Journal ArticleDOI
In vitro fatigue–crack growth and fracture toughness behavior of thin-walled superelastic Nitinol tube for endovascular stents: A basis for defining the effect of crack-like defects
TLDR
Fatigue-crack growth behavior and fracture toughness properties are characterized in thin-section Nitinol and show marked crack-resistance (R-curve) behavior with a dependence on crack-growth angle (with respect to the tube drawing axis); additionally, measured toughnesses are found to be lower than has been previously reported for bulkNitinol.About:
This article is published in Biomaterials.The article was published on 2007-02-01. It has received 146 citations till now. The article focuses on the topics: Paris' law & Fracture toughness.read more
Citations
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Journal ArticleDOI
Fatigue and durability of Nitinol stents
TL;DR: The results demonstrate the non-linear constant fatigue-life response of Nitinol stents, whereby, contrary to conventional engineering materials, the fatigue life ofNitinol is observed to increase with increasing mean strain.
Journal ArticleDOI
Mechanical fatigue and fracture of Nitinol
TL;DR: In this article, the authors review the existing knowledge base on the fatigue of Nitinol, both in terms of their stress or strain life (total life) and damage tolerant (crack propagation) behaviour, together with their fracture toughness properties.
Journal ArticleDOI
Evolution of crack-tip transformation zones in superelastic Nitinol subjected to in situ fatigue: A fracture mechanics and synchrotron X-ray microdiffraction analysis
TL;DR: In this paper, the authors used synchrotron X-ray microdiffraction with fracture mechanics techniques to directly measure in situ three-dimensional strains, phases and crystallographic alignment ahead of a growing fatigue crack (100 cycles in situ ) in superelastic Nitinol.
Journal ArticleDOI
Fracture mechanics and microstructure in NiTi shape memory alloys
S. Gollerthan,Marcus L. Young,Alberto Baruj,Jan Frenzel,Wolfgang W. Schmahl,Wolfgang W. Schmahl,Gunther Eggeler +6 more
TL;DR: In this article, cracks propagate at similar stress intensities of 30 ± 5 MPa m into martensite and pseudoelastic austenite in both materials, and a miniature CT specimen was developed, which yields reliable critical fracture mechanics parameters.
Journal ArticleDOI
Fatigue of Nitinol: The state-of-the-art and ongoing challenges.
TL;DR: A review of the present state of the art on the fatigue behavior of superelastic Nitinol is presented and several conclusions are made and recommendations for future works are offered.
References
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BookDOI
Fracture Mechanics : Fundamentals and Applications
TL;DR: Fracture Mechanics: Fundamentals and Applications, Fourth Edition as discussed by the authors is the most useful and comprehensive guide to fracture mechanics available It has been adopted by more than 150 universities worldwide and used by thousands of engineers and researchers.
Journal ArticleDOI
Mechanisms of fatigue-crack propagation in ductile and brittle solids
TL;DR: In this article, the authors examined the mechanisms of fatigue-crack propagation with particular emphasis on the similarities and differences between cyclic crack growth in ductile materials such as metals, and corresponding behavior in brittle materials, such as intermetallics and ceramics.
Related Papers (5)
Evolution of crack-tip transformation zones in superelastic Nitinol subjected to in situ fatigue: A fracture mechanics and synchrotron X-ray microdiffraction analysis
Fatigue-crack growth behavior in the superelastic and shape-memory alloy nitinol
A. L. McKelvey,Robert O. Ritchie +1 more