Results 151 to 160 of about 1,592 (205)
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Transformation of CTOD δ5 to CTOD δBS and J-integral for 3PB- and CT-specimens
Engineering Fracture Mechanics, 1999Abstract A two-region empirical formula is proposed for the transformation of crack tip opening displacement (CTOD) δ 5 to the standard CTOD δ BS and the J -integral. Coefficients of the approximation are fitted to data sets of three-dimensional elastic–plastic finite element solutions for plane side and side-grooved three-point bend and ...
G P Nikishkov +2 more
exaly +2 more sources
Theoretical and Applied Fracture Mechanics, 2019 T1, Q1 (33/136 Mechanics; IF 2019 = 3.021)Crack tip opening displacement (CTOD) was measured using digital image correlation (DIC) and resolved into elastic and plastic CTOD components via an offset compliance technique.
J M Vasco-Olmo +2 more
exaly +4 more sources
Engineering Fracture Mechanics, 2021 This paper proposes a new estimation formulation for CTOD fracture parameter for clamped SE(T) geometry. Based upon the plastic-hinge model, CTOD is defined using the crack opening displacements (COD) measured at two locations along the crack flanks of ...
Marcus Nathan Silvestre +2 more
exaly +2 more sources
A Proposal for Two Characteristic Ratios of ASTM-CTOD to BS-CTOD
Materials Science Forum, 2010There have been two different CTOD calculations, geometric CTOD calculation in BS7448 and J-based conversion in ASTM E1290 since the ASTM International revised E1290 in 2002, and it is useful to transform one CTOD into the other CTOD. In this study, analytical and experimental investigations into the ratio of ASTM E1290-CTOD to BS7448-CTOD were carried
Yoichi Kayamori +2 more
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Equivalent CTOD Ratio β for Engineering Assessment of CTOD Correction for Constraint Loss
Volume 1: Codes and Standards, 2008The critical CTOD δWP for structural components associated with plastic constraint loss in case of the brittle fracture over small-scale yielding condition can be corrected from CTOD fracture toughness δ by means of the “equivalent CTOD ratio β” defined as δ/δWP, which is based on the Weibull stress criterion. In this study, taking the case of specific
Mitsuru Ohata, Fumiyoshi Minami
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Measurement of CTOD along a surface crack by means of digital image correlation
Engineering Fracture Mechanics, 2019 The experimental measurement of fracture toughness and crack driving force are the main steps for the application of fracture mechanics methods in structural integrity assessment.
Kaveh Samadian +2 more
exaly +2 more sources
A Comparison Between BS7448-CTOD and ASTM E1290-CTOD in Linepipes
Volume 6: Materials Technology; C.C. Mei Symposium on Wave Mechanics and Hydrodynamics; Offshore Measurement and Data Interpretation, 2009ASTM E1290 previously used the plastic hinge model for the calculation of CTOD, but has changed its CTOD calculation to J-based conversion since 2002. In this study, the ratio of ASTM-CTOD to BS-CTOD was analytically predicted and experimentally evaluated in linepipes. It was demonstrated that the CTOD ratio changed according to CTOD itself, and took a
Yoichi Kayamori +2 more
openaire +1 more source
Proceedings of the 10th ACM international symposium on Mobility management and wireless access, 2012
Outlier detection is a well studied problem in various fields. The unique challenges of wireless sensor networks such as limited bandwidth, memory, energy, and unreliable communi- cation make this problem especially difficult. Sensors can detect outliers for a plethora of reasons and these reasons need to be inferred in real time.
Dylan McDonald +4 more
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Outlier detection is a well studied problem in various fields. The unique challenges of wireless sensor networks such as limited bandwidth, memory, energy, and unreliable communi- cation make this problem especially difficult. Sensors can detect outliers for a plethora of reasons and these reasons need to be inferred in real time.
Dylan McDonald +4 more
openaire +1 more source
CTOD estimates of surface cracked wide plates in bending—II. Level-3 CTOD method
Engineering Fracture Mechanics, 1991Abstract The Welding Institute Level-3 crack tip opening displacement (CTOD) method was expanded to be applicable to plane strain (Plane-strain Level-3 CTOD method). The definition of the reference strain is a major source of uncertainty in the application of the Level-3 CTOD method.
Fujikubo Masahiko +2 more
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Fatigue and Fracture of Engineering Materials and Structures, 2020 The plastic range of crack tip opening displacement (CTOD) has been used for the experimental characterisation of fatigue crack growth for 2024-T3 and 7050-T6 aluminium alloys using digital image correlation (DIC).
J M Vasco-Olmo +2 more
exaly +3 more sources