Dynamic Behaviors of Ferromagnetic Shape Memory Alloys
Author | : Oana-Zenaida Pascan |
Publisher | : |
Total Pages | : 173 |
Release | : 2015 |
Genre | : |
ISBN | : |
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Author | : Oana-Zenaida Pascan |
Publisher | : |
Total Pages | : 173 |
Release | : 2015 |
Genre | : |
ISBN | : |
Author | : Xue Chen |
Publisher | : |
Total Pages | : 190 |
Release | : 2013 |
Genre | : |
ISBN | : |
Author | : Albert C J Luo |
Publisher | : World Scientific |
Total Pages | : 556 |
Release | : 2006-12-09 |
Genre | : Science |
ISBN | : 9814476331 |
This volume provides useful tools in Lie group analysis to solve nonlinear partial differential equations. Many of important issues in nonlinear wave dynamics and nonlinear fluid mechanics are presented: Homotopy techniques are used to obtain analytical solutions; fundamental problems and theories in classic and quantum dynamical systems are discussed; and numerous interesting results about dynamics and vibration in sensor and smart systems are presented. Interval computation and nonlinear modeling in dynamics and control are also briefly included.
Author | : Christian Mennerich |
Publisher | : KIT Scientific Publishing |
Total Pages | : 284 |
Release | : 2014-05-13 |
Genre | : Science |
ISBN | : 3731500094 |
The phase-field method is a powerful tool in computer-aided materials science as it allows for the analysis of the time-spatial evolution of microstructures on the mesoscale. A multi-phase-field model is adopted to run numerical simulations in two different areas of scientific interest: Polycrystalline thin films growth and the ferromagnetic shape memory effect. FFT-techniques, norm conservative integration and RVE-methods are necessary to make the coupled problems numerically feasible.
Author | : Lluis Manosa |
Publisher | : Trans Tech Publications Ltd |
Total Pages | : 250 |
Release | : 2008-06-19 |
Genre | : Technology & Engineering |
ISBN | : 3038132144 |
Volume is indexed by Thomson Reuters CPCI-S (WoS). Multiferroic shape-memory alloys that exhibit both ferroelastic and ferromagnetic properties have recently attracted much attention. They belong to the family of so-called smart materials and are future-generation materials that are likely to be useful in cutting-edge technologies. Apart from the theoretical challenge of understanding their fascinating properties, the quest to harness them for practical use is also attracting many scientists and engineers from all over the world.
Author | : Neelesh Nandkumar Sarawate |
Publisher | : |
Total Pages | : |
Release | : 2008 |
Genre | : Ferromagnetic materials |
ISBN | : |
Abstract: Ferromagnetic Shape Memory Alloys (FSMAs) in the Ni-Mn-Ga system are a recent class of active materials that can generate magnetic field induced strains of 10% by twin-variant rearrangement. This work details an extensive analytical and experimental investigation of commercial single-crystal Ni-Mn-Ga under quasi-static and dynamic conditions with a view to exploring the material's sensing and actuation applications. The sensing effect of Ni-Mn-Ga is experimentally characterized by measuring the flux density and stress as a function of quasi-static strain loading at various fixed magnetic fields. The bias field is shown to mark the transition from irreversible to reversible (pseudoelastic) stress-strain behavior. A constitutive model based on continuum thermodynamics is developed to describe the coupled magnetomechanical behavior of Ni-Mn-Ga. Mechanical dissipation and the microstructure of Ni-Mn-Ga are incorporated through internal state variables. The constitutive response of the material is obtained by restricting the process through the second law of thermodynamics. The model is further modified to describe the actuation and blocked-force behavior under a unified framework.
Author | : |
Publisher | : |
Total Pages | : 0 |
Release | : 2002 |
Genre | : |
ISBN | : |
Two methods for producing porous NiTi shape memory alloy (SMA) were used in this work: conventional sintering and sintering at elevated pressure using a Hot Isostatic Press. Depending on various parameters such as sintering times and temperatures, as well as initial powder size and compaction, porous specimens have been produced with varying average pore sizes. The phase transformation temperatures of the porous NiTi specimens were determined using a Differential Scanning Calorimeter, while their microstructure and phase compositions were analyzed using X-Ray Diffraction and a Scanning Electron Microscope aided with Electron-Probe Micro Analysis. Quasi-static and dynamic tests under compression were carried out on various porous NiTi samples to evaluate the pseudo-elasticity and the martensitic detwinning behavior. The effective response of the porous SMAs was modeled using micromechanical averaging techniques. The current work establishes a macroscopic constitutive model for the porous SMA material using the properties of the dense SMA and information about pore shape, volume fraction as well as given pore orientation. A constitutive model for the SMA matrix, which is capable of accounting for the development of plastic strains, was developed as part of the modeling effort. The results from the numerical simulations were compared with the experimental data.
Author | : Volodymyr A. Chernenko |
Publisher | : Trans Tech Publications Ltd |
Total Pages | : 222 |
Release | : 2009-12-03 |
Genre | : Technology & Engineering |
ISBN | : 3038133418 |
Volume is indexed by Thomson Reuters CPCI-S (WoS). This work on Ferromagnetic Shape Memory Alloys contains selected peer-reviewed papers. Such materials belong to the most exciting and fastest-growing group of martensitic multifunctional materials. The selected papers cover the following topics of: Basic phenomena and theory; Structure and magnetic properties; Magnetomechanics and magnetocaloric effect; Thin films and composites; Modeling and simulations and Processing and engineering.
Author | : Takuo Sakon |
Publisher | : MDPI |
Total Pages | : 193 |
Release | : 2018-03-15 |
Genre | : Science |
ISBN | : 303842773X |
This book is a printed edition of the Special Issue Shape Memory Alloys 2017" that was published in Metals
Author | : Volodymyr A. Chernenko |
Publisher | : Trans Tech Publications Ltd |
Total Pages | : 242 |
Release | : 2011-05-17 |
Genre | : Technology & Engineering |
ISBN | : 3038134678 |
Special topic volume with invited peer reviewed papers only.