Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/91274
Title: A CMOD-based hybrid approach to determine fracture resistance curve
Authors: Yang, W.
Qian, X. 
Keywords: Fracture resistance
Hybrid approach
J-R curve
Mixed-mode fracture
Issue Date: 2013
Citation: Yang, W.,Qian, X. (2013). A CMOD-based hybrid approach to determine fracture resistance curve. 13th International Conference on Fracture 2013, ICF 2013 4 : 3168-3177. ScholarBank@NUS Repository.
Abstract: This study proposes a hybrid approach that relies both on the numerically computed and on the experimentally measured load (P) versus the crack-mouth opening displacement (CMOD) relationships to derive the fracture resistance curve (J-R curve) for the mixed-mode I and II fracture specimen. The CMOD-based hybrid approach utilizes a single experimental specimen with a growing crack and multiple finite element (FE) models, each with a different crack depth. The experimental procedure measures the P-CMOD curve from a standard fracture specimen with a growing crack. The intersections between the experimental P-CMOD curve and the numerical P-CMOD curves from multiple FE models dictate the CMOD levels to compute the strain energy (U). This approach simplifies the J-R curve test for the single-edge-notched bend, SE(B), specimen by eliminating the multiple unloading and reloading procedures in determining the variation of the compliance during the test. This method also provides an alternative simple measurement of the J-R curves for mixed-mode I and II specimens. The validation procedure shows accurate predictions of the J-R curves for both SE(B) specimens and mixed-mode I and II specimens. Copyright © (2013) by International Conference on Fracture.
Source Title: 13th International Conference on Fracture 2013, ICF 2013
URI: http://scholarbank.nus.edu.sg/handle/10635/91274
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