Highstrength bolt corrosion fatigue life 
estimate model and its application

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Journal of Dalian Maritime University ›› 2014, Vol. 40 ›› Issue (3) : 12-15.

Highstrength bolt corrosion fatigue life  estimate model and its application

WANG Hui-li^1a,1b, XIA Jian-guang^1b, QIN Si-feng²

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Abstract

Based on the fracture mechanics theory and the GerberichChen formula, the highstrength bolt corrosion fracture crack estimate model and the fatigue life estimate model were established. The highstrength bolt crack depth and the fatigue life under corrosion environment could be quantitatively analyzed. Results show that the highstrength bolt corrosion fracture biggest crack depth reduces along with the material yield strength and the use stress increasing. The material yield strength is the major factor. And the highstrength bolt corrodes fatigue life reduces along with the material strength, the use stress and stress amplitude increasing. The stress amplitude influences most, and the material yield strength influences least.

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high strength bolt / corrosion / fracture / fatigue life / estimate model

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WANG Hui-li,XIA Jian-guang,QIN Si-feng. Highstrength bolt corrosion fatigue life  estimate model and its application[J]. Journal of Dalian Maritime University. 2014, 40(3): 12-15

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