Experimental investigation on low cycle fatigue and fracture behaviour of a notched Ni-based superalloy at elevated temperature

2014 ◽  
Vol 37 (9) ◽  
pp. 1002-1012 ◽  
Author(s):  
S. H. Yuan ◽  
Y. R. Wang ◽  
D. S. Wei
Keyword(s):  
Experimental Investigation ◽  
Elevated Temperature ◽  
Fracture Behaviour ◽  
Low Cycle Fatigue ◽  
Cycle Fatigue ◽  
Fatigue And Fracture

Low cycle fatigue and fracture behaviour of cast Cu–Pb alloys

1994 ◽  
Vol 10 (7) ◽  
pp. 640-646 ◽  
Author(s):  
T. S. Srivatsan ◽  
S. Anand ◽  
T. S. Sudarshan
Keyword(s):  
Fracture Behaviour ◽  
Low Cycle Fatigue ◽  
Cycle Fatigue ◽  
Fatigue And Fracture

Low cycle fatigue of 2.25Cr1Mo steel with tensile and compressed hold loading at elevated temperature

2016 ◽  
Vol 667 ◽  
pp. 251-260 ◽  
Author(s):  
Junfeng Zhang ◽  
Dunji Yu ◽  
Zizhen Zhao ◽  
Zhe Zhang ◽  
Gang Chen ◽  
...  
Keyword(s):  
Elevated Temperature ◽  
Low Cycle Fatigue ◽  
Cycle Fatigue

Reeled CRA Clad/Lined Pipeline Installation: Seastate Optimisation From Fatigue and Fracture Perspective

2018 ◽  
Author(s):  
Daowu Zhou ◽  
T. Sriskandarajah ◽  
Heidi Bowlby ◽  
Ove Skorpen
Keyword(s):  
Fatigue Crack ◽  
Fatigue Crack Growth ◽  
Crack Growth ◽  
Low Cycle Fatigue ◽  
Superposition Method ◽  
Cycle Fatigue ◽  
Limit States ◽  
Simplified Approach ◽  
Fatigue And Fracture ◽  
Girth Welds

The deformation mechanism in reel-lay of corrosive resistance alloy (CRA) clad/lined pipes can facilitate defect tearing and low cycle fatigue crack growth in the girth welds. Pipe-lay after straightening will subject the CRA welds to high cycle fatigue. The permissible seastate for installation will be governed by failure limit states such as local collapse, wrinkling of the liner, fatigue and fracture. By means of a recently completed offshore project in North Sea, this paper discusses seastate optimisation when installing pipelines with CRA girth welds, from a fatigue and fracture perspective. The additional limiting requirement in CRA welds to maintain CRA liner integrity can lead to significant assessment work since all critical welds shall be examined. AUT scanned defect data were utilised to maximise permissible seastates based on fatigue allowance from a fatigue crack growth calculation. An alternative simplified approach to derive the crack growth based on a superposition method is studied. It enables a straightforward real-time prediction of crack growth and has the potential to be used during the offshore campaign to improve the installation flexibility. Post-installation fracture assessment under more critical seastates is examined for CRA partial over-matching welds. A comparison of CDF between conventional ECA procedure and 3D FE is provided.

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