Ultra High Speed Laser Cutting of CFRP Using a Scanner Head

Jung, Kwang-Woon; Kawahito, Yousuk; Katayama, Seiji

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タイトル	Ultra High Speed Laser Cutting of CFRP Using a Scanner Head
著者	Jung, Kwang-Woon Jung, Kwang-Woon
	Kawahito, Yousuk Kawahito, Yousuk
	Katayama, Seiji Katayama, Seiji
キーワード等	Laser cutting
	CFRP
	Ultra high speed
	Heat affected zone
	tensile strength
抄録	Laser cutting of CFRP is well known to be difficult because of the thermal damage to the CFRP material. Therefore, with the objectives of evaluating the cutting poss ibility for long- or short-fiber pellet CFRP sheets of 3 mm in thickness and obtaining narrower HAZ for better cut quality, ultra-high speed cutting was conducted by using a continuous-wave (cw) high-brightness disk laser with a scanner head. The increase in the laser power rendered the cutting time shorter and the kerf depth deeper for a CFRP full cut. It was revealed that CFRP cut with a narrow HAZ of less than 50μm could be produced under the conditions of laser powers of 2 to 5 kW, a cutting speed of 5 m/s, a time interval between repeated runs of 1 second and a defocused distance of 0 mm. It was also confirmed that short fiber pellet CFRP was more easily cut and suffered less thermal damage in comparison with a long fiber one. Furthermore, it was de monstrated that the tensile strength of fully laser-cut CFRP was almost equal to that of the base CFRP specimen. This means the laser-cut surfaces of the CFRP sheet were not degraded in mechanical properties.
公開者	大阪大学接合科学研究所
公開者の別表記	Joining and Welding Research Institute, Osaka University
公開者 (ヨミ)	オオサカダイガクセツゴウカガクケンキュウジョ
掲載誌名	Transactions of JWRI
巻	42
号	2
開始ページ	9
終了ページ	14
刊行年月	2013-12
ISSN	03874508
NCID	AA00867058
URL	http://hdl.handle.net/11094/27405
言語	英語
カテゴリ	紀要論文 Departmental Bulletin Paper
カテゴリ	Transactions of JWRI / Vol.42 No.2 (2013-12)

著者版フラグ	publisher
NII資源タイプ	紀要論文
ローカル資源タイプ	紀要論文
dcmi資源タイプ	text
DCTERMS.bibliographicCitation	Transactions of JWRI.42(2) P.9-P.14
DC.title	Ultra High Speed Laser Cutting of CFRP Using a Scanner Head
DC.creator	Jung, Kwang-Woon
	Kawahito, Yousuk
	Katayama, Seiji
DC.publisher	大阪大学接合科学研究所
DC.language" scheme="DCTERMS.RFC1766	英語
DCTERMS.issued" scheme="DCTERMS.W3CDTF	2013-12
DC.identifier" scheme="DCTERMS.URI	http://hdl.handle.net/11094/27405
DC.subject	Laser cutting
	CFRP
	Ultra high speed
	Heat affected zone
	tensile strength
DCTERMS.abstract	Laser cutting of CFRP is well known to be difficult because of the thermal damage to the CFRP material. Therefore, with the objectives of evaluating the cutting poss ibility for long- or short-fiber pellet CFRP sheets of 3 mm in thickness and obtaining narrower HAZ for better cut quality, ultra-high speed cutting was conducted by using a continuous-wave (cw) high-brightness disk laser with a scanner head. The increase in the laser power rendered the cutting time shorter and the kerf depth deeper for a CFRP full cut. It was revealed that CFRP cut with a narrow HAZ of less than 50μm could be produced under the conditions of laser powers of 2 to 5 kW, a cutting speed of 5 m/s, a time interval between repeated runs of 1 second and a defocused distance of 0 mm. It was also confirmed that short fiber pellet CFRP was more easily cut and suffered less thermal damage in comparison with a long fiber one. Furthermore, it was de monstrated that the tensile strength of fully laser-cut CFRP was almost equal to that of the base CFRP specimen. This means the laser-cut surfaces of the CFRP sheet were not degraded in mechanical properties.
citation_title	Ultra High Speed Laser Cutting of CFRP Using a Scanner Head
citation_author	Jung, Kwang-Woon
	Kawahito, Yousuk
	Katayama, Seiji
citation_publisher	大阪大学接合科学研究所
citation_language	英語
citation_date	2013-12
citation_journal_title	Transactions of JWRI
citation_volume	42
citation_issue	2
citation_firstpage	9
citation_lastpage	14
citation_issn	03874508
citation_public_url	http://hdl.handle.net/11094/27405
citation_keywords	Laser cutting
	CFRP
	Ultra high speed
	Heat affected zone
	tensile strength

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