Results 171 to 180 of about 3,863 (228)
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International Journal of Computational Materials Science and Surface Engineering, 2013
This paper gives a brief overview of published results pertinent to ultrasonic shot peening, a relatively new method to introduce severe plastic deformations in the surface of materials and obtain nanosized grains. Among reported benefits are increased surface hardness and fatigue resistance, and possibility to perform nitriding at lower temperatures ...
Milan Rakita +4 more
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This paper gives a brief overview of published results pertinent to ultrasonic shot peening, a relatively new method to introduce severe plastic deformations in the surface of materials and obtain nanosized grains. Among reported benefits are increased surface hardness and fatigue resistance, and possibility to perform nitriding at lower temperatures ...
Milan Rakita +4 more
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Random Approach to Peening Coverage in Ultrasonic Shot-Peening
Materials and Manufacturing Processes, 1995Abstract The so-called ultrasonic shot-peening is a new process using calibrated peening hard balls motioned by walls vibrating at 20000 Hz. As in conventional shot-peening, a fully peened surface coverage is required tor the process to be efficient. However, it is intricate to determine the coverage ratio experimentally. A statistical approach, issued
H. Chardin +3 more
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Overview of ultrasonic shot peening
Surface Engineering, 2017Ultrasonic shot peening (USP) is acknowledged as an effective surface treatment method to enhance the mechanical performance of materials by inducing compressive residual stress in solid metals and alloys. This article overviews recent researches from our group at Purdue University on the USP in the aspects of modelling the kinetics of the shots ...
Fei Yin +3 more
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Modelling of Ultrasonic Shot Peening
Volume 6B: Materials and Fabrication, 2015Component manufacturing may induce cold work, residual stresses, microstructure changes and even surface defects. This initial condition is usually ignored in component integrity assessments, but can strongly affect its lifetime. For instance, it is well-known that a rough surface finish associated to the presence of tensile residual stresses may favor
Vincent Robin +3 more
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Ultrasonic characterization of shot-peened metal surfaces
SPIE Proceedings, 2001Shot peening is a well-known method for extending the fatigue life of metal components by introducing near-surface compressive residual stresses. The capability to nondestructively evaluate near-surface residual stress would greatly aid the assurance of proper fatigue life in shot-peened components.
Anton I. Lavrentyev, William A. Veronesi
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Modelling of the Ultrasonic Shot Peening Process
Materials Science Forum, 2005The aim of this work is to reach a better understanding of the ultrasonic shot-peening process and, in particular, the evolution of the shot speed distribution. A simple 1D modelling of the interaction between the shots and the sonotrode is carried out.
Pilé, C. +4 more
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Shot Peening, Ultrasonically Activated
2017<div class="section abstract"> <div class="htmlview paragraph">This specification covers the requirements for inducing compressive residual stresses on the surface of metal parts using ultrasonically activated shot peening.</div></div>
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3D Model of Shot Dynamics for Ultrasonic Shot Peening
Materials Science Forum, 2013This paper presents a 3D model that simulates an ultrasonic shot peening (USP) operation, using realistic process parameters and peening setups (part and chamber geometries). By simulating the shot dynamics (shot trajectories and impacts), statistical and spatial data are obtained for the peened component, i.e.
Badreddine, Jawad +5 more
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Peening the tip of a notch using ultrasonic cavitation
Ultrasonics, 2018A peening technique using ultrasonic cavitation was proposed to peen the tip of deep notches. The working theory of the present peening technique for the notch tip was described and numerically demonstrated. An experiment using a deep notch shape and an ultrasonic loading with a frequency of 20kHz achieved noticeable compressive residual stresses at ...
Sunghwan, Jung +2 more
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Surface Nanocrystallization of Pure Ni Induced by Ultrasonic Shot Peening
Science of Advanced Materials, 2014Peening is mainly used as a method of surface treatment for microstructural modification in order to improve surface mechanical properties. The ultrasonic shot peening (USP) technique can cause severe plastic deformation with its high strain rate on the surface of metallic parts.
Kejian, Li +9 more
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