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Effect of tool geometry and flank wear on drill temperature during CFRP machining

Hrechuk, Andrii LU orcid ; M'Saoubi, Rachid ; Melin, Thomas ; Frejd, Stefan ; Nordberg, Pär ; Karlsson, Lennart LU ; Alm, Per LU ; Kryzhanivskyy, Vyacheslav LU and Bushlya, Volodymyr LU (2026) In Composites Part C: Open Access 19.
Abstract

Carbon Fibre-Reinforced Polymers (CFRP) are a fast growing market of high performance materials and components. Thermally induced damage during machining processes such as drilling or routing are among the limiting factors for product quality, yet accurate temperature measurement remains challenging. This study develops a methodology which combines machinable thermocouples and IR thermometry techniques to measure the temperature of the drill. Proposed combination, further enhanced by careful synchronization, timestamping and postprocessing, allows fine resolution analysis of local temperature along the cutting edges. The study compares three different designs of drills and the impact of their geometry and wear on generated temperature.... (More)

Carbon Fibre-Reinforced Polymers (CFRP) are a fast growing market of high performance materials and components. Thermally induced damage during machining processes such as drilling or routing are among the limiting factors for product quality, yet accurate temperature measurement remains challenging. This study develops a methodology which combines machinable thermocouples and IR thermometry techniques to measure the temperature of the drill. Proposed combination, further enhanced by careful synchronization, timestamping and postprocessing, allows fine resolution analysis of local temperature along the cutting edges. The study compares three different designs of drills and the impact of their geometry and wear on generated temperature. The results indicate that positive rake angle is a favourable geometric feature which allows to maintain lower local temperature of 129–142 °C in unworn state.

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author
; ; ; ; ; ; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
CFRP, Drilling, Temperature, Tool geometry
in
Composites Part C: Open Access
volume
19
article number
100695
pages
10 pages
publisher
Elsevier
external identifiers
  • scopus:105027190016
ISSN
2666-6820
DOI
10.1016/j.jcomc.2026.100695
language
English
LU publication?
yes
id
173bc741-ea3d-4d46-a190-483a963dad07
date added to LUP
2026-01-26 11:10:08
date last changed
2026-02-16 12:00:47
@article{173bc741-ea3d-4d46-a190-483a963dad07,
  abstract     = {{<p>Carbon Fibre-Reinforced Polymers (CFRP) are a fast growing market of high performance materials and components. Thermally induced damage during machining processes such as drilling or routing are among the limiting factors for product quality, yet accurate temperature measurement remains challenging. This study develops a methodology which combines machinable thermocouples and IR thermometry techniques to measure the temperature of the drill. Proposed combination, further enhanced by careful synchronization, timestamping and postprocessing, allows fine resolution analysis of local temperature along the cutting edges. The study compares three different designs of drills and the impact of their geometry and wear on generated temperature. The results indicate that positive rake angle is a favourable geometric feature which allows to maintain lower local temperature of 129–142 °C in unworn state.</p>}},
  author       = {{Hrechuk, Andrii and M'Saoubi, Rachid and Melin, Thomas and Frejd, Stefan and Nordberg, Pär and Karlsson, Lennart and Alm, Per and Kryzhanivskyy, Vyacheslav and Bushlya, Volodymyr}},
  issn         = {{2666-6820}},
  keywords     = {{CFRP; Drilling; Temperature; Tool geometry}},
  language     = {{eng}},
  publisher    = {{Elsevier}},
  series       = {{Composites Part C: Open Access}},
  title        = {{Effect of tool geometry and flank wear on drill temperature during CFRP machining}},
  url          = {{http://dx.doi.org/10.1016/j.jcomc.2026.100695}},
  doi          = {{10.1016/j.jcomc.2026.100695}},
  volume       = {{19}},
  year         = {{2026}},
}