Results 31 to 40 of about 57,383 (312)

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

Characterization of crack nucleation in TA6V under fretting-fatigue loading using the potential drop technique [PDF]

, 2010
Crack initiation in a Ti-6Al-4V alloy was investigated experimentally in fretting fatigue conditions. A cylinder-plane geometry was used for the contact, and partial slip conditions were considered.
Andersson, Barnett, Fellows, Fouvry, Fouvry, Fouvry, Gandossi, Hutson, Johnson, Kondo, Kubota, Kubota, Lee, Lykins, Lykins, Madge, Mall, Martinez, Muñoz, Namjoshi, Navarro, Nelsen, Nicolaou, Nowell, Proudhon, Proudhon, Spitas, Szolwinski, Szolwinski, Venkatesh   +29 more
core   +2 more sources

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

Effect of ultrasonic nanocrystal surface modification on the characteristics of AISI 310 stainless steel up to very high cycle fatigue [PDF]

, 2016
Effects of ultrasonic nanocrystal surface modification (UNSM) on the very high cycle fatigue response of AISI 310 stainless steel have been investigated. The higher impact force used in UNSM treatment showed a higher fatigue life improvement. The fatigue
Amanov, Amanov, Cao, Cherif, Dorman, Huang, Khan, Khan, Murakami, Pyoun, Sakai, Sakai, Shiozawa, Shiozawa, Suh, Suh, Suh, Trsko, Wang, Wu, Zhang, Zhou   +21 more
core   +1 more source

A Comparison of Two Methods Modeling High-Temperature Fatigue Crack Initiation in Ferrite–Pearlite Steel

Crystals, 2022
High-temperature fatigue tests are carried out to investigate the fatigue crack initiation behavior of ferrite–pearlite steel. Two approaches to modeling fatigue crack initiation under high temperatures in ferrite–pearlite steel are developed and ...
Zheng Fang, Lu Wang, Zheng Wang, Ying He
doaj   +1 more source

Fatigue Crack Initiation and Small Crack Propagation Behaviors of Simulated Specimens in a Ni-Based Superalloy

Metals
The role of notch geometry and stress levels on fatigue crack initiation and small crack propagation behavior in the FGH96 superalloy was investigated using groove and bolt hole simulated specimens at 500 °C.
Zuopeng Zhao, Xuteng Hu, Zhiwei Guo
doaj   +1 more source

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  

Rotational bending fatigue life and fatigue crack initiation mechanism of Cr4Mo4V bearing steel

Cailiao gongcheng, 2019
The rotational bending fatigue life and fatigue crack initiation mechanism of Cr4Mo4V bearing steel were studied by means of rotating bending fatigue test at room temperature.
GUO Jun, YANG Mao-sheng, LU De-hong, LI Xin-yu   +3 more
doaj   +1 more source

Short crack initiation and growth at 600 °C in notched specimens of Inconel718

, 2003
The natural initiation and growth of short cracks in Inconel®718 U-notch specimens has been studied at 600 °C in air. U notches were introduced through broaching, and hardness traces and optical microscopy on cross-sections through the U notch broaching ...
Connolley, T., Reed, P.A.S., Starink, M.J.   +2 more
core   +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, Cuenca, Rémy   +3 more
core   +3 more sources