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Assessment of hole quality and thrust force when drilling CFRP/AL stack using carbide tools

Drilling composite materials is challenging due to the anisotropic and non-homogenous structure of composites. In fabrication works, metals are joined to composites to form a hybrid strengthened structures, and this posed a great problem during drilling, due to the dissimilar drilling conditions for...

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Main Authors: Ashrafi, Sina Alizadeh, Sharif, Safian, Yahya, Mohd. Yazid, Davoudinejad, Ali
Format: Article
Published: 2012
Subjects:
TJ Mechanical engineering and machinery
Online Access:http://eprints.utm.my/id/eprint/46624/
http://dx.doi.org/10.4028/www.scientific.net/AMM.234.28
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spelling my.utm.466242017-09-17T07:06:15Z http://eprints.utm.my/id/eprint/46624/ Assessment of hole quality and thrust force when drilling CFRP/AL stack using carbide tools Ashrafi, Sina Alizadeh Sharif, Safian Yahya, Mohd. Yazid Davoudinejad, Ali TJ Mechanical engineering and machinery Drilling composite materials is challenging due to the anisotropic and non-homogenous structure of composites. In fabrication works, metals are joined to composites to form a hybrid strengthened structures, and this posed a great problem during drilling, due to the dissimilar drilling conditions for each material and also sharp metal chips effect on the quality of hole on composite plates. This paper evaluates the experimental results on the machining performance of coated and uncoated 4 facet carbide drills when dry drilling stack of carbon fiber reinforced plastic (CFRP) and aluminum. Drilling trials were carried out on CFRP/Al2024/CFRP stack at constant cutting speed of 37 m/min with three feed rates within 0.03-0.25 mm/rev. Results revealed that 4 facet coated drills performed better than uncoated drills in terms of delamination. It was found that hole entry delamination increases with increasing feed rate, however uncut fibers which were dominant at low feeds on hole exit, disappears with increasing feed rate. It was also found that thrust force for coated tools were quite higher than uncoated tools. 2012 Article PeerReviewed Ashrafi, Sina Alizadeh and Sharif, Safian and Yahya, Mohd. Yazid and Davoudinejad, Ali (2012) Assessment of hole quality and thrust force when drilling CFRP/AL stack using carbide tools. Applied Mechanics and Materials, 234 . pp. 28-33. ISSN 1660-9336 http://dx.doi.org/10.4028/www.scientific.net/AMM.234.28
institution Universiti Teknologi Malaysia
building UTM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Malaysia
content_source UTM Institutional Repository
url_provider http://eprints.utm.my/
topic TJ Mechanical engineering and machinery
spellingShingle TJ Mechanical engineering and machinery
Ashrafi, Sina Alizadeh
Sharif, Safian
Yahya, Mohd. Yazid
Davoudinejad, Ali
Assessment of hole quality and thrust force when drilling CFRP/AL stack using carbide tools
description Drilling composite materials is challenging due to the anisotropic and non-homogenous structure of composites. In fabrication works, metals are joined to composites to form a hybrid strengthened structures, and this posed a great problem during drilling, due to the dissimilar drilling conditions for each material and also sharp metal chips effect on the quality of hole on composite plates. This paper evaluates the experimental results on the machining performance of coated and uncoated 4 facet carbide drills when dry drilling stack of carbon fiber reinforced plastic (CFRP) and aluminum. Drilling trials were carried out on CFRP/Al2024/CFRP stack at constant cutting speed of 37 m/min with three feed rates within 0.03-0.25 mm/rev. Results revealed that 4 facet coated drills performed better than uncoated drills in terms of delamination. It was found that hole entry delamination increases with increasing feed rate, however uncut fibers which were dominant at low feeds on hole exit, disappears with increasing feed rate. It was also found that thrust force for coated tools were quite higher than uncoated tools.
format Article
author Ashrafi, Sina Alizadeh
Sharif, Safian
Yahya, Mohd. Yazid
Davoudinejad, Ali
author_facet Ashrafi, Sina Alizadeh
Sharif, Safian
Yahya, Mohd. Yazid
Davoudinejad, Ali
author_sort Ashrafi, Sina Alizadeh
title Assessment of hole quality and thrust force when drilling CFRP/AL stack using carbide tools
title_short Assessment of hole quality and thrust force when drilling CFRP/AL stack using carbide tools
title_full Assessment of hole quality and thrust force when drilling CFRP/AL stack using carbide tools
title_fullStr Assessment of hole quality and thrust force when drilling CFRP/AL stack using carbide tools
title_full_unstemmed Assessment of hole quality and thrust force when drilling CFRP/AL stack using carbide tools
title_sort assessment of hole quality and thrust force when drilling cfrp/al stack using carbide tools
publishDate 2012
url http://eprints.utm.my/id/eprint/46624/
http://dx.doi.org/10.4028/www.scientific.net/AMM.234.28
_version_ 1643652090572046336
score 13.211869

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