INVESTIGADORES
STOCCHI ariel Leonardo
artículos
Título:
Effect of consolidation Degree on the Fracture Failure Behavior of Self-Reinforced Polypropylene Composites as Assessed by acoustic emission
Autor/es:
IZER ANDRAS; ARIEL STOCCHI; TAMÁS BARANY; VALERIA PETTARIN; CELINA BERNAL; TIBOR CZIGANY
Revista:
POLYMER ENGINEERING AND SCIENCE
Editorial:
JOHN WILEY & SONS INC
Referencias:
Lugar: NUEVA JERSEY; Año: 2010 vol. 50 p. 2106 - 2113
ISSN:
0032-3888
Resumen:
In this work, the fracture and failure behavior of selfreinforced
polypropylene composites (SRPPC) was
studied. As reinforcement woven fabric, whereas as
matrix materials a and b crystal forms of isotactic polypropylene
(PP) homopolymer and random PP copolymer
(with ethylene) were used. Composite sheets were
produced by a film-stacking method and compression
molded for constant holding time and at constant pressure
but at different processing temperatures to obtain
SRPPC sheets with different consolidation quality. The
failure behavior of tensile specimens was assessed by
the acoustic emission (AE) technique and the typical
failure behavior was deduced for the differently consolidated
composites. Both the number of AE events
and the shape of the cumulative AE events versus deformation
curve depend on the adhesion between
phases. Correlations between the dominant failure
mechanisms and AE events amplitude for model specimens
were established which can be used to monitor
the damage growth process in SRPPCs. POLYM. ENG.
SCI., 00:000000, 2010. ª2010 Society of Plastics Engineers