New Chapters for Ship Structural Design

Two new chapters, authored by Dr. Dominique Beghin are available for purchase as a supplemental CD to the Ship Structural Design book by Owen Hughes. This book is currently under complete revision however since all chapters will not be completed for some time we have decided to offer these new chapters as part of the purchase of the current edition. The chapters are as follows:

Fatigue of Ship Structural Details (new chapter 17)
Like other welded structures made of steel or other metals that are subjected to cyclic loads, Ship structure can fail through fatigue, even though the cyclic loads are lower than those upon which the design is based. Microscopic cracks are initiated that gradually increase in size until, after a certain number of cycles has been experienced, the cracks have become so large that fracture occurs. In other words, fatigue is a process of cycle-by-cycle accumulation of damage in a structure subjected to fluctuating stresses, going through several stages from the initial “crack-free” state to a “failure” state. The most important load effect parameter is the fluctuating component of stress, commonly referred to as stress range. The assessment of the fatigue life of ship structures is a complex task, all the more so as the various contributing factors have generally large uncertainties that are difficult to quantify, in particular when they involve such human factors as workmanship and quality of welding.

Reliability-Based Structural Design (New Chapter 5)
The capacity of a system to operate without major failures, as characterized by its reliability, is ensured by defining performance standards rather than design criteria. Since there are always uncertainties, and hence some risk of failure, it is impossible to make a structure absolutely safe. Instead it can be made only “sufficiently safe,” which means that the risk can be brought down to a level that is considered by society to be acceptable for that type of structure. It is clear that an objective evaluation of the strength of a given structure is an impossible task. As more and more attention is paid to safety at sea as well as to economic considerations, what every designer aims at is an optimized combination of safety and cost. Therefore, a rational design should rely on a statistical basis and the structural design process must provide the means whereby the designer can ensure that the degree of safety meets or exceeds the required level. Application of reliability analysis techniques to the design of ship structures should improve the ship safety by providing clear distinction between resistance and loads, better knowledge of the safety through appraisal of uncertainties, more coherent calculations, and quantification of risks. The chapter addresses the means by which these goals are achieved.

List Set: $150.00; Members: $110.00; Student Members: $85.00

To order please e-mail or call Tommie-Anne Faix at tfaix@sname.org, 201-499-5068.

Register now for the 2008 Offshore Technology Conference (OTC) and join the 70,000+ offshore E&P professionals expected in Houston, Texas, 5–8 May.

New for OTC .08, the more than 300 technical presentations have been expanded to Thursday afternoon. Plan now to extend your stay for these exciting new sessions covering the latest innovations in offshore technology.

Also new in 2008 is the official OTC Bookstore. Browse and purchase from the OTC societies in one, convenient location. Carry your books home with you and avoid costly shipping.

OTC also hosts an array of breakfasts and luncheons that showcase presentations from industry leaders. Seating is limited for breakfast sessions and luncheons. You are encouraged to purchase tickets with advance registration.

Register today at www.otcnet.org/2008.

Chesapeake Power Boat Symposium
March 7-8, 2008

St. John's College
Annapolis, MD
Registration now open! Click here.

High Performance Yacht Design Conference

Auckland, New Zealand
December 2-4, 2008

The New Zealand Division of the Royal Institution of Naval Architects (RINA), together with the University of Auckland, is hosting the third High Performance Yacht Design Conference in Auckland from 2-4 December 2008. This conference will be a venue where naval architects, engineers, designers and researchers can present and hear papers on the current state of high performance yacht and power craft technology. Abstracts are due on 31 March 2008. Visit www.hpyd.org.nz for more details and to register your interest.

STUDENT POSTER COMPETITION
Launch and Recovery of Manned and Unmanned
Vehicles from Surface Platforms 2008
presented by
The American Society of Naval Engineers
May 19- 21, 2008
Annapolis, Maryland at the Sheraton Annapolis Hotel

The Launch and Recovery Conference of Manned and Unmanned Vehicles From Surface Platforms, 2008 represents a unique opportunity for participants to present current cutting edge technology, and discuss progress that has occurred since the 2005 conference. Unmanned vehicles are becoming increasingly integrated into the day-to-day operations of naval and commercial maritime operations, from ocean platform inspection, to search and rescue, to surface and antisubmarine warfare. At the same time the use of small manned vehicles is also on the rise, whether high-speed boats on Coast Guard ships or helicopters on research vessels. The need to operate both manned and unmanned vehicles from the same platform is of increasing importance, and so the means to quickly and safely launch and recover a wide variety of such vehicles – which are evolving at a rapid pace – is an area of intense research and development in both the naval and commercial maritime sectors. Click here for more.

The Junior Engineering Technical Society (JETS) focuses on opening the world of engineering to junior high and high school students, parents and educators. JETS provides information about engineering careers as well as programs and resources that illustrate real-life teamwork and problem-solving skills. SNAME is a participating member of JETS.

Click here to view the January 2008 issue.

• Orientation begins the week of January 28, 2008.
• Classes start the week of February 4, 2008.