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Investigation on energy director-less ultrasonic welding of polyetherimide (PEI)- to epoxy-based composites. / Tsiangou, Eirini; Teixeira de Freitas, Sofia; Fernandez Villegas, Irene; Benedictus, Rinze.

In: Composites Part B: Engineering, Vol. 173, 107014, 15.09.2019.

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@article{72b6f8225ae74221bb60550dd98c6f85,
title = "Investigation on energy director-less ultrasonic welding of polyetherimide (PEI)- to epoxy-based composites",
abstract = "In ultrasonic welding of thermoplastic composites an energy director (ED) (i.e. neat thermoplastic film), is used between the two adherends to be welded, to promote frictional and viscoelastic heating. For welding of thermoset composites (TSC), a thermoplastic coupling layer is co-cured on the surface to be welded as typical procedure to make the TSC “weldable”. This study focuses on investigating whether a polyetherimide (PEI) coupling layer by itself has the potential to promote heat generation during ultrasonic welding of CF/epoxy and CF/PEI samples, without the need for a separate ED, and if so, what thickness should that coupling layer be. The main findings were that welding without a loose ED resulted in overheating of the CF/PEI adherend and/or coupling layer due to the inability of the latter to promote heat generation efficiently. However, welding of CF/epoxy and CF/PEI samples with the use of a loose ED resulted in high-strength welds.",
keywords = "Joints/joining, Polymer-matrix composites (PMCs), Thermoplastic resin, Thermosetting resin",
author = "Eirini Tsiangou and {Teixeira de Freitas}, Sofia and {Fernandez Villegas}, Irene and Rinze Benedictus",
year = "2019",
month = "9",
day = "15",
doi = "10.1016/j.compositesb.2019.107014",
language = "English",
volume = "173",
journal = "Composites Part B: Engineering",
issn = "1359-8368",
publisher = "Elsevier",

}

RIS

TY - JOUR

T1 - Investigation on energy director-less ultrasonic welding of polyetherimide (PEI)- to epoxy-based composites

AU - Tsiangou, Eirini

AU - Teixeira de Freitas, Sofia

AU - Fernandez Villegas, Irene

AU - Benedictus, Rinze

PY - 2019/9/15

Y1 - 2019/9/15

N2 - In ultrasonic welding of thermoplastic composites an energy director (ED) (i.e. neat thermoplastic film), is used between the two adherends to be welded, to promote frictional and viscoelastic heating. For welding of thermoset composites (TSC), a thermoplastic coupling layer is co-cured on the surface to be welded as typical procedure to make the TSC “weldable”. This study focuses on investigating whether a polyetherimide (PEI) coupling layer by itself has the potential to promote heat generation during ultrasonic welding of CF/epoxy and CF/PEI samples, without the need for a separate ED, and if so, what thickness should that coupling layer be. The main findings were that welding without a loose ED resulted in overheating of the CF/PEI adherend and/or coupling layer due to the inability of the latter to promote heat generation efficiently. However, welding of CF/epoxy and CF/PEI samples with the use of a loose ED resulted in high-strength welds.

AB - In ultrasonic welding of thermoplastic composites an energy director (ED) (i.e. neat thermoplastic film), is used between the two adherends to be welded, to promote frictional and viscoelastic heating. For welding of thermoset composites (TSC), a thermoplastic coupling layer is co-cured on the surface to be welded as typical procedure to make the TSC “weldable”. This study focuses on investigating whether a polyetherimide (PEI) coupling layer by itself has the potential to promote heat generation during ultrasonic welding of CF/epoxy and CF/PEI samples, without the need for a separate ED, and if so, what thickness should that coupling layer be. The main findings were that welding without a loose ED resulted in overheating of the CF/PEI adherend and/or coupling layer due to the inability of the latter to promote heat generation efficiently. However, welding of CF/epoxy and CF/PEI samples with the use of a loose ED resulted in high-strength welds.

KW - Joints/joining

KW - Polymer-matrix composites (PMCs)

KW - Thermoplastic resin

KW - Thermosetting resin

UR - http://www.scopus.com/inward/record.url?scp=85067825883&partnerID=8YFLogxK

U2 - 10.1016/j.compositesb.2019.107014

DO - 10.1016/j.compositesb.2019.107014

M3 - Article

VL - 173

JO - Composites Part B: Engineering

T2 - Composites Part B: Engineering

JF - Composites Part B: Engineering

SN - 1359-8368

M1 - 107014

ER -

ID: 54986705