Results 41 to 50 of about 165,542 (311)

Calculation and Analysis of Crack Stress Intensity Factor and J Integral of Helical Gear

open access: yesJixie chuandong, 2020
The distribution of stress intensity factor and J integral of helical gear with three-dimensional crack under different initial crack parameters is studied. The finite element software is used to analyze the helical gear with initial crack.
Guangyao Sun   +2 more
doaj  

Evaluation of Fatigue Crack Front Shape for a Specimen with Finite Thickness

open access: yesMATEC Web of Conferences, 2015
Two-dimensional elastic or elasto-plastic models dominate the current fatigue crack growth assessment and life prediction procedures for plate components with through-the-thickness cracks.
He Zhuang   +2 more
doaj   +1 more source

Fatigue assessment and crack propagation of floorbeam cutout in orthotropic bridge decks

open access: yesMaterials & Design, 2023
Based on the fatigue cracking of floorbeam cutout in a bridge, the field testing under random traffic flows was firstly conducted to investigate the fatigue crack initiation, and then a multi-scale numerical model, based on extended finite element method
Ze Xiang, Zhiwen Zhu, Xinbin Lei
doaj   +1 more source

Survey of fracture toughness test methods [PDF]

open access: yes, 1968
Comprehensive survey presents current methods of fracture toughness testing that are based on linear elastic fracture mechanics. General principles of the basic two dimensional crack stress field model are discussed in relation to real three dimensional ...
Brown, W. F., Jr.   +2 more
core   +1 more source

Colorectal cancer‐derived FGF19 is a metabolically active serum biomarker that exerts enteroendocrine effects on mouse liver

open access: yesMolecular Oncology, EarlyView.
Meta‐transcriptome analysis identified FGF19 as a peptide enteroendocrine hormone associated with colorectal cancer prognosis. In vivo xenograft models showed release of FGF19 into the blood at levels that correlated with tumor volumes. Tumoral‐FGF19 altered murine liver metabolism through FGFR4, thereby reducing bile acid synthesis and increasing ...
Jordan M. Beardsley   +5 more
wiley   +1 more source

THE THREE DIMENSIONAL CURVED ELASTICITY-PLASTICITY CRACK TIP OPENING DISPLACEMENT UNDER QUASI-STATIC LOAD

open access: yesJixie qiangdu, 2019
In this article, three dimensional elastic-plastic curved crack tip opening displacement under quasi-static loads has been mainly studied, and three dimensional curved crack tip opening displacement has been calculated as a practical application of a ...
YANG DaPeng   +4 more
doaj  

Quasistatic evolution of a brittle thin film

open access: yes, 2006
This paper deals with the quasistatic crack growth of a homogeneous elastic brittle thin film. It is shown that the quasistatic evolution of a three-dimensional cylinder converges, as its thickness tends to zero, to a two-dimensional quasistatic ...
Babadjian, Jean-Francois
core   +3 more sources

Buoyancy-driven crack propagation: the limit of large fracture toughness [PDF]

open access: yes, 2007
We study steady vertical propagation of a crack filled with buoyant viscous fluid through an elastic solid with large effective fracture toughness. For a crack fed by a constant flux Q, a non-dimensional fracture toughness K=Kc/(3μQm3/2)1/4 describes the
Lister, J.R., Roper, S.M.
core   +1 more source

Identification of serum protein biomarkers for pre‐cancerous lesions associated with pancreatic ductal adenocarcinoma

open access: yesMolecular Oncology, EarlyView.
This work identified serum proteins associated with pancreatic epithelial neoplasms (PanINs) and early‐stage PDAC. Proteomics screens assessed genetically engineered mice with abundant PanINs, KPC mice (Lox‐STOP‐Lox‐KrasG12D/+ Lox‐STOP‐Lox‐Trp53R172H/+ Pdx1‐Cre) before PDAC development and also early‐stage PDAC patients (n = 31), compared to benign ...
Hannah Mearns   +10 more
wiley   +1 more source

PLASTICITY AREA AT THE THREE DIMENSIONAL CURVED ELASTICITY-PLASTICITY CRACK TIP UNDER QUASI-STATIC LOAD

open access: yesJixie qiangdu, 2018
In this article,three dimensional elastic-plastic curved crack tip plasticity area under quasi-static loads has been mainly studied,and three dimensional curved crack tip plasticity area has been calculated as a practical application of a second order ...
YANG DaPeng   +3 more
doaj  

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