ISSN: 1945-7553
CODEN: JTEVAB
Published Online: 26 March 2009
Page Count: 23

Flexural Strength of Ceramic and Glass Rods

Quinn, George D.
National Institute of Standards and Technology, Gaithersburg, MD

Sparenberg, Brian T.
University of Maryland, Baltimore, MD

Koshy, Philip
McMaster University, Hamilton, Ontario

Ives, Lewis K.
National Institute of Standards and Technology, Gaithersburg, MD

Jahanmir, Said
MITI Heart, Albany, NY

Arola, Dwayne D.
University of Maryland, Baltimore, MD

(Received 3 January 2008; accepted 19 February 2009)

Abstract

Flexural testing is the most common method used to measure the uniaxial tensile strength of ceramics and glasses. Although standard test methods have been developed for rectangular specimens, cylindrical rod specimens may be preferred in many cases. This paper summarizes how rods have been tested in the past, identifies key experimental errors and remedies, and serves as the foundation for a new standard test method for ceramics and glasses.

Keywords:
ASTM C-1684, ceramics, cradles, glass, flexural strength, three-point loading, four-point loading, brittle materials, standard, rods, cylindrical specimens, errors, silicon nitride, strain gage, Weibull statistics, wedging error, concentrated load error, friction error, large deflection, contact cracks, initial curvature error, eccentric loading error, wrong span error, poor articulation, contact point tangency shift error

Paper ID: JTE101649
DOI: 10.1520/JTE101649
ASTM International is a member of CrossRef.