THERMAL SCIENCE

International Scientific Journal

Qi Wei

,

Li Wang

,

Ke-Long Zheng

APPLICATION OF GREY PREDICTION MODEL IN TENSILE STRENGTH OF MATERIAL AT HIGH TEMPERATURE

ABSTRACT
It is difficult to accurate measure of tensile strength of a material especially for a higher temperature. In this paper, a discrete grey prediction model is developed to indirect measurement of the tensile strength of heat-treated steel C1144 for a higher temperature. The expressions of time response function and model parameters, and some properties of the new model are derived. On this basis, the experimental data of the tensile strength of Steel C1144 from 400ºF through 1300ºF is analyzed, and calculation results show that the newly proposed can obtain more accurate results.
KEYWORDS
Indirect measurement, tensile strength, high temperature, grey prediction model
PAPER SUBMITTED: 2025-04-22
PAPER REVISED: 2025-09-28
PAPER ACCEPTED: 2025-10-25
PUBLISHED ONLINE: 2026-07-25
DOI REFERENCE: https://doi.org/10.2298/TSCI250422143W
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Application of grey prediction model in tensile strength of material at high temperature

© 2026 Society of Thermal Engineers of Serbia. Published by the Vinča Institute of Nuclear Sciences, National Institute of the Republic of Serbia, Belgrade, Serbia. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution 4.0 International licence