References

Vision Of The Fjords

Brødrene Aa is pleased to announce that our new sightseeing vessel, Vision of The Fjords, has been delivered to the norwegian operator The Fjords, on Saturday the 16th of July. The new hybrid-electric carbon fiber catamaran is designed and built by Brødrene Aa. The ship is designed to carry 400 passengers and will be operating in Nærøyfjord on the west coast of Norway.

The Seasight design

Seasight is the brand name of this new Brødrene Aa design. It is a premium sightseeing vessel designed from the ground up to enhance the passengers’ sightseeing experience and reduce the vessels environmental footprint.

The exterior is inspired by a twisting mountain road and gives the passengers freedom to walk around the ship while enjoying the scenery. Inside, the vessel has passenger accommodations on two decks, featuring large panoramic windows, seating in a variety of configurations and a large refreshment kiosk on the main deck. Read more about the Seasight design here.

6 Mega Yachts

Y. no. 227, 228, 230, 231, 232 and 234
Client: Brødrene Aa Marine AS

  • Structural design of GRP hull
  • Selection of material
  • Load calculations
  • Strength analysis
  • Engine supports
  • Inspection and supervision during construction
  • Evaluation of non-conformance during construction
  • Documentation, classification, etc.
Read more (PDF)
Eyr Ytterholmen

Eyr Ytterholmen is a carbon fibre ambulance monohull delivered in 2012 to the norwegian operator, Redningsselskapet. It is powered by 2 x VOLVO Penta D13B-C MP m/ IPS 1050 and makes a top speed of 40 knots.

Eyr ytterholmen was the first out of three identical ambulance vessels delivered to Redningsselskapet.

PJ 48m Supersport

More information coming soon..

42 Meter Surface Effect Ship (SES)
  • Two 50 knots passenger fast ferry
  • Client: SEMO Co. Ltd.
  • Built at SEMO Co., Ltd., South Korea
  • Structural design of all GRP work
  • Selection of material
  • Load calculations
  • Strength analysis
  • Engine supports
  • Parts of inspection and supervision during construction
  • Evaluation of non-conformance during construction
  • Complete Drawing-package
  • Documentation, classification, etc.
Read more (PDF)
P42 Hydrolift

Hydrolift P42 SAR is a new rescue vessel designed for high speed operations based on a modular design with focus on a high level of safety, functionality and cost of ownership. The design was developed by Hydrolift (a renowned Norwegian boat manufacturer) and the sister company Eker Design, working closely with the Norwegian Society for Sea Rescue. In addition of being an innovative, efficient and a fast running vessel this new class also has great towing capacity and the possibility of carrying a watercraft. State of the art navigation equipment VHF, double chart plotters, radar and thermal imaging camera is also included.

FiReCo has been a close collaborator and/or subcontractor in the developing process.

Tiderose
Structural Design Of 6, 8 And 9 Meter High Barovanes

Three types of 6, 8 and 9 meter high wing-shaped deflectors in GRP to be towed from a vessel, acting as “paravanes” for the geotechnical equipment towed by the ship has been developed and tested.

Client: Baro Mekaniske Verksted AS

  • Interaction between steel and GRP deflector parts
  • Material selection and manufacturing detail consultancy Laminate lay-up details and basis for design drawings
  • Testing of prototypes
  • Linear and non-linear FE-analysis
  • Design report
Read more (PDF)
Design And Documentation Of Protection Covers For Pipelines Oseberg Sør

Client: NEMO

  • Structural design of GRP cover
  • Material selection
  • FE-analysis of GRP parts and interfaces
  • Analysis of lifting and installation
  • Design report
  • Sketches and basis for production procedures and drawings
  • Production procedures and laminate lay-up details
Read more (PDF)
Design Review, GRP Platform Structure

Holistic study of an offshore deep-sea production platform
Design study, joint venture by Conoco/DuPont and Kværner Engineering

Client: Kværner Engineering
The review included following aspects:

  • Design criteria – technical feasibility
  • Cost and production aspects
  • Principles for impact protection
  • Selection of materials
Read more (PDF)
Design Of Protection Cover For Tune

Client: Nemo Engineering

  • Large Protection structure in two pieces to be used as Expansion Spool Protection Cover for Tune
  • Material selection and laminate lay-up
  • Structural design including FE-analyses of GRP parts and interface
  • Design report
  • Analyses of lifting, installation and in-service loads
Read more (PDF)
Structural Design, Analysis And Testing Of GRP Streamer Winch

Streamer winch for launching and retrieval of streamer cables on geotechnical vessels.

