Details
| Original language | English |
|---|---|
| Pages (from-to) | 1019-1029 |
| Number of pages | 11 |
| Journal | Journal of engineering mechanics |
| Volume | 133 |
| Issue number | 9 |
| Publication status | Published - Sept 2007 |
| Externally published | Yes |
Abstract
This paper continues to address the overarching goal to provide a more unified understanding of NiTi shape memory alloys intended for use in structural applications by attempting to link standard processing practice and basic materials characterization to the deformation behavior of large diameter bars. Results from cyclic tensile tests performed on large diameter Ni-rich polycrystalline NiTi bars are presented. Coupon specimens taken from deformation processed bars with diameters of 12.7, 19.1, and 31.8mm are tested along with their respective full-scale specimens. The coupon tests results reveal small and highly variable differences between specimens taken from the different size bars. The full-scale specimen tests continue to show the presence of the R phase, but lack a Lüders-like transformation. A comparison of the results suggests that coupon specimens provide only limited information in terms of the full-scale behavior. Full-scale tests using an earthquake-type loading then show similar behavior to the tensile cyclic tests suggesting the ability to use NiTi in structural applications. Overall, this paper and Tyber 2007 provide a multiscale analysis of NiTi shape memory alloys to be used by both material scientist and civil engineers in the development of applications for NiTi.
Keywords
- Cyclic tests, Earthquake engineering, Material properties, Material tests, Mechanical properties, Shape memory effect, Structures
ASJC Scopus subject areas
- Engineering(all)
- Mechanics of Materials
- Engineering(all)
- Mechanical Engineering
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In: Journal of engineering mechanics, Vol. 133, No. 9, 09.2007, p. 1019-1029.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Structural engineering with NiTi. II
T2 - Mechanical behavior and scaling
AU - McCormick, Jason
AU - Tyber, Jeff
AU - DesRoches, Reginald
AU - Gall, Ken
AU - Maier, Hans J.
PY - 2007/9
Y1 - 2007/9
N2 - This paper continues to address the overarching goal to provide a more unified understanding of NiTi shape memory alloys intended for use in structural applications by attempting to link standard processing practice and basic materials characterization to the deformation behavior of large diameter bars. Results from cyclic tensile tests performed on large diameter Ni-rich polycrystalline NiTi bars are presented. Coupon specimens taken from deformation processed bars with diameters of 12.7, 19.1, and 31.8mm are tested along with their respective full-scale specimens. The coupon tests results reveal small and highly variable differences between specimens taken from the different size bars. The full-scale specimen tests continue to show the presence of the R phase, but lack a Lüders-like transformation. A comparison of the results suggests that coupon specimens provide only limited information in terms of the full-scale behavior. Full-scale tests using an earthquake-type loading then show similar behavior to the tensile cyclic tests suggesting the ability to use NiTi in structural applications. Overall, this paper and Tyber 2007 provide a multiscale analysis of NiTi shape memory alloys to be used by both material scientist and civil engineers in the development of applications for NiTi.
AB - This paper continues to address the overarching goal to provide a more unified understanding of NiTi shape memory alloys intended for use in structural applications by attempting to link standard processing practice and basic materials characterization to the deformation behavior of large diameter bars. Results from cyclic tensile tests performed on large diameter Ni-rich polycrystalline NiTi bars are presented. Coupon specimens taken from deformation processed bars with diameters of 12.7, 19.1, and 31.8mm are tested along with their respective full-scale specimens. The coupon tests results reveal small and highly variable differences between specimens taken from the different size bars. The full-scale specimen tests continue to show the presence of the R phase, but lack a Lüders-like transformation. A comparison of the results suggests that coupon specimens provide only limited information in terms of the full-scale behavior. Full-scale tests using an earthquake-type loading then show similar behavior to the tensile cyclic tests suggesting the ability to use NiTi in structural applications. Overall, this paper and Tyber 2007 provide a multiscale analysis of NiTi shape memory alloys to be used by both material scientist and civil engineers in the development of applications for NiTi.
KW - Cyclic tests
KW - Earthquake engineering
KW - Material properties
KW - Material tests
KW - Mechanical properties
KW - Shape memory effect
KW - Structures
UR - http://www.scopus.com/inward/record.url?scp=34548173722&partnerID=8YFLogxK
U2 - 10.1061/(ASCE)0733-9399(2007)133:9(1019)
DO - 10.1061/(ASCE)0733-9399(2007)133:9(1019)
M3 - Article
AN - SCOPUS:34548173722
VL - 133
SP - 1019
EP - 1029
JO - Journal of engineering mechanics
JF - Journal of engineering mechanics
SN - 0733-9399
IS - 9
ER -