Results 21 to 30 of about 6,196 (260)

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

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

Properties of GH4169 Superalloy Characterized by Nonlinear Ultrasonic Waves

Advances in Materials Science and Engineering, 2015
The nonlinear wave motion equation is solved by the perturbation method. The nonlinear ultrasonic coefficients β and δ are related to the fundamental and harmonic amplitudes.
Hongjuan Yan, Chunguang Xu, Dingguo Xiao, Haichao Cai   +3 more
doaj   +1 more source

Effect of Ultrasonic Shot Peening on the Microstructure and Fatigue Properties of FGH99 Alloy [PDF]

Cailiao Baohu
In order to improve the high-temperature performance of turbine discs， an ultrasonic shot peening test was conducted on FGH99 alloy for turbine discs.The microstructure and fatigue properties of FGH99 alloy after ultrasonic shot peening treatment were ...
SONG Yinggang, LUO Xuekun, WANG Xin, FENG Yefei, TIAN Gaofeng
doaj   +1 more source

Very high-cycle fatigue properties of 90° unidirectional CFRP laminates and evaluation of fatigue limits by free volume measurement using positron microscopy

Mechanical Engineering Journal, 2023
The objective of this study was to experimentally evaluate the fatigue limit of 90° unidirectional carbon fiber reinforced plastic (CFRP) laminates.
Masafumi TAZUKE, Tsuyoshi MIYAKOSHI, Atsushi HOSOI, Koji MICHISHIO, Nagayasu OSHIMA, Hiroyuki KAWADA   +5 more
doaj   +1 more source

Prediction of Fatigue Damage Evolution in 3D-Printed CFRP Based on Ultrasonic Testing and LSTM

Applied Sciences
To address the prediction of fatigue damage for 3D-printed Carbon Fiber Reinforced Polymer (CFRP), this study used 3D-printing technology to fabricate CFRP specimens. Through multi-stage fatigue testing, samples with varying porosity levels were obtained.
Erzhuo Li, Sha Xu, Hongqing Wan, Hao Chen, Yali Yang, Yongfang Li   +5 more
doaj   +1 more source

Evaluation of the Potential of Laser Shock Peening Compared with Cold Expansion for Improving Fatigue Resistance of Riveted Lap Joints of Aerospace Grade 7175 Al Alloy

Advanced Engineering Materials, EarlyView.
This study investigates laser shock peening for enhancing fatigue performance of riveted aerospace aluminum joints. A comparative approach with cold expansion combines fatigue testing and synchrotron X‐ray methods. Integrating mechanical testing with residual stress and strain characterization provides insights into how different treatments affect the ...
Ogün Baris Tapar, David Osman Busse, Maximilian Sprengel, Domenico Furfari, Marc‐André Nielsen, Guilherme Abreu Faria, Jérémy Epp   +6 more
wiley   +1 more source

Ultrasonic fatigue tests on the Inconel alloy 718

Procedia Structural Integrity, 2020
Abstract Ultrasonic fatigue tests were carried out on the Inconel alloy 718 on pre-corroded and specimens without pre-corrosion. At high applied stress (up to 746 MPa) the specimens without pre-corrosion show fatigue endurance higher compared with the pre-corroded specimens with a factor of 10; whereas at low stress level (close to 510 MPa), the ...
Gonzalo M. Dominguez Almaraz, Manuel Guzmán Tapia, Alexiane Dominguez   +2 more
openaire   +2 more sources

Numerical Investigation of a Dual‐Mode Shape Memory Alloy Stent Enabling Secondary Expansion via Focused Ultrasound: A Potential Strategy for Correcting In‐Stent Restenosis

Advanced Engineering Materials, EarlyView.
This study demonstrates a novel noninvasive strategy to treat in‐stent restenosis using focused ultrasound. A shape memory alloy stent initially expands at body temperature. If restenosis occurs, targeted ultrasound heating thermally actuates the stent, enabling a secondary expansion to reopen the blocked vessel, offering a potential alternative to ...
Stephen Asare, Lucinda Duncan, Josiah Owusu‐Danquah, Brian L. Davis   +3 more
wiley   +1 more source

Elinvar Materials: Recent Progress and Challenges

Advanced Engineering Materials, EarlyView.
Elinvar materials, exhibiting temperature‐invariant elastic modulus, are critical for precision instruments and emerging technologies. This article reviews recent progress in the field, with a focus on the anomalous thermoelastic behavior observed in key material systems.
Wenjie Li, Yang Ren
wiley   +1 more source