Multiaxial Loading And In Situ Synchrotron X-Ray of a NiTi Shape Memory Alloy for Biomedical Applications

V. Imbeni; T.W. Duerig; A. Pelton; R.O. Ritchie

Multiaxial Loading And In Situ Synchrotron X-Ray of a NiTi Shape Memory Alloy for Biomedical Applications

V. Imbeni, T.W. Duerig, A. Pelton, R.O. Ritchie

Research output: Chapters, Conference Papers, Creative and Literary Works › RGC 32 - Refereed conference paper (with host publication) › peer-review

Abstract

Although the use of Nitinol in the biomedical industry has been very successful, there have been distinct problems due to the difficulty of being able to accurately compute stresses, particularly in the presence of complex in vivo loading. Constitutive laws for shape-memory alloys subjected to multiaxial loading, which are based on direct experimental observations, are generally not available in the literature. Accordingly, tension-torsion tests are conducted on Nitinol thin-walled tubes (thickness/radius ratio of 1:10) using various loading/unloading paths under isothermal conditions. The experimental results showed significant variations in the mechanical response along the two loading axes.

To fully understand the macroscopic and microscopic aspects of the transformation in situ multiaxial (tension-torsion) loading experiments were also performed at the SSRL (Stanford Synchrothron Radiation Laboratory) in order to monitor the material's state of transformation and identifying the nature, volume fraction of phases present and the elastic strain in them as a function of stress and stress state.

Original language	English
Title of host publication	Medical Device Materials
Subtitle of host publication	Proceedings from the Materials and Processes for Medical Devices Conference 2003
Editors	Sanjay Shrivastava
Place of Publication	Materials Park, OH
Publisher	ASM International
Pages	209-214
ISBN (Print)	0871707985
Publication status	Published - Sept 2003
Externally published	Yes
Event	Materials & Processes for Medical Devices Conference 2003 - Anaheim, United States Duration: 8 Sept 2003 → 10 Sept 2003

Publication series

Name	Medical Device Materials - Proceedings of the Materials and Processes for Medical Devices Conference

Conference

Conference	Materials & Processes for Medical Devices Conference 2003
Country/Territory	United States
City	Anaheim
Period	8/09/03 → 10/09/03

Other Access Options

Check CityUHK Library

Permanent Link

Right click to copy link

Cite this

Imbeni, V., Duerig, T. W., Pelton, A., & Ritchie, R. O. (2003). Multiaxial Loading And In Situ Synchrotron X-Ray of a NiTi Shape Memory Alloy for Biomedical Applications. In S. Shrivastava (Ed.), Medical Device Materials: Proceedings from the Materials and Processes for Medical Devices Conference 2003 (pp. 209-214). (Medical Device Materials - Proceedings of the Materials and Processes for Medical Devices Conference). ASM International.

Imbeni, V. ; Duerig, T.W. ; Pelton, A. et al. / Multiaxial Loading And In Situ Synchrotron X-Ray of a NiTi Shape Memory Alloy for Biomedical Applications. Medical Device Materials: Proceedings from the Materials and Processes for Medical Devices Conference 2003. editor / Sanjay Shrivastava. Materials Park, OH : ASM International, 2003. pp. 209-214 (Medical Device Materials - Proceedings of the Materials and Processes for Medical Devices Conference).

@inproceedings{08a1af8b679f4fd590caee308795d7f5,

title = "Multiaxial Loading And In Situ Synchrotron X-Ray of a NiTi Shape Memory Alloy for Biomedical Applications",

abstract = "Although the use of Nitinol in the biomedical industry has been very successful, there have been distinct problems due to the difficulty of being able to accurately compute stresses, particularly in the presence of complex in vivo loading. Constitutive laws for shape-memory alloys subjected to multiaxial loading, which are based on direct experimental observations, are generally not available in the literature. Accordingly, tension-torsion tests are conducted on Nitinol thin-walled tubes (thickness/radius ratio of 1:10) using various loading/unloading paths under isothermal conditions. The experimental results showed significant variations in the mechanical response along the two loading axes. To fully understand the macroscopic and microscopic aspects of the transformation in situ multiaxial (tension-torsion) loading experiments were also performed at the SSRL (Stanford Synchrothron Radiation Laboratory) in order to monitor the material's state of transformation and identifying the nature, volume fraction of phases present and the elastic strain in them as a function of stress and stress state.",

author = "V. Imbeni and T.W. Duerig and A. Pelton and R.O. Ritchie",

year = "2003",

month = sep,

language = "English",

isbn = "0871707985",

series = "Medical Device Materials - Proceedings of the Materials and Processes for Medical Devices Conference",

publisher = "ASM International",

pages = "209--214",

editor = "Sanjay Shrivastava",

booktitle = "Medical Device Materials",

address = "United States",

note = "Materials & Processes for Medical Devices Conference 2003 ; Conference date: 08-09-2003 Through 10-09-2003",

