Fictitious crack modelling of polymethyl methacrylate porous material

E.R.A. Jimenez Pique, L.J.M.G. Dortmans, G. With, de

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8 Citations (Scopus)


Fracture tests were performed on a granular PMMA porous material used as a mold for white ware castings. Two types of sample geometry (single-edge notch beam and wedge opening load) and two types of environment (dry at room temp. and in water at 45 DegC) were used and the force-displacement curves were measured. The fictitious crack model with a bilinear softening curve was used to fit the exptl. data resulting in an excellent agreement for all types of test. From the values of the fracture energy it is concluded that the measurement of the fracture toughness cannot be performed through a max. peak load expt. for the given sample size and geometry. A comparison of the fracture surfaces under both conditions is made and an explanation for the different types of morphol. is proposed. [on SciFinder (R)]
Original languageEnglish
Pages (from-to)217-227
JournalMaterials Science and Engineering A
Issue number1-2
Publication statusPublished - 2002


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