scholarly journals Characterisation of Residual Stress due to Fillet Rolling on Bolts Made of a Nickel Base Superalloy

2014 ◽  
Vol 996 ◽  
pp. 670-675 ◽  
Author(s):  
Wei Li ◽  
Shu Yan Zhang ◽  
Saurabh Kabra ◽  
Anton Tremsin ◽  
Brian Abbey ◽  
...  

This paper investigates residual stress due to fillet rolling on bolts made of ATI 718Plus® superalloy. Incremental hole drilling, neutron diffraction and neutron transmission have been used to assess residual stress near the bolt head fillet. A compressive residual stress field was identified in the first 0.5 mm from the surface. Post fillet rolling solution anneal can relieve the residual stress at the fillet.

1998 ◽  
Vol 33 (6) ◽  
pp. 449-458 ◽  
Author(s):  
S Rasouli Yazdi ◽  
D Retraint ◽  
J Lu

The quenching process of aluminium alloys is modelled using the finite element method. The study of residual stress field induced by quenching is divided into two: the thermal and mechanical aspects. In the thermal problem, the general heat conduction equation is solved and the temperature field during quenching is calculated. In the mechanical problem, the calculated temperature field and mechanical properties are used to predict the residual stress field. In this paper, the two different boundary conditions used in the thermal problem are examined. The first is surface convection using the appropriate heat transfer coefficient. The second is the temperature variation measured at the surface of the part. These boundary conditions are compared, and the advantages and the drawbacks of each are shown. The influence of different quenching parameters on the level of residual stress is studied. To validate the quenching modelling, the incremental hole drilling and neutron diffraction methods are used to measure the residual stress field in the studied parts. The hole drilling technique has been adapted to measure the residual stress through a larger thickness of the part. The aim of this paper is the combination of numerical and experimental techniques for the investigation of the through-thickness residual stress field.


2011 ◽  
Vol 317-319 ◽  
pp. 386-392
Author(s):  
Yin Fei Yang ◽  
Ning He ◽  
Liang Li

The unknown and uneven macro-residual stresses in blanks will cause deformation on large-scale component, especially in non-prestretched plates. Based on the retrieval of stress field by measuring stress changes due to the rebalance of stresses after machining, a new idea is proposed in this paper to predict and control the machining deformation of large-scale components. It consists of analysis of the machining deformation, retrieval of macro-residual stress field, and finally optimization of following cutting process. In the retrieval process, the stresses are measured with an improved hole-drilling method and the measured data are then interpolated to 3D stress field.


2012 ◽  
Vol 2012.17 (0) ◽  
pp. 117-118
Author(s):  
Itaru CHIDA ◽  
Rie SUMIYA ◽  
Yomei YOSHIOKA ◽  
Daizo SAITO ◽  
Toru Sawa ◽  
...  

1986 ◽  
Vol 108 (2) ◽  
pp. 87-92 ◽  
Author(s):  
Weili Cheng ◽  
Iain Finnie

A method is proposed for measurement of the hoop stress in an axisymmetric residual stress field in cylinders in which the axial stress is independent of the axial coordinate. The method involves measuring strains at the outside surface while an axial crack is cut progressively from the outside. Experimental results are presented for two short cylindrical rings cut from a long quenched cylinder. Good general agreement is obtained with X-ray and hole drilling measurements of residual stresses.


2015 ◽  
Vol 2015.12 (0) ◽  
pp. _ICOPE-15--_ICOPE-15-
Author(s):  
Itaru CHIDA ◽  
Rie SUMIYA ◽  
Daizo SAITO ◽  
Tetsu SAWA ◽  
Yomei YOSHIOKA ◽  
...  

1994 ◽  
Vol 10 (11) ◽  
pp. 947-954 ◽  
Author(s):  
W. Cao ◽  
M. Khadhraoui ◽  
B. Brenier ◽  
J. Y. Guédou ◽  
L. Castex

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