Determination of the elastic constants for the residual stresses calculation from the X-ray method measurement results

2019 ◽  
pp. 57-62
Author(s):  
M.A. Rosanov
Keyword(s):  
Residual Stresses ◽  
Elastic Constants ◽  
Ray Method ◽  
X Ray ◽  
Measurement Results

Determination of X-Ray Elastic Constants of Isotropic Materials With Non-Linear Sin2ϕ Diagrams

1993 ◽  
Vol 37 ◽  
pp. 299-304
Author(s):  
Toshihiko Sasaki ◽  
Yukio Hirose
Keyword(s):  
Residual Stresses ◽  
Stress Analysis ◽  
Elastic Constants ◽  
Axial Stress ◽  
Stress Evaluation ◽  
X Ray ◽  
Stress Components ◽  
Non Linear ◽  
Zinc Nickel

As known well, non-linear sin2ϕ diagrams are observed from materials having either steep gradients of residual stresses paralell to the surface normal of the specimen or tri-axial stress components. Many authors have reported on this problem for several processing such as polishing and grinding etc. The authors also obtained such non-linear data from an electro-plated zinc—nickel alloy. For these cases, the sin2ϕ method is inadequate for the stress evaluation. Much attention has been given to the stress analysis from about 1970s as compared to the X-ray elastic constants for this phenomenon.

Global X-Ray Method for the Determination of Stress Profiles

2002 ◽  
Vol 404-407 ◽  
pp. 19-24 ◽  
Author(s):  
Jean Michel Sprauel ◽  
H. Michaud
Keyword(s):  
Ray Method ◽  
X Ray ◽  
Stress Profiles

scholarly journals Analysis of diagnostic possibilities of radio- logic and CT examination for pelvic injuries in children

1996 ◽  
Vol 3 (2) ◽  
pp. 45-48
Author(s):  
E. M. Kil’dyushov ◽  
I. V. Buromsky ◽  
V. M. Rozinov ◽  
L. E. Kuznetsov
Keyword(s):  
Comparative Analysis ◽  
Morphological Data ◽  
Ray Method ◽  
Diagnostic Reliability ◽  
X Ray ◽  
Ct Examination ◽  
Radiologic Examination ◽  
Pelvic Injuries

The purpose of this report is the determination of the diagnostic reliability of routine radiologic and CT examinations for pelvic injuries in children. The comparative analysis of these examinations and postmortem morphologic studies of pelvic spesimens was performed in 10 children, aged 2-12 years. It was shown that the X-ray method allowed to diagnose only 47.37% and CT method - 76.32% of all real pelvic injuries (by morphological data) in those children. However, the detectability of damage of the structures that formed the anterior pelvic semi-ring was 50% by radiologic examination, and 60% by CT examination, while for the structures forming posterior pelvic semi-ring it was 44.44% and 94.44%, respectively.

EVALUATION OF THE STRESSED DEFORMED STATE OF MAIN GAS PIPELINES RUNNING IN PERMANENTLY FROZEN GROUNDS

2020 ◽  
pp. 58-63
Author(s):  
M. M. Sidorov ◽  
N. I. Golikov ◽  
R. P. Tihonov
Keyword(s):  
Experimental Data ◽  
Calculated Data ◽  
Gas Pipeline ◽  
Loss Of Stability ◽  
Portable Equipment ◽  
Ray Method ◽  
X Ray ◽  
Deformed State ◽  
Pipeline Monitoring

The work evaluates the stress deformed state of the section of the interfield gas collecting main, running in permanently frozen grounds. The object of research is a section of a pipeline with an arched discharge formed as a result of loss of stability as a result of thermal erosion of permanently frozen grounds to disturbance of the vegetation cover. The determination of stresses was carried out by the X-ray method using portable equipment. The experimental data were analyzed with the calculated. The calculated data were obtained by measuring the spatial position of the gas pipeline section. The obtained values of the acting stresses and the estimates of the critical indicators of the gas pipeline monitoring section made it possible to reasonably estimate the stress state. The methodology for determining the acting stresses of pipelines using portable X-ray equipment can be successfully applied to estimate the stressed-deformed state of pipeline systems running in the zone of permafrost.

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