Ms. Holly M. Schurter Profile

Holly M. Schurter

SPIE Involvement:

Author

Publications (2)

This will count as one of your downloads.

You will have access to both the presentation and article (if available).

DOWNLOAD NOW

This content is available for download via your institution's subscription. To access this item, please sign in to your personal account.

Email or Username Forgot your username?

Password Forgot your password?

Show

Keep me signed in

No SPIE account? Create an account

Proceedings Article | 1 April 2009 Paper

Mechanical behavior and auxetic properties of galfenol

Holly Schurter, Yanning Zhang, Ruqian Wu, Alison Flatau

Proceedings Volume 7289, 72891Y (2009) https://doi.org/10.1117/12.816367

KEYWORDS: Gallium, Crystals, Iron, Data modeling, Aluminum, Chemical species, Metals, Magnetostrictive materials, Magnetism, X-rays

Read Abstract +

This paper presents the results of numerical and experimental investigations into the elastic properties of iron-gallium alloys known as Galfenol, one of only a few metal alloys known to exhibit large auxetic or negative Poisson's ratio behavior. This research was undertaken to develop an understanding of the molecular mechanisms that lead to the unusual macro-scale trends in Galfenol elastic properties, as well as to create an experimentally determined database of these composition-dependent properties. To accomplish this, we have developed quantum theory-based models of the composition-dependent electronic structure of Galfenol alloys. We first present a modeling approach in which systematic density functional calculations and relationships between strains and total energies are employed to predict elastic stiffness constants C₁₁,C₁₂ and C₄₄, from which Poisson's ratio and Young's modulus are calculated. This modeling approach is also used to simulate elastic constants for the iron-aluminum alloy known as Alfenol, which is shown to exhibit similar behavior. We also use these models to simulate the relationship between strains along orthogonal crystallographic directions as an alternate approach for predicting Poisson's ratio values. The second portion of this paper addresses the experimental aspects of this study. Tensile tests of single-crystal Galfenol specimens with compositions of 12 to 25 atomic percent gallium were conducted to determine the composition dependent values of Young's modulus and Poisson's ratio. These experimental results are used to validate model predictions and to provide experimental data to further aid in visualizing trends in elastic properties. This project will enable future researchers to refer to the elastic properties of the alloy obtained using two different techniques, as well as enable them to select the alloy with optimum elastic properties for their applications.

Proceedings Article | 2 April 2008 Paper

Elastic properties and auxetic behavior of Galfenol for a range of compositions

Holly Schurter, Alison Flatau

Proceedings Volume 6929, 69291U (2008) https://doi.org/10.1117/12.776173

KEYWORDS: Gallium, Crystals, Magnetostrictive materials, Metals, Iron, Databases, Statistical analysis, Single crystal X-ray diffraction, X-rays, Data acquisition

Read Abstract +

Iron-gallium alloys (known as Galfenol), are one of only a few metal alloys known to exhibit large auxetic or negative Poisson's ratio behavior. The mechanical properties, including the auxeticity, of Galfenol are strongly dependent on the composition. This research seeks to measure the elastic properties of Galfenol through a range of practical compositions in order to create a thorough database as well as present trends in the elastic properties. This is achieved through tensile testing of single-crystal Galfenol dog-bone-shaped specimens of varying compositions. For each composition, there is one specimen aligned along the [100] crystallographic axis and one aligned along the [110] axis. This project will enable future researchers to confidently know the elastic properties of the alloy, as well as enable them to select the alloy with optimum elastic properties for their applications.

My Library

You currently do not have any folders to save your paper to! Create a new folder below.

Folder Name

Folder Description

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

Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks. You are receiving this notice because your organization may not have SPIE eBooks access.*

*Shibboleth/Open Athens users─please sign in to access your institution's subscriptions.

To obtain this item, you may purchase the complete book in print or electronic format on SPIE.org.

ORGANIZATIONAL
Sign in with credentials provided by your organization.

Organizational Username

Organizational Password

Show/Hide Password

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members:

Non-members: ADD TO CART

Keywords/Phrases

Search In:

Publication Years