Estimation of Internal Stress Profiles Using the Barkhausen Noise Effect—Application: Verification to the Homogeneity of the Shot Peening Process Performed on the Raceways of Aerospace Bearing Rings

2005 ◽  
Vol 73 (2) ◽  
pp. 342-346 ◽  
Author(s):  
S. Desvaux ◽  
M. Duquennoy ◽  
M. Ouaftouh ◽  
J. Gualandri ◽  
M. Ourak

In this paper, we present a nondestructive method based on the Barkhausen noise effect for estimating internal stress profiles, with the goal of controlling bearing raceways to determine the homogeneity of the shot peening process. Given the industrial imperative to characterize parts, our method concentrates on stress profiles in the first 60μm under the surface, in steps of 5 or 10μm. Our results show the efficient use of Barkhausen noise to estimate the residual stress profiles of bearing raceways. A mapping of the stress profiles measured by Barkhausen noise was completed for the entire width of an outer ring raceway. This study confirmed that it is possible to use Barkhausen noise to test the uniformity of the shot peening treatment and to inspect the homogeneity of surface and subsurface stresses on the bearing rings. The proposed method is rapid, well suited to industrial imperatives connected to on-line measurement, and easily adapted to the circular geometries of the bearing rings.

Author(s):  
Aki Sorsa ◽  
Suvi Santa-aho ◽  
Jukka Wartiainen ◽  
Lasse Suominen ◽  
Minnamari Vippola ◽  
...  

2013 ◽  
Vol 768-769 ◽  
pp. 519-525 ◽  
Author(s):  
Sebastjan Žagar ◽  
Janez Grum

The paper deals with the effect of different shot peening (SP) treatment conditions on the ENAW 7075-T651 aluminium alloy. Suitable residual stress profile increases the applicability and life cycle of mechanical parts, treated by shot peening. The objective of the research was to establish the optimal parameters of the shot peening treatment of the aluminium alloy in different precipitation hardened states with regard to residual stress profiles in dynamic loading. Main deformations and main residual stresses were calculated on the basis of electrical resistance. The resulting residual stress profiles reveal that stresses throughout the thin surface layer of all shot peened specimens are of compressive nature. The differences can be observed in the depth of shot peening and the profile of compressive residual stresses. Under all treatment conditions, the obtained maximum value of compressive residual stress ranges between -200 MPa and -300 MPa at a depth between 250 μm and 300 μm. Comparison of different temperature-hardened aluminium alloys shows that changes in the Almen intensity values have greater effect than coverage in the depth and profile of compressive residual stresses. Positive stress ratio of R=0.1 was selected. Wöhler curves were determined in the areas of maximum bending loads between 30 - 65 % of material's tensile strength, measured at thinner cross-sections of individual specimens. The results of material fatigue testing differ from the level of shot peening on the surface layer.


2022 ◽  
Vol 25 ◽  
Author(s):  
Marcel Freitas de Souza ◽  
Juan Manuel Pardal ◽  
Hugo Ribeiro da Igreja ◽  
Linilson Rodrigues Padovese ◽  
Maria Cindra Fonseca

2020 ◽  
Vol 284 ◽  
pp. 116747 ◽  
Author(s):  
Hsuan-Han Lai ◽  
Hao-Chung Cheng ◽  
Chen-Yu Lee ◽  
Chi-Ming Lin ◽  
Weite Wu

2013 ◽  
Vol 768-769 ◽  
pp. 66-71 ◽  
Author(s):  
Diego Cecchin ◽  
Cristy Leonor Azanza Ricardo ◽  
Mirco D'Incau ◽  
Michele Bandini ◽  
Paolo Scardi

Aluminum alloy (Al-7075-T6) samples were analyzed to determine the in-depth residual stress profile induced by a shot-peening treatment. The influence of coverage degree and Almen intensity on the surface residual stress and on the sub-surface residual stress gradient was investigated. Residual stress profiles were obtained using three different techniques: (i) standard laboratory X-ray diffraction (XRD) residual stress analysis with progressive chemical layer-removal; (ii) XRD residual stress analysis with synchrotron radiation using different X-ray energies, thus changing the penetration depths, and (iii) Blind Hole Drilling (BHD). A comprehensive comparison of the results given by the used techniques is shown.


2014 ◽  
Vol 996 ◽  
pp. 964-968 ◽  
Author(s):  
Donaro Gallitelli ◽  
Delphine Retraint ◽  
Emmanuelle Rouhaud

In this paper the residual stress states induced by conventional shot peening (SP) and surface mechanical attrition treatment (SMAT) are compared. The treated part correspond to plates made of a titanium alloy. Different intensities of these two mechanical treatments are first considered: their influence on the surface characteristics (roughness, hardness...) is studied. These experimental data are then used to develop a model for the residual stress profiles with dimensional analysis, Experimental and analytical approaches are then discussed.


Author(s):  
S. M. Afazov ◽  
A. A. Becker ◽  
T. H. Hyde

The paper reviews a development of mathematical algorithms and implementation of mapping residual stress profiles from microscale to macroscale finite element (FE) models. A shot-peening simulation of Inconel 718 is conducted using the finite element method (FEM) to obtain the residual stress profiles which are used as an input in the developed mapping algorithms. Residual stress profiles induced by the shot-peening processes are mapped into different FE models including a perforated plate, a model with a complex surface, and an aero-engine vane component. The mathematical mapping algorithms and formulations are developed for 2D and 3D FE models where residual stress profiles obtained experimentally, numerically, or analytically for different manufacturing processes including shot-peening, water jet machining, milling, turning, roller burnishing, laser machining and peening, electro discharge machining, etc., can be mapped on FE models with complex geometries. The implementation and the results for the mapping techniques are presented and discussed in detail.


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