An excellent dummy-book giving the basic info on the subject, exceptionally helpful and clear. It is indeed the readers' ticket to the world of mechanics of materials which is considered the foundation of all mechanical sciences, having the roots in math and physics. The scope of the book tracks a typical under-graduate course, providing readers with a very thorough introduction.

The readers will get the easy-to-understand explanations, covering the major principles of equilibrium, behavior of materials, geometric compatibility as well as the relation of the stress to the acting forces and movement, fatigue and fracture mechanics, different modes of failure, and many other aspects. The students using this book will be able to do much better on their tests and homework. The content of the book is a very easy reading for any technical class. The book will be very practical and useful for the people willing to understand what exactly they are reading. The readers will get a very quick refresher on the general knowledge as well as a review of the essential topics of statics; they would also sharpen their technical skills.

They will understand all key concepts of mechanics, know how to determinate the problems of statics and grasp the main principles of the strain and stress, deformations and also their interactions. Must have publication for every student and enthusiast of materials' mechanics.

9315 Views 0 Comments Read more

The publication we offer today provides all technical info and relevant data that would be required for the specialists who are actually dealing with the design and analysis of the various piping systems supporting numerous industrial operations, power generating plants and the distribution systems. In their publication the authors have tried to demonstrate how both prediction and management of the loss in pressure should be performed when working with the different piping systems and their associated piping components.

The present volume has drawn together the valuable results of the theoretical and empirical researches together with the reviews done by the recognized industry professionals, including the data required for a selection of the components. The authors have also examined the data obtained during the experiments and the formulas, integrating and organizing them into equations. The results of their prominent work have been presented in the form of the data diagrams and straightforward tables. Moreover, the book will provide readers with the typical problems and proposed solutions, describing the key technical concepts that are so widely applied and have already proven successful in practice. The references and sections proposing some further reading allow the users to explore all the topics that have been covered, in an even greater depth.

8399 Views 0 Comments Read more

Nowadays, the details of the international trade including shipping is growing very complex from year to year - what it actually means is that even the proven industry professionals may sometimes need guidance. The present guidance book was released to supply readers with a clear view of the whole import and export processes and explain all important ins and outs of the international trade as well as the associated insurance matters.

The content of the publication is covering such the important aspects of the business as the  organization of the import and export operations, various documentation and processes relating to the exporting, preliminary considerations, sales and other export documents, export licenses and controls, importing - associated documentation and procedures, preliminary considerations, purchase documentation, import documentation and process, global customs considerations; the readers will also get to know how to determine the proper classification of a particular product, its proper value to be declared and proper country of origin; moreover, specialized importing and exporting are also addressed together with the Incoterms diagram and ISA, i.e. International Sales Agreement; the last chapter of the publication provides users with some of the most popular export and import related internet resources.

4333 Viewing 0 Comments Read more

The intention of the author of this volume was to provide a good and extensive coverage of the essential offshore mechanics concepts with due attention paid to the newly introduced applications of the theory including, but not limited, to the different offshore installations, wind farms, bridges, and many others.

All critical areas of the design and analysis of the commonly used systems and structures have been addressed, providing the really fundamental information for the engineers engaged in the offshore industry. Note that both traditional and new methods have been covered, and different numerical techniques have been dealt with, such as the FEM and CFD. There are many examples and exercises included to track your progress.

The volume can be recommended to the offshore engineering students at higher levels, as well as the professional offshore engineers. All possible offshore environmental conditions have been examined, together with the foundation and mooring analysis, aerodynamic and hydrodynamic analysis, etc. in shore, the number of topics covered by the author makes this title definitely the best choice for the offshore engineering fellows who will benefit from its content.

1462 Viewing 0 Comments Read more

Nowadays, all of the shipyards located in Europe are experiencing serious difficulties In connection with the constantly rising level of the competition affecting the market globally. The author of this volume has performed a perfect and thorough analysis of the situation, trying to investigate such critical areas as the cooperative activities of the market together with the expertise and available experiences.

The due attention was paid to the relationship existing there between the subject aspects as well as the capabilities that normally make the fundamentals of the technical competence of any shipbuilding and ship repair facility. The content of the book is made on the basis of the interviews conducted with more than twenty recognized industry professionals who agreed to share their valuable experience with the future readers.

The volume is arranged in three major parts, the first providing the general information on the shipbuilding industry of today, second one dealing with the commercial relevance of the associated services, and the closing part addressing the future location of the industry. In total, the volume will be of great interest to the people in the industry.

474 Viewing 0 Comments Read more
Drilling Fluid Composition

The composition of the drilling fluid and control of its properties concern every member of the drilling crew because they affect the safety of the workers as well as the success of the drilling operation. How well the composition of the fluid meets well requirements is determined only by performance in the hole. If the fluid fails in some essential function, the composition can be altered to bring about the needed change in properties, provided the relationship between function, composition, and properties is recognized.

The nature of a suspension such as drilling fluid is that fine particles of solid materials are mixed throughout a liquid medium.

