Butt Welding of Transparent Polyamide (PA11) with 1.94um Fiber Laser

Petri Laakso, Saara Ruotsalainen, Otto Gerhard, Alexander Olowinski, Veli Kujanpää

    Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientific

    Abstract

    Laser welding of polymeric products has been manufactured for more than 20 years. During that time polymer welding has developed a lot. In spite of that, there are still some limitations in applying the process to the industry. Typically welding has been made in lap joint configuration with black and clear parts because of optical properties of polymers. When using ~1?m lasers, the absorbing and transparent partners are needed. Previously visually transparent materials have been welded in lap joint configuration using infrared absorbers with ~1?m lasers. Recently new fiber lasers have introduced wavelengths which can have interesting optical properties for polymers. For example, 1.94?m laser has volume absorption through the whole material thickness on selected polyamide 11 (PA11) polymer material. This makes it possible to use butt joint for welding of polymeric components. When butt joint can be introduced, it will enable more possibilities in using polymer welding in the industry. A joint between two clear components without any additional absorbers can also be introduced with these new wavelengths and it will also decrease the costs and enable new applications when no infrared absorbing additives are needed or accepted. This paper presents results of butt welding of transparent PA11 using TWIST method with 1.94?m fiber laser. Weld quality is evaluated visually and by comparing weld tensile strength to base material tensile strength.
    Original languageEnglish
    Title of host publicationCongress proceedings
    Subtitle of host publicationICALEO, 32nd International Congress on Applications of Lasers & Electro-Optics
    PublisherLaser Institute of America
    Pages175-180
    ISBN (Print)978-0-912035-98-7
    Publication statusPublished - 2013
    MoE publication typeB3 Non-refereed article in conference proceedings
    Event32nd International Congress on Applications of Lasers & Electro-Optics, ICALEO - Miami, United States
    Duration: 6 Oct 201310 Oct 2013
    Conference number: 32

    Conference

    Conference32nd International Congress on Applications of Lasers & Electro-Optics, ICALEO
    CountryUnited States
    CityMiami
    Period6/10/1310/10/13

    Fingerprint

    Butt welding
    Fiber lasers
    Polyamides
    Welding
    Polymers
    Lasers
    Welds
    Tensile strength
    Optical properties
    Infrared radiation
    Wavelength
    Laser beam welding
    Industry
    Costs

    Cite this

    Laakso, P., Ruotsalainen, S., Gerhard, O., Olowinski, A., & Kujanpää, V. (2013). Butt Welding of Transparent Polyamide (PA11) with 1.94um Fiber Laser. In Congress proceedings: ICALEO, 32nd International Congress on Applications of Lasers & Electro-Optics (pp. 175-180). Laser Institute of America.
    Laakso, Petri ; Ruotsalainen, Saara ; Gerhard, Otto ; Olowinski, Alexander ; Kujanpää, Veli. / Butt Welding of Transparent Polyamide (PA11) with 1.94um Fiber Laser. Congress proceedings: ICALEO, 32nd International Congress on Applications of Lasers & Electro-Optics. Laser Institute of America, 2013. pp. 175-180
    @inproceedings{fc8379e14d0f47f39be37eb4f71d1eb2,
    title = "Butt Welding of Transparent Polyamide (PA11) with 1.94um Fiber Laser",
    abstract = "Laser welding of polymeric products has been manufactured for more than 20 years. During that time polymer welding has developed a lot. In spite of that, there are still some limitations in applying the process to the industry. Typically welding has been made in lap joint configuration with black and clear parts because of optical properties of polymers. When using ~1?m lasers, the absorbing and transparent partners are needed. Previously visually transparent materials have been welded in lap joint configuration using infrared absorbers with ~1?m lasers. Recently new fiber lasers have introduced wavelengths which can have interesting optical properties for polymers. For example, 1.94?m laser has volume absorption through the whole material thickness on selected polyamide 11 (PA11) polymer material. This makes it possible to use butt joint for welding of polymeric components. When butt joint can be introduced, it will enable more possibilities in using polymer welding in the industry. A joint between two clear components without any additional absorbers can also be introduced with these new wavelengths and it will also decrease the costs and enable new applications when no infrared absorbing additives are needed or accepted. This paper presents results of butt welding of transparent PA11 using TWIST method with 1.94?m fiber laser. Weld quality is evaluated visually and by comparing weld tensile strength to base material tensile strength.",
    author = "Petri Laakso and Saara Ruotsalainen and Otto Gerhard and Alexander Olowinski and Veli Kujanp{\"a}{\"a}",
    note = "Project code: 27712",
    year = "2013",
    language = "English",
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    Laakso, P, Ruotsalainen, S, Gerhard, O, Olowinski, A & Kujanpää, V 2013, Butt Welding of Transparent Polyamide (PA11) with 1.94um Fiber Laser. in Congress proceedings: ICALEO, 32nd International Congress on Applications of Lasers & Electro-Optics. Laser Institute of America, pp. 175-180, 32nd International Congress on Applications of Lasers & Electro-Optics, ICALEO, Miami, United States, 6/10/13.

