Details
| Original language | English |
|---|---|
| Article number | S29004 |
| Journal | Journal of Laser Applications |
| Volume | 27 |
| Issue number | S2 |
| Publication status | Published - 26 Feb 2015 |
| Externally published | Yes |
| Event | 33rd International Congress on Applications of Lasers and Electro-Optics, ICALEO 2014 - San Diego, United States Duration: 19 Oct 2014 → 23 Oct 2014 |
Abstract
Thermoplastic composite structures based on continuous carbon fiber reinforcements are gaining importance in many industrial applications. These comprise basic technical functions as well as high-performance applications in the aerospace sector. Welding techniques are applicable for composites based on thermoplastic matrix materials in contrast to thermoset systems. In this context, welding steps are not limited to the joining of carbon fiber reinforced plastic (CFRP) parts among themselves, but extend to the connection of various components, consisting of unreinforced and glass fiber reinforced thermoplastics to CFRP components. In this work, a laser transmission welding process is evaluated with respect to the influence of the carbon fiber reinforcement within the laser absorbing part as well as the glass fiber reinforcement within the laser transparent part on the weld seam formation. Thermoplastic base material nylon (PA 6.6) and polyphenylene sulfide are used. By applying two different strategies, contour and quasisimultaneous welding, the influence of continuous fiber reinforced composites on the welding process is studied. Significant differences to the process characteristics known from the joining of unreinforced thermoplastics emerge from the fiber reinforcement inducing high thermal conductivity and fluctuating absorption properties for the laser wavelength, resulting in an essentially altered plastification performance which is directly mirrored in the inhomogeneous formation of the weld seam structure.
Keywords
- CFRP, composites, laser welding, thermoplastics
ASJC Scopus subject areas
- Materials Science(all)
- Electronic, Optical and Magnetic Materials
- Physics and Astronomy(all)
- Atomic and Molecular Physics, and Optics
- Engineering(all)
- Biomedical Engineering
- Physics and Astronomy(all)
- Instrumentation
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In: Journal of Laser Applications, Vol. 27, No. S2, S29004, 26.02.2015.
Research output: Contribution to journal › Conference article › Research › peer review
}
TY - JOUR
T1 - Advanced laser welding of high-performance thermoplastic composites
AU - Jaeschke, Peter
AU - Wippo, Verena
AU - Suttmann, Oliver
AU - Overmeyer, Ludger
PY - 2015/2/26
Y1 - 2015/2/26
N2 - Thermoplastic composite structures based on continuous carbon fiber reinforcements are gaining importance in many industrial applications. These comprise basic technical functions as well as high-performance applications in the aerospace sector. Welding techniques are applicable for composites based on thermoplastic matrix materials in contrast to thermoset systems. In this context, welding steps are not limited to the joining of carbon fiber reinforced plastic (CFRP) parts among themselves, but extend to the connection of various components, consisting of unreinforced and glass fiber reinforced thermoplastics to CFRP components. In this work, a laser transmission welding process is evaluated with respect to the influence of the carbon fiber reinforcement within the laser absorbing part as well as the glass fiber reinforcement within the laser transparent part on the weld seam formation. Thermoplastic base material nylon (PA 6.6) and polyphenylene sulfide are used. By applying two different strategies, contour and quasisimultaneous welding, the influence of continuous fiber reinforced composites on the welding process is studied. Significant differences to the process characteristics known from the joining of unreinforced thermoplastics emerge from the fiber reinforcement inducing high thermal conductivity and fluctuating absorption properties for the laser wavelength, resulting in an essentially altered plastification performance which is directly mirrored in the inhomogeneous formation of the weld seam structure.
AB - Thermoplastic composite structures based on continuous carbon fiber reinforcements are gaining importance in many industrial applications. These comprise basic technical functions as well as high-performance applications in the aerospace sector. Welding techniques are applicable for composites based on thermoplastic matrix materials in contrast to thermoset systems. In this context, welding steps are not limited to the joining of carbon fiber reinforced plastic (CFRP) parts among themselves, but extend to the connection of various components, consisting of unreinforced and glass fiber reinforced thermoplastics to CFRP components. In this work, a laser transmission welding process is evaluated with respect to the influence of the carbon fiber reinforcement within the laser absorbing part as well as the glass fiber reinforcement within the laser transparent part on the weld seam formation. Thermoplastic base material nylon (PA 6.6) and polyphenylene sulfide are used. By applying two different strategies, contour and quasisimultaneous welding, the influence of continuous fiber reinforced composites on the welding process is studied. Significant differences to the process characteristics known from the joining of unreinforced thermoplastics emerge from the fiber reinforcement inducing high thermal conductivity and fluctuating absorption properties for the laser wavelength, resulting in an essentially altered plastification performance which is directly mirrored in the inhomogeneous formation of the weld seam structure.
KW - CFRP
KW - composites
KW - laser welding
KW - thermoplastics
UR - http://www.scopus.com/inward/record.url?scp=84943602149&partnerID=8YFLogxK
U2 - 10.2351/1.4906379
DO - 10.2351/1.4906379
M3 - Conference article
AN - SCOPUS:84943602149
VL - 27
JO - Journal of Laser Applications
JF - Journal of Laser Applications
SN - 1042-346X
IS - S2
M1 - S29004
T2 - 33rd International Congress on Applications of Lasers and Electro-Optics, ICALEO 2014
Y2 - 19 October 2014 through 23 October 2014
ER -