Dr. Constantin Ciocanel Profile

Dr. Constantin Ciocanel

Professor at Northern Arizona Univ

SPIE Involvement:

Conference Program Committee | Author

Publications (20)

Proceedings Article | 18 April 2023 Presentation

Phase field modeling of fracture in Ni2MnGa magnetic shape memory alloys (Conference Presentation)

Glen D'Silva, Constantin Ciocanel

Proceedings Volume PC12484, PC1248402 (2023) https://doi.org/10.1117/12.2658627

KEYWORDS: Magnetism, Shape memory alloys, Mechanics, Data modeling, Magnetic sensors, Anisotropy, Actuators

Read Abstract +

Proceedings Article | 18 April 2022 Presentation

Strain field evaluation in Ni2MnGa magnetic shape memory alloys under combined tensile and magnetic loading using digital image correlation

Glen D'Silva, Heidi Feigenbaum, Constantin Ciocanel

Proceedings Volume PC12044, (2022) https://doi.org/10.1117/12.2621384

KEYWORDS: Magnetism, Digital image correlation, Shape memory alloys, Crystals

Read Abstract +

Proceedings Article | 18 April 2022 Presentation

On the power and efficiency of Ni2MnGa magnetic shape memory alloy power harvesters

Glen D'Silva, Heidi Feigenbaum, Constantin Ciocanel

Proceedings Volume PC12044, (2022) https://doi.org/10.1117/12.2621386

KEYWORDS: Magnetism, Shape memory alloys, Chemical elements, Electromagnetism

Read Abstract +

Proceedings Article | 10 May 2017 Presentation

Electrochemical and mechanical characterization of a PEG based solid polymer electrolyte for power storage composites (Conference Presentation)

Constantin Ciocanel, Cindy Browder, Gerrick Lindberg

Proceedings Volume 10165, 101650O (2017) https://doi.org/10.1117/12.2261882

KEYWORDS: Composites, Solids, Polymers, Multifunctional materials, Adhesives, Mechanics, Current controlled current source

Read Abstract +

Proceedings Article | 3 April 2015 Paper

An investigation of the material and model parameters for a constitutive model for MSMAs

Jason Dikes, Heidi Feigenbaum, Constantin Ciocanel

Proceedings Volume 9435, 943539 (2015) https://doi.org/10.1117/12.2084359

KEYWORDS: Calibration, Magnetism, Anisotropy, Manufacturing, Data modeling, Shape memory alloys, Smart materials, Systems modeling, Thermodynamics, Magnetic sensors

Read Abstract +

Proceedings Article | 26 March 2014 Paper

Design of a multifunctional composite material with enhanced structural and power storage capability

S. Doyle-Lawrence, K. Carroll, R. Guiel, C. Browder, C. Ciocanel

Proceedings Volume 9058, 905809 (2014) https://doi.org/10.1117/12.2046281

KEYWORDS: Resistance, Capacitance, Capacitors, Composites, Electrodes, Polymers, Glasses, Carbon, Lithium, Multifunctional materials

Read Abstract +

Proceedings Article | 20 March 2014 Paper

Numerical predictions versus experimental findings on the power-harvesting output of a NiMnGa alloy

Isaac Nelson, Jason Dikes, Heidi Feigenbaum, Constantin Ciocanel

Proceedings Volume 9058, 905815 (2014) https://doi.org/10.1117/12.2046337

KEYWORDS: Magnetism, Data modeling, Manufacturing, Motion models, Shape memory alloys, Calibration, Actinium, Thermodynamics, Data acquisition, Temperature metrology

Read Abstract +

Proceedings Article | 3 April 2013 Paper

Three dimensional experimental characterization of a NiMnGa alloy

Isaac Nelson, Constantin Ciocanel, Doug LaMaster, Heidi Feigenbaum

Proceedings Volume 8689, 86890Q (2013) https://doi.org/10.1117/12.2024874

KEYWORDS: Magnetism, Shape memory alloys, Data acquisition, Data modeling, 3D modeling, 3D displays, Temperature metrology, Magnetic sensors, Mechanics, Multifunctional materials

