Estimation of residual strength of pipeline's elbow with volumetric corrosion defect, which is developing
Journal Title: Праці Одеського політехнічного університету - Year 2017, Vol 3, Issue 53
Abstract
Pipelines are used as one of the most practical and low cost methods for transmission of different liquid petroleum products and gases. Damage on the pipeline is capable to appear during operation due to the accumulation of fatigue and arising of corrosion. The Aim is estimation the residual strength of pipeline's elbow with volumetric surface defect development of which is modeled in time. Deformed state assessment of damaged elbow of pipelines was held in the framework of computer modeling by using finite-element method (FEM). Corrosion damage modeled explicitly as volumetric defect on the outside of the knee pipeline. Based on the results of the study the assessment of the residual strength of pipeline with increasing surface defects in operation from 10 to 45 years has been obtained. Besides, the areas in which there is localization of maximum equivalent stresses and respectively plastic deformation depending on the size of damage were defined. By obtained results may be noted that after 37 years of operation the pipelines with the corresponding defect on surface cannot withstand the maximum load.
Authors and Affiliations
O. O. Larin, K. E. Potopalska
Keywords
Related Articles
- EP ID EP311551
- DOI 10.15276/opu.3.53.2017.02
- Views 147
- Downloads 0
The role of ecological safety in ergonomics development
The problem of a necessity of application of ecological safety aspects for increasing of ergonomics decisions effectiveness is considered. Actuality of the marked problem is conditioned by the presence of close intercomm...
Application of the statistical approach in diagnosing in medical and biological researches
The task of diagnosis in biomedical research in a number of cases can be solved using a statistical approach. Current research is the possibility of using statistical analysis to diagnose the state of the human respirato...
Simulation model of instantaneous electrical and power parameters of mode and quality of electricity for DC traction power systems
The nature of the electricity consumption in TPS makes the loading of traction substations. On the basis of previous studies of qualitative characteristics of the DC traction power system, the shortcomings related to wor...
Improving the reliability of pulsed laser rangefinder and infrared devices of homing and surveillance by final electron beam processing of their optical components
To prevent the negative impact of external thermal actions on reliability of devices for measurement and thermal testing of objects of various physical nature the practical importance has electron beam processing of surf...
Global position system sensor model for robotics simulator
Today there is acute problem of automatic navigation for different types of robots, unmanned vehicles and people. Increasing number of robotic vehicles requires them to have more accurate navigation in the environment. D...