Designing better cardiovascular stent materials: A learning curve

I Cockerill, CW See, ML Young… - Advanced functional …, 2021 - Wiley Online Library
Cardiovascular stents are life‐saving devices and one of the top ten medical breakthroughs
of the 21st century. Decades of research and clinical trials have taught us about the effects of …

Advances in enhancing structural and functional fatigue resistance of superelastic NiTi shape memory alloy: A Review

K Nargatti, S Ahankari - Journal of Intelligent Material …, 2022 - journals.sagepub.com
Nitinol (NiTi), a shape memory alloy (SMA) of nickel and titanium, exhibits two unique
properties: the shape memory effect and superelasticity. It is a material of choice for …

Roboticizing fabric by integrating functional fibers

TL Buckner, RA Bilodeau, SY Kim… - Proceedings of the …, 2020 - National Acad Sciences
Fabrics are ubiquitous materials that have conventionally been passive assemblies of
interlacing, inactive fibers. However, the recent emergence of active fibers with actuation …

Combined effects of grain size and training on fatigue resistance of nanocrystalline NiTi shape memory alloy wires

P Chen, X Cai, Y Liu, Z Wang, M Jin, X Jin - International Journal of Fatigue, 2023 - Elsevier
The structural fatigue life of nanocrystalline NiTi wires with grain size ranging from 53 nm to
125 nm was improved by stress-controlled mechanical training and the percentage of the …

Investigation on fatigue behaviors of NiTi polycrystalline strips under stress-controlled tension via in-situ macro-band observation

L Zheng, Y He, Z Moumni - International Journal of Plasticity, 2017 - Elsevier
One of the challenging issues in studying the fatigue behaviors of NiTi shape memory alloy
is the interaction between the material damage and material's martensitic phase …

Multiscale TRIP-based investigation of low-cycle fatigue of polycrystalline NiTi shape memory alloys

Y Zhang, Z Moumni, Y You, W Zhang, J Zhu… - International Journal of …, 2019 - Elsevier
In this paper, a multiscale investigation of fatigue crack initiation in shape memory alloys
(SMAs) based on Transformation Induced Plasticity (TRIP) is presented. A mechanism for …

Rotary bend fatigue of nitinol to one billion cycles

JD Weaver, GM Sena, KI Aycock, A Roiko… - Shape Memory and …, 2023 - Springer
Nitinol implants, especially those used in cardiovascular applications, are typically expected
to remain durable beyond 108 cycles, yet literature on ultra-high cycle fatigue of nitinol …

Fatigue of shape memory alloys with emphasis on additively manufactured NiTi components

A Cebrian Carcavilla, W Zaki - Applied …, 2022 - asmedigitalcollection.asme.org
Shape memory alloys (SMAs) are often used in applications involving time-varying loads.
Under such conditions, fatigue leading to possible fracture is a paramount cause of failure …

Pre-strain and mean strain effects on the fatigue behavior of superelastic nitinol medical devices

AR Pelton, BT Berg, P Saffari, AP Stebner… - Shape Memory and …, 2022 - Springer
There is a growing body of evidence that “in situ” modification of the microstructure of Nitinol
due to pre-strain and mean strain strongly influence the fatigue properties of implanted …

[HTML][HTML] The influence of mean strain on the high-cycle fatigue of Nitinol with application to medical devices

H Cao, MH Wu, F Zhou, RM McMeeking… - Journal of the Mechanics …, 2020 - Elsevier
One of the contentious issues associated with the high-cycle fatigue of Nitinol, a nominally
equiatomic alloy of nickel and titanium, is the claim that increasing the applied mean strain …