Read Abstract +

Magnetic shape memory alloys (MSMAs) are materials that can display up to 10% recoverable strain in response to the application of a magnetic field or compressive mechanical stress. The recoverable strain depends on the magnitude of the stress and magnetic field that is applied to the material. Due to their large strains as well as fast response, MSMAs are suitable for actuation, power harvesting, and sensing applications. Broadening the range of applications for MSMAs requires an understanding of their magneto-mechanical behavior beyond 2D loading cases that have been studied to date. The response of MSMAs is primarily driven by the reorientation of martensite variants. During the reorientation process a change in material’s magnetization occurs. Using a pick-up coil (placed around, or on the side, of the specimen) one may convert this change in magnetization into an electric potential/voltage, making the material act as a power harvester. The magnitude of the output voltage depends on the number of turns of the pick-up coil, the amplitude of the reorientation strain, the magnitude and direction of the biased magnetic field, and the frequency at which the reorientation occurs. This paper presents experimental results for the material behavior under 3D loading conditions, including power harvesting data generated under such loading conditions. The 3D experimental data includes the material’s response to two compressive mechanical stresses, applied in perpendicular directions, simultaneously with the application of a magnetic field applied in the remaining orthogonal direction. The power harvesting data includes magnetic fields in multiple directions and different orientations of the pick-up coil. Results indicate that the presence of a bias magnetic field along the specimen length (i.e. the direction of application of the compressive stress) in addition to that applied normal to the specimen length, leads to an increase in the electric potential output.

Proceedings Article | 3 April 2013 Paper

Magnetization in MSMA: 2D modeling and experimental characterization

Douglas LaMaster, Heidi Feigenbaum, Isaac Nelson, Constantin Ciocanel

Proceedings Volume 8689, 86890Z (2013) https://doi.org/10.1117/12.2009766

KEYWORDS: Magnetism, Data modeling, Calibration, Thermodynamics, Finite element methods, Mathematical modeling, Anisotropy, Gallium nitride, Motion models, Shape memory alloys

Read Abstract +

Proceedings Article | 3 April 2013 Paper

The challenges of achieving good electrical and mechanical properties when making structural supercapacitors

C. Ciocanel, C. Browder, C. Simpson, R. Colburn

Proceedings Volume 8689, 868917 (2013) https://doi.org/10.1117/12.2009738

KEYWORDS: Capacitors, Capacitance, Resistance, Carbon, Electrodes, Lithium, Composites, Dielectrics, Polymers, Solids

Read Abstract +

Proceedings Article | 28 March 2012 Paper

Experimental results for the behavior of MSMAs subjected to loads seen in power harvesting applications and complex loads

C. Ciocanel, H. Feigenbaum

Proceedings Volume 8342, 83421C (2012) https://doi.org/10.1117/12.915749

KEYWORDS: Magnetism, Shape memory alloys, Actuators, Chemical elements, Data modeling, Inductance, Mathematical modeling, Linear filtering, Temperature metrology, Magnetic sensors

Read Abstract +

The microstructure of magnetic shape memory alloys (MSMAs) is comprised of tetragonal martensite variants, each with their preferred internal magnetization orientation. In the presence of an external magnetic field, the martensite variants tend to reorient so that the preferred internal magnetization aligns with the external magnetic field. Thus MSMAs exhibit the shape memory effect when there is a magnetic field in the vicinity of a material point. Furthermore, the tetragonal nature of the martensite variants allows for a compressive stress to cause variant reorientation. This paper focuses on the experimental evaluation of MSMAs in power harvesting as well as on the response of the material under complex loading conditions. The experimental data reported here provides a basis for the evaluation of MSMAs suitability for applications other than the traditional actuation under a constant magnetic field. For power harvesting applications, consider an MSMA element subject to a large enough magnetic field so that all the variants begin in a field preferred state. Keeping the magnetic field constant and adding a variable compressive stress in a direction normal to that of the magnetic field, some or all of the martensitic variants may rotate into a stress preferred state. As the variants reorient, the internal magnetization vectors rotate, and the specimen's magnetization changes. The change in magnetization induces a current in a pick-up coil, resulting in an output voltage at its terminals according to Faraday's law of inductance. For other applications, the loads that an MSMA element is subject to may be different. Investigation into other potential loadings of an MSMA will give a better overall understanding of the magneto-mechanical behavior of MSMAs and perhaps highlight potential applications of these materials. Thus complex loads on MSMAs should be investigated experimentally and eventually modeled mathematically. For example, this work will study variable field and variable stress loading, which might occur if an actuator is being designed to displace a variable load over a controlled distance.