}

Imbeni, V, Duerig, TW, Pelton, A & Ritchie, RO 2003, Multiaxial Loading And In Situ Synchrotron X-Ray of a NiTi Shape Memory Alloy for Biomedical Applications. in S Shrivastava (ed.), Medical Device Materials: Proceedings from the Materials and Processes for Medical Devices Conference 2003. Medical Device Materials - Proceedings of the Materials and Processes for Medical Devices Conference, ASM International, Materials Park, OH, pp. 209-214, Materials & Processes for Medical Devices Conference 2003, Anaheim, California, United States, 8/09/03.

Multiaxial Loading And In Situ Synchrotron X-Ray of a NiTi Shape Memory Alloy for Biomedical Applications. / Imbeni, V.; Duerig, T.W.; Pelton, A. et al.
Medical Device Materials: Proceedings from the Materials and Processes for Medical Devices Conference 2003. ed. / Sanjay Shrivastava. Materials Park, OH: ASM International, 2003. p. 209-214 (Medical Device Materials - Proceedings of the Materials and Processes for Medical Devices Conference).

Research output: Chapters, Conference Papers, Creative and Literary Works › RGC 32 - Refereed conference paper (with host publication) › peer-review

TY - GEN

T1 - Multiaxial Loading And In Situ Synchrotron X-Ray of a NiTi Shape Memory Alloy for Biomedical Applications

AU - Imbeni, V.

AU - Duerig, T.W.

AU - Pelton, A.

AU - Ritchie, R.O.

PY - 2003/9

Y1 - 2003/9

N2 - Although the use of Nitinol in the biomedical industry has been very successful, there have been distinct problems due to the difficulty of being able to accurately compute stresses, particularly in the presence of complex in vivo loading. Constitutive laws for shape-memory alloys subjected to multiaxial loading, which are based on direct experimental observations, are generally not available in the literature. Accordingly, tension-torsion tests are conducted on Nitinol thin-walled tubes (thickness/radius ratio of 1:10) using various loading/unloading paths under isothermal conditions. The experimental results showed significant variations in the mechanical response along the two loading axes. To fully understand the macroscopic and microscopic aspects of the transformation in situ multiaxial (tension-torsion) loading experiments were also performed at the SSRL (Stanford Synchrothron Radiation Laboratory) in order to monitor the material's state of transformation and identifying the nature, volume fraction of phases present and the elastic strain in them as a function of stress and stress state.

AB - Although the use of Nitinol in the biomedical industry has been very successful, there have been distinct problems due to the difficulty of being able to accurately compute stresses, particularly in the presence of complex in vivo loading. Constitutive laws for shape-memory alloys subjected to multiaxial loading, which are based on direct experimental observations, are generally not available in the literature. Accordingly, tension-torsion tests are conducted on Nitinol thin-walled tubes (thickness/radius ratio of 1:10) using various loading/unloading paths under isothermal conditions. The experimental results showed significant variations in the mechanical response along the two loading axes. To fully understand the macroscopic and microscopic aspects of the transformation in situ multiaxial (tension-torsion) loading experiments were also performed at the SSRL (Stanford Synchrothron Radiation Laboratory) in order to monitor the material's state of transformation and identifying the nature, volume fraction of phases present and the elastic strain in them as a function of stress and stress state.

UR - http://www.scopus.com/inward/record.url?scp=2642549110&partnerID=8YFLogxK

UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-2642549110&origin=recordpage

M3 - RGC 32 - Refereed conference paper (with host publication)

SN - 0871707985

T3 - Medical Device Materials - Proceedings of the Materials and Processes for Medical Devices Conference

SP - 209

EP - 214

BT - Medical Device Materials

A2 - Shrivastava, Sanjay

PB - ASM International

CY - Materials Park, OH

T2 - Materials & Processes for Medical Devices Conference 2003

Y2 - 8 September 2003 through 10 September 2003

ER -

Imbeni V, Duerig TW, Pelton A, Ritchie RO. Multiaxial Loading And In Situ Synchrotron X-Ray of a NiTi Shape Memory Alloy for Biomedical Applications. In Shrivastava S, editor, Medical Device Materials: Proceedings from the Materials and Processes for Medical Devices Conference 2003. Materials Park, OH: ASM International. 2003. p. 209-214. (Medical Device Materials - Proceedings of the Materials and Processes for Medical Devices Conference).

Multiaxial Loading And In Situ Synchrotron X-Ray of a NiTi Shape Memory Alloy for Biomedical Applications

Abstract

Publication series

Conference

Other Access Options

Permanent Link

Other Files and Links

Fingerprint

Cite this