Methods of the calculation and experimental determination of the local residual stresses under spectrum development of complex loading

2015 ◽  
Vol 44 (6) ◽  
pp. 531-538 ◽  
Author(s):  
N. A. Makhutov ◽  
M. M. Gadenin ◽  
I. N. Odintsev ◽  
I. A. Razumovsky
Keyword(s):  
Residual Stresses ◽  
Experimental Determination ◽  
Complex Loading

A Method for the Experimental Determination of Residual Stresses in Axisymmetric Composite Cylinders

1992 ◽  
Vol 114 (1) ◽  
pp. 90-96 ◽  
Author(s):  
F. G. Rammerstorfer ◽  
F. D. Fischer
Keyword(s):  
Residual Stresses ◽  
Experimental Determination ◽  
Arbitrary Number ◽  
Analytical Procedure ◽  
Circular Cylinders ◽  
Composite Cylinders ◽  
Long Cylinder

An analytical procedure applicable for the experimental determination of initially existing residual stresses in long composite circular cylinders is derived within the framework of the drilling and turning technique. The method is demonstrated for a long cylinder composed of two different materials. An extension to cylinders composed of an arbitrary number of circular cylindrical layers can easily be derived in analogy to the described procedures.

Residual Stresses Generated by the Combined Burnishing - Cutting Process in the Worked Parts

2014 ◽  
Vol 657 ◽  
pp. 103-107 ◽  
Author(s):  
Gheorghe Brabie ◽  
Gheorghe Mustea ◽  
Bogdan Chirita
Keyword(s):  
Magnesium Alloy ◽  
Residual Stresses ◽  
Experimental Determination ◽  
Experimental Investigations ◽  
Machined Surface ◽  
Combined Process ◽  
Part Surface ◽  
Working Parameters ◽  
Compressive Residual Stresses

The cutting followed by burnishing, used like a combined process, leads to the improvement of the part surface quality (roughness, hardness, microstructure etc.) and to reduction of the costs and manufacturing times as a function of different working parameters. One of the factors and parameters that characterize the machined surface by this combined process is the residual stresses that are generated and located in the part deformed strata. The present paper analyses the results concerning the experimental determination of the residual stresses generated in the machined surfaces of parts made from magnesium alloy by the burnishing - turning combined process. The experimental investigations have shown that in the machined strata the combined process determines the occurrence of the compressive residual stresses and hence the fatigue and cracking resistances of the machined materials will be improved.

Determination of Residual Stresses after Tensile Tests and Deep Drawing of Unstable Austenitic Steel

2005 ◽  
Vol 490-491 ◽  
pp. 690-695 ◽  
Author(s):  
M. Reda Berrahmoune ◽  
Sophie Berveiller ◽  
Karim Inal ◽  
Etienne Patoor ◽  
Christian R. Simon ◽  
...  
Keyword(s):  
Residual Stresses ◽  
Deep Drawing ◽  
Complex Loading ◽  
Tensile Tests ◽  
Loading Path ◽  
X Ray Diffraction ◽  
Martensite Content ◽  
Different Temperatures ◽  
Kinetics Of

The main objective of this work is to contribute to the study of the 301LN unstable austenitic stainless steel by determining the distribution of residual stresses after deep drawing, taking into account the phase transformation. In the first part, kinetics of martensitic transformation are determined for uniaxial loading. Tensile tests are performed at different pre-strains at room temperature for two different strain rates. The austenite/martensite content is measured by X-ray diffraction and is coupled with the determination of residual stresses distribution. In addition, to establish a relation between the complex loading path effect and the residual stresses state, deep drawing are done for different drawing ratios for two different temperatures. Macroscopic tangential residual stresses are determined by the separation technique. It appears that the residual stresses increase with increasing drawing ratios and the maximum value is located at middle height of the cup.

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