This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Factors Affecting Severity of Oven Shock Test for Ceramic Substrates
Technical Paper
2003-01-3074
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
The oven shock test is an accelerated test which is often used to quantify the thermal durability of both coated and uncoated ceramic substrates. The test calls for heating the substrate for 30 minutes in an oven, which is preheated to specified temperature, and then cooling it in ambient environment for 30 minutes. Such a cycle induces axial and tangential stresses, during cooling, in the skin region whose magnitude depends on physical properties, oven temperature, radial temperature gradient and the aspect ratio of substrate. In addition, these stresses vary with time; their maximum values occur as soon as the substrate is taken out of the oven. This paper evaluates the severity of thermal stresses as function of above factors and estimates the probability and mode of failure during cooling using thermocouple data. Methods to reduce these stresses are discussed. The relative severity of the oven shock test is compared with the Maremont thermal cycling test which is an industry standard.
Recommended Content
Authors
Topic
Citation
Gulati, S., Widjaja, S., Hampton, L., and Roe, T., "Factors Affecting Severity of Oven Shock Test for Ceramic Substrates," SAE Technical Paper 2003-01-3074, 2003, https://doi.org/10.4271/2003-01-3074.Also In
Emissions: Advanced Catalyst and Substrates, Measurement and Testing, Diesel Gaseous Emissions
Number: SP-1801; Published: 2003-10-31
Number: SP-1801; Published: 2003-10-31
References
- Gulati, S. T. et al. “Thermal Durability of a Ceramic Wall-Flow Diesel Filter for Light Duty Vehicles,” SAE Paper No. 920143 Detroit February 1992
- Heck, R. M. Farrauto, R. J. Gulati, S. T. Catalytic Air Pollution Control , 2nd John Wiley & Sons Inc. New York 2002
- Gulati, S.T. “Ceramic Catalyst Supports for Gasoline Fuel” Structured Catalysts and Reactors , Cybulski A. Moulijn J. A. Marcel Dekker, Inc. New York 1998
- Gulati, S. T. “Effects of Cell Geometry on Thermal Shock Resistance of Catalytic Monoliths” SAE Paper No. 75071 Detroit February 1975
- Gulati, S. T. et al. “Thermal Shock resistance of Standard and Thin Wall Ceramic Catalysts,” SAE Paper No. 1999-01-0273 Detroit March 1999
- Helfinstine, J. D. Gulati, S. T. “High Temperature Fatigue in Ceramic Honeycomb Catalyst Supports,” SAE Paper No. 852100 Tulsa October 1985
- Stroom, P.D. “Systems Approach to Packaging Design for Automotive Catalytic Converters,” SAE Paper No. 900500 Detroit February 1990
- Gulati, S. T. et al. “Thermal Shock Resistance of Oval Monolithic Heavy Duty Truck Converters,” SAE Paper No. 880101 Detroit February 1988
- Gulati, S. T. et al. “Optimization of Substrate/Washcoat Interaction for Improved Catalytic Durability,” SAE Paper No. 910372 Detroit February 1991
- Gulati, S.T. et al. “Advanced Three-Way Converter System for High Temperature Exhaust Aftertreatment,” SAE Paper No. 970265 Detroit February 1997
- Gulati, S. T. Hampton, L. E. Lambert, D. W. “Thermal Shock Resistance of Advanced Ceramic Catalysts for Close-Coupled Application,” SAE Paper No. 2002-01-0738 Detroit March 2002
- Gulati, S. T. et al. “Improvements in Converter Durability and Activity via Catalyst Formulation,” SAE Paper No. 890796 Detroit February 1989
- Gulati, S. T. et al. “Fatigue and Performance Data for Advanced Thin Wall Ceramic Catalysts,” SAE Paper No. 980670 Detroit February 1998
- Gulati, S. T. “Design and Durability of Standard and Advanced Ceramic Substrates,” SAE Paper No. 2001-01-0011 Pune, India January 2001