Inhaltszusammenfassung

Ultrasonic metal welding methods were used to realise aluminium alloy/carbon fibre reinforced polymer (CFRP)-joints. Important steps of the ultrasonic welding process are the softening and displacing of the polymer matrix out of the welding zone by the ultrasonic oscillation of the welding tool. As a result a direct contact between the load bearing carbon fibres of the CFRP and the aluminium sheets can develop. By using scanning electron microscopy (SEM) it was possible to describe the occurr...Ultrasonic metal welding methods were used to realise aluminium alloy/carbon fibre reinforced polymer (CFRP)-joints. Important steps of the ultrasonic welding process are the softening and displacing of the polymer matrix out of the welding zone by the ultrasonic oscillation of the welding tool. As a result a direct contact between the load bearing carbon fibres of the CFRP and the aluminium sheets can develop. By using scanning electron microscopy (SEM) it was possible to describe the occurring bonding mechanisms in detail. Up to now tensile shear strengths of about 30 MPa were realised in the case of AA5754/CF-PA66-joints. The short welding time of less than four seconds and welding temperatures below 400 °C are further important advantages of the ultrasonic metal welding process. Application fields can be seen in the automotive industry for lightweight structures or in the aircraft industry for construction elements of the fuselage or the aerofoil.» weiterlesen» einklappen

Autoren

Klassifikation

DFG Fachgebiet:
Materialwissenschaft

DDC Sachgruppe:
Ingenieurwissenschaften