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Author: Aaron Forster
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1. Recommendations for Specifying Idealized Bust Surrogates for the Testing of Female Stab Resistant Armor
NIST Interagency/Internal Report (NISTIR)
Amanda Lattam Forster, Kirk D Rice, Michael A Riley, Aaron M Forster
This document describes recommendations provided to the National Institute of Justice's (NIJ) Special Technical Committee (STC) for the revision of the Stab Resistant Body Armor Standard related to the specification of idealized bust surrogates for a ...
2. Indentation device for in situ Raman spectroscopic and optical studies
Yvonne Beatrice Gerbig, Chris A Michaels, Aaron M Forster, John W Hettenhouser, Walter Eric Byrd, Dylan J. Morris, Robert Francis Cook
Instrumented indentation is a widely used technique to study the mechanical behavior of materials at small length scales and thus has been exploited in particular for metals, ceramics, glasses, and polymers. Mechanical tests of bulk materials, micros ...
3. Imaging the Molecular Structure of Polyethylene Blends with Broadband Coherent Raman Microscopy
Young Jong Lee, Chad R Snyder, Aaron M Forster, Marcus T Cicerone, Wen-Li Wu
Polyethylene (PE) is a ubiquitous material in our daily life appearing as milk bottles, toys and diapers. A lesser-known but increasingly important use of PE is as underground gas and water pipes, because of its ease of installation and lack of corr ...
4. Identifying the Dynamic Compressive Stiffness of a Prospective Biomimetic Elastomer by an Inverse Method
Steven P Mates, Aaron M Forster, Donald Hunston, Richard Everett, Kirth Simmonds, Amit Bagchi
Elastomeric materials that mimic real soft human tissues are sought to provide realistic experimental devices to simulate the human body’s response to concussive loading so that better protective equipment can be developed. Tissue injury occurs under ...
5. Influence of solvent washing on interlayer structure of alkylammonium montmorillonites
Wayne L. (Wayne L) Elban, John A. (John A) Howarter, Mickey C. Richardson, Paul E Stutzman, Aaron M Forster, Adam J. Nolte, Gale Antrus Holmes
Powdered samples of montmorillonite were functionalized with ammonium surfactants of various chain lengths and subjected to two different constant volume washing procedures: water only or sequential ethanol-water. The organo-functionalized montmoril ...
6. In situ observation of the indentation-induced phase transformation of silicon thin films
Yvonne Beatrice Gerbig, Chris A Michaels, Aaron M Forster, Robert Francis Cook
Indentation-induced phase transformation processes were studied by in situ Raman microspectroscopy of the deformed contact region of silicon on sapphire samples during contact loading and unloading. During loading, the formation of Si-II and another ...
7. Modeling and DIC Measurements of Dynamic Compression Tests of a Soft Tissue Simulant
Steven P Mates, Aaron M Forster, R Rhorer, Amit Bagchi, Richard Everett, Kirth Simmonds
Stereoscopic digital image correlation (DIC) is used to measure the shape evolution of a soft, transparent thermoplastic material subject to a high strain rate compression test performed using a Kolsky bar. Rather than using the usual Kolsky bar wave ...
8. Energy Absorption Measurements to Standardize Foam in Stab Testing
Aaron M Forster, Diane Mauchant, Elizabeth Wailes, Amanda Lattam Forster, Michael A Riley, Kirk D Rice
Polymer foams serve an important role in the assessment and certification of stab resistant body armor for both US and UK standards. A composite of neoprene and polyethylene foam is used behind the armor during testing. The foam mimics stab dynamic ...
9. Matrix Relaxation After Fracture In A Toughened Epoxy
Aaron M Forster, Aurelien Blond, Donald Lee Hunston
The inclusion of phase-separated rubber particles in a brittle thermoset matrix has been shown to increase the Mode I fracture energies for a wide range of model and commercial adhesives. Our recent efforts combine these two approaches by comparing t ...
10. Characterization of Ambient Temperature Cure Epoxies
Used in Adhesive Anchor Applications
Joannie W Chin, Aaron M Forster, Cyril Clerici, Donald Lee Hunston
Thermo-viscoelastic properties and creep response of two commercial, ambient temperature cure epoxy structural adhesives were analyzed and compared. The adhesives were formulated by the same manufacturer and appeared to have the same base chemistry; ...