Thermal shock damage and thermal fatigue of glass -- An acoustoultrasonic study
- Jadavpur Univ., Calcutta (India). Central Glass and Ceramic Research Inst.
Nondestructive assessment of thermal shock damage in glass and ceramics is of considerable importance to prevent catastrophic failure of these materials in full scale engineering applications. Acoustoultransonics, a relatively new nondestructive testing technique, has been used to evaluate thermal shock damage and thermal fatigue of glass. The study is based on quantification of the acoustoultrasonic signal by using the signal analysis technique based on power spectral moments. It has been shown that variation of zeroth power spectral moments with quenching temperature is similar to that of strength with quenching temperature and it provides a quantitative measure of thermal shock resistance in terms of a critical quench temperature differential [Delta][Tc] required for onset of rapid fracture. The magnitude of the moment also provides a qualitative assessment of reduction in strength properties. With repeated quenching moment values decrease exponentially and the amplitudes of major peaks in the frequency spectrum of the signal provide a qualitative assessment of the severity of damage in the material.
- OSTI ID:
- 6654125
- Journal Information:
- Materials Evaluation; (United States), Vol. 52:12; ISSN 0025-5327
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
42 ENGINEERING
GLASS
THERMAL FATIGUE
THERMAL SHOCK
ULTRASONIC TESTING
CRACK PROPAGATION
DATA ANALYSIS
EXPERIMENTAL DATA
ACOUSTIC TESTING
DATA
FATIGUE
INFORMATION
MATERIALS TESTING
MECHANICAL PROPERTIES
NONDESTRUCTIVE TESTING
NUMERICAL DATA
TESTING
360603* - Materials- Properties
420500 - Engineering- Materials Testing