Correlation between static indentation and micro cutting marble-based material

Автор(и)

DOI:

https://doi.org/10.20535/2409-7160.2020.XXI.202819

Ключові слова:

micro-cutting, brittle, static indentation, ductile mode

Анотація

Defining how the chip is formed during micro-cutting can be extremely difficult. The reason is the miniaturization of the process itself in relation to the macro cutting, as well as, the smaller depth of cut in relation to the tool tip radius. Besides, the micro-cutting mechanism is influenced also by the material being machined, as well as the processing conditions. Considering that marble is brittle by its nature, the micro-cutting mechanism does not match that defined for various types of steel, aluminum, etc. Experimental analysis revealed that during the micro-cutting of marble, two different processing modes occur. In the first (ductile mode) micro-cutting is based only on the elastic and plastic deformations. In the second, which corresponds to the brittle fracturing mode, the chip is created by the formation and uncontrolled growth of the cracks within the material. The critical depth of cut that separates the two modes can be determined in many ways, and one of them is the static indentation. In addition, this method can also be used to identify the types of cracks that occur during micro-cutting in a brittle fracturing mode, which is done in this paper.

Біографія автора

Miloš Pjević, University of Belgrade, Faculty of Mechanical Engineering, Department of Production Engineering

Department of Production Engineering, Teaching Assistant

Посилання

Chiaia, B. Fracture mechanisms induced in a brittle material by a hard cutting indenter. International Journal of Solids and structures, 2001, 38.44-45: 7747-7768.

Lee W. B.; Chen, Y. P. Simulation of micro-indentation hardness of FCC single crystals by mechanism-based strain gradient crystal plasticity. International Journal of Plasticity, 2010, 26.10: 1527-1540.

Pjević, M. Investigation of the tool tip radius and the cutting speed influence on the quality indicators in micro cutting the materials based on marble and. Doctoral dissertation, University of Belgrade, Faculty of Mechanical Engineering, 2019.

Gong, J.; Wu, J.; Guan, Z. Examination of the indentation size effect in low-load vickers hardness testing of ceramics. Journal of the European Ceramic Society, 1999, 19.15:2625–2631.

Sidjanin, L.; Rajnovic, D.; Ranogajec, J.; Molnar, E. Measurement of vickers hardness on ceramic floor tiles. Journal of the European ceramic Society. 2007, 27.2:1767–1773.

Quinn, J. B.; QUINN, G. D. Indentation brittleness of ceramics: a fresh approach. Journal of Materials Science, 1997, 32.16:4331–4346.

Ramamurty, U.; Jana, S.; Kawamura, Y.; Chattopadhyay, K. Hardness and plastic deformation in a bulk metallic glass. Acta Materialia, 2005, 53.3:705–717.

##submission.downloads##

Опубліковано

2020-10-10

Як цитувати

Pjević, M. (2020). Correlation between static indentation and micro cutting marble-based material. Матеріали науково-технічної конференції "Прогресивна техніка, технологія та інженерна освіта", (XXI). https://doi.org/10.20535/2409-7160.2020.XXI.202819

Номер

Розділ

ПРОГРЕСИВНА ТЕХНІКА І ТЕХНОЛОГІЯ МАШИНОБУДУВАННЯ