... Abstract In order to verify the structural integrity of power generation facilities, many fracture toughness tests are being performed on high-toughness materials, and efforts are being made to obtain reliable J-R curve. In particular, in the case of nuclear piping system to which Leak Before...

... on the CMOD data were also performed by finite element analyses (FEA) according to the proposed method. The J–R curves obtained for the plate specimens commonly showed similar behaviors of having significantly higher J for the small Δa range from 0 to about 2 mm than that for the compact tension (C(T...

... the stringent fracture toughness criteria and integrity must be verified through static J-R curve testing using the compliance method, one of the measurement techniques for fracture toughness. The measured and estimated values for the crack extension length during the test should also match, within a certain...

... of fracture toughness. Two different testing methods, slow rising displacement and incremental step loading testing, were used to generate J-R curves and determine the fracture toughness. The tests were performed at 40°F in air and simulated sea water (3.5 wt.% NaCl) with applied CP of −1050 mV SCE...

..., USA ABSTRACT: The J-integral resistance curve (or J-R curve) has been widely used as material property in fracture mechanics methods for structural integrity assessment. ASTM E1820 provides the standard fracture toughness test methods to measure JIc and J-R curves. The conventional J-R curve utilizes...

... testing. J -integral J-R curve experimental estimation fracture test ASTM E1820 Copyright © 2011 by ASME 1 Advances in Development of J-Integral Experimental Estimation, Testing and Standardization Xian-Kui Zhu Battelle Memorial Institute 505 King Avenue Columbus, Ohio 43201, USA...

... 14 01 2011 The J -integral resistance curve is the most important material property used in structural integrity assessment. ASTM E1820 is a commonly used fracture toughness test standard for measuring the critical value of J -integral at the onset of ductile fracture and J-R curve...

... 12 07 2010 The normalization method is adopted in this paper to determine J-R curves for X60 pipeline steel using single-edge notched tension (SENT) specimens. A resistance curve procedure associated with the normalization method is developed to estimate crack extension, calculate...

... 24 07 2009 Fracture toughness and J-R curves of ductile materials are often measured under the guidance of ASTM standard E1820 using the single specimen technique and the elastic unloading compliance method. For the standard single-edge notched bend [SENB] specimens, the load, load...

... selected based on similar triaxiality level as that of piping components, which are to be analysed. Present paper verifies the importance of stress triaxility while selecting the specimen J-R curve and discusses the extrapolation of specimen J-R curve. The applicability of the proposed numerical...

... cyclic loading and safe number of load cycles in the LBB assessment. Cyclic tearing Reverse cyclic loading LBB assessment J-R curve Proceedings of PVP2005 2005 ASME Pressure Vessels and Piping Division Conference Proceedings of PVP2005 2005 ASME Pressure Vessels and iping Division Conference...

... 04 08 2008 The crack tip opening displacements and angles (CTOD/CTOA) are calculated with finite element method based on the test data of a set of constraint-dependent J-R curves for A285 carbon steel. The values of the CTOD/CTOA are initially high at initiation, but rapidly decrease...