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Stress Relaxation Modulus of a Commercial Glass
Author(s) -
MILLS J. J.,
SIEVERT J. L.
Publication year - 1973
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1973.tb12397.x
Subject(s) - materials science , modulus , viscoelasticity , shear modulus , composite material , bulk modulus , relaxation (psychology) , glass transition , dynamic mechanical analysis , stress relaxation , plateau (mathematics) , dynamic modulus , atmospheric temperature range , young's modulus , thermodynamics , stress (linguistics) , mathematics , polymer , physics , mathematical analysis , creep , linguistics , philosophy , psychology , social psychology
The stress relaxation modulus in compression of a container glass was investigated over a wide range of strain, time, modulus, and temperature. The glass is a linear viscoelastic liquid up to 2% strain, and the modulus is a smooth function of time, with no pseudorubbery plateau apparent down to a modulus of 10° dynes/cm 2 . The data cover 4 decades in time and a range of almost 100°C above the glass transition, T 0 =536°C. Within experimental error, changes in temperature simply shift the modulus‐vs‐time curve along the time axis without altering its shape. This behavior implies that the same mechanism controls both the bulk and shear spectra. The shift factors fit the WLF equation well with values for the parameters c 1 and c 2 of 16.7±0.2 and 345±5°C, respectively. Data from the literature for silicate glasses agree with these parameters.