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A suitability assessment using an instrumented impact test of the use of selected structural steel grades on the basis of their changes in response to exposure to fire Cover

A suitability assessment using an instrumented impact test of the use of selected structural steel grades on the basis of their changes in response to exposure to fire

Open Access
|Apr 2021

Abstract

In this article, changes occurring in structural steel after exposure to fire are described and discussed. The steel structure before and after fire determines its susceptibility to brittle cracking. The individual phases of cracking are described and interpreted on the basis of a load-displacement graph, directly obtained from the Charpy impact test. The relationship between the intensity of individual fracture energies and the type and appearance of the sample fractures are demonstrated. The program of planned Charpy impact tests and expected hazards after the exposure to fire of selected steel grades are presented. Standard simplified load-displacement graphs are assigned to the steel transition curve. The course of various cracking mechanisms occurring in the case of brittle fractures and plastic fractures are discussed. The aim of this article is to evaluate the possibility of the assessment of structural steel after a fire based on results obtained during the Charpy impact test.

DOI: https://doi.org/10.37705/TechTrans/e2021007 | Journal eISSN: 2353-737X | Journal ISSN: 0011-4561
Language: English
Submitted on: Mar 23, 2021
Accepted on: Apr 21, 2021
Published on: Apr 27, 2021
Published by: Cracow University of Technology
In partnership with: Paradigm Publishing Services
Publication frequency: 1 times per year

© 2021 Paulina Zajdel, published by Cracow University of Technology
This work is licensed under the Creative Commons Attribution-ShareAlike 4.0 License.