Results 31 to 40 of about 19,892 (363)

Influence of woven ply degradation on fatigue crack growth in thin notched composites under tensile loading [PDF]

, 2010
This paper deals with the fatigue of the through the-thickness crack propagation in thin notched composite laminates made of two glass woven plies. It highlights the different crack growths between warp and weft directions of the woven ply.
Barrau, Jean-Jacques, Bizeul, Matthieu, Bouvet, Christophe, Cuenca, Rémy   +3 more
core   +1 more source

Low cycle fatigue damage model and sensitivity analysis of fatigue crack initiation by finite element approach

Fracture and Structural Integrity, 2020
To meet the design requirements, different types of defects are often machined on the surface of fatigue components. Local stress concentration formed at the notch accelerates the initiation of fatigue crack, therefore greatly shortens the service lives ...
Zhi-qiang Wang, Xiao-guang Huang, Dian-hao Zhang   +2 more
doaj   +1 more source

Fatigue crack growth in thin notched woven glass composites under tensile loading. Part I: experimental [PDF]

, 2011
Helicopter blades are made of composite materials mainly loaded in fatigue and have normally relatively thin skins. A through-the-thickness crack could appear in these skins.
Barrau, Jean-Jacques, Bizeul, Matthieu, Bouvet, Christophe, R. Cuenca, J.J. Barrau, Cuenca, Rémy, M. Bizeul, C. Bouvet   +7 more
core   +1 more source

Early slip activity and fatigue crack initiation of a near alpha titanium alloy [PDF]

MATEC Web of Conferences, 2020
For titanium alloys, crack initiation as a result of plastic strain accumulation has been shown to govern fatigue life under the high cycle fatigue regime.
Liu Conghui, Thomas Rhys, Quinta da Fonseca João, Preuss Michael   +3 more
doaj   +1 more source

EXPERIMENT AND SIMULATION RESEARCH ON UNIFORM SUPERCHARGED FATIGUE CRACK INITIATION OF AIRCRAFT FUSELAGE SKIN

Jixie qiangdu, 2020
The fatigue crack initiation of the fuselage structure skin under the uniform supercharged cyclic load of 0 ～ 7. 8 Psi was experimentally studied by the self-made aircraft fuselage skin uniform supercharged fatigue simulation device.
LIU LiPing, ZHANG Fang, ZHONG XiaoKun, BAO Rui, XU JianXin, QIN WenChao   +5 more
doaj  

Fatigue crack initiation and propagation of 100Cr6 steel under torsional loading in very high cycle regime

MATEC Web of Conferences, 2018
Cyclic torsional fatigue properties of a high strength steel 100Cr6 are investigated using an ultrasonic torsional fatigue testing machine, and the results are compared with those obtained with fatigue tests under axial loading.
Xue Hongqian, Gao Tao, Sun Zhidan, Zhang Xianjie   +3 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

Research on evolution behavior of 42CrMo microscopic fatigue short crack based on microstructure effect of material

Advances in Mechanical Engineering, 2022
To investigate the causes of damage dispersion in fatigue life of alloy materials, fatigue tests on 42CrMo are carried out under microscope with the aid of a micro fatigue testing device.
Nan Xu, Zhiwei Fu, Yuan Wang, Jianhua Liu, He Wang   +4 more
doaj   +1 more source

Size effects on residual stress and fatigue crack growth in friction stir welded 2195-T8 aluminium - Part I: Experiments [PDF]

, 2011
Residual stress fields were measured in three different sizes of Compact-Tension (C(T)) and eccentrically loaded single edge notch (ESE(T)) specimens containing transverse or longitudinal welds. The effect of size on residual stress profiles was studied.
Irving, Phil E., P. Staron, T. Fischer, Ma, Yu E., Staron, P., Fischer, T., P.E. Irving, Yu E. Ma   +7 more
core   +1 more source

A Framework for Predicting Fatigue Crack Initiation Life in Pipelines with Girth Welds

Journal of Marine Science and Engineering
Current studies on fatigue crack initiation in pipelines remain relatively limited. Existing frameworks are confronted with issues including difficulties in crack monitoring and limited consideration of intragranular short-crack propagation.
Jianxing Yu, Yefan Su, Hanxu Tian, Zihang Jin   +3 more
doaj   +1 more source