EFFECT OF NOTCH ANGLE ON FRACTURE TOUGHNESS OF AISI 4340 USING CIRCUMFERENTIALLY NOTCHED BARS

1 BOZKURT Fatih
Co-authors:
2 SCHMIDOVÁ Eva
Institutions:
1 Department of Mechanic, Materials and Machine Parts, Faculty of Transport Engineering, University of Pardubice, Pardubice, Czech Republic, fatih.bozkurt@student.upce.cz
2 Department of Mechanic, Materials and Machine Parts, Faculty of Transport Engineering, University of Pardubice, Pardubice, Czech Republic, eva.schmidova@upce.cz
Conference:
27th International Conference on Metallurgy and Materials, Hotel Voronez I, Brno, Czech Republic, EU, May 23rd - 25th 2018
Proceedings:
Proceedings 27th International Conference on Metallurgy and Materials
Pages:
628-633
ISBN:
978-80-87294-84-0
ISSN:
2694-9296
Published:
24th October 2018
Proceedings of the conference were published in Web of Science and Scopus.
Metrics:
16 views / 6 downloads
Abstract

In this study the effect of notch angle on fracture toughness (KIC) of AISI 4340 steel is investigated by using circumferentially notched bar method. The specimens have three different notch angles 45°, 60°, 75° and specimen diameters (D) – notch diameters (d) ratio (D / d) keep constant as 1.2. The purpose of the study is determining the effect of notch angle on fracture toughness. Moreover, it shows the advantages of using circumferentially notched bar specimen for fracture toughness determination of metallic materials. The obtained fracture toughness values for different notch diameter are compared with the literature. The result shows that the notch angle has significant effect on the value of fracture toughness (KIC).

Keywords: Fracture, fracture toughness, fracture mechanics, circumferentially notched round bar
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