INVESTIGADORES
FRONTINI patricia Maria
artículos
Título:
Fracture Toughness Determination of ABS Polymers Using the J-method
Autor/es:
C. BERNAL; R. HERRERA; P. FRONTINI
Revista:
POLYMER TESTING
Editorial:
ELSEVIER SCI LTD
Referencias:
Lugar: Amsterdam; Año: 1992 p. 271 - 288
ISSN:
0142-9418
Resumen:
The suitability of J-R curve fitting methods proposed by ASTM E813-81 and E 813-87 metal standards in fitting ABS J-R curves isdiscussed. Tests were carried out at room temperature on one commercialgrade ABS resin in three-point bending.Specimens were precracked with a razor blade and tests wereperformed over a X20 range of crosshead rate in the quasistatic regime.Specimens of different geometric relationships (B/W, a/W, smoothspecimens of different thickness, and side-grooved specimens) wereassayed.The two ASTM fitting procedures were also checked against datareported by other authors for other ABS type resins.Model appropriateness was checked by statistical analysis.Results appeared to be geometrically independent for deeply notchedspecimens. No significant variation in the J-R curve was found forchanges in the displacement rate. Both J-R curve fittings appeared to beadequate.The ASTM E 813-87 procedure led to less conservative criticalinitiation J1c values.
