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 Today


The Maritime Industry's original and most viewed E-News Service

Maritime Reporter July 2016 Digital Edition
FREE Maritime Reporter Subscription
Latest Maritime News    rss feeds

Shipbuilding

Ithaca’s FPF-1 platform to be moved to Stella field

Ithaca Energy Inc. reports that the "FPF-1" floating production facility has completed the required inclination test as planned and departed the Remontowa shipyard in Gdansk, Poland.

Live Fish Carrier Launched at Gondan

At high tide, the vessel “MARTIN SÆLE”, the first Live Fish Carrier built by Gondan Shipyard in Figueras, was successfully launched today. Representatives of the owner of the vessel,

Wärtsilä Environmental Efficiency for Hybrid UK Ferry

A new ferry being built at the Cemre shipyard in Turkey for UK operator Wightlink will feature a comprehensive range of modern Wärtsilä equipment and systems to

Marine Materials

Royal IHC, NETICS Join Forces

Royal IHC has entered into a partnership with NETICS, a civil engineering and consultancy agency. A leading global player in engineering with dredged sediments,

SCIGRIP Transforms Hovercraft Assembly Process

Griffon Hoverwork, a designer and manufacturer of technically advanced hovercrafts, has collaborated with SCIGRIP, the global supplier of smarter adhesive solutions,

Shipbuilding’s ‘Fatal Attraction’ – A Dramatic Affair?

Down the years, shipbuilders have always entered and exited the business as cycles have progressed, but over the past decade developments have been dramatic, says Clarksons Research.

 
 
Maritime Security Maritime Standards Naval Architecture Navigation Pod Propulsion Ship Electronics Ship Simulators 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: 0.0696 sec (14 req/sec)