Proceedings Article | 28 March 2012 Paper

Electro-mechanical characterization of structural supercapacitors

T. Gallagher, D. LaMaster, C. Ciocanel, C. Browder

Proceedings Volume 8342, 83420S (2012) https://doi.org/10.1117/12.917478

KEYWORDS: Capacitors, Composites, Capacitance, Resistance, Carbon, Surface plasmons, Electrodes, Polymers, Lithium, Solids

Read Abstract +

Proceedings Article | 28 April 2011 Paper

Electromotive force generation using the dynamic response of Ni[sub]0[/sub]Mn[sub]28.5[/sub]Ga[sub]21.5[/sub] magnetic shape memory alloy

N. Bruno, C. Ciocanel, H. Feigenbaum

Proceedings Volume 7978, 79781P (2011) https://doi.org/10.1117/12.881294

KEYWORDS: Magnetism, Shape memory alloys, Mathematical modeling, Calibration, Data modeling, Simulink, Energy harvesting, Finite element methods, Anisotropy, Magnetic sensors

Read Abstract +

Proceedings Article | 12 April 2010 Paper

Magnetic fluid driven flow in a capillary channel

Nickolaus Bruno, Constantin Ciocanel

Proceedings Volume 7643, 764315 (2010) https://doi.org/10.1117/12.858564

KEYWORDS: Magnetism, Particles, Capillaries, Microfluidics, Magnetorheological finishing, Water, Liquids, Computer simulations, Mechanical engineering, Electronic components

Read Abstract +

Proceedings Article | 10 April 2010 Paper

Structural considerations in designing magnetorheological fluid mounts

The Nguyen, Constantin Ciocanel, Mohammad Elahinia

Proceedings Volume 7643, 764314 (2010) https://doi.org/10.1117/12.848908

KEYWORDS: Magnetorheological finishing, Mathematical modeling, Fluid dynamics, Vibration isolation, Magnetism, Structural design, Switching, Optical isolators, Smart materials, Shape memory alloys

Read Abstract +

Modern vehicles have been increasingly equipped with advanced technologies such as hybrid and cylinder-on-demand to enhance fuel efficiency. These technologies also come with vibration problems due to the switching between the power sources or the variation of the number of active cylinders. To mitigate these vibrations, a large variety of vibration isolators have been proposed, ranging from passive to active isolators. Semi-active mounts are often preferred to other solutions because of their overall low power requirement in operation as well as relatively simpler configurations. Among the semi-active categories, the magnetorheological fluid (MRF) mounts have been proven to be a viable solution for modern vehicle vibration isolation. These mounts can change their stiffness and damping characteristic without involving moving parts, by controlling the yield stress of the MRF housed inside the mount by means of magnetic field. This study looked into several innovative designs for MRF mounts. The characteristics of the mount depend significantly on the compliances of the rubber, the number and arrangement of the fluid chambers and the number of flow passages connecting the chambers. These parameters provide the designers with various options to design the mounts to function in various conditions and over a wide range of frequencies. Different values of the aforementioned parameters were selected to form specific designs with certain characteristics. Mathematical models have been developed for each design and MATLAB/Simulink was used to simulate the response of each mount to certain excitations. As the hydraulic and magnetorheological (MR) effects are dominant in the mount, the elastomer behavior is considered linear. A discussion of the advantages and disadvantages of each design, based on the simulated response, is presented. The outcomes of this study can be a useful reference for MRF mount designers and leads to the development of a general MRF mount design methodology.

