Proceedings of the International Symposium on Fracture Mechanics to be held at the George Washington University, September 11- 13, 1978, will be available through the University Press of Virginia.
This symposium, sponsored by the Office of Naval Research, presents an overview of fracture problems in ship and aircraft structures, as well as an international review of the state-of-the-art in many areas of fracture mechanics research.
Included are results of both theoretical and experimental studies of fracture and fatigue in a variety of materials and structures. Various aspects of fracture are discussed for composites, polymers, ceramics and metallic materials under wide ranges of loading and environment. Fracture mechanics technology is reviewed through fracture case studies, discussions of recent advances in nondestructive flaw detection, and applications to nuclear reactors, gas turbines, and rocket motors.
This book, edited by Drs. N.
Perrone, H. Liebowitz, and D. Mulville, will be available in September.
It can be ordered from the University Press of Virginia, Box 3608, University Station, Charlottesville, Va. 22903, for $25.
The Ship Structure Committee has recently published two new reports of interest to naval architects and engineers who are involved in the sciences of fracture mechanics and strength of materials. SSC-275, "The Effect of Strain Rate on the Toughness of Ship Steels," develops data for a variety of
Abaqus FEA and XFEM for a Weld Redesign Against Fatigue Cracks A century ago this year, the first ocean-going diesel ship in the world, the M/S Selandia, embarked on her maiden voyage. She was a technological wonder, and both her hull and engines were built by Burmeister & Wain (B&W) of Copenhagen, Denmark.
ceramic alumina and Norton BlueFireTM zirconia alumina abrasives, combined with a new high performance bond system for significantly improved grain micro-fracturing. The new Norton NorZon Plus line has also been expanded with the introduction of Norton NorZon Plus Fast Cut Depressed Center Wheels, which provide
OSIL will offer a full fracking monitoring system to enable clients to monitor local water quality before, during and after operations. Hydraulic Fracturing (fracking), where gas is extracted from shale rock, is becoming an increasingly popular means of extracting gas. The implementation of a reliable
increase its hhp, with 48 hours notice, to 19,500-hhp. A process controlled, continuous-mix fluid system permits "on-the-fly" mixing of both acid and fracturing fluids utilizing fresh water or seawater, thus significantly minimizing fluid wastes and reducing material costs. Features include an innovative dynam
Sun Shipbuilding & Dry Dock Company, Chester, Pa. 19013, has made four appointments to its Corporate Science and Technology Division. The company named Gerald Swensson, manager-Machinery Sciences, Thomas Krehnbrink, manager-Hull Sciences, Richard Bicicchi, manager-Material Sciences, and Larry F.
operations. Sixty-four papers will be presented in sessions on drilling, inspection and maintenance, reservoir management, production operations, fracturing, subsea systems, innovative field development, and safety & the environment. The papers were selected by the Conference Committee from more than
Dr. Ian Jordaan, Professor Emeritus and University Research Professor in the Faculty of Engineering and Applied Science at Memorial University, and President of Ian Jordaan Associates, Inc. How did a South African engineering student end up in Newfoundland? I immigrated during the time that Mandela was
and large marine auxiliary configurations. Typical 3512 applications include workboats, fishboats, prime and standby power installations, oil well fracturing, dredges, and cranes. For a free copy of the 3500 Series product bulletin, Write 27 on Reader Service Car
The Marine Index Bureau, New York, the commercial depository for data concerning personnel illnesses and i n j u r i e s for the American merchant marine and affiliated industries, released its 34th annual statistical analysis recently. The analysis covers illnesses and injuries reported to the
3000°C and 10 million psi. Primary uses emerged in metallic bonding, forming, powder compaction and alloy formation, hole drilling, rock fracturing and shearing. Specific examples of the explosive bonding process were illustrated and discussed. Of partic- ular interest to the group was Mr
HISTORY DESIGN EVOLUTION many requirements including reduced carries an intimidating set of new sys- navigation with an ever-changing and consideration for existing harbors and tug handling, dynamic positioning, com- tems and interconnections for controls, ever-moving coastline. In an age where high-conc
OFFSHORE WIND offshore demonstration project in Lake Erie, eight miles surprising for a ? rst-time project. Vineyard Wind needs from downtown Cleveland. It will be the ? rst freshwater the formal Record of Decision (ROD) by BOEM to set its project in North America. It is winding down its regulatory
Technology New & Notable VideoRay wins Navy Deal RV Nanuq Armstrong Marine VideoRay Valeport on Oceaneering Planck Institute for Marine Micro- R/V Nanuq Delivered Freedom The College of Fisheries and Marine biology (MPI) on board the research ROV/AUV Science at the University of Alaska vessel Sonne
OFFSHORE WIND “… in Edgartown, MA, on Martha’s Vineyard, the Edgartown Conservation Commission voted to deny Vineyard Wind the right to bury its transmission cables beneath Muskeget Channel, running through Nantucket Sound. This unexpected “no” vote sent some dif? cult messages. Among many state
Image: Sonardyne German research vessel Sonne and a Wave Glider unmanned surface vessel (USV) were used to harvest data from AMTs. USVs can now also perform GPS-Acoustic measurements. n the recent downturn, one of the measures oil companies During drilling and production activity, sea? oor monitoring
TECH FILES SKF Hydraulic Bolts Damage caused by a propeller shaft with the ? ange connection between the misalignment problem and related ex- two shafts. cessive vibrations and ? ange coupling The team of technicians at the Ham- wear, is remedied with the aid of SKF burg shipyard had identi? ed the
COLUMN INSURANCE A Post-Casualty Rush to Judgment Can be Costly By Randy O’Neill It was a warm and sunny early sum- ‘live’ seemingly from the moment of impact. Local televi- mer morning in an increasingly popu- sion stations hastily dispatched their air and ground news lar and typically busy domestic harbor.
