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Search Publications by: Gale A. Holmes (Fed)

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Displaying 1 - 25 of 250

Reaction-Induced Phase Separation (RIPS) in Amine-Cured Epoxy/Epoxy Thermosets.2. Visualization of Heterogeneity using Fluorescence Lifetime Imaging Microscopy (FLIM)

February 25, 2023
Author(s)
Jeremiah Woodcock, Stephan J. Stranick, Anthony Kotula, Gale A. Holmes
The strategic integration of a rhodamine-spirolactam (RS) mechanophore into a transparent bis-epoxide/bis-epoxide/amine and corresponding bis-epoxide/amine networks has revealed, for the first time using fluorescence lifetime imaging microscopy (FLIM)

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

Nano/Bioscience and Technology Education for the 21st Century

October 12, 2021
Author(s)
J Jacobs, Winnie Wong-Ng, Gale A. Holmes, Richard F. Kayser
NEW:Update 2005, the 20th annual workshops for science and technology educators with the theme, NANO/BIOSCIENCE AND TECHNOLOGY EDUCATION FOR THE 21ST CENTURY, was hosted by the National Institute of Standards and Technology/Materials Science and

Damage sensing using a mechanophore crosslinked epoxy resin in single-fiber composites

May 26, 2020
Author(s)
Jeremiah W. Woodcock, Richard J. Sheridan, Ryan Beams, Stephan J. Stranick, William F. Mitchell, Jeffrey W. Gilman, Gale A. Holmes, Catherine L. Brinson, Vamshi Gudapati, hartman David, Amol Vaidya
Natural and man-made composite materials must be tough, durable and damage tolerant1,2. For man-made composites to rival, or exceed, the dynamic, multifunctional performance of natural materials new information about the fundamental mechanisms responsible

Road Mapping Workshop Report on Overcoming Barriers to Adoption of Composites in Sustainable Infrastructure

December 20, 2017
Author(s)
Richard J. Sheridan, Jeffrey W. Gilman, John Busel, David Hartman, Gale A. Holmes, Daniel Coughlin, Paul Kelley, Dustin Troutman, Jim Gutierrez, Charles Bakis, Robert Moser, Ellen Lackey, James R. Fekete, Stephanie S. Watson, Jae Hyun Kim, Aaron M. Forster, Ajay Krishnamurthy, Bharath NMN Natarajan, William O'Donnell
The February 2017 “Road Mapping Workshop on Overcoming Barriers to Adoption of Composites in Infrastructure” brought together designers, manufacturers, researchers, and end-users to identify barriers and potential solutions. Composite products produced in

Nanostructural Evidence of Mechanical Aging and Performance Loss in Ballistic Fibers

September 29, 2017
Author(s)
John Howarter, Ming Liu, Walter G. McDonough, Christopher Soles, Gale A. Holmes
It is understood that the ballistic resistance of aromatic polyamide fibers is related to the fiber's ultimate tensile strength, strain-to-failure, and Young's modulus. Ideal high-performance ballistic materials maximize these properties while minimizing

The Occurrence of Repeated Fiber Breaks in Microcomposites

November 10, 2015
Author(s)
Gale A. Holmes, Edward D. McCarthy, Nathanael A. Heckert, Stefan D. Leigh, Jae Hyun Kim, Jeffrey W. Gilman
The mechanical integrity of a structural composite is strongly affected by the strength and toughness of the fiber–matrix interface/interphase (Norwood, 1994), with interfacial shear strength (IFSS) considered the best quantifying metric. IFSS outputs are

The Fiber Break Evolution Process in a 2-D Epoxy/Glass Multi-Fiber Array

November 2, 2015
Author(s)
Edward D. McCarthy, Jae H. Kim, N. Alan Heckert, Stefan D. Leigh, Jeffrey W. Gilman, Gale A. Holmes
The mechanical integrity of a structural composite is strongly affected by the strength and toughness of the fiber-matrix interface/interphase [1], with interfacial shear strength (IFSS) being the accepted quanti-fying metric. However, the value of the

Characterization of clay composite ballistic witness materials

July 29, 2015
Author(s)
Jonathan E. Seppala, Yoonae Heo, Paul E. Stutzman, John R. Sieber, Chad R. Snyder, Kirk D. Rice, Gale A. Holmes
Mechanical and thermal properties of Roma Plastilina Clay #1 (RP1) were studied through small-amplitude oscillatory shear (SAOS), large-amplitude oscillatory shear (LAOS), and differential scanning calorimetry (DSC), supplemented with thermogravimetric