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 said.

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 utilize 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 August 2015 Digital Edition
FREE Maritime Reporter Subscription
Latest Maritime News    rss feeds

Shipbuilding

TOTE’s 2nd LNG Containership Launched

Shipping company TOTE and shipbuilder NASSCO on Saturday launched Perla del Caribe, the second of two Marlin Class ships – the first containerships in the world to be powered by natural gas.

ME Production Receives Two Scrubber Orders

ME Production subsidiary Marine Exhaust Technology has been awarded a new contract for the DFDS vessel Finlandia sailing on the route Rosyth-Zeebrugge. The scrubber contract includes design,

MN 100: ContainerTug B.V.

The Company: ContainerTug B.V. is a specialized Dutch naval design engineering and construction company with a strong focus on developing workboats and the evaluation

Marine Materials

Marad Celebrates Deployment of Maritime Fuel Cell Project

The U.S. Department of Transportation’s Maritime Administration (MARAD) today celebrated the launch of field trials for the first prototype hydrogen fuel cell

Thordon Bearings Names New China Distributor

Thordon Bearings Inc. of Canada announced that CY Engineering Co. Ltd. will take over as the new authorized distributor for the People’s Republic of China, including Macau and Hong Kong,

ClassNK to Issue Guidance on Composite Propellers

Classification society ClassNK announced it will release the world’s first Guidelines on Composite Propellers (Part on Manufacturing/Product Inspection) on August 31.

 
 
Maritime Careers / Shipboard Positions Maritime Contracts Naval Architecture Navigation Offshore Oil Pipelines Salvage Ship Simulators Shipbuilding / Vessel Construction Sonar
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: 0.1457 sec (7 req/sec)