Materials Literature
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The effects of temperature and glass transition on the corrosion protection behavior of an epoxy/urethane polymer coating on steels was investigated. The polymer experience glass transition at 67 ± 1 °C when heating at 4 °C/min. The ohmic resistance of the coating decreased by 4 orders of magnitude and the coating cap…
Application of hulls processing technologies, based on high-concentrated energy sources (laser and plasma technologies), allow improve shipbuilding production. It is typical for high-speed vessels construction using steel and aluminum alloys with high precision hulls required. Report describes high-performance technol…
Abstract : Gadolinium oxide (GdoG) is an attractive material for solid state neutron detection due to gadolinium's high thermal neutron capture cross section. Development of neutron detectors based on GdaCh requires sufficiently thick films to ensure neutron absorption. In this dissertation work, the process-structure…
First-principles calculations based on the density functional theory showed that the building blocks of the oxygen ε-high-pressure solid phase spontaneously form when oxygen molecules are enclosed within fullerenes and small-diameter nanotubes. The building blocks consist of O 8 clusters, which are able to self-assemb…
An innovative linear levitating system based on MgB2bulks produced by the reactive liquid infiltration method is designed and built. Details of the system are presented. The levitation performance is also evaluated by means of previous experimental data. The linear levitating system consists of four MgB2arc-shaped til…
We discuss a new kind of optical vortex with the angular momentum perpendicular to the flow direction and entangled in that it is a coherent combination of different orbital angular momentum states of the same sign. This entangled state exhibits many unexpected physical properties. The transverse optical vortex can be…
Kuwait currently produces about 3 million barrels of crude oil per day and has a large pipeline network system for handling its oil and associated products (condensate, low pressure and high pressure gas, as well as produced and effluent waters). The total length of the pipeline network is about 4790 Km consisting of…
According to the 2013 Report Card, oil and gas pipelines of the United States of America are in poor condition. Pipelines are proved to be safer and more efficient than the other means of transportation of petroleum products. However, they have failed during their operation and sometimes their failures have caused cat…
A comprehensive study of the effect of HCl and malic acid on electrical transport properties of polyaniline has been reported. Samples are prepared by chemical oxidative polymerization of aniline. Granular morphology and better thermal stability is obtained. Temperature dependence of dc electrical transport can be exp…
The influence of crack speed on dynamic fracture toughness of pipeline steel has been observed in some recent tests, although it is still a challenge to obtain a specific relationship between dynamic fracture toughness and crack speed due to the expensive costs of experiments. Meanwhile, the understanding of the depen…
Corrosion is a common degradation process for most oil and gas pipelines in operation that can lead to leak and rupture failures. To avoid failures due to corrosion, integrity management plans for pipelines require fitness-for-service (FFS) assessments and remaining life analysis of the corrosion features that are det…
Pipeline operators around the world use in-line inspections and corrosion control systems to manage the integrity of their systems. Determining when to inspect is a critical consideration, which depends in part on whether corrosion growth takes place between inspections. Remaining life estimates based on estimated cor…
In the field of defects assessment, mechanical damage severity analysis is an issue of interest for many pipelines operators [1]. Indeed, common literature fatigue criteria [2] [3] [4] [5] often give underestimated dent lifetimes compared with experimental results. This causes repairs which could be avoided, therefore…
A super-martensitic stainless steel of the Fe–Cr–Ni family was investigated for morphological changes during isothermal annealing after subjecting it to different prior conditions. The key issues during thermomechanical treatment included determination of conditions for austenite stability and reversibility and decidi…
Pipeline dents fatigue life prediction is a subject of high interest for pipelines operating companies. Empreinte is an in-house developed pre and post processor to ABAQUS Finite Element Calculations dedicated to pipeline integrity assessment. Empreinte was first developed and experimentally validated for dents assess…
Significant progress has been made in recent years in the development of tensile and compressive strain capacity models. These models, along with various methods of strain demand determination, form the basic building blocks for the strain-based design and assessment (SBDA) of pipelines. At the same time, gaps exist b…
The pyroelectric signal generated by an epitaxial Pb(Zr0.2Ti0.8)O3 film can be enhanced by continuous illumination with ultraviolet (UV) light. The measured signal increases more than 2 times at low modulation frequencies of the incident infrared (IR) radiation (∼10 Hz) and at wavelengths where the short-circuit photo…
Recently a long time discussion among specialists about the meaning of the probabilities of failure (POF) produced by different reliability analysis methods surfaced in pipeline journals. This paper, which was a long time in the making, is a follow-up on the discussion and analyses the actual reliability level which w…
Oil and gas exploration around the world continues at a rapid pace. This rapid pace of oil and gas exploration in North America has been fueled primarily thorough the development of horizontal drilling and the “fracking” process of underground shale formations. The demand for various grades and dimensions of API casin…
Health physics aspects associated with operation of the ITER are investigated. ITER has health physics elements in common with existing facilities as well as unique features. Fusion facility neutron radiation is similar to that encountered in a low energy accel-erator. The tritium hazard has radiation protection issue…