Simultaneous detection of acoustic emission and Barkhausen noise during the martensitic transition of a Ni-Mn-Ga magnetic shape-memory alloy

2013 ◽  
Vol 88 (17) ◽  
Author(s):  
Jordi Baró ◽  
Steve Dixon ◽  
Rachel S. Edwards ◽  
Yichao Fan ◽  
Dean S. Keeble ◽  
...  
Keyword(s):  
Acoustic Emission ◽  
Shape Memory Alloy ◽  
Shape Memory ◽  
Simultaneous Detection ◽  
Barkhausen Noise ◽  
Martensitic Transition ◽  
Magnetic Shape Memory ◽  
Magnetic Shape Memory Alloy

Acoustic Emission Avalanches in Martensitic Transitions: New Perspectives for the Problem of Source Location

2011 ◽  
Vol 172-174 ◽  
pp. 144-149 ◽  
Author(s):  
Eduard Vives ◽  
Daniel Enrique Soto Parra ◽  
Antoni Planes ◽  
Lluís Mañosa ◽  
Ricardo Romero ◽  
...  
Keyword(s):  
Finite Element ◽  
Acoustic Emission ◽  
Shape Memory Alloy ◽  
Shape Memory ◽  
Spatial Resolution ◽  
Finite Element Methods ◽  
Simultaneous Detection ◽  
Martensitic Transformations ◽  
Barkhausen Noise ◽  
Thermally Induced

Different experimental procedures for the location of sources of Acoustic Emission (AE) avalanches during Martensitic Transformations are discussed. A first example corresponds to the 1D location of AE events during stress-induced martensitic transitions in a Cu-Zn-Al shape memory alloy (3.5 cm length). The obtained data allows monitoring of the interface advancement with a spatial resolution of less than 1 mm. Secondly, we discuss two different ideas that have significant potential for improving this resolution in the case of thermally induced transitions in small single crystalline samples (~1 cm): the use of elastodynamic simulations based on finite element methods and the simultaneous detection of AE and Barkhausen noise in ferromagnetic samples.

Origin of anomalous cryogenic magnetic behavior in a Ni-Mn-based magnetic shape memory alloy

2017 ◽  
Vol 110 (13) ◽  
pp. 132402 ◽  
Author(s):  
X. M. Sun ◽  
D. Y. Cong ◽  
K.-D. Liss ◽  
Y. H. Qu ◽  
L. Ma ◽  
...  
Keyword(s):  
Shape Memory Alloy ◽  
Shape Memory ◽  
Magnetic Behavior ◽  
Magnetic Shape Memory ◽  
Magnetic Shape Memory Alloy

Giant solid-state barocaloric effect in the Ni–Mn–In magnetic shape-memory alloy

2010 ◽  
Vol 9 (6) ◽  
pp. 478-481 ◽  
Author(s):  
Lluís Mañosa ◽  
David González-Alonso ◽  
Antoni Planes ◽  
Erell Bonnot ◽  
Maria Barrio ◽  
...  
Keyword(s):  
Solid State ◽  
Shape Memory Alloy ◽  
Shape Memory ◽  
Magnetic Shape Memory ◽  
Magnetic Shape Memory Alloy
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