INVESTIGADORES
FRONTINI patricia Maria
artículos
Título:
Determination of impact fracture toughness of polyethylene using arc-shaped specimens
Autor/es:
J. NIGLIA; A. CISILINO; R. SELTZER; P. FRONTINI
Revista:
ENGINEERING FRACTURE MECHANICS
Editorial:
PERGAMON-ELSEVIER SCIENCE LTD
Referencias:
Lugar: Amsterdam; Año: 2002 p. 1391 - 1399
ISSN:
0013-7944
Resumen:
This paper describes a methodology for the determination of the impact radial fracture toughness, GIC, of cylindricalpolymeric molded parts using arc-shaped specimens. The proposed methodology is an extension of the ISO/DIS 17281Standard which states that for brittle behavior, a basically linear relationship exits between the fracture energy, U; andthe energy calibration factor, /. This relationship allows calculating the critical strain energy release rate from the slopeof the U vs. / plot. An expression for the energy calibration factor, /, for the arc-shaped specimen is proposed in thiswork, by combining tabulated functions and finite element results. The methodology is applied to test high densitypolyethylene arc-shaped specimens taken from cylinder walls.
