Effects of ultrasonic shot peening process parameters on nanocrystalline and mechanical properties of pure copper surface

2021 ◽  
Vol 259 ◽  
pp. 124025
Author(s):  
Hu Chen ◽  
Yanjin Guan ◽  
Lihua Zhu ◽  
Yi Li ◽  
Jiqiang Zhai ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Process Parameters ◽  
Shot Peening ◽  
Pure Copper ◽  
Copper Surface ◽  
Ultrasonic Shot Peening

3D Model of Shot Dynamics for Ultrasonic Shot Peening

2013 ◽  
Vol 768-769 ◽  
pp. 503-509 ◽  
Author(s):  
Jawad Badreddine ◽  
Emmanuelle Rouhaud ◽  
Matthieu Micoulaut ◽  
Sebastien Remy ◽  
Vincent Desfontaine ◽  
...  
Keyword(s):  
Residual Stress ◽  
Process Parameters ◽  
Spatial Data ◽  
Shot Peening ◽  
3D Model ◽  
Prediction Models ◽  
Dissipated Energy ◽  
Displacement Fields ◽  
Ultrasonic Shot Peening ◽  
Stress Prediction

This 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. surface coverage and coverage rate, impact speeds and angles, dissipated energy... This data can then be used for i) optimizing the design of peening chambers and process parameters and ii) predicting the residual stress and displacement fields induced by USP in the peened component. In fact, data from the 3D model can be used as initial data in existing residual stress prediction models. A chaining methodology was developed for this purpose and allows linking the choice of process parameters and USP setup to the induced residual stress displacement fields.

Modelling of the Ultrasonic Shot Peening Process

2005 ◽  
Vol 490-491 ◽  
pp. 67-72 ◽  
Author(s):  
C. Pilé ◽  
Manuel François ◽  
Delphine Retraint ◽  
Emmanuelle Rouhaud ◽  
Jian Lu
Keyword(s):  
Process Parameters ◽  
Vibration Frequency ◽  
Shot Peening ◽  
Boltzmann Distribution ◽  
Perfect Gas ◽  
Average Speed ◽  
Speed Distribution ◽  
Almen Intensity ◽  
Ultrasonic Shot Peening ◽  
The Impact

The 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. The impact is considered as inelastic with an energy absorption that depends on the speed of the shot. It is found that after about 10 interactions (» 1s) the speed distribution in the chamber follows a Maxwell-Boltzmann distribution, which is the distribution found in a perfect gas at equilibrium. The influence of various process parameters such as the sonotrode amplitude, the vibration frequency on the average speed and on the Almen intensity is studied.

Comparison Research on Mechanical Properties of High Temperature Alloy after Laser Peened and Ultrasonically Peened

2014 ◽  
Vol 670-671 ◽  
pp. 46-51
Author(s):  
Xiao Jun Shen ◽  
Cheng Wang ◽  
Dong Sun ◽  
Zhi Lin Lai ◽  
Dong Ye Yao
Keyword(s):  
Mechanical Properties ◽  
Shot Peening ◽  
Fatigue Testing ◽  
Laser Shock ◽  
Hardness Tester ◽  
Comparison Research ◽  
Ultrasonic Shot Peening ◽  
Shock Peening ◽  
Heat Preservation ◽  
Hardness Gradient

For comparative study of the influence of laser shock peening and ultrasonic shot peening on the mechanical property of superalloy K403, untreated, ultrasonic shot peening with 850°C heat preservation, laser shock (heat preservation, Hp), the fatigue testing of samples under four states were conducted at room temperature, and the analysis of two techniques’ influence on the mechanical properties of K403 was done by hardness tester, profile tester, scanning electron microscopy (SEM). The results indicated that LSP with Hp, LSP, USP with Hp can improve the fatigue life of K403 respectively for 2.4, 2.25, 1.4 times more longer than untreated sample; the increase of micro-hardness gradient after LSP were smaller than after USP. The SEM studies showed that the γ' phase distortion was elongated and the plastic deformation of samples by LSP was larger than by USP.

Simulation of shot dynamics for ultrasonic shot peening: Effects of process parameters

2014 ◽  
Vol 82 ◽  
pp. 179-190 ◽  
Author(s):  
Jawad Badreddine ◽  
Emmanuelle Rouhaud ◽  
Matthieu Micoulaut ◽  
Sebastien Remy
Keyword(s):  
Process Parameters ◽  
Shot Peening ◽  
Ultrasonic Shot Peening
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