New Fatigue Model Leads to More Durable Ships

Marinelink.com
Tuesday, April 23, 2013
The model allows for the development of lighter structures, and as a consequence, more energy-efficient ships.

Heikki Remes, a researcher at the Aalto University in Finland, has developed a model making it possible to determine how fatigue sets in with various welded steel materials. The model allows for the development of lighter structures, and as a consequence, more energy-efficient ships.

 

 By utilizing modern manufacturing technology and new materials, it is possible to achieve more efficient structures than the ones that currently exist. In addition, better physical models are needed to ensure structural strength, Remes says.

 

At present the fatigue measurements used by classification societies are based on the average quality of the weld. The same design guideline is used both with traditional and more advanced structures. However, through the development of manufacturing technology, it is possible to achieve characteristics for welded joints that are significantly better than average. With the models that have been developed, it is possible to consider the difference between traditional and advanced structural joints and the impact on fatigue resistance.


The study has been published in the International Journal of Fatigue. The findings of the study can be used extensively in establishing models for fatigue endurance of various developed welded steel structures. The goal is to predict fatigue endurance more accurately and to utilise material in the final product more efficiently.
 

The work is linked with a project of the Academy of Finland on fatigue in thin sandwich panel structures and with the BESST EU project to promote the competitiveness of the European shipbuilding industry. Also under preparation are national development projects within the Finnish Metals and Engineering Competence Cluster (FIMECC). The work also supports the national maritime industry research strategy commissioned by the Federation of Finnish Technology Industries.


The research has received funding from the Academy of Finland, Tekes, STX Europe, and the Finnish Maritime Foundation, Light project – Finnish Metals and engineering Competence Center.

Maritime Reporter May 2015 Digital Edition
FREE Maritime Reporter Subscription
Latest Maritime News    rss feeds

Technology

Kongsberg Contracted to Support FLNG Conversion

Kongsberg Maritime secures position in the LNG market with electrical and automation contract for Golar Hilli FLNG   Keppel Shipyard in Singapore and Black & Veatch in the U.

New Power Optimization Solution for LNG Carriers

NAPA and DSME launch tailored NAPA-DSME Power Solution for LNG carriers; leading LNG carrier shipyard offers specialized performance monitoring solution   South Korean shipbuilder,

Design & Operation: Wind Farm Support Vessels

Offshore wind farm development has been led globally by the UK, followed by Germany. Both countries have governments with long term commitments to renewable energy.

Ship Repair & Conversion

Unicom Selects the Ecochlor BWTS for 10 Tankers

Ecochlor, Inc. announced that Unicom Management Services (Cyprus) Ltd. (Unicom), acting for SCF Group, signed a 10-vessel agreement for the Ecochlor Ballast Water Treatment System (BWTS) in Limassol,

Kongsberg Contracted to Support FLNG Conversion

Kongsberg Maritime secures position in the LNG market with electrical and automation contract for Golar Hilli FLNG   Keppel Shipyard in Singapore and Black & Veatch in the U.

Crowley to Manage 4 Jones Act Ships for Pasha

Crowley Maritime Corp.’s ship management group has been awarded a new contract with Sunrise Operations LLC, a subsidiary of The Pasha Group, of San Rafael, Calif.

Environmental

Unicom Selects the Ecochlor BWTS for 10 Tankers

Ecochlor, Inc. announced that Unicom Management Services (Cyprus) Ltd. (Unicom), acting for SCF Group, signed a 10-vessel agreement for the Ecochlor Ballast Water Treatment System (BWTS) in Limassol,

Crowley’s 2nd LNG ConRo Ship Ahead of Schedule

Shipbuilder VT Halter Marine, Inc. announced construction has started early for the second liquefied natural gas (LNG)-powered ConRo ship, Taíno, for Crowley Holdings, Inc.

Overnight Cruise Ship Visits Suspended in White Bay

The New South Wales (NSW) Port Authority has suspended all overnight cruise ship visits to White Bay until the NSW Environment Protection Authority (EPA) has regulated

Energy

Kongsberg Contracted to Support FLNG Conversion

Kongsberg Maritime secures position in the LNG market with electrical and automation contract for Golar Hilli FLNG   Keppel Shipyard in Singapore and Black & Veatch in the U.

Statoil Awarded Licenses Offshore Nicaragua

Statoil informs it was today awarded four licenses offshore the Nicaraguan Pacific, covering an area of about 16,000 km2 in the largely unexplored Sandino Basin.

US Oil Contango Vanishing as Supply Glut Shifts Abroad

The U.S. oil market is on the brink of returning to a more bullish footing known as backwardation for the first time in six months, with the discount for prompt

News

Unicom Selects the Ecochlor BWTS for 10 Tankers

Ecochlor, Inc. announced that Unicom Management Services (Cyprus) Ltd. (Unicom), acting for SCF Group, signed a 10-vessel agreement for the Ecochlor Ballast Water Treatment System (BWTS) in Limassol,

Wage Row Between Argentine Crushers, Companies Reaches Crunch Point

Pressure grew on Friday for a resolution to wage talks between exporters and striking crushers in Argentina's Rosario grains hub, with another powerful union threatening

Kongsberg Contracted to Support FLNG Conversion

Kongsberg Maritime secures position in the LNG market with electrical and automation contract for Golar Hilli FLNG   Keppel Shipyard in Singapore and Black & Veatch in the U.

Vessels

Unicom Selects the Ecochlor BWTS for 10 Tankers

Ecochlor, Inc. announced that Unicom Management Services (Cyprus) Ltd. (Unicom), acting for SCF Group, signed a 10-vessel agreement for the Ecochlor Ballast Water Treatment System (BWTS) in Limassol,

Crowley to Manage 4 Jones Act Ships for Pasha

Crowley Maritime Corp.’s ship management group has been awarded a new contract with Sunrise Operations LLC, a subsidiary of The Pasha Group, of San Rafael, Calif.

New Power Optimization Solution for LNG Carriers

NAPA and DSME launch tailored NAPA-DSME Power Solution for LNG carriers; leading LNG carrier shipyard offers specialized performance monitoring solution   South Korean shipbuilder,

Software Solutions

New Power Optimization Solution for LNG Carriers

NAPA and DSME launch tailored NAPA-DSME Power Solution for LNG carriers; leading LNG carrier shipyard offers specialized performance monitoring solution   South Korean shipbuilder,

IRS Moves Closer to Tokyo MOU's High Performers

The Tokyo Memorandum of Understanding has positioned the International Register of Shipping (IRS) closer to the higher ranking achievers on its performance list,

SENER holds a FORAN seminar in Wuhan, China

The ‘FORAN new modules, new functions and FEM-Link (Hypermesh) Seminar’ was held on April 23rd in Wuhan. SENER is playing a big role in China, where it has been

 
 
Maritime Careers / Shipboard Positions Maritime Contracts Naval Architecture Offshore Oil Pod Propulsion Port Authority Ship Electronics Shipbuilding / Vessel Construction Sonar Winch
rss | archive | history | articles | privacy | contributors | top maritime news | about us | copyright | maritime magazines
maritime security news | shipbuilding news | maritime industry | shipping news | maritime reporting | workboats news | ship design | maritime business

Time taken: 0.2485 sec (4 req/sec)