Results 91 to 100 of about 1,044 (205)

Fatigue Life Extension of Offshore Structures by Ultrasonic Peening

open access: yes, 2011
The service life of offshore installations is limited by its structural integrity. Furthermore the structural integrity is mainly governed by the fatigue resistance of critical welded details.
Luis Lopez Martinez
core   +1 more source

Precision Strain Engineering in Perovskite Optoelectronics via Shock‐Driven Gradient Annealing for Enhanced Stability and Light Response

open access: yesSmall, Volume 21, Issue 20, May 19, 2025.
Residual tensile strain in perovskite films elevates defect density and impedes charge extraction. Laser shock‐driven gradient annealing (SDGA) leverages plasma shocks to release strain and refine crystallization, yielding uniform, low‐defect films.
Dingyue Sun, Feng Liu, Gary J. Cheng
wiley   +1 more source

Increased osteoblast function in vitro and in vivo through surface nanostructuring by ultrasonic shot peening

open access: yesInternational Journal of Nanomedicine, 2015
Yongyuan Guo,1,* Beibei Hu,2,* Chu Tang,1 Yunpeng Wu,1 Pengfei Sun,1 Xianlong Zhang,3 Yuhua Jia1 1Orthopaedic Department, 2Medical Examination Center, Qilu Hospital of Shandong University, Jinan, 3Orthopaedic Department, The Sixth Affiliated People&
Guo Y   +6 more
doaj  

Life extension of FPSO's structural details using ultrasonic peening

open access: yes, 2011
Fatigue life extension has been achieved by the application of ultrasonic peening to high stressed areas on pallet stool to deck and longitudinal to frames weld details on FPSO installations.
Luis Lopez Martinez   +1 more
core   +1 more source

Improvement in fatigue strength of welding material for hydraulic turbine runner using ultrasonic shot peening

open access: yesNihon Kikai Gakkai ronbunshu, 2014
In hydraulic pumped storage turbine runners, accidents due to cyclic loading often occur, that caused by residual stress at time of welding repair of a cavitation eroded part. In this study, for the aim of more fatigue property improvement of the welding
Yoshiichirou HAYASHI   +2 more
doaj   +1 more source

Effect of Ultrasonic Peening on Residual Stresses at a T-Butt Weld Toe

open access: yes, 2016
The current paper presents the results of neutron diffraction measurements of the through-thickness residual stress field at the toe of a T-butt weld, made from 10mm thick A350 grade black mild steel plates, after successful ultrasonic peening.
Simons, P   +5 more
core   +1 more source

SURFACE NANOCRYSTALLIZATION OF IRON INDUCED BY ULTRASONIC SHOT PEENING [PDF]

open access: yes, 1999
—A nanocrystalline surface layer was fabricated on a pure Fe plate by using an ultrasonic shot peening (USSP) technique. The USSP induced surface nanocrystallization products were characterized by means of X-ray diffraction (XRD) and transmission ...
M. L. Suib   +7 more
core   +1 more source

Residual Stresses in Ultrasonically Peened Fillet Welded Joints

open access: yesAdvanced Materials Research, 2014
Fatigue cracks mostly initiate at areas subjected to high tensile residual stress and stress concentration. Ultrasonic peening is a mechanical method to increase fatigue life by imparting compressive residual stress. In this study residual stresses are characterized in fillet welded ship structural steel plates with longitudinal attachments. As-welded,
Bilal Ahmad, Michael E. Fitzpatrick
openaire   +1 more source

The effect of prior ultrasonic shot peening treatment on the low-temperature plasma nitriding of a metastable β-Ti alloy

open access: yes, 2023
International audienceMetastable β-Ti alloys have recently gained popularity for the fabrication of medical implants such as prostheses. However, they suffer from poor tribological properties.
Pichon, Luc   +4 more
core   +2 more sources

Effect of Ultrasonic Shot Peening on Shape Memory Alloy

open access: yesTransactions of Japan Society of Spring Engineers, 2009
In order to overcome difficulties that have hindered precision casting of shape memory alloys, we made ingots created with self-propagating high temperature synthetic method (SHS) which eventually led us to the success of precision casting utilizing lost wax process.
Kanehisa HATTORI   +4 more
openaire   +2 more sources

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