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A new fixture for fracture tests under mixed mode I/II/III loading
Author(s) -
Razavi Nima,
Berto Filippo
Publication year - 2019
Publication title -
fatigue and fracture of engineering materials and structures
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.887
H-Index - 84
eISSN - 1460-2695
pISSN - 8756-758X
DOI - 10.1111/ffe.13033
Subject(s) - fixture , materials science , consistency (knowledge bases) , finite element method , polymethyl methacrylate , shear (geology) , composite material , fracture (geology) , mixed mode , structural engineering , ultimate tensile strength , tension (geology) , mode (computer interface) , tensile testing , engineering , polymer , mathematics , computer science , mechanical engineering , geometry , operating system
In this paper, a new loading device for general mixed mode I/II/III fracture tests is designed and recommended. Finite element analyses are conducted on the proposed apparatus to evaluate the fracture parameters of the tested samples under various mixed mode loading conditions. The numerical results revealed that the designed loading fixture can generate wide varieties of mode mixities from pure tensile mode to pure in‐plane and out‐of‐plane shear modes. The accuracy of the proposed fixture is evaluated by conducting a wide range of fracture tests on compact tension shear (CTS) specimens made of polymethyl methacrylate (PMMA). The experimental results are then compared with the theoretical predictions obtained by the Richard criterion. A good consistency is observed between the experimental results and theoretical predictions.