In water-base drilling fluids, water is the medium. It is said to be the “continuous phase”. The particles, such as clay, shale, barite, and other solids-are said to be the “dispersed phase”. That part of the drilling fluid in which particles are dispersed so finely as to be invisible when viewed through an optical microscope is called the colloidal, or reactive, fraction. Solids such as sand that remain inactive in the dispersion are referred to as the inert, or non-reactive, fraction. The control of water-base fluids deals mainly with the colloidal fraction, because it is the portion that can be enriched by the addition of clays, improved by chemical treatment, orDrilling Fluid Composition-2 damaged by contamination.

Clays can be defined in a number of ways, but their important characteristic, for drilling mud purposes, is the ability to absorb water and hydrate, or swell. The gelling and swelling qualities of clays give drilling fluid properties that make them different from other viscous liquids such as honey or lubricating oil. This tendency to hydrate, which is greater in some clay than in others, determines whether chemical treatment is needed to achieve the properties desired for a particular drilling situation.

Bentonite, commonly used colloidal clay, is predominantly montmorillonite, a clay mineral that disperses into small particles in water and hydrates, increasing viscosity and reducing filtration. Native clays, on the other hand, usually hydrate only slightly; when added to a fluid, they tend to remain inert, increasing the viscosity of the mud only slightly. Clay yield refers to the number of barrels of drilling fluid with a viscosity of 15 centipoises (cp) that can be obtained from 1 ton of material. The defining value for yield is 15 cp because the critical part of the clay yield curve for all types of mud appears at that point. Additions of clay up to 15 cp promote little viscosity.

Other useful information about a mud can be obtained by considering its clay constituents. For example, about 20 pounds per barrel (lb./bbl.) of bentonite is required to produce a 15-cp viscosity drilling fluid. Such a fluid would contain 6 percent solids by weight, yield 90 bbl./ton, have 2.5 percent solids by volume, and weigh about 8.6 pounds per gallon (ppg).

Drilling Fluid Composition-3The quality of the water used to make up and maintain water-base drilling fluids affects the way fluid additives perform. Clays have the greatest yield in distilled water. Hard water - water that contains large quantities of calcium (Ca) and magnesium (Mg) salts - and brine waters reduce clay yield, usually resulting in poor mud performance. If the makeup water is salt water (having 10,000 or more parts per million [ppm] sodium chloride), native clay and Wyoming bentonite will lose a significant portion of their gelling and viscosity producing properties, and salt water clay may be substituted. Saltwater clays are composed chiefly of attapulgite, which gels and develops viscosity in saturated salt water in much the same way as bentonite does in fresh water.

An understanding of the viscosity characteristics of clay-water mud is extremely important in drilling mud control. Good mud properties can be maintained only by controlling the concentration and quality of low-gravity solids. Solids picked up by the mud during drilling cause mud-treating problems. These drilled solids seldom provide adequate colloidal properties for good mud control; therefore, the nature of the solids already in the mud must be determined before treating the mud.

332 Viewing 0 Comments Read more

It goes without saying that no one would like to be reminded about their accidents, however we shall all understand and accept the importance of learning from mistakes. Nowadays, the maritime navigation is aided by the various technically sophisticated integrated systems of e-navigation installed on board most of the vast majority of modern ships to provide precise positioning of the vessel, as well as detecting and heading functions, all making the navigation much easier than it used to be decades and centuries ago.

But still all ship masters and owners shall possess due knowledge of the risks of collision and/or stranding that remain present and shall be accounted for at all times, since failure to do so can eventually result in the severe and even tragic consequences, although the stranding and collision cases are relatively rare today.

The idea of the author of this brilliant title was to remind readers that it is critically important to effectively manage the above mentioned risks, enabling the ship officers to apply the associated rules in a consistent manner, contributing to the safety of the ship, people on board, and environment. It is a great one for those having enough prescience and determination to go through this collection of selected incidents, and analyze the associated situations and root causes.

500 Views 0 Comments Read more

Nowadays, the activities in the business and law field are becoming one of the integral parts of the day to day operations of any deck officer, and the importance of such operations is increasing from year to year. Considering the newly introduced laws and other regulatory items originating from the ILO, IMO and other world scale entities, as well as the gradually reducing turnaround time, we can now understand the pressure they are subjected.

As it is clear from the title, the present volume is intended to be used for training and self-examining purposes. With its content prepared by the recognized experts, the book will serve as an invaluable training instrument for those preparing to sit for the associated examination.

There are nine major sections in the book, starting with the one on the maritime treaty instruments, such as the SOLAS and MARPOL international conventions, followed by the section on the Flag State, covering the official bodies in the maritime industry. Then, there are sections addressing such important aspects as ship registration, charters, approval of the equipment, crew related requirements, maritime insurance, general average, voyage and all related things including but not limited to the planning, cargo handling, safety communications., and so many others.

343 Viewing 0 Comments Read more
« 1 2 3 4 5 ... 492 493 »
Enter the site
Read Later

    The "Read Later" function allows you to add material to this block with just one click. Just click on the icon and read the articles that interest you at any convenient time.

Top Posts
Rate my site