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Search Publications by: George D. Quinn (Assoc)

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Displaying 1 - 25 of 124

Descriptive Fractography on All-Ceramic Dental Crown Failures

October 12, 2021
Author(s)
Susanne Scherrer, Janet Quinn, George D. Quinn, HW A. Wiskott
Descriptive fractography has been applied to three dental ceramic crown failures for understanding the fracture process and assessing possible design inadequacies. In two cases, the original broken parts could be recovered for stereo and SEM analysis. In

Dynamic Compression Tests of Alumina Dumbbells Using a Spherical Joint

December 19, 2019
Author(s)
Richard Rhorer, George D. Quinn, Steven Mates
The dynamic compressive strength of ceramic armor materials is difficult to obtain experimentally due to the sensitivity of fracture strength to even small bending stresses. In this work we introduce a spherical joint into a compression Kolsky bar to

How Standards Help Bring New Materials to the Market

February 19, 2017
Author(s)
Stephen W. Freiman, George D. Quinn
This paper attempts to describe the importance of standards in helping to bring new materials to the market place. Using ceramic materials as an example, the different ways that standards can be important in the materials development process are outlined

Material properties and fractography of an Indirect Dental Resin Composite.

February 23, 2010
Author(s)
Janet B. Quinn, George D. Quinn
Objectives: Determination of material and fractographic properties of a dental indirect resin composite material. Methods: A resin composite (Paradigm, 3M-ESPE, MN) was characterized by strength, static elastic modulus, Knoop hardness, fracture toughness

A Standard Method for Measuring Wafer Bond Strength for MEMS Applications

December 23, 2008
Author(s)
Richard A. Allen, Janet M. Cassard, Winthrop A. Baylies, David T. Read, George D. Quinn, Frank W. DelRio, Kevin T. Turner, Michael Bernasch, Joerg Bagdahn
A round robin, to provide precision and bias data for SEMI standard MS5-1107, Test Method for Wafer Bond Strength Measurements Using Micro-Chevron Test Structures, in underway. The precision and bias data, combined with experience in applying the test

The Increasing Role of Fractography in the Dental Community

October 16, 2008
Author(s)
Janet Quinn, Susanne Scherrer, George D. Quinn
The development of new fabrication capabilities along with new alloys, polymers, composites and advanced ceramics has revolutionized many industries including the manufacture of dental restorations. The testing of dental materials has barely kept pace with