Client: Baro Mekaniske Verksted AS

  • Establish design criteria
  • Establish design loads, based on interaction between streamer cableand GRP structure – non linear load calculation
  • Design calculations and FE-analysis
  • GRP material evaluation and development of production method
  • Testing and verification of structure
  • Strain measurements on cable drum
  • Calculations and FE-analysis of test performance
  • Verification of design parameters and loads during test program, incl.strain gauge measurements
  • Analysis and evaluation of test results
Read more (PDF)
Design And Documentation Of Saddle Structure For Flexible Risers

Client: ABB Offshore Technology AS

  • Structural design of GRP parts
  • FE-analysis of GRP parts
  • Drawing of GRP parts
Read more (PDF)
Design And Documentation Of Protection Covers For Pipelines Valves For Åsgard

Client: KOP/NEMO

  • Structural design of GRP cover
  • Material selection
  • FE-analysis of GRP parts and interfaces
  • Analysis of lifting and installation
  • Design report
  • Sketches and basis for production drawings
  • Production procedures and laminate lay-up details
  • Testing and documentation
Read more (PDF)
Composite Fairing

Client: Safetec Nordic AS

Evaluate the use of composite materials in fairing plates on Tyra West

  • Establish a theoretical overview of necessary laminate thicknesses for different span lengths, different pressure loads and different in-plane loads.
  • Principal design of composite fairings
  • Material selection
  • Evaluation of different fire protection solutions
  • Documentation
Read more (PDF)
Design And Documentation Of Riser Support Tray At Åsgaard

Client: UMOE Anchor Contracting AS
Project management for the EPC contract (FiReCo/NOM)

  • Geometrical design
  • Structural design of GRP tray
  • Material selection
  • FE-analysis of GRP parts and interfaces
  • Design reports
  • Design drawings
  • Production drawings
  • Production procedures
  • Testing and documentation
Read more (PDF)
Fiskemerd

Fiskemerd, Preline AS

Bascule FRP Composite Footbridge – Fredrikstad

Span 56m, Opened 17. May 2003. CFRP and GRP composites in both single skin and sandwich configurations.

Client: Værste AS and Fredrikstad kommune
Design: Griff kommunikasjon AS (www.griff.no)

Built at Marine Composites AS, Arendal, Norway

Read more (PDF)
Bascule FRP Composite Footbridge – Tønsberg

Span 60m. FRP composites in both single skin and sandwich configurations.

Client: Inglingstad & Tørnquist AS
Design: Griff kommunikasjon AS (www.griff.no)

Read more (PDF)
DACOMAT – Damage Controlled Composite Materials

The objective of DACOMAT is to develop more damage tolerant and damage predictable low cost composite materials in particular aimed for used in large load carrying constructions like bridges, buildings, wind-turbine blades and offshore structures. The developed materials and condition monitoring solutions will provide high tolerance for manufacturing imperfections and high capacity to sustain damages. This will enable large composite structures to be manufactured and maintained at low cost.

Read more
Bondship

EU Fifth framework Research programme

  • Design of bonded joints for various lightweight materials
  • Material models for structural design using flexible and rigid adhesives
  • Testing of long and short term adhesive properties for flexible and rigidadhesives
  • Fire protection of bonded joints for marine applications
  • Design, construction and testing of different AC’s from participatingyards
Read more (PDF)

R.K. Joki, T. Thorvaldsen, Analysis to support the in-service monitoring of the repaired structure, European Defence Agency, EDA CAT B project No B1324 GEM1 GP, 2017

R.K. Joki, A.E. Jensen, J. Lilleborge, T. Thorvaldsen, A Modelling Approach for Predicting the Capacity of a Wet Lay-up Composite Scarf Repair of Fiber Reinforced Polymer Laminates, AVT-266 Research Specialists’ Meeting, 41st APPLIED VEHICLE TECHNOLOGY PANEL BUSINESS MEETING WEEK, NATO – 16-18 April 2018.

