نتایج جستجو برای: magnetic shape memory effect

تعداد نتایج: 2316473  

پایان نامه :دانشگاه تربیت معلم - تهران - دانشکده مهندسی 1390

ارزیابی ایمنی و قابلیت مطلوب بهره برداری پل ها به عنوان یکی از شریانهای حیاتی پس از وقوع زمین لرزه از اهمیت خاصی برخوردار است. با توجه به قدیمی بودن اکثر پلهای فلزی در کشور و ضعف های اجرایی و طراحی این پلها و همچنین بحرانی بودن این سازه ها برای عملیات امداد و نجات پس از وقوع زمین لرزه، در این پایان نامه کارایی نوع خاصی از میراگرها با آلیاژهای حافظه دار شکلی shape memory alloys به صورت مطالعه مو...

M.J. Mahmoodi, S. Moghbeli

General thermo-mechanical behavior of composites reinforced by shape memory alloy fibers is predicted using a three-dimensional analytical micromechanical method to consider the effect of fibers activation. Composite due to the micromechanical method can be exposed to general normal and shear mechanical and thermal loading which cause to activate the shape memory alloy fibers within polymeric m...

Fatemeh Farhadi, Nahid Hasanzadeh Nematy Sahar Shapurgan

Medical staples are one of the nitinol shape memory alloys applications which their pedicles have to be bent for suitable function with an appropriate angle at a specified temperature .It is achievable by shape memory effect. For this purpose, samples of nitinol super elastic alloys were bent in a steel mold with different angles & formed orthopedic staples. Then shape memory effect was induced...

Journal: :Advanced Engineering Materials 2012

2006
R. Kainuma Y. Imano W. Ito H. Morito Y. Sutou K. Oikawa A. Fujita K. Ishida O. Kitakami T. Kanomata

Shape memory and magnetic properties of a Ni43Co7Mn39Sn11 Heusler polycrystalline alloy were investigated by differential scanning calorimetry, the sample extraction method, and the three-terminal capacitance method. A unique martensitic transformation from the ferromagnetic parent phase to the antiferromagneticlike martensite phase was detected and magnetic-field-induced “reverse” transition w...

2016
Yongkun Wang Wenchao Tian Jiazhao Wang

Magnetically sensitive shape memory poly(styrene-b-butadiene-b-styrene) copolymer (SBS)/liner low density polyethylene (LLDPE) composites filled with various contents of Fe3O4 nanoparticles were prepared. The influence of the Fe3O4 nanoparticles content on the thermal properties, mechanical properties, fracture morphology, magnetic behavior, and shape memory effect of SBS/LLDPE/Fe3O4 composites...

Journal: :Micromachines 2014
Manfred Kohl Marcel Gueltig Viktor Pinneker Ruizhi Yin Frank Wendler Berthold Krevet

By introducing smart materials in micro systems technologies, novel smart microactuators and sensors are currently being developed, e.g., for mobile, wearable, and implantable MEMS (Micro-electro-mechanical-system) devices. Magnetic shape memory alloys (MSMAs) are a promising material system as they show multiple coupling effects as well as large, abrupt changes in their physical properties, e....

2012
Jifeng Wang Huseyin Sehitoglu

Related Articles High cyclic stability of the elastocaloric effect in sputtered TiNiCu shape memory films Appl. Phys. Lett. 101, 091903 (2012) Deformation induced martensite in NiTi and its shape memory effects generated by low temperature laser shock peening J. Appl. Phys. 112, 033515 (2012) Martensitic transformation and magnetic domains in Mn50Ni40Sn10 studied by in-situ transmission electro...

Arman Mohammadi, Daniel George, Mahdi Baniasadi Mostafa Baghani Nima Roudbarian,

In this paper, the effect of thermomechanical loading on the behavior of deflection-based harvested energies from a shape memory polymer system is experimentally investigated. Samples are created with honeycomb cells from poly-lactic acid using additive manufacturing techniques. The shape memory effect in shape recovery and force recovery paths are studied under thermomechanical tests in bendin...

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