Results 41 to 50 of about 14,338 (208)

Optimization of ultrasonic rolling parameters act on thread root and its influence on the fatigue life of bolts [PDF]

ITM Web of Conferences
Due to the large stress concentration at the root of the external thread, fatigue failure is apt to occur when subjected to alternating loads. In present study, to improve the fatigue resistance of threaded components, an ultrasonic rolling method was ...
Liu Xuanyu, Li Lei, Kang Haonan, Zheng Xiaodong   +3 more
doaj   +1 more source

On the Specimen Design, Physical Properties and Geometry Effect on Heat Generation and Thermal Gradient in Ultrasonic Fatigue

Machines
Performing fatigue characterisation is often an expensive task, being both time consuming and expensive. Taking that into account, ultrasonic fatigue testing is an interesting solution, since it can be thousands of times faster than traditional ...
Felipe Klein Fiorentin, Rita Dantas, Jorge Wolfs Gil, Andrea Piga Carboni, Thiago Antonio Fiorentin, Abílio Manuel Pinho de Jesus   +5 more
doaj   +1 more source

Very High Cycle Fatigue Behavior of Austenitic Stainless Steels with Different Surface Morphologies

Metals, 2022
The fatigue behavior of the two austenitic stainless steels AISI 904L and AISI 347 with different surface morphologies, (i) conventionally turned and finally polished, (ii) cryogenic turned using CO2 snow, as well as (iii) cryogenic turned and finally ...
Marek Smaga, Annika Boemke, Dietmar Eifler, Tilmann Beck   +3 more
doaj   +1 more source

Study on ultrasonic evaluation of connection state and service performance of resistance projection welding joints

Discover Applied Sciences
Fatigue failure of welded joints is a performance factor of structural parts under dynamic load, and the effective evaluation of its life is always the key to the service ability of structures.
Zhenzhen Duan, Xueshan Zhao, Guanghao Zhou, Kunning Jia, Xiaopeng Gu, Ting Ma   +5 more
doaj   +1 more source

Residual Stress in Wheels: Comparison of Neutron Diffraction and Ultrasonic Methods, with Trends in RCF

, 2014
The critical damage mechanism on many GB passenger train wheels is Rolling Contact Fatigue (RCF) cracking in the rim. Evidence from field observations suggests that RCF damage occurs much more quickly as the wheelsets near the end of their life.
Bevan, Adam, Bevan, A. J., Kabra, S, Zhang, S. Y, Molyneux-Berry, P. B., Molyneux-Berry, Paul, Zhang, S. Y., Kabra, S.   +7 more
core   +1 more source

Fatigue lifetime of AlBC(3) alloy by ultrasonic fatigue testing machine in cavitation regime

The Journal of Engineering, 2015
In this study, the influence of ultrasonic nanocrystalline surface modification (UNSM) technique on the cavitation fatigue properties of AlBC(3) alloy was investigated.
I.S. Cho, A. Amanov, I.G. Park
doaj   +1 more source

Ultrasonic fatigue testing system combined with online nondestructive testing for carbon fiber reinforced composites

, 2022
S.855-861The fatigue properties of carbon fiber reinforced polymers (CFRP), especially in the Very High Cycle Fatigue (VHCF) regime, are rarely investigated so far.
Helfen, Thomas Benedikt, Rabe, Ute, Backe, Daniel, Balle, Frank, Eifler, Dietmar, Boller, Christian, Sklarczyk, Christoph, Hirsekorn, Sigrun   +7 more
core  

Fatigue deformation of 1050 aluminum in ultrasonic fatigue testing.

Journal of Japan Institute of Light Metals, 1995
Ultrasonic fatigue tests have been performed on commercial 1050 aluminum. Internal friction (Q-1) has been measured during fatigue tests and as a function of strain amplitude (e). It is shown that more than 109 cycles test is necessary in order to determine the fatigue limit. Q-1 versus e curves have the inflection points at particular strain amplitude
YAMAMOTO, Atsushi, MAEDA, Morihiko, TSUBAKINO, Harushige, IMANAKA, Takuichi, SUETSUGU, Jun   +4 more
openaire   +1 more source

Very high-cycle fatigue properties and microstructural damage mechanisms of selective laser melted AlSi10Mg alloy

, 2022
S.55-69The influence of cooling rates in selective laser melted AlSi10Mg on fatigue properties is studied. The failure mechanisms during quasistatic and fatigue loading were analyzed using electron microscopy, X-ray computed tomography and ultrasonic ...
Johannsen, J., Awd, M., Siddique, S., Emmelmann, C., Walther, F.   +4 more
core   +1 more source

ULTRASONIC ATTENUATION IN STEELS DURING FATIGUE [PDF]

Le Journal de Physique Colloques, 1985
The change of ultrasonic attenuation Ɗα as a function of fatigue cycle number n correlates well with the length of fatigue crack. A depinning model of dislocations with kinks is suggested to interpret the experimental results.
Zhengliang, Pan, Guangyi, Li
openaire   +1 more source