The durability and reliability of operation steel pipelines water supply sewage systems is determined in particular by the quality their welded joints, which turn depends both on composition materials used manufacture observance welding technology. impurities transported liquids, can cause corrosive destruction materials, also has a significant impact pipeline systems. These phenomena are espec...

Exploration of new energy resources located in areas of complex ground and ambient climate imposes strict requirements on pipeline material and design. One of the major research issues in such areas is differential ground movement, which, possibly, is associated with large longitudinal straining in addition to plastic circumferential elongation. Hence, common design principles need thorough re-...

Abstract To investigate the influence of global plastic deformations on girth weld defect tolerance in pipelines, a parametric finite element model has been developed. This paper provides an experimental validation of the model. It describes the test setup and instrumentation used for the evaluation of plastic strain fields around a notch in a tension loaded non-welded X65 mini wide plate. LVDT...

Metagenomics, the study of genetic material recovered directly from environmental samples, has the potential to provide insight into the structure and function of heterogeneous microbial communities.  There has been an increased use of metagenomics to discover and understand the diverse biosynthetic capacities of marine microbes, thereby allowing them to be exploited for industrial, food, and h...

Welding is the main method for oil/gas steel pipeline connection, and a large number of girth welds are weak part pipeline. Under extremely complex loads, undergoes significant plastic deformations eventually leads to fracture. A damage mechanics model promising approach, capable describing material fracture problems according stress states materials. In this study, an uncoupled 2D with functio...

Weld shapes significantly impact nozzle safety, and a number of accidents have occurred due to cracking. In order improve weld safety reveal the effect shape on temperature field flowmeters, this study established four types welds, with ten different shapes. Through numerical calculation, in solid domain was systematically studied when flowmeter passed through high-temperature gas. The results ...