STRAIN RATE INFLUENCE ON FRACTURE TOUGHNESS DETERMINED BY SMALL SAMPLES

1 KONOPÍK Pavel
Co-authors:
1 RUND Martin 1 CHVOSTOVÁ Eva
Institution:
1 COMTES FHT a.s., Průmyslová 955, 334 41 Dobřany, Czech Republic, pavel.konopik@comtesfht.cz
Conference:
28th International Conference on Metallurgy and Materials, Hotel Voronez I, Brno, Czech Republic, EU, May 22nd - 24th 2019
Proceedings:
Proceedings 28th International Conference on Metallurgy and Materials
Pages:
593-598
ISBN:
978-80-87294-92-5
ISSN:
2694-9296
Published:
4th November 2019
Proceedings of the conference were published in Web of Science and Scopus.
Metrics:
53 views / 18 downloads
Abstract

This paper describes a methodology of small sample test technique for fracture toughness determination in the upper shelf region. The effect of size and strain rate has been investigated and described. Standard and small sized samples for 3-point bend test were produced and tested from several steels. The results is promising for further usage in many fields, where only limited amount of material is available, like residual life assessment, additive manufacturing industry, local properties determination in case of heterogenic material, etc. In addition, competitive methods like small punch test will be discussed as well.

Keywords: Fracture toughness, miniaturized samples, Micro-Tensile Test, Digital Image Correlation (DIC)
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