Luigi Ascione, Jean-Francois Caron, Patrice Godonou, Kees van Ijselmuijden, Jan Knippers, Toby Mottram, Matthias Oppe, Morten Gantriis Sørensen, Jon Taby, Liesbeth Tromp «Prospect for new Guidance in the Design of FRP», JRC Science and Policy Report, 2016.

R.K. Joki, F. Grytten, B. Hayman, B.F. Sørensen, Determination of a cohesive law for delamination modelling – Accounting for variation in crack opening and stress state across the test specimen width, Composites Science and Technology, 128, 18 May 2016, Pages 49-57. R.K. Joki, F. Grytten, B. Hayman, B.F. Sørensen, Determination of Mixed Mode Cohesive Law for Delamination with Large Scale Bridging, 7th International Conference on Composites Testing and Model Identification, 8 April 2015. M. Laulajainen, M. Liius, T. Jokisalo, M. Keinonen, T. P. Jones, T. Thorvaldsen, R.K. Joki, J. San Millan, B. Noordman, J. Jokinen og M. Wallin, State of the art regarding analysis methods for composites and bonded (repaired) structures, European Defence Agency, EDA CAT B project No B1324 GEM1 GP, 2015. R.K. Joki, F. Grytten, B. Hayman, Nonlinear response in glass fibre non-crimp fabric reinforced vinylester composites, Composites Part B: Engineering, Volume 77, August 2015, Pages 105-111.

 Jensen A. E., Lilleborge J., Thorvaldsen T., Thorkildsen H. E., Farsund Ø., and Pran K., ”Creep measurements of steel bolted and pretensioned GFRP composite joint using fibre optic strain sensors”. ECCM15, Venice, Italy, June, 2012.

Jensen A. E., et al., ”Global load estimations for a 75 meter FRP composite SES vessel using a scaled model instrumented with a network of fiber optic sensors ”, FAST 2011, Honolulu, USA, Sept. 2011.

Jensen A. E., Taby J., Torkildsen H. E., Brodtkorp P. A., Weidemann Løvseth S., Sagvolden G., and

Pran K., ”Safe operation of ships using real-time monitoring and statistical predictions” pp. 20.1-12, NATO conference RTO-ATV-164, Bonn, Germany, Oct. 2009.

Jensen A. E., et al., ”Safe operation of ships using real-time monitoring and statistical predictions”, FAST 2009, vol. 3, pp. 295-306, Athens, Greece, Oct. 2009.

Antonsen G., Høyning B., and Sagsveen B., ”Mechanical properties of vacuum infused CFRP-laminates –dependency of fibres, resins and processing parameters”. ECCM13, Stockholm, Sweden, June, 2008.

Høyning B., and McGeorge D. “Survivability of naval composite structures” – EUROPEAN SURVIVABILITY WORKSHOP 2008, Malvern, UK.

Torkildsen H. E., Brodtkorp P. A., Wang G., Jensen A. E., and Skaugen A., ”Investigation of wave loads on a surface effect ship with an extended fiber optic ship hull health monitoring system”, 5th I. W. on Structural Health Monitoring, San Francisco, USA, Sept. 2005.

Vollen M. W., Vikhagen E., Wang G., Jensen A. E., and Haugland S. J., ” application of shearography techniques for vibration characterization and damage detection in sandwich structures”, pp. 21.1-12, NATO conference RTO-MP-AVT-124, Budapest, Hungary, 2005.

R.K. Joki, Failure Mechanisms in Fibre Reinforced Polymer Composites – Experimental and Numerical Analysis, PhD Thesis, Faculty of Mathematics and Natural Science, University of Oslo, 2016, ISSN 1501-7710.

