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A new data reduction scheme for mode I wood fracture characterization using the double cantilever beam test
Authors:M.F.S.F. de Moura  J.J.L. Morais
Affiliation:a Faculdade de Engenharia da Universidade do Porto, Departamento de Engenharia Mecânica e Gestão Industrial, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal
b CITAB/UTAD, Departamento de Engenharias, Quinta de Prados, 5000-911 Vila Real, Portugal
Abstract:This paper describes experimental and numerical studies on double cantilever beam test applied to fracture characterization of wood in mode I. A new data reduction scheme based on the beam theory and specimen compliance is proposed in order to overcome the difficulties inherent to crack monitoring during propagation. A cohesive damage model adapted to wood is used to simulate the test. The cohesive properties are evaluated using an inverse method based on a developed Genetic Algorithm through an optimisation strategy. The results demonstrate the effectiveness of the proposed methodology as a suitable data reduction scheme for the double cantilever beam test.
Keywords:Mode I   Double cantilever beam test   Fracture toughness   Wood   Cohesive model
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