    Butt Welding of Transparent Polyamide (PA11) with 1.94um Fiber Laser. / Laakso, Petri; Ruotsalainen, Saara; Gerhard, Otto; Olowinski, Alexander; Kujanpää, Veli.

    Congress proceedings: ICALEO, 32nd International Congress on Applications of Lasers & Electro-Optics. Laser Institute of America, 2013. p. 175-180.

    Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientific

    TY - GEN

    T1 - Butt Welding of Transparent Polyamide (PA11) with 1.94um Fiber Laser

    AU - Laakso, Petri

    AU - Ruotsalainen, Saara

    AU - Gerhard, Otto

    AU - Olowinski, Alexander

    AU - Kujanpää, Veli

    N1 - Project code: 27712

    PY - 2013

    Y1 - 2013

    N2 - Laser welding of polymeric products has been manufactured for more than 20 years. During that time polymer welding has developed a lot. In spite of that, there are still some limitations in applying the process to the industry. Typically welding has been made in lap joint configuration with black and clear parts because of optical properties of polymers. When using ~1?m lasers, the absorbing and transparent partners are needed. Previously visually transparent materials have been welded in lap joint configuration using infrared absorbers with ~1?m lasers. Recently new fiber lasers have introduced wavelengths which can have interesting optical properties for polymers. For example, 1.94?m laser has volume absorption through the whole material thickness on selected polyamide 11 (PA11) polymer material. This makes it possible to use butt joint for welding of polymeric components. When butt joint can be introduced, it will enable more possibilities in using polymer welding in the industry. A joint between two clear components without any additional absorbers can also be introduced with these new wavelengths and it will also decrease the costs and enable new applications when no infrared absorbing additives are needed or accepted. This paper presents results of butt welding of transparent PA11 using TWIST method with 1.94?m fiber laser. Weld quality is evaluated visually and by comparing weld tensile strength to base material tensile strength.

    AB - Laser welding of polymeric products has been manufactured for more than 20 years. During that time polymer welding has developed a lot. In spite of that, there are still some limitations in applying the process to the industry. Typically welding has been made in lap joint configuration with black and clear parts because of optical properties of polymers. When using ~1?m lasers, the absorbing and transparent partners are needed. Previously visually transparent materials have been welded in lap joint configuration using infrared absorbers with ~1?m lasers. Recently new fiber lasers have introduced wavelengths which can have interesting optical properties for polymers. For example, 1.94?m laser has volume absorption through the whole material thickness on selected polyamide 11 (PA11) polymer material. This makes it possible to use butt joint for welding of polymeric components. When butt joint can be introduced, it will enable more possibilities in using polymer welding in the industry. A joint between two clear components without any additional absorbers can also be introduced with these new wavelengths and it will also decrease the costs and enable new applications when no infrared absorbing additives are needed or accepted. This paper presents results of butt welding of transparent PA11 using TWIST method with 1.94?m fiber laser. Weld quality is evaluated visually and by comparing weld tensile strength to base material tensile strength.

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    Laakso P, Ruotsalainen S, Gerhard O, Olowinski A, Kujanpää V. Butt Welding of Transparent Polyamide (PA11) with 1.94um Fiber Laser. In Congress proceedings: ICALEO, 32nd International Congress on Applications of Lasers & Electro-Optics. Laser Institute of America. 2013. p. 175-180