Construction Features of Drilling Tools and Machines in Mining

Authors

  • Stoyan Velev Bulgarian Academy of Sciences
  • Kamelia Kalchevska Bulgarian Academy of Sciences

DOI:

https://doi.org/10.7546/CRABS.2026.01.10

Keywords:

non-destructive testing, visual examination methods, radiographic test method, capillary method

Abstract

Non-destructive methods for examination and control of parts and assemblies of structures allow determining the probable causes of boils and fractures after unacceptable loads. Some of the evaluations were made in the Laboratory of ``Destructive Control at the Institute of Metal Science, Equipment and Technologies with Hydro- and Aerodynamics Centre “Acad. A. Balevski”.

Author Biographies

Stoyan Velev, Bulgarian Academy of Sciences

Mailing Address:
Institute of Metal Science, Equipment and Technologies with Hydro- and Aerodynamics Centre
Bulgarian Academy of Sciences
67 Shipchenski prohod Blvd,
1574, Sofia, Bulgaria

E-mail: tony_velev@abv.bg

Kamelia Kalchevska, Bulgarian Academy of Sciences

Mailing Address:
Institute of Metal Science, Equipment and Technologies with Hydro- and Aerodynamics Centre
Bulgarian Academy of Sciences
67 Shipchenski prohod Blvd,
1574, Sofia, Bulgaria

E-mail: kami@ims.bas.bg

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Published

28-01-2026

How to Cite

[1]
S. Velev and K. Kalchevska, “Construction Features of Drilling Tools and Machines in Mining”, C. R. Acad. Bulg. Sci., vol. 79, no. 1, pp. 83–87, Jan. 2026.

Issue

Vol. 79 No. 1 (2026)

Section

Engineering Sciences

License

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