U.S. that can and will help this market out is an increase in the Gulf do so in a barge, these vessels are very important, as is volume of hydraulic fracturing sand being moved. the infrastructure on the rivers upon which they travel. At For open barges, 2016 saw a ? eet decrease of 151 barges a recent
Voices vides the joined-up approach required to operationalize initia- Horizon 2020 tives across Government Departments. Since the launch of the At EU level, there has been considerable support for Irish strategy, the Industrial Development Authority of Ireland, the researchers and SMEs involved in the
COMPLIANCE & AUDIT Many established businesses have used the same surveyors for years. They have a good relation- “ ship with the surveyor and get a good report from him. If your surveyor is part of a company that has more than one surveyor, ask for someone else the next time. New eyes on your vessel
Model Testing Ship-Ice Interactions in the St. John’s Ice Tank n a cavernous room in eration plant and turns on the heat. Their can be dif? cult to ? t all of the electron- Millan. “There could be a particular out- the heart of a research aim is to hit the ice strength target be- ics, sensors, and
design load cases developed for conver- sion analysis. Also, new dent-speci? c DLA cases have been created to maxi- mize the global load components in way of each of the damage locations. The full global hull FEA model has been solved with these new load cases. The local ? ne mesh models have been
View from the Top Titanic the Titanic. You can get a zone that is relatively fracture free, resulting in a signi? cant high-pressure zone. It can tear the plate apart, like with the Titanic. If you have a vessel carrying oil, there might be a signi? cant environmental consequence if the plate tears.
View from the Top The fracture problem is the worst part. It’s very ran- Why is it important for designers to know about dom. Floes can split; features can break in half, bits can peel the mechanics of high-pressure zones in ice- off; there can be local fractures associated with high-pressure structure
hough smaller than the Earth’s liders are one-way vehicles and will not cept utilizes the AUV’s ability to change moon, Jupiter’s moon Europa return to the IceShuttle at the end of a its buoyancy and by that its pitch angle. contains more liquid water mission. For their deployment, a pas- The docking
sea? oor, and the vessel would be moved. Since DP systems tion data, collected as the drillship proceeded across the tank. were designed to operate in open water, signi? cant technol- This information was passed to the ice modelers / software ogy developments and modi? cations are required to enable
3D animation of the largest feature mapped in the Charlie-Gibbs Fracture Zone, extending 3,708m above the surrounding seabed at the opening of the Atlantic Ocean. The shallowest depth is 979m below sea surface, with depths of 4,687m recorded at the base some 20km away. edge of Europe’s marine territories.
Remote Operations this trash from the oceans. Furthermore, there is an estimated complete the task. 3 million shipwrecks and chemical dumps on the sea? oor • Design and manufacture submarines for humans to be needing hazardous material handling and extraction solutions. transported and functionally
Sea? oor Mapping better accuracy and coverage than all previous altimeters,” said Sandwell. Global maps constructed using satellite-derived gravity data will never replace the ships. The resolution of this new method is limited by the ocean depth because the potential ? eld which gets smooth as you go
FERRIES & PASSENGER VESSELS Humpback whale breaching next to state ferry in San Juan Island. ferries cover 10 routes and 20 terminals. WSF operations serve 60 percent of the state’s population, about four mil- lion people. It should therefore come as no surprise that WSF is the largest ferry system in the
the Campos Basin targeted shallow water, pre-salt reservoirs. Several large plays were discovered between late 1970?s until the early 1980?s in pre-salt fractured basalts, sandstones, and coquinas, with coquinas being the primary reservoir. Howev- er, with the discovery of super giant elds in post-salt
SNAME Spring Meeting— (continued from page 15) SYNOPSIS — The paper offers a thorough discussion of the per- formance characteristics of con- ventional and advanced steels available for maritime structures. The authors outline their per- spectives as to the current state of materials technology
independence by the end of this decade, domestic shipyards and ves-sels owners are reaping rewards from this most unexpected turn of events.Hydraulic Fracturing, or fracking, has been the main (and well publicized) cul-prit in the rapid turn of events. While the proliferation of gas has been widely known
(RT) were investigated three years ago. This included evalu- ating of acoustic emissions and acoustic holography. Ultrasonic testing (UT), already in exten- sive use for naval work and pro- visionally allowed by ABS, was confirmed to be the only suitable alternative. ABS hull-weld inspection