Acta Univ. Agric. Silvic. Mendelianae Brun. 2016, 64(3), 751-758 | DOI: 10.11118/actaun201664030751

Testing of Macroscopic Hardness by Acoustic Response

Michal Černý, Michal Šustr, Petr Dostál
Department of Technology and Automobile Transport, Faculty of AgriSciences, Mendel University in Brno, Zemědělská 1, 613 00 Brno, Czech Republic

Static measurement of macroscopic hardness (hereinafter macrohardness) of metal materials by using indentation testing is accompanied by deformation in the vicinity of the indenter. Its indenting in a material, monitoring of consequent acoustic response during plastic deformation and interconnection with the records of acoustic emission (hereinafter AE) is the aim of this submitted paper. This non-destructive testing (NDT) method concentrates on the comparison of an acoustic event and the result of the hardness measurement of steels with different hardness values and for a specimen made from steel and tungsten carbide. The aforementioned measurements were conducted concurrently at two workplaces and resulted in very good conformance of records for hard materials. The result obtained confirms the possibility of carrying out correlation between the results of measuring hardness and those obtained from the hits at the acoustic emission testing.

Keywords: measurement of metal hardness, plastic deformation, acoustic emission, deformation response
Grants and funding:

The research has been supported by the project IP 10/2015 "Degradation properties of welded joints", financed by IGA AF MENDELU.

Prepublished online: July 4, 2016; Published: July 1, 2016  Show citation

ACS AIP APA ASA Harvard Chicago IEEE ISO690 MLA NLM Turabian Vancouver
Černý, M., Šustr, M., & Dostál, P. (2016). Testing of Macroscopic Hardness by Acoustic Response. Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis, 64(3), 751-758. doi: 10.11118/actaun201664030751
Share...
Download citation
  • BibTeX (.bib)
  • Bookends (.ris)
  • EasyBib (.ris)
  • EndNote (.enw)
  • EndNote 8 (.xml)
  • ISI WoS (.isi)
  • Medlars (.medlars)
  • Mendeley (.ris)
  • MODS (.xml)
  • Papers (.ris)
  • RefWorks (.txt)
  • RefManager (.ris)
  • RIS (.ris)
  • MS Word (.xml)
  • Zotero (.ris)
    • Open full article

    References

    1. BOHÁČ, P., TOMAŠTÍK, J., ČVRTLÍK, R., DRÁB, M., KOULA, V., CVRK, K. and JASTŘABÍK, L. 2014. Acoustic Emission Generated during Scratch Test of Various Thin Films. e-Journal of Nondestructive Testing, 19. Available at:
    2. ČERNÝ, M., MAZAL, P., FILÍPEK, J. 2005. Visualization of stress and deformation with use of AE. Acta Univ. Agric. Silvic. Mendelianae Brun., LIII(2): 63-74. DOI: 10.11118/actaun200553020063 Go to original source...
    3. DOSTÁL, P., ČERNÝ, M., LEV, J., VARNER, D. 2011. Proportional monitoring of the acoustic emission in cryptoconditions. Acta Univ. Agric. Silvic. Mendelianae Brun., LIX(5): 31-38. DOI: 10.11118/actaun201159050031 Go to original source...
    4. KOPEC, B. 2008. Nedestruktivní zkoušení materiálů a konstrukcí. 1st edition. Brno: Akademické nakladatelství CERM.
    5. KŘÍŽ A. 2015. Zkoušky_tvrdosti. [Online]. Available at: [Accessed: 2015, August 13].
    6. LUDVÍK, J., BÍLEK, K., LUDVÍK, Š. 2002. Zkoušky_tvrdosti. [Online]. Available at: [Accessed: 2010, March 4].
    7. MACHEK, V. 2011. Zpracování a zkoušení kovových materiálů. 1st edition. Praha: České vysoké učení technické.
    8. PTÁČEK, L. 2003. Nauka o materiálu I. 2nd edition. Brno: Akademické nakladatelství CERM.

    This is an open access article distributed under the terms of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License (CC BY NC ND 4.0), which permits non-comercial use, distribution, and reproduction in any medium, provided the original publication is properly cited. No use, distribution or reproduction is permitted which does not comply with these terms.


    Return to the content