Thermographic detection of fatigue damage of pressure vessel steels at 1,000 Hz and 20 Hz

P. K. Liaw; H. Wang; L. Jiang; B. Yang; J. Y. Huang; R. C. Kuo; J. G. Huang

doi:10.1016/S1359-6462(99)00358-9

Thermographic detection of fatigue damage of pressure vessel steels at 1,000 Hz and 20 Hz

P. K. Liaw, H. Wang, L. Jiang, B. Yang, J. Y. Huang, R. C. Kuo, J. G. Huang

Nuclear Energy Materials Microanalysis

Research output: Contribution to journal › Article › peer-review

127 Scopus citations

Abstract

The heat conditions of fatigued pressure vessel steels at 1,000 Hz and 20 Hz were detected using a thermographic infrared imaging system. Four stages of temperature profiles were observed during fatigue testing: an initial increase of the average specimen temperature, an equilibrium-temperature region, an abrupt increase of the temperature, and a drop of the temperature following specimen failure. Temperature oscillation was observed within each fatigue cycle. An image subtraction technique in the infrared detection system can be used to monitor crack initiation and propagation behavior.

Original language	English
Pages (from-to)	389-395
Number of pages	7
Journal	Scripta Materialia
Volume	42
Issue number	4
DOIs	https://doi.org/10.1016/S1359-6462(99)00358-9
State	Published - Jan 31 2000

Funding

The authors are very grateful to Taiwan Power Company for the financial support. We would also like to acknowledge the financial support of National Science Foundation (DMI-9724476 and EEC-9527527) with Dr. D. R. Durham and Ms. M. F. Poats, as contract monitors, respectively. A portion of the work was sponsored by the U.S. Department of Energy Secretary for Energy Efficiency and Renewable Energy, Office of Transportation Technologies, as part of the High Temperature Materials Laboratory User Program under contract DE-AC05-96OR22464, managed by Lockheed Martin Energy Research Corporation. We would like to greatly acknowledge Dr. C. R. Hubbard and Dr. A. E. Pasto of Oak Ridge National Laboratory (ORNL) for their critical comments on the paper. We would also like to thank Dr. R. B. Dinwiddie of ORNL for his encouragement. We are grateful to Mr. D. Fielden and Mr. G. Jones for their great help on experiments at the University of Tennessee, Knoxville. Special thanks are due to Dr. T. T. Yang for his encouragement on the present work, and Ms. M. H. Shuen and Ms. F. C. Cheng for their great help in typing the manuscript at the Institute of Nuclear Energy Research (INER), Taiwan.

Funders	Funder number
Office of Transportation Technologies	DE-AC05-96OR22464
Taiwan Power Company
National Science Foundation	DMI-9724476, EEC-9527527
Lockheed Martin Corporation
Office of Energy Efficiency and Renewable Energy

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AU - Kuo, R. C.

AU - Huang, J. G.

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AB - The heat conditions of fatigued pressure vessel steels at 1,000 Hz and 20 Hz were detected using a thermographic infrared imaging system. Four stages of temperature profiles were observed during fatigue testing: an initial increase of the average specimen temperature, an equilibrium-temperature region, an abrupt increase of the temperature, and a drop of the temperature following specimen failure. Temperature oscillation was observed within each fatigue cycle. An image subtraction technique in the infrared detection system can be used to monitor crack initiation and propagation behavior.

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Thermographic detection of fatigue damage of pressure vessel steels at 1,000 Hz and 20 Hz

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