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Some aspects in failure analysis of cranes

Author(s):
1. Nenad Zrnic, FME Belegrade, Serbia


Abstract:
Failure of a structural or mechanical component of crane usually can be associated with materials-related problems and/or design-related problems (which may include, depending on the definition of design, unexpected service environment as well as a poor design of structure), as well as the fabrication-related problems or inadequate structural maintenance. Also, crane components and structure experience a spectrum of stresses while operating. Therefore, about ten percent of material handling high-performance machines failures can be attributed to fatigue failure. In most cases these failures were unexpected and lead to catastrophic consequences. Also, high performance cranes structural design criteria are based on a damage tolerant design philosophy and require careful structural maintenance plan in order to prolong useful structural life of a crane. The paper discusses some aspects in failure analysis of cranes, particulary high-performance ones, gives the background for failure analysis and presents some typical examples of failure. The aim of this article is to encourage practitioners in the failure investigation process to look beyond the metallurgical issues and to also examine the loads and stresses.

Thematic field:
MECHANICS AND DESIGN

Opening paper:
Yes

Date of abstract submission:
28.12.2010.

Number of visits:
1286

Conference:
11th International Conference on Accomplishments in Mechanical and Industrial Engineering

Applied paper from author

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