نتایج جستجو برای: shape memory alloy

تعداد نتایج: 487047  

Journal: :روش های عددی در مهندسی (استقلال) 0
سید خطیب السلام صدر نژاد و حمید احمدیان k. sadrnezhaad and h. ahmadian

in this research a cu-zn-al alloy is produced by melting the raw materials in an electric resistance furnace and then pouring it into a steel mould. the optimum way to achieve the final analysis in the hypo-eutectoid range is determined and the influence of the alloying element, ti on the grain size and the shape memory properties of the samples are investigated. solution treatment (done at 850...

Journal: :J. Aerospace Inf. Sys. 2013
Kenton Conrad Kirkpatrick John Valasek Chris Haag

Hysteretic dynamical systems are challenging to control due to their hard nonlinearity and difficulty in modeling. One type of systemwith hysteretic dynamics that is gaining use in aerospace systems is the shape-memory alloy-based actuator. These actuators provide aircraft and spacecraft systems with the ability to achieve component-level or vehicle-level geometry or shape changes. Characteriza...

Journal: :نشریه مهندسی عمران و نقشه برداری 0
مهدی قاسمیه دانشگاه تهران سیداردوان مطهری دانشگاه تهران

0

2012
Kohei Takeda Hisaaki Tobushi Elzbieta A. Pieczyska

If the shape memory alloy is subjected to the subloop loading under the stress-controlled condition, creep and creep recovery can appear based on the martensitic transformation. In the design of shape memory alloy elements, these deformation properties are important since the deflection of shape memory alloy elements can change under constant stress. The conditions for the progress of the marte...

This paper presents an experimental investigation into the compression behavior of shape memory alloy hybrid composites (SMAHC) subjected to quasi-static loading taking into account of rotation effects of shape memory wire in basalt continuous filament (BCF) direct roving epoxy composite. Two types of specimen prepared, the BCF direct roving reinforced epoxy composite filled with shape memory w...

Journal: :SSRN Electronic Journal 2020

Journal: :MATERIALS TRANSACTIONS 2002

Journal: :iranian journal of mechanical engineering transactions of the isme 0
m. shariyat k.n. toosi university of technology a. niknami k.n. toosi university of technology

impact responses of rectangular composite plates with embedded shape memory alloy (sma) wires are investigated in the present research. the plate is assumed to be placed in a thermal environment; so that in contrast to the available researches in the field, the shape memory and ferroelasticity effects have to be considered also in addition to the superelasticity. the governing equations are der...

Marvelous bending/straightening effects of two-way shape memory alloy (TWSMA) help their employment in design and manufacturing of new medical appliances. Constrained ageing with bending load scheme can induce two-way shape memory effect (TWSME). Scanning electron microscope (SEM) analysis, electrical resistivity measurement (ERM) and differential scanning calorimetry (DSC) are employed to dete...

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