Analysis of causes of casing elevator fracture

Autor:	Qin Changyi, Zhou Jie, Luo Faqian, Li Helin, Lu Shuanlu, Tang Jiping, Chi Jun
Rok vydání:	2007
Předmět:	Engineering Hook Elevator business.industry Fracture load General Engineering Fracture (geology) General Materials Science Geotechnical engineering Structural engineering business Casing
Zdroj:	Engineering Failure Analysis. 14:606-613
ISSN:	1350-6307
DOI:	10.1016/j.engfailanal.2006.03.012
Popis:	A fracture accident occurred with a 244.5 mm–350 ton casing elevator and a traveling hook during casing running down. This paper gives an investigation of this accident, and analyzes the causes based on fracture surface examination and material tests. Some simulation tests are performed in order to validate the fracture mechanism. It is concluded that the casing elevator fracture originated from quenching cracks caused by surface carburization. Calculations of the fracture load acting on the casing elevator showed that the casing elevator broke first, resulting in hook fracture.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::f1cfa9f961bc035a126215b1fb9ce284 https://doi.org/10.1016/j.engfailanal.2006.03.012 Zobrazit plný text záznamu Full Text from ScienceDirect