Results 31 to 40 of about 3,307 (180)

Study on the Influence of the Gurson–Tvergaard–Needleman Damage Model on the Fatigue Crack Growth Rate

Metals, 2021
The fatigue crack growth (FCG) process is usually accessed through the stress intensity factor range, ΔK, which has some limitations. The cumulative plastic strain at the crack tip has provided results in good agreement with the experimental observations.
Edmundo R. Sérgio, Fernando V. Antunes, Diogo M. Neto, Micael F. Borges   +3 more
doaj   +1 more source

Simulation of crack closure effect on cracked beam vibrations

Engineering Fracture Mechanics
Vibrations of beams containing cracks are usually investigated by using open or breathing crack models. Neither one of these approaches considers the plasticity induced crack closure (PICC) phenomena which occurs in fatigue crack growth. In this study, PICC is integrated into the vibration analysis of a cracked beam.
Dağhan Günhan, Bülent Acar, Suat Kadıoğlu   +2 more
openaire   +2 more sources

Study on Fracture Behavior of GH4169 Superalloy Considering Crack Closure Effect: Combining Numerical Modeling and BSL 3D DIC

Applied Sciences
As a critical aerospace structural material, the fatigue crack propagation behavior and fatigue life of the nickel-based GH4169 superalloy are directly related to the service safety of engineering components.
Zechang Li, Bin Kuang, Bin Wang, Xing Sun, Xinlong Yang, Bo Liu, Qihong Fang, Huimin Xie, Wei He, Yanhuai Ding   +9 more
doaj   +1 more source

Experimental and Numerical Study on Crack Propagation of Cracked Plates under Low Cycle Fatigue Loads

Journal of Marine Science and Engineering, 2023
The traditional study on fatigue strength for ship structures usually focuses on high cycle fatigue and ignores low cycle fatigue. However, given the recent trend towards large-scale ship development, the stress and deformation experienced by ship ...
Dong Qin, Xu Geng, Zhao Jie, Hu Yaoyu
doaj   +1 more source

Effects of closure on the detection probability of fatigue cracks [PDF]

The Journal of the Acoustical Society of America, 1981
Fatigue cracks often can be (more or less) tightly closed. Under such “closure” conditions the crack may be transparent to ultrasound and actually form electrical contact between fracture surfaces, diminishing the eddy current response with respect to the fully open crack.
O. Buck, B. J. Skillings
openaire   +1 more source

Reciprocal control of viral infection and phosphoinositide dynamics

FEBS Letters, EarlyView.
Phosphoinositides, although scarce, regulate key cellular processes, including membrane dynamics and signaling. Viruses exploit these lipids to support their entry, replication, assembly, and egress. The central role of phosphoinositides in infection highlights phosphoinositide metabolism as a promising antiviral target.
Marie Déborah Bancilhon, Bruno Mesmin
wiley   +1 more source

Numerical simulation of fatigue crack propagation with plasticity-induced crack closure under different loading conditions (Development of direct numerical simulation using S-version FEM and simplified method)

Nihon Kikai Gakkai ronbunshu, 2019
This paper presents two numerical simulation methods for fatigue crack propagations with the plasticity-induced crack closure under arbitrary cyclic loading conditions.
Yuichi SHINTAKU, Yuto SHINOZAKI, Takaki FUJIWARA, Akiyuki TAKAHASHI, Masanori KIKUCHI   +4 more
doaj   +1 more source

Spatiotemporal and quantitative analyses of phosphoinositides – fluorescent probe—and mass spectrometry‐based approaches

FEBS Letters, EarlyView.
Fluorescent probes allow dynamic visualization of phosphoinositides in living cells (left), whereas mass spectrometry provides high‐sensitivity, isomer‐resolved quantitation (right). Their synergistic use captures complementary aspects of lipid signaling. This review illustrates how these approaches reveal the spatiotemporal regulation and quantitative
Hiroaki Kajiho, Shin Morioka, Junko Sasaki, Takehiko Sasaki   +3 more
wiley   +1 more source

Predicting creep-fatigue crack growth rates in Alloy 709 using finite element simulations of plasticity and creep-induced crack closure

MATEC Web of Conferences, 2018
This paper reports on a computational study and experimental validation of creep-fatigue crack growth rates at high temperature in two structural materials.
Ramirez Jose, Potirniche Gabriel P., Pugesek Henry, Shaber Nicholas, Taylor Martin, Stephens Robert, Charit Indrajit   +6 more
doaj   +1 more source

Protein pyrophosphorylation by inositol pyrophosphates — detection, function, and regulation

FEBS Letters, EarlyView.
Protein pyrophosphorylation is an unusual signaling mechanism that was discovered two decades ago. It can be driven by inositol pyrophosphate messengers and influences various cellular processes. Herein, we summarize the research progress and challenges of this field, covering pathways found to be regulated by this posttranslational modification as ...
Sarah Lampe, Tanmay Kumar Mohanty, Rashna Bhandari, Dorothea Fiedler   +3 more
wiley   +1 more source