My. He et al., THE GEOMETRY-EFFECTS FOR STRESS INTENSITY FACTOR OF SANDWICH SPECIMENFOR MEASURING INTERFACIAL FRACTURE-TOUGHNESS, International journal of fracture, 59(4), 1993, pp. 377-385
The interfacial stress intensity factors for three types of sandwich s
pecimens: the single edge crack tensile specimen, the three point bend
specimen and the four point shear specimen were obtained by the finit
e element analysis and compared with the asymptotic solutions. The res
ults show that the geometric effect for mode II specimen is larger tha
n mode I specimen. The limit curves for geometry factor equal to 1.05
were obtained to indicate the usable range of validity of the asymptot
ic solution.