Formulation of the problem. During construction oil collector, in order to ensure uninterrupted transportation products, it was planned lay an industrial collector made fiberglass pipes. In some areas, repeated depressurization joints occurred. this regard, there a need for comprehensive approach establishing causes aerial situations. The purpose article is analyze impact complex engineering an...

Dynamic analysis of supported pipes conveying pulsating fluid is investigated in Hamiltonian system using precise integration method PIM . First, symplectic canonical equations of supported pipes are deduced with state variable vectors composed of displacement and momentum. Then, PIM with linear interpolation formula is proposed to solve these equations. Finally, this approach’s precision is te...

The objectives of this study were to investigate migration of volatile organic compounds (VOCs) from cross-linked polyethylene (PEX) pipes used for drinking water produced by different production methods, and to evaluate their potential risk for human health and/or influence on aesthetic drinking water quality. The migration tests were carried out in accordance with EN-1420-1, and VOCs were ana...

D. Simić, J. Tepić, V. Gajić, I. Kovačević, B. Lalić, Faculty of Technical Sciences, University of Novi Sad, Novi Sad, Serbia This paper discusses the distribution fl ow of aluminum (Al) alloy pipes, starting with the completion of the manufacturing process and fi nal inspection. The proposed solution considers the use of bar-coded caps produced from recycled polymer materials that are placed o...

Thin films that exhibit spatially heterogeneous swelling often buckle into the third dimension to minimize stress. These effects, in turn, offer a promising strategy to fabricate complex three-dimensional structures from two-dimensional sheets. Here we employ surface topography as a new means to guide buckling of swollen polymer bilayer films and thereby control the morphology of resulting thre...

BACKGROUND Crack pipe sharing can increase health risks among people who use drugs, yet the reasons for sharing these pipes have not been well described. Therefore, we sought to identify the prevalence and correlates of crack pipe sharing among a community-recruited sample of people who use illicit drugs in Vancouver, a setting where crack pipes are provided at low or no cost. FINDINGS Data f...

Because of their wide application in industries requiring high pressure and temperature, manufacturing square and rectangular pipes have attracted more attention than ever before. There are various methods such as extrusion, tensile and stress for manufacturing square pipes. Another method on which studies have focused in recent years is the re-forming of round pipes in order to turn them into ...

Failures in the water distribution network are some most important factors in water losses, water shortage and dissatisfaction of users and secondary pollutions as well. This research aimed to analyze failure in water distribution networks during 2006-2008, for better water management. Daily failure reports in Ahvaz, Iran distribution network during 2006-2008, were collected from emergency depa...

In the present work, structure health monitoring (SHM) of welded steel pipes was used to diagnosis their state via vibration based damage detection techniques. The dynamic quantities such as Frequency Response Functions (FRFs), mode shapes and modal parameters from structural vibration to detect damage were measured, set on linear averaging mode, with a maximum frequency of analysis of 3.2 kHz....

The processes of homogenization and crystallization polymer solutions in cylindrical pipes are considered, which described by the convective-diffusion equation with respect to solution temperature kinetic equations known as thermokinetic nonlinear boundary value problem. A numerical-analytical iterative method for solving this problem is proposed, consists stepwise obtaining depending on a melt...