Analysis Of Pseudoelastic Deformation Cycles Of Gradiently Aged Niti Shape Memory Alloys
Functionally graded NiTi shape memory alloy is a modification of the alloy to have a continuous varying thermomechanical property by expanding the transformation interval such as transformation stress and temperature window. In this study, a functionally graded NiTi wire was created with an optimum...
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| Format: | Monograph |
| Language: | English |
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Universiti Sains Malaysia
2021
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| Online Access: | http://eprints.usm.my/55912/ http://eprints.usm.my/55912/1/Analysis%20Of%20Pseudoelastic%20Deformation%20Cycles%20Of%20Gradiently%20Aged%20Niti%20Shape%20Memory%20Alloys.pdf |
| _version_ | 1848883212897484800 |
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| author | Ishak, Muhammad Hanafi |
| author_facet | Ishak, Muhammad Hanafi |
| author_sort | Ishak, Muhammad Hanafi |
| building | USM Institutional Repository |
| collection | Online Access |
| description | Functionally graded NiTi shape memory alloy is a modification of the alloy to have a continuous varying thermomechanical property by expanding the transformation interval such as transformation stress and temperature window. In this study, a functionally graded NiTi wire was created with an optimum pseudoelastic behaviour through a gradient ageing treatment. Gradient ageing furnace was built to age the wire in a gradient temperature profile. The aged specimens were test with the Differential Scanning Calorimetry (DSC) to observe and analyse the transformation temperature of graded NiTi wire. The pseudoelastic behaviour of the functionally graded NiTi was analysed by conducting tensile test with cyclic load in room temperature. As the result, the gradient aged specimen exhibited forward and reverse stress gradient of 1.42GPa and 2.52GPa respectively with residual strain of 2.7%. For the cyclic deformation, reduction in the forward and reverse transformation stress was observed. Plateau and residual strain were affected from the cyclic loading deformation. Residual strain tends to stabilize asymptotically in the later cycles compared to the earlier one. Thus, make the graded NiTi have a good psuedoelastic behaviour upon cyclic deformation compared to the original wire and isothermal aged wire. |
| first_indexed | 2025-11-15T18:47:14Z |
| format | Monograph |
| id | usm-55912 |
| institution | Universiti Sains Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T18:47:14Z |
| publishDate | 2021 |
| publisher | Universiti Sains Malaysia |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | usm-559122022-12-06T04:05:02Z http://eprints.usm.my/55912/ Analysis Of Pseudoelastic Deformation Cycles Of Gradiently Aged Niti Shape Memory Alloys Ishak, Muhammad Hanafi T Technology TJ1-1570 Mechanical engineering and machinery Functionally graded NiTi shape memory alloy is a modification of the alloy to have a continuous varying thermomechanical property by expanding the transformation interval such as transformation stress and temperature window. In this study, a functionally graded NiTi wire was created with an optimum pseudoelastic behaviour through a gradient ageing treatment. Gradient ageing furnace was built to age the wire in a gradient temperature profile. The aged specimens were test with the Differential Scanning Calorimetry (DSC) to observe and analyse the transformation temperature of graded NiTi wire. The pseudoelastic behaviour of the functionally graded NiTi was analysed by conducting tensile test with cyclic load in room temperature. As the result, the gradient aged specimen exhibited forward and reverse stress gradient of 1.42GPa and 2.52GPa respectively with residual strain of 2.7%. For the cyclic deformation, reduction in the forward and reverse transformation stress was observed. Plateau and residual strain were affected from the cyclic loading deformation. Residual strain tends to stabilize asymptotically in the later cycles compared to the earlier one. Thus, make the graded NiTi have a good psuedoelastic behaviour upon cyclic deformation compared to the original wire and isothermal aged wire. Universiti Sains Malaysia 2021-08-01 Monograph NonPeerReviewed application/pdf en http://eprints.usm.my/55912/1/Analysis%20Of%20Pseudoelastic%20Deformation%20Cycles%20Of%20Gradiently%20Aged%20Niti%20Shape%20Memory%20Alloys.pdf Ishak, Muhammad Hanafi (2021) Analysis Of Pseudoelastic Deformation Cycles Of Gradiently Aged Niti Shape Memory Alloys. Project Report. Universiti Sains Malaysia, Pusat Pengajian Kejuruteraan Mekanik. (Submitted) |
| spellingShingle | T Technology TJ1-1570 Mechanical engineering and machinery Ishak, Muhammad Hanafi Analysis Of Pseudoelastic Deformation Cycles Of Gradiently Aged Niti Shape Memory Alloys |
| title | Analysis Of Pseudoelastic Deformation Cycles Of Gradiently Aged Niti Shape Memory Alloys |
| title_full | Analysis Of Pseudoelastic Deformation Cycles Of Gradiently Aged Niti Shape Memory Alloys |
| title_fullStr | Analysis Of Pseudoelastic Deformation Cycles Of Gradiently Aged Niti Shape Memory Alloys |
| title_full_unstemmed | Analysis Of Pseudoelastic Deformation Cycles Of Gradiently Aged Niti Shape Memory Alloys |
| title_short | Analysis Of Pseudoelastic Deformation Cycles Of Gradiently Aged Niti Shape Memory Alloys |
| title_sort | analysis of pseudoelastic deformation cycles of gradiently aged niti shape memory alloys |
| topic | T Technology TJ1-1570 Mechanical engineering and machinery |
| url | http://eprints.usm.my/55912/ http://eprints.usm.my/55912/1/Analysis%20Of%20Pseudoelastic%20Deformation%20Cycles%20Of%20Gradiently%20Aged%20Niti%20Shape%20Memory%20Alloys.pdf |