Evolution of Copper by Three Roll Planetary Milling
p.44

HomeSolid State PhenomenaSolid State Phenomena Vol. 279Study on Cracking of Aluminum Alloy Strain Clamps...

Study on Cracking of Aluminum Alloy Strain Clamps for 500kV Transmission Line

Abstract:

It was found that a large number of aluminum alloy strain clamps cracked. Cracking mainly occurred in the drainage plate of strain clamps. Nondestructive testing technologies and physicochemical analysis devices such as optical microscope, spectrograph, SEM and EDS were adopted to analyze the reasons of cracking. The results tell that there are numerous shrinkage cavities and cracks inside the drainage plate of strain clamps. The maximum area fraction of shrinkage cavities is 10.7%, and the maximum size is over 1mm². A lot of shrinkage cavities and cracks gather together to form big flaws, which seriously reduce the mechanical properties of the drainage plates. After a long period of vibration, cracks gradually develop to the surrounding cavities and connect adjacent cavities. Eventually, cracks develop to the surface of drainage plates.

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Periodical:

Solid State Phenomena (Volume 279)

Pages:

10-15

DOI:

https://doi.org/10.4028/www.scientific.net/SSP.279.10

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Online since:

August 2018

Authors:

Yu Tong Zhou*, Zheng Qiang Zhou, Jiong Geng Wang, Hong Jian Luo, Jie Zhang, Jia Yuan Hu

Keywords:

Aluminum Alloy, Cracking, Drainage Plate, Strain Clamp

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