U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Search Publications by: Ami Ahure Powell (Fed)

Search Title, Abstract, Conference, Citation, Keyword or Author
Displaying 1 - 5 of 5

An autonomous design algorithm to experimentally realize three-dimensionally isotropic auxetic network structures without compromising density

May 29, 2024
Author(s)
Meng Shen, Marcos Reyes-Martinez, Ami Ahure Powell, Mark Iadicola, Abhishek Sharma, Fabian Bylehn, Nidhi Pashine, Edwin P. Chan, Christopher Soles, Heinrich Jaeger, Juan de Pablo
Auxetic materials have a negative Poisson's ratio and are of significant interest in applications that include impact mitigation, membrane separations and biomedical engineering. While there are numerous examples of structured materials that exhibit

A Non-Intrusive Fluorescent Pattern for Internal Microscale Strain Measurements Using Digital Image Correlation

February 1, 2023
Author(s)
Ami Ahure Powell, William Mulhearn, Shawn Chen, Stephan J. Stranick, Jeffrey Gilman, Mark Iadicola, Jeremiah Woodcock
A non-intrusive and non-disruptive internal fluorescent pattern is designed, developed, and tested using digital image correlation (DIC), an effective non-contact optical method, to measure deformation at internal planes of a polymer matrix material. The

Snappy: A New Automated Testing Machine for Monitoring the Break Evolution Process during Single Fiber Fragmentation Test

October 14, 2022
Author(s)
Ami Ahure Powell, Richard Sheridan, Berkay Yucel, Sezen Yucel, Evan Rust, Jeremiah Woodcock, Jeffrey Gilman, Surya R. Kalidindi, Gale A. Holmes
A measurement of interfacial shear strength (IFSS) in fiber reinforced polymer (FRP) materials remains elusive after more than fifty years. This is due in part to the many sources of uncertainty, the time-consuming nature of the measurements, and the large

High Strain Rate Mechanical Characterization of Carbon Fiber Reinforced Polymer Composites using Digital Image Correlations

March 28, 2017
Author(s)
Louise A. Ahure Powell, William E. Luecke, Matthias J. Merzkirch, Timothy J. Foecke, Katherine Avery
The introduction of carbon fiber reinforced polymer (CFRP) composites to structural components in lightweight automotive structures necessitates an assessment to evaluate that their crashworthiness dynamic response provides similar or higher levels of