Results 271 to 280 of about 4,555,706 (361)

Crack opening displacements of Vickers indentation cracks

Engineering Fracture Mechanics, 2005
Vickers indentation cracks are an appropriate tool to determine the crack-tip toughness KI0 and, possibly, the bridging relation of ceramics with an R-curve behaviour from the total crack opening displacements. Two contributions to the total crack opening displacement field are addressed. First, the residual stresses occurring in the uncracked body are
Fett, T., Kunga Njiwa, A. B., Rödel, J.
openaire   +2 more sources

Crack Opening Geometry in Cracked Composite Laminates

International Journal of Damage Mechanics, 1997
Talreja and coworkers have reported brittle and tough polymer matrix composites to show different cross-ply laminate stiffness reductions due to transverse cracks, despite very similar elastic properties. Studies of crack opening displacement (COD) in [0,,,90,] laminates may help in solution of this problem.
J. Varna, L. A. Berglund, A. Krasnikovs, A. Chihalenko   +3 more
openaire   +1 more source

Imaging of three-dimensional crack open/closed distribution by nonlinear ultrasonic phased array based on fundamental wave amplitude difference

Japanese Journal of Applied Physics, 2020
We investigated the imaging capability of fixed-voltage fundamental wave amplitude difference (fixed-voltage FAD), which is one of the nonlinear ultrasonic phased array imaging techniques, for three-dimensional crack open/closed distribution.
Y. Ohara, Hiromichi Nakajima, S. Haupert, T. Tsuji, T. Mihara   +4 more
semanticscholar   +1 more source

Crack opening analysis of complex cracked pipes

International Journal of Fracture, 2001
Based on the reference stress approach, two sets of the crack opening displacement (COD) estimation equations are proposed for a complex cracked pipe. One set of equations can be used for the case when full stress-strain data are known, and the other for the case when only yield and tensile strengths are available.
Yun-Jae Kim, Nam-Su Huh, Young-Jin Kim
openaire   +1 more source

Cracking the Kelipot Open

Jung Journal, 2021
What was creation             firefall? fireball?               a flash?          a cascade of liquid fire like molten ore?
openaire   +1 more source

Numerical study of corrosion crack opening

Structure and Infrastructure Engineering, 2008
To determine the reliability of reinforced concrete structures based on visual inspection of corroding cracks on the surfaces of structures is of great interest. In the present study, models for the deterioration of reinforced concrete structures are presented with special emphasis on a model for the corrosion crack opening. Experiments and theoretical
Thoft-Christensen, Palle, Frandsen, Henrik Lund, Svensson, Staffan   +2 more
openaire   +2 more sources

Fine-tuning vision foundation model for crack segmentation in civil infrastructures

Construction and Building Materials, 2023
Large-scale foundation models have become the mainstream deep learning method, while in civil engineering, the scale of AI models is strictly limited. In this work, a vision foundation model is introduced for crack segmentation.
K. Ge, Chen Wang, Yutao Guo, Yansong Tang, Zhenzhong Hu   +4 more
semanticscholar   +1 more source

Cracking Open Window of Opportunity Trials

Journal of Clinical Oncology, 2012
Despite an increase in investment, only one in every 10 new molecular therapeutic agents that enters clinical development receives US Food and Drug Administration approval. The sequential phase I/II/III model that was developed in the 1960s for cytotoxic chemotherapy remains a common pathway for drug development, with anticancer agents often being ...
Kevin, Kalinsky, Dawn L, Hershman
openaire   +2 more sources

Integrated APC-GAN and AttuNet Framework for Automated Pavement Crack Pixel-Level Segmentation: A New Solution to Small Training Datasets

IEEE transactions on intelligent transportation systems (Print), 2023
Pavement crack segmentation using deep learning methods can improve crack segmentation accuracy, but in many cases the training dataset is lacking or uneven, making it insufficient to train an accurate segmentation model.
Tianjie Zhang, Donglei Wang, A. Mullins, Yang Lu   +3 more
semanticscholar   +1 more source

A crack opening displacement approach to crack patching

Engineering Fracture Mechanics, 1980
Abstract The results of a numerical investigation into crack patching indicate that a modified form of the crack opening displacement approach may be useful in estimating the effect that fibre composite patches have on cracks in thin sheets.
R. Jones, R.J. Callinan
openaire   +1 more source