an important issue in power generation and petrochemical industries is the monitoring of pipe wall thickness and corrosion/erosion rate. the pipes are usually subject to erosive and/or corrosive environments and any failure could be catastrophic. while periodic manual ultrasonic thickness measurement is the common practice in many industries, in certain cases, where higher accuracies are requir...

A design of back-to-back tapered line transition is presented. The transition is suitable for application in feeding arrays of double-side printed antennas. Tapered transmission lines are transmission line whose characteristic impedance is tapered from one value to another. Back-to-back circuits of identical transitions are designed, measured, and their characteristics are compared with theoret...

Pipe dreams represent permutations pictorially as a series of crossing pipes. Recent applications of pipe dreams include the calculation of Schubert polynomials, fillings of moon polyominoes, and in the combinatorics of antidiagonal simplicial complexes. These applications associate pipe dreams to words of elementary symmetric transpositions via a canonical mapping. However, this canonical mapp...

An extensive product range is mandatory to be a key player in the pipe insulation market. The polyurethane preinsulated pipe producers are responding to global opportunities by diversifying their activities into industrial, marine, oil and gas applications. Moreover, the requirements for traditional district heating preinsulated pipes including initial thermal conductivity and its ageing perfor...

The efficiency of drill string largely depends on the pipe-end connector’s accuracy named tapered thread tool joint. Most those are made by using lathes. Turning tools were with a profile identical to profile, and all well-known world brands’ plants make back rake angle such cutter zero value. This is obviously due lack precise algorithm for calculating ensuring profile. A virtual experiment wa...

Pipelines in the offshore sector make common use of polypropylene (and other polymer) coating systems to protect infrastructure and provide thermal insulation. High pressure high temperature pipelines are subject large axial loads due restraint by seafloor soils strains pipe wall. Friction between material soil plays a defining role build-up stress formation lateral buckling. Accurate quantific...

Modern countries utilise buried pipelines for the long-distance transportation of water, oil, and gas due to their efficiency continuity delivery receiving locations. Due soil movements such as landslides, excessive earth pressure imposed on causes damage and, consequently, leaking liquids, gases or other harmful effluents into soil, groundwater, atmosphere. By using a large-scale physical mode...

Different failure modes should be carefully analyzed to effectively design the pipe-in-pipe (PIP) repair systems rehabilitate natural gas and water pipelines in place service. This study characterizes through analytical numerical modelling of different performance objectives have a comprehensive understanding overall behavior PIP with range thicknesses elastic moduli. It focused on assessing st...