Results 161 to 170 of about 28,445 (214)
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Journal of Applied Physics, 1987
A self-consistent macroscopic thermodynamics is developed for the calculation of work, heat, and dissipation for thermodynamic paths of the shape memory alloy, Nitinol. The thermodynamic system analyzed is a Nitinol helix for which extensive force–length–temperature (FLT) equation of state measurements have been made.
J. L. McNichols, J. S. Cory
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A self-consistent macroscopic thermodynamics is developed for the calculation of work, heat, and dissipation for thermodynamic paths of the shape memory alloy, Nitinol. The thermodynamic system analyzed is a Nitinol helix for which extensive force–length–temperature (FLT) equation of state measurements have been made.
J. L. McNichols, J. S. Cory
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Bending characteristics of nitinol wire
American Journal of Orthodontics, 1979U ntil recently only a limited group of alloys have been used for orthodontic wires, namely, gold-caper, austenitic stainless steel, and chromium-cobalt-nickle (CrCo-Ni) based materials. In general, the last two groups have similar mechanical properties although processing, stress-relieving, heat-treating, and minor alloying adjustments allow for small
I, Lopez, J, Goldberg, C J, Burstone
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Chemical etching of Nitinol stents
Acta of bioengineering and biomechanics, 2013Acta of Bioengineering and Biomechanics; 04/2013; ISSN 1509 ...
Katona, Bálint +4 more
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Nitinol in Magnetic Resonance Imaging
Minimally Invasive Therapy & Allied Technologies, 2004Surgical and interventional instruments as well as implants can cause significant magnetic resonance image (MRI) artifacts. The artifacts can be used to visualize instruments, cannulae, guide wires, catheters during interventional MRI and Nitinol devices have proven to be useful for MRI procedures. Diagnostic imaging is often compromised in the area of
, Melzer +4 more
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Journal of Failure Analysis and Prevention, 2021
Abstract Nitinol fatigue fracture surfaces generally exhibit similar features to most engineering alloys, including a flat fracture plane, ratchet marks, radial lines, beachmarks, and striations.
Louis G. Malito +4 more
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Abstract Nitinol fatigue fracture surfaces generally exhibit similar features to most engineering alloys, including a flat fracture plane, ratchet marks, radial lines, beachmarks, and striations.
Louis G. Malito +4 more
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JOM, 1987
Straining annealed Nitinol (TiNi) wire changes the characteristics of its subsequent phase transformation. It generates peaks in electrical resistance and an additional peak in the calorimetry curve. This work explores the relationship between the stress associated with this strain and the peaks formed during transformation.
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Straining annealed Nitinol (TiNi) wire changes the characteristics of its subsequent phase transformation. It generates peaks in electrical resistance and an additional peak in the calorimetry curve. This work explores the relationship between the stress associated with this strain and the peaks formed during transformation.
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Minimally Invasive Therapy & Allied Technologies, 2000
This review links together recent information on the biocompatibility of Nitinol. Fundamental aspects of biological responses to Nitinol and its alloy components are clarified. The clinical advantages of using this functional biomaterial are evident. Although most studies support the good biocompatibility of Nitinol, there are still a lot of unanswered
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This review links together recent information on the biocompatibility of Nitinol. Fundamental aspects of biological responses to Nitinol and its alloy components are clarified. The clinical advantages of using this functional biomaterial are evident. Although most studies support the good biocompatibility of Nitinol, there are still a lot of unanswered
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Enhanced Nitinol Properties for Biomedical Applications
Recent Patents on Biomedical Engineeringe, 2008In recent years, Nitinol producers and medical products have experienced an exponential growth, driven by advanced manufacturing techniques and the use of progressively less invasive medical procedures. Concurrently, new processing techniques have been developed to further enhance the valuable properties of Nitinol used in medical devices; recent ...
BISCARINI, Andrea +2 more
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Metallographic method for nitinol
Metallography, 1985Abstract It is demonstrated that for the alloy Ni-Ti, mechanical polishing followed by electrolytic polishing using a jet polisher such as the Struers Tenupol produces areas suitable for microscopical examination of the structure with polarized light illumination.
L.A. Middleton, N.F. Kennon, D.P. Dunne
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Nitinol Stents in Hemodialysis Access
Journal of Vascular and Interventional Radiology, 2004MAINTAINING permanent vascular access remains the Achilles heel of hemodialysis. In the era of widespread use of percutaneous angioplasty and thrombectomy for salvaging failing and failed hemodialysis accesses, the consensus guidelines of the National Kidney Foundation Dialysis Outcomes Quality Initiative recommend relatively modest benchmarks: a 50% 6-
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