INVESTIGADORES
PETTARIN valeria
congresos y reuniones científicas
Título:
Impact performance of PE butt fusion welded joints
Autor/es:
BETIANA ACHA; VALERIA PETTARIN; PATRICIA FRONTINI
Lugar:
Cincinnatti, Ohio, USA
Reunión:
Conferencia; Annual Technical Conference of the Society of Plastics Engineers ANTEC 2007; 2007
Resumen:
Through this work the rapid crack propagation of PE
butt-fusion welded joints was evaluated with impact tests
performed on sharp notched specimens at varying
temperature and test velocity. The effect of test velocity
was studied by means of the impact strength at 20ºC and
1, 2 and 3.7 m/s. The effect of test temperature was
assessed at 1 m/s where dynamic effects are small and
allow the application of Fracture Mechanics techniques.
The Impact Toughness, Jc, was determined in a wide
range of temperature (60 to 20ºC). Complementary, SEM
was carried out on fracture surfaces to elucidate the
deformation mechanisms acting. It was found that
independent of the testing conditions, they were only
slightly inhibited in the welded samples suggesting that
fracture propagation was practically not affected by the
welding procedure.Jc, was determined in a wide
range of temperature (60 to 20ºC). Complementary, SEM
was carried out on fracture surfaces to elucidate the
deformation mechanisms acting. It was found that
independent of the testing conditions, they were only
slightly inhibited in the welded samples suggesting that
fracture propagation was practically not affected by the
welding procedure.