Results 31 to 40 of about 42,379 (316)

SIMULATION OF FATIGUE CRACK INITIATION LIFE OF TC4 TITANIUM ALLOY BASED ON ITS MESOSCOPIC PROPERTIES

Jixie qiangdu, 2021
This paper presents that the prediction model of fatigue crack initiation life of TC4 titanium alloy,and the feasibility of the model in predicting the fatigue crack initiation life of TC4 titanium alloy is verified by experiments.
JIANG Ze, XU XiWu, GUO ShuXiang, WU Bin, QI Yan   +4 more
doaj  

Observation of the initial process of internal fracture in very high cycle fatigue in Ti-6Al-4V by synchrotron radiation μCT imaging

Nihon Kikai Gakkai ronbunshu, 2017
The initiation and growth of internal small fatigue cracks with around ten or several dozen μm in Ti-6Al-4V were nondestructively examined by using synchrotron radiation μCT at the large synchrotron radiation facility SPring-8.
Fumiyoshi YOSHINAKA, Takashi NAKAMURA, Kazuaki TAKAKU, Daiki SHIOZAWA, Yoshikazu NAKAI, Kentaro UESUGI   +5 more
doaj   +1 more source

Effects of microstructure on room temperature fatigue crack initiation and short crack propagation in Udimet 720Li Ni-base superalloy

, 2008
An assessment of the effects of microstructure on room temperature fatigue crack initiation and short crack propagation in a Ni-base superalloy is presented.
Pang, H.T., Reed, P.A.S.
core   +1 more source

Effects of graphite nodules on crack growth behaviour of austempered ductile iron [PDF]

, 2007
Austempered ductile iron (ADI) is a candidate material for camshafts, where however, the early stages of fatigue damage are of major concern during service.
Reed, P.A.S., Gao, N., Stokes, B.
core   +1 more source

Experimental investigation on crack initiation and damage stresses of deep granite under triaxial compression using acoustic methods

Journal of Rock Mechanics and Geotechnical Engineering, 2023
Crack initiation stress and crack damage stress are two critical indices for assessing the fracture strength of rock mass. However, understanding the stress characteristics of crack initiation and damage under triaxial compression remains still immature.
Xiaoling Zhao, Tao Zhou, Tianqi Zhai, Yang Ju, Jianbo Zhu   +4 more
doaj   +1 more source

Effect of Notches on Fatigue Crack Initiation and Early Propagation Behaviors of a Ni-Based Superalloy at Elevated Temperatures

Metals
The role of notch stress and surface defects on fatigue crack initiation and small-crack propagation behavior has been investigated using groove simulation specimens.
Zuopeng Zhao, Xuteng Hu, Zhiwei Guo
doaj   +1 more source

A discrete dislocation dynamics study aiming at understanding fatigue crack initiation [PDF]

, 2003
We use discrete dislocation dynamics to build a model for fatigue crack initiation in a surface grain. Dislocations are modeled as line singularities in an elastic medium where they can be generated from pre-existing sources, glide or annihilate.
Giessen, Erik van der,, Van der Giessen, E, Brinckmann, Steffen,, Van der Giessen, E; id_orcid, Giessen, Erik van der, Brinckmann, S, Giessen, Erik van der; id_orcid, van der Giessen, E., van der Giessen, E.; id_orcid, Steffen Brinckmann, Erik Van Der Giessen, Brinckmann, S., Brinckmann, Steffen   +12 more
core   +1 more source

Local and non-local approaches to creep crack initiation and propagation

, 2003
A functional form of local brittle strength conditions for a time- or history-dependent materials is presented. The particular strength condition associated with the Robinson linear damage accumulation rule and the power-type durability diagram is ...
Mikhailov, SE, Namestnikova, IV
core   +1 more source

Prediction of fatigue crack initiation life in SA312 Type 304LN austenitic stainless steel straight pipes with notch

Nuclear Engineering and Technology, 2022
In the nuclear power plants, stainless steel is widely used for fabrication of various components such as piping and pipe fittings. These piping components are subjected to cyclic loading due to start up and shut down of the nuclear power plants.
A. Ramachandra Murthy, S. Vishnuvardhan, K.V. Anjusha, P. Gandhi, P.K. Singh   +4 more
doaj   +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