Formation behavior of bubbles and its effect on joining strength in dissimilar materials laser spot joining between PET and SUS304

Formation behavior of bubbles and its effect on strength in PET/SUS304 dissimilar materials laser spot lap joint was studied. Surface of SUS304 was irradiated through transparent PET with fiber laser. Static and cyclic contact force was applied at the welding region during the joining process. Stren...

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Autores principales:	Yukio MIYASHITA, Teppei WATANABE, Yuichi OTSUKA
Formato:	article
Lenguaje:	EN
Publicado:	The Japan Society of Mechanical Engineers 2015
Materias:	dissimilar materials joint pet stainless steel laser spot joining strength of joint Mechanical engineering and machinery TJ1-1570
Acceso en línea:	https://doaj.org/article/bd35bf51d3d34c5dacf3ccd4236e1f35
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spelling	oai:doaj.org-article:bd35bf51d3d34c5dacf3ccd4236e1f352021-11-26T06:16:58ZFormation behavior of bubbles and its effect on joining strength in dissimilar materials laser spot joining between PET and SUS3042187-974510.1299/mej.14-00429https://doaj.org/article/bd35bf51d3d34c5dacf3ccd4236e1f352015-01-01T00:00:00Zhttps://www.jstage.jst.go.jp/article/mej/2/1/2_14-00429/_pdf/-char/enhttps://doaj.org/toc/2187-9745Formation behavior of bubbles and its effect on strength in PET/SUS304 dissimilar materials laser spot lap joint was studied. Surface of SUS304 was irradiated through transparent PET with fiber laser. Static and cyclic contact force was applied at the welding region during the joining process. Strength of the joint was evaluated by conducting tensile shear test. The formation behavior of bubbles inside PET nearby the interface changed with change in condition of contact force. In case of applying lower static contact force, welded area and failure load of the joint increased with increase in contact force. This result might be due to flow of molten PET by applying compressive force. On the other hand, when higher static contact force was applied, welded area and failure load of the joint decreased, because suppress of the flowing for molten and softened PET occurred. The joint joined with applying cyclic contact force showed lower values of welded area and failure load compared to the joint joined with applying the same maximum static contact force. According to fracture surface observation, crack mainly passed through bubbles to failure in all joints. Apparent strength was calculated by failure load and welded area obtained. The strength of the joint decreased with increase in bubbles density, except the joint joined without contact force. In case of joint joined without contact force, large bubbles were formed and decreased strength. Bubble size formed was small when contact force was applied. Density of bubbles affected strength of the joint and changed by applying contact force, particularly that decreased by applying cyclic contact force. It is considered that applying the contact force is an effective way to control formation behavior of bubbles and results in improvement for reliability of the dissimilar material joint between plastic and metallic materials.Yukio MIYASHITATeppei WATANABEYuichi OTSUKAThe Japan Society of Mechanical Engineersarticledissimilar materials jointpetstainless steellaser spot joiningstrength of jointMechanical engineering and machineryTJ1-1570ENMechanical Engineering Journal, Vol 2, Iss 1, Pp 14-00429-14-00429 (2015)
institution	DOAJ
collection	DOAJ
language	EN
topic	dissimilar materials joint pet stainless steel laser spot joining strength of joint Mechanical engineering and machinery TJ1-1570
spellingShingle	dissimilar materials joint pet stainless steel laser spot joining strength of joint Mechanical engineering and machinery TJ1-1570 Yukio MIYASHITA Teppei WATANABE Yuichi OTSUKA Formation behavior of bubbles and its effect on joining strength in dissimilar materials laser spot joining between PET and SUS304
description	Formation behavior of bubbles and its effect on strength in PET/SUS304 dissimilar materials laser spot lap joint was studied. Surface of SUS304 was irradiated through transparent PET with fiber laser. Static and cyclic contact force was applied at the welding region during the joining process. Strength of the joint was evaluated by conducting tensile shear test. The formation behavior of bubbles inside PET nearby the interface changed with change in condition of contact force. In case of applying lower static contact force, welded area and failure load of the joint increased with increase in contact force. This result might be due to flow of molten PET by applying compressive force. On the other hand, when higher static contact force was applied, welded area and failure load of the joint decreased, because suppress of the flowing for molten and softened PET occurred. The joint joined with applying cyclic contact force showed lower values of welded area and failure load compared to the joint joined with applying the same maximum static contact force. According to fracture surface observation, crack mainly passed through bubbles to failure in all joints. Apparent strength was calculated by failure load and welded area obtained. The strength of the joint decreased with increase in bubbles density, except the joint joined without contact force. In case of joint joined without contact force, large bubbles were formed and decreased strength. Bubble size formed was small when contact force was applied. Density of bubbles affected strength of the joint and changed by applying contact force, particularly that decreased by applying cyclic contact force. It is considered that applying the contact force is an effective way to control formation behavior of bubbles and results in improvement for reliability of the dissimilar material joint between plastic and metallic materials.
format	article
author	Yukio MIYASHITA Teppei WATANABE Yuichi OTSUKA
author_facet	Yukio MIYASHITA Teppei WATANABE Yuichi OTSUKA
author_sort	Yukio MIYASHITA
title	Formation behavior of bubbles and its effect on joining strength in dissimilar materials laser spot joining between PET and SUS304
title_short	Formation behavior of bubbles and its effect on joining strength in dissimilar materials laser spot joining between PET and SUS304
title_full	Formation behavior of bubbles and its effect on joining strength in dissimilar materials laser spot joining between PET and SUS304
title_fullStr	Formation behavior of bubbles and its effect on joining strength in dissimilar materials laser spot joining between PET and SUS304
title_full_unstemmed	Formation behavior of bubbles and its effect on joining strength in dissimilar materials laser spot joining between PET and SUS304
title_sort	formation behavior of bubbles and its effect on joining strength in dissimilar materials laser spot joining between pet and sus304
publisher	The Japan Society of Mechanical Engineers
publishDate	2015
url	https://doaj.org/article/bd35bf51d3d34c5dacf3ccd4236e1f35
work_keys_str_mv	AT yukiomiyashita formationbehaviorofbubblesanditseffectonjoiningstrengthindissimilarmaterialslaserspotjoiningbetweenpetandsus304 AT teppeiwatanabe formationbehaviorofbubblesanditseffectonjoiningstrengthindissimilarmaterialslaserspotjoiningbetweenpetandsus304 AT yuichiotsuka formationbehaviorofbubblesanditseffectonjoiningstrengthindissimilarmaterialslaserspotjoiningbetweenpetandsus304
_version_	1718409805558710272

Formation behavior of bubbles and its effect on joining strength in dissimilar materials laser spot joining between PET and SUS304

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