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E-Glass/DGEBA/m-PDA Model Composites: Time Dependent Failure in a Brittle Multi-Fiber Composite

June 1, 2002

Author(s)

Gale A. Holmes, Walter G. McDonough

The fiber-direction properties of a unidirectional laminate are generally considered to be fiber-dominated and the elastic modulus may be predicted by the Rule-of-Mixtures approach using the respective Young's modulus of the constituents. However, the

Polymer Composites with High Dielectric Constant

June 1, 2002

Author(s)

C. K. Chiang, R Popielarz

A very high dielectric constant polymer composite film system is presented. The new polymer composite film uses cyanoresin polymer filled with ferroelectric ceramics, such as BaTiO 3 powder. While the dielectric constant of the cyanoresin polymer at 1 kHz

Experimental and Theoretical Evaluations of the Iosipescu Shear Test for Hybrid Fiber Composites

May 1, 2002

Author(s)

J He, Martin Y. Chiang, Walter G. McDonough, Donald L. Hunston

The Iosipescu shear test with a modified Wyoming test fixture (ASTM D5379-93) was investigated experimentally and theoretically as a mean for determining the in-plane shear modulus and strength of unidirectional hybrid composites. Two types of hybrid

Influence of Processing Rate and Formulation on the Interface Strength of Vinyl Ester/E-Glass Composites

April 1, 2002

Author(s)

Walter G. McDonough, Joy Dunkers, Gale A. Holmes, E Feresenbet, Y H. Kim, Richard~undefined~undefined~undefined~undefined~undefined Parnas

The single fiber fragmentation test was used to investigate the effect of gelation time on interfacial shear properties of fast reacting resin systems. We developed a processing system capable of producing single fiber fragmentation samples with gelation

An Analytical Assessment of Using the losipescu Shear Test for Hybrid Composites

January 1, 2002

Author(s)

Martin Chiang, J He

Application of the V-notch Shear Test for Unidirectional Hybrid Composites

January 1, 2002

Author(s)

J He, Martin Y. Chiang, Donald L. Hunston, Charles C. Han

Applications of Optical Coherence Tomography to the Study of Polymer Matrix Composites

January 1, 2002

Author(s)

Joy P. Dunkers

The use of optical coherence tomography (OCT) to study polymer matrix composites (PMCS) is very recent. So recent, in fact, that the full potential and limitations of this technique have yet to be studied completely since PMCS are a large and varied class

Comparison of Optical Coherence Tomography, X-Ray Computed Tomography, and Confocal Microscopy Results From an Impact Damaged Epoxy/E-Glass Composite

January 1, 2002

Author(s)

Joy Dunkers, D P. Sanders, Donald L. Hunston, M J. Everett, William H. Green

Optical coherence tomography (OCT) is an emerging technique for imaging of synthetic materials. OCT is attractive because of the combination of its high sensitivity (>90 dB), high resolution ((10-20) mm), and low cost ($75 k). The value of any new

Model-Assisted Feedback Control for Liquid Composite Molding

January 1, 2002

Author(s)

Joy P. Dunkers, Kathleen M. Flynn, Richard~undefined~undefined~undefined~undefined~undefined Parnas, D D. Sourlas

Non-Destructive Characterization of the Morphology of a Polymer Co-Extruded Scaffold Using Optical Coherence Tomography

December 19, 2001

Author(s)

Joy P. Dunkers, N Washburn, Carl G. Simon Jr., Alamgir Karim, Eric J. Amis

It is generally understood that a complex interaction of many variables controls the success of cell infiltration, proliferation, and differentiation within a tissue scaffold. One parameter that has a large influence on the development of functioning

The Prediction of Permeability for an Epoxy/E-Glass Composite Using Optical Coherence Tomographic Images

December 1, 2001

Author(s)

Joy Dunkers, Frederick R. Phelan Jr., C G. Zimba, Kathleen M. Flynn, D P. Sanders, R C. Peterson, Richard~undefined~undefined~undefined~undefined~undefined Parnas

Knowledge of the permeability tensor in liquid composite molding is important for process optimization. Unfortunately, experimental determination of permeability is difficult and time consuming. A rapid, non-destructive technique called optical coherence

Dielectric Properties of Polymer/Ferroelectric Ceramic Composites From 100 Hz to 10 GHz

August 1, 2001

Author(s)

R Popielarz, C. K. Chiang, R Nozaki, Jan Obrzut

Dielectric properties of model BaTiO 3/polymer composites were measured over a broad frequency and temperature range. A series of BaTiO 3/monomer suspensions were photocured into thin wafers. The wafers were equipped with aluminum electrodes and the

Methacrylate Conversion in Photopolymerized Composites Containing Amorphous Calcium Phosphate Fillings

August 1, 2001

Author(s)

Joseph M. Antonucci, Drago Skrtic, R T. Brunworth

Recently a new class of photocurable composites has been developed that utilize amorphous calcium phosphate (ACP) as the filler phase with photoactivated dental monomer systems such as 2,2-bis[p-(2'-hydroxy-3'-methacryloxypropoxy)phenyl]propane (Bis-GMA)