Third-order elastic constants of fused silica and silicate glasses

Journal Article · Wed Mar 01 00:00:00 EST 1995 · Glass Physics and Chemistry

OSTI ID:171841

Sanin, V N; Krenev, Yu L ^[1]; Varshal, B G ^[2]

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1. Voronezh State Technical Univ. (Russian Federation)
2. State Institute of Glass, Moscow (Russian Federation)

The ultrasonic pulse superposition method was applied to the specimens under uniaxial pressure at 77 and 298 K to determine a full set of third-order elastic constants of silicate glasses: silica, lithium silicate, and window glasses. The data obtained were used to calculate the pressure derivatives of elastic moduli of glasses and the relevant Grueneisen parameters. The third-order elastic constants of silica glass were found to be (anomalously) positive quantities and to increase with cooling. Lithium silicate and window glasses exhibit the ordinary negative third-order elastic constants at 298 K, although at low temperatures their anharmonicity acquires some features of silica glass.

• OSTI ID: 171841
• Journal Information: Glass Physics and Chemistry, Vol. 21, Issue 2; Other Information: PBD: Mar-Apr 1995
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
GLASS
ULTRASONIC TESTING
ELASTICITY
LITHIUM SILICATES
HARMONICS
SILICA