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Research solution for automatic hole quality analysis when drilling fiber-reinforced composites

Hrechuk, Andrii LU orcid ; Hörndahl, Mikael LU orcid and Schultheiss, Fredrik LU (2023) In International Journal of Advanced Manufacturing Technology 127(7-8). p.3315-3324
Abstract

Fiber-reinforced polymers are highly demanding composites in aerospace and automotive areas because of their excellent mechanical properties such as stiffness and strength-to-weight ratio. The drilling remains the major machining operation applied to composites to provide high-quality holes for joints between parts. Due to composites plied structure, the drilling is accompanied with unusual form metal cutting defects such as delamination and uncut fibers around the drilled hole. Considering that the tool life of some drills reaches over thousands of holes, the research of composites machinability becomes difficult due to demanded labor intensity in manual inspection of the hole quality. Therefore, this paper develops the research... (More)

Fiber-reinforced polymers are highly demanding composites in aerospace and automotive areas because of their excellent mechanical properties such as stiffness and strength-to-weight ratio. The drilling remains the major machining operation applied to composites to provide high-quality holes for joints between parts. Due to composites plied structure, the drilling is accompanied with unusual form metal cutting defects such as delamination and uncut fibers around the drilled hole. Considering that the tool life of some drills reaches over thousands of holes, the research of composites machinability becomes difficult due to demanded labor intensity in manual inspection of the hole quality. Therefore, this paper develops the research solution for automatic analysis of the hole quality in drilled fiber-reinforced materials. The paper proposes a complex of solutions aimed to speed up the analysis of the hole quality when composites drilling. The solution consists of the developed vacuum table, robot arm with high-speed camera, developed top and bottom lightning systems, and Image Processing algorithms for defect detection from captured images. The paper results show how the developed solution can be used for high routine research activities. The output data, including tested 72 cutting data parameters and full-size tool life test, allowed identifying the operational window for high-speed steel drills and the range of tool life, where drill ensures a certain hole quality. The paper shows the efficiency of the developed research solution can reach 5 s per hole including drilling and full cycle of measurements having measurement error of 1–3%.

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author
; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Automation, Biocomposites, Drilling, Hole quality, Image processing
in
International Journal of Advanced Manufacturing Technology
volume
127
issue
7-8
pages
10 pages
publisher
Springer
external identifiers
  • scopus:85163078421
ISSN
0268-3768
DOI
10.1007/s00170-023-11696-4
language
English
LU publication?
yes
additional info
Publisher Copyright: © 2023, The Author(s).
id
934f6ab0-72e7-485b-af9a-bda2a4e6800b
date added to LUP
2023-07-31 10:25:07
date last changed
2024-03-08 03:59:18
@article{934f6ab0-72e7-485b-af9a-bda2a4e6800b,
  abstract     = {{<p>Fiber-reinforced polymers are highly demanding composites in aerospace and automotive areas because of their excellent mechanical properties such as stiffness and strength-to-weight ratio. The drilling remains the major machining operation applied to composites to provide high-quality holes for joints between parts. Due to composites plied structure, the drilling is accompanied with unusual form metal cutting defects such as delamination and uncut fibers around the drilled hole. Considering that the tool life of some drills reaches over thousands of holes, the research of composites machinability becomes difficult due to demanded labor intensity in manual inspection of the hole quality. Therefore, this paper develops the research solution for automatic analysis of the hole quality in drilled fiber-reinforced materials. The paper proposes a complex of solutions aimed to speed up the analysis of the hole quality when composites drilling. The solution consists of the developed vacuum table, robot arm with high-speed camera, developed top and bottom lightning systems, and Image Processing algorithms for defect detection from captured images. The paper results show how the developed solution can be used for high routine research activities. The output data, including tested 72 cutting data parameters and full-size tool life test, allowed identifying the operational window for high-speed steel drills and the range of tool life, where drill ensures a certain hole quality. The paper shows the efficiency of the developed research solution can reach 5 s per hole including drilling and full cycle of measurements having measurement error of 1–3%.</p>}},
  author       = {{Hrechuk, Andrii and Hörndahl, Mikael and Schultheiss, Fredrik}},
  issn         = {{0268-3768}},
  keywords     = {{Automation; Biocomposites; Drilling; Hole quality; Image processing}},
  language     = {{eng}},
  number       = {{7-8}},
  pages        = {{3315--3324}},
  publisher    = {{Springer}},
  series       = {{International Journal of Advanced Manufacturing Technology}},
  title        = {{Research solution for automatic hole quality analysis when drilling fiber-reinforced composites}},
  url          = {{http://dx.doi.org/10.1007/s00170-023-11696-4}},
  doi          = {{10.1007/s00170-023-11696-4}},
  volume       = {{127}},
  year         = {{2023}},
}