Proceedings Article | 7 April 2009 Paper

Analytical modeling and experimental validation of a magnetorheological mount

The Nguyen, Constantin Ciocanel, Mohammad Elahinia

Proceedings Volume 7288, 72881D (2009) https://doi.org/10.1117/12.816014

KEYWORDS: Magnetism, Fluid dynamics, Analytical research, Mathematical modeling, Vibration isolation, Prototyping, Aluminum, Electromagnetism, Optical isolators, Performance modeling

Read Abstract +

Proceedings Article | 1 April 2009 Paper

A preliminary look at how geometry influences the magneto-mechanical behavior of magnetic shape memory alloys

Constantin Ciocanel, Heidi Feigenbaum

Proceedings Volume 7289, 72891N (2009) https://doi.org/10.1117/12.814885

KEYWORDS: Magnetism, Data modeling, Shape memory alloys, Crystals, Calibration, Anisotropy, Gallium nitride, Thermodynamics, Mechanical engineering, Magnetostrictive materials

Read Abstract +

Proceedings Article | 18 April 2008 Paper

Design and modeling of a mixed mode magnetorheological (MR) fluid mount

Constantin Ciocanel, The Nguyen, Mohammad Elahinia

Proceedings Volume 6928, 69281C (2008) https://doi.org/10.1117/12.775993

KEYWORDS: Magnetism, Magnetic tracking, Fluid dynamics, Vibration isolation, Switching, Hybrid vehicles, Control systems, Resistance, Amplifiers

Read Abstract +

Proceedings Article | 6 April 2006 Paper

A particle pair model for magnetorheological fluids

Constantin Ciocanel, Glenn Lipscomb, Nagi Naganathan

Proceedings Volume 6170, 61700S (2006) https://doi.org/10.1117/12.658743

KEYWORDS: Particles, Magnetism, Microfluidics, Motion models, Data modeling, Liquids, Mechanics, Spectroscopy, Power supplies, Spherical lenses

Read Abstract +

Proceedings Article | 16 May 2005 Paper

A constitutive equation for magnetorheological fluid characterization

Constantin Ciocanel, Glenn Lipscomb, Nagi. Naganathan

Proceedings Volume 5761, (2005) https://doi.org/10.1117/12.620082

KEYWORDS: Particles, Magnetism, Microfluidics, Motion models, Liquids, Fluid dynamics, Polymers, Connectors, Instrument modeling, Solids

Read Abstract +

Showing 5 of 20 publications

Conference Committee Involvement (18)

Behavior and Mechanics of Multifunctional Materials XVIII

27 March 2024 | Long Beach, California, United States

Behavior and Mechanics of Multifunctional Materials XVII

13 March 2023 | Long Beach, California, United States

Behavior and Mechanics of Multifunctional Materials XVI

7 March 2022 | Long Beach, California, United States

Behavior and Mechanics of Multifunctional Materials XV

22 March 2021 | Online Only, California, United States

Behavior and Mechanics of Multifunctional Materials XIV

27 April 2020 | Online Only, California, United States

Behavior and Mechanics of Multifunctional Materials XIII

4 March 2019 | Denver, Colorado, United States

Behavior and Mechanics of Multifunctional Materials and Composites XII

5 March 2018 | Denver, Colorado, United States

Behavior and Mechanics of Multifunctional Materials and Composites XI

26 March 2017 | Portland, Oregon, United States

Behavior and Mechanics of Multifunctional Materials and Composites X

21 March 2016 | Las Vegas, Nevada, United States

Behavior and Mechanics of Multifunctional Materials and Composites IX

9 March 2015 | San Diego, California, United States

Behavior and Mechanics of Multifunctional Materials and Composites VIII

10 March 2014 | San Diego, California, United States

Behavior and Mechanics of Multifunctional Materials and Composites VII

10 March 2013 | San Diego, California, United States

Behavior and Mechanics of Multifunctional Materials and Composites VI

12 March 2012 | San Diego, California, United States

Behavior and Mechanics of Multifunctional Materials and Composites V

7 March 2011 | San Diego, California, United States

Behavior and Mechanics of Multifunctional Materials and Composites IV

8 March 2010 | San Diego, California, United States

Behavior and Mechanics of Multifunctional Materials and Composites III

9 March 2009 | San Diego, California, United States

Behavior and Mechanics of Multifunctional and Composite Materials II

10 March 2008 | San Diego, California, United States

Behavior and Mechanics of Multifunctional and Composite Materials

19 March 2007 | San Diego, California, United States

Showing 5 of 18 Conference Committees

View contact details

UPDATE YOUR PROFILE

Is this your profile? Update it now.

Sign into your SPIE.org account

Don’t have a profile and want one?

Create an account on SPIE.org

Keywords/Phrases

Search In:

Publication Years