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Investigation of the Shaft Failure Connected to Extruder

Pelaseyed, S. S ; Sharif University of Technology | 2015

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  1. Type of Document: Article
  2. DOI: 10.1007/s11668-015-0030-9
  3. Publisher: Springer New York LLC , 2015
  4. Abstract:
  5. In this study, the failure analysis of a shaft of a unit, which had been failed during the service, was studied. This shaft was welded to the blades, and their chemical compositions were determined by spectroscopy method. In order to determine the root cause of failure and contribution factors, different investigation methods including visual examination, optical microscopy and scanning electron microscope analysis, and hardness test were carried out. It was concluded that the shaft was failed due to fatigue. The failure was caused by improper welding of blades to the shaft. At the end, in order to prevent or decelerate such failure, some recommended remedies were suggested
  6. Keywords:
  7. Fatigue ; Fracture surface ; Chemical analysis ; Fatigue of materials ; Fracture ; Scanning electron microscopy ; Spectroscopic analysis ; Steel ; Welding ; Chemical compositions ; Fracture surfaces ; HAZ ; Investigation methods ; Ratchet mark ; Root cause of failures ; Scanning electrons ; Weld metal ; Failure analysis
  8. Source: Journal of Failure Analysis and Prevention ; Volume 15, Issue 6 , 2015 , Pages 775-781 ; 15477029 (ISSN)
  9. URL: http://link.springer.com/article/10.1007%2Fs11668-015-0030-9