Titlebook: Non-destructive Testing and Repair of Pipelines; Evgeny N. Barkanov,Andrei Dumitrescu,Ivan A. Parin Book 2018 Springer International Publi

鴕鳥

金哥占卜者

Identification of Defects in Pipelines Through a Combination of FEM and ANNeural networks (ANNs). A finite element modeling of the monitoring system of the damaged state of the pipeline, which is a fragment of a pipe with a defect and piezoelectric actuators and sensors is carried out. The direct problem is reduced to initial boundary value problem of the theory of elastic

積極詞匯

FIN

Characterisation of Volumetric Surface Defectsue regarding their exploitation and maintenance is the detection and assessment of defects that may develop in the steel pipe wall. Among the most frequent defects are the local metal loss defects (also named volumetric surface defects—VSDs) that are generated by corrosion and/or erosion processes.

persistence

Assessment of the Remaining Strength Factor and Residual Life of Damaged Pipelinesnatural gas) or other fluids are subjected, during their operation, to corrosion processes that may generate on the steel pipe surface local metal loss flaws/defects (also named volumetric surface defects, VSDs). The evaluation of these defects represents an important issue regarding the pipelines e

Occlusion

Assessment of Interacting Volumetric Surface Defectspetroleum products, natural gas, liquefied petroleum or natural gas) or other fluids (water, ammonia, etc.) clusters or colonies of volumetric surface defects (VSDs) can be generated. Each defect from such a colony can interact with the neighbouring defects, such that the stress concentration effect

一大塊

燈絲

escalate

Characterization of Elastic Properties of Metals and Composites by Laser-Induced Ultrasound measurements of the shear and longitudinal ultrasonic pulse are the simplest approach for solution of these tasks. Among the drawback of the traditional ultrasonic methods are narrow bandwidth and necessity of the relatively large volume of the material for testing. Laser excitation of ultrasound i

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