Results 51 to 60 of about 14,338 (208)

In situ synchrotron ultrasonic fatigue testing device for 3D characterisation of internal crack initiation and growth [PDF]

, 2019
International audienceThis work presents a new ultrasonic fatigue testing device for studying the initiation and propagation mechanisms of internal microstructurally short fatigue cracks using in situ synchrotron tomography. Its principle is described as
Ranc, N., Nadot, Y., RANC, Nicolas, Andrew King, PALIN-LUC, T., BONNIN, Anne, Bonnin, A., Yves Nadot, MESSAGER, Alexandre, Thierry Palin‐Luc, GAILLARD, Yves, BUFFIÉRE, Jean Yves, Palin-Luc, Thierry, KING, Andrew, Saintier, Nicolas, Buffiere, J.-Y., Messager, A., Mohamed El May, King, A., Nicolas Saintier, PALIN LUC, Thierry, Gaillard, Y., Arnaud Junet, Jean‐Yves Buffiere, BUFFIERE, Jean-Yves, EL MAY, Mohamed, Nicolas Ranc, Yves Gaillard, El May, M., JUNET, Arnaud, NADOT, Yves, Anne Bonnin, Junet, A., SAINTIER, N., Alexandre Messager   +34 more
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Multi-Objective Optimization of the Ultrasonic Scalpel Rod and Tip with Improved Performance: Vibration Frequency, Amplitude, and Service Life

Chinese Journal of Mechanical Engineering
Ultrasonic scalpel design for minimally invasive surgical procedures is mainly focused on optimizing cutting performance. However, an important issue is the low fatigue life of traditional ultrasonic scalpels, which affects their long-term reliability ...
Jiaqi Zhao, Yuhao Zhai, Xuzhe Jia, Naiwen Deng, Kunxu Li, Guangchao Han, Rong Chen, Dong Wang, Wei Bai   +8 more
doaj   +1 more source

Surface integrity and fatigue properties of Ti–6Al–4V alloy under the ultrasonic surface rolling process excited strain rate effect

Journal of Materials Research and Technology
Ultrasonic surface rolling process is a novel surface enhancement technique that significantly influences the surface integrity and fatigue performance of titanium alloys.
Xuming Zha, Hao Qin, Zhi Yuan, Linqing Xi, Xiao Chen, Yi Li, Qingshan Jiang, Zhilong Xu, Feng Jiang   +8 more
doaj   +1 more source

Thermographic analysis in ultrasonic fatigue tests [PDF]

Fatigue & Fracture of Engineering Materials & Structures, 2006
ABSTRACTThree kinds of alloys used in the automotive industry for structures and engine components are subjected to very high cycle fatigue damage during working service. In the study, fatigue damage progression of the three kinds of alloys was investigated in the very high cycles fatigue regime by means of thermographic analysis.
Xue, Hongqian, Wagner, Danièle, Ranc, Nicolas, Bayraktar, Emin   +3 more
openaire   +3 more sources

Enhancement of Fatigue Endurance Limit through Ultrasonic Surface Rolling Processing in EA4T Axle Steel

Metals, 2020
Fatigue property is a key evaluation index for the service reliability of railway axle. In this work, the effect of ultrasonic surface rolling processing (USRP) on the surface characteristic and fatigue property was investigated in an EA4T axle steel ...
Xiaodi Wang, Liqin Chen, Peng Liu, Guobiao Lin, Xuechong Ren   +4 more
doaj   +1 more source

Microstructure and Fatigue Property of MB8 Magnesium Alloy Cross Welded Joints with Ultrasonic Impact

Cailiao gongcheng, 2018
Surface treatment was carried out on the weld toe of MB8 magnesium alloy welded joints with ultrasonic impact treatment(UIT) method. The Surface microstructure and the fatigue property of treated and as-welded MB8 magnesium alloy welded joints were ...
HE Bo-lin, JIANG Ming-ming, YU Ying-xia, LI Li   +3 more
doaj   +1 more source

Evaluation of fatigue damage in a pure copper with nonlinear three-wave interaction

Nihon Kikai Gakkai ronbunshu, 2016
We investigated nonlinear ultrasonic characterization, nonlinear three-wave interaction, of the pure copper during fatigue with EMAR (Electromagnetic Acoustic Resonance), which was the combination with ultrasonic resonance and non-contacting transducer ...
Yutaka ISHII, Toshihiro OHTANI, Masayoshi NAKANIWA, Masayuki KAMAYA   +3 more
doaj   +1 more source

Novel hydrophilic polymer couplant for application in ultrasonic non destructive testing [PDF]

, 2001
Ultrasonic Non Destructive Testing (NDT) is used to inspect materials and structures for defects. Water is commonly used in NDT as a couplant to improve ultrasonic transfer between an interrogating probe and test piece.
Bourne, S.J., Bourne, Simon James
core  

Dissipation Assessments During Dynamic Very High Cycle Fatigue Tests [PDF]

, 2015
This paper presents an experimental device developed to detect and estimate dissipated energy during very high cycle fatigue tests (VHCF) at high loading frequency (20 kHz) and low stress (i.e. far below the yield stress).
RANC, Nicolas, FAVIER, Véronique, CHRYSOCHOOS, André, BLANCHE, Antoine, CHRYSOCHOOS, A   +4 more
core   +1 more source

Ultrasonic Resonance Fatigue Testing of 6082 Aluminum Alloy

Metals
This study explores the fatigue properties of EN AW-6082-T6 aluminum alloy in the gigacycle range (106–109 cycles), using ultrasonic resonance fatigue testing at 20 kHz in a push–pull mode with a symmetric load cycle (R = −1).
Diyan M. Dimitrov, Stoyan D. Slavov, Desislava Y. Mincheva, Adélio M. S. Cavadas   +3 more
doaj   +1 more source