Torkildsen H. E., Grøvlen Å., Skaugen A., Wang G., Jensen A. E., Pran K., and Sagvolden G., “Development and applications of full-scale ship hull health monitoring systems for the Royal Norwegian Navy”, pp. 22.1-12, NATO conference RTO-MP-AVT-124, Budapest, Hungary, 2005.

Jensen A. E. and Wang G., “Finite element analysis of ship hulls for structural health monitoring applications using fiber optic sensors”, pp. 41-48, Proc. of the 2nd E. W. on Structural Health Monitoring, Munich, July 2004.

Vikhagen E., Haugland S. J., Vollen M. W., Vines L., Wang G., and Jensen A. E., “Vibration characterization for damage detection in sandwich structures using shearography techniques”, pp. 917-924, Proc. of the 2nd E. W. on Structural Health Monitoring, Munich, July 2004.

Høyning B., “The Fire Onboard the Composite MCMV Vessel “Orkla”  – The Fire and Lessons Learned” Composites in Fire Conference, Newcastle, UK, Sept 2003.

McGeorge D., Høyning B. ”Fire safety of naval vessels made of composite materials: Fire safety philosophies, ongoing research and state of the art passive fire protection” NATO AVT/RTO specialist meeting, Aalborg, Denmark, 2002.

Jensen A. E., Taby J., Pran K., Sagvolden G., “Full-scale measurements of global loads on SES vessels built in FRP sandwich materials using networks of fibre optic strain sensors”, HIPER 02, pp 234-247, Bergen, Norway, 2002.

Høyning B., “Meeting commercial and military requirements to passive fire protection of composite high speed crafts” Composites in Fire Conference, Newcastle, UK, Sept 2001.

Taby J., Hjelmseth A., Høyning B., ”GRP in Naval applications.  Possibilities and Production Aspects” NATO AVT/RTO specialist meeting, Loen, Norway, 2001.

Jensen A. E., Taby J., and Høyning B.. «Structural design and results from full-scale structural measurement on the RNoN high speed SES “KNM Skjold” «, FAST 2001vol. 3, pp. 143-151, Southampton, UK, Sept. 2001.

Jensen A. E., Taby J., Pran K., Sagvolden G., and Wang G.: «Measurement of global loads on a full scale SES vessel using networks of fiber optic sensors», J. of Ship Research, vol. 45, 3, pp. 205-215, 2001.

G. Wang, K. Pran, G. Sagvolden, G. B. Havsgard, A. E. Jensen, G. A. Johnson and S. T. Vohra, “Ship hull structure monitoring using fibre optic sensors. Smart Materials & Structures 10, 472-478, 2001.

Gastinger K., Løkberg O.J., and Jensen A. E.: «Detection of defects in large FRP composites sandwich construction using ESPI», ErFurt, Germany, 2000.

Høyning B., and Taby J., ”Warship design: The potential for composites in frigate superstructures”, RINA conference, London, UK, 2000

Johnson G. A., Pran K., Sagvolden G., Farsund Ø., Havsgård G. B.,Wang G., Jensen A. E., and Taby T.: «Surface effect ship vibro-impact monitoring with distributed arrays of fiber Bragg gratings», Proc. of Int. Modal Aanalysis Conf. No. 18, pp. 1406-1411, San Antonio, USA, 2000.

Pran K., Johnston G., Jensen A. E., Heggstad K. A., Sagvolden G., Farsund Ø., Chang C. C., Malsawma L., and Wang G.: «Instrumentation of a high-speed surface effect ship for structural response characterization during seatrials», Smart Structures and Materials 2000, Sensor Phenomena and Measurement Instrumentation for Smart Structures and Materials, SPIE vol. 3986, Newport Beach, USA, 2000.

Jensen A. E., Havsgård G. B., Pran K., Wang G., Vohra S. T., Davis M. A., and Dandrige A.: «Wet deck slamming experiments with a FRP sandwich panel using a network of 16 fibre optic Bragg grating strain sensors», Composites Part B: Engineering, vol. 31, pp. 187-198, 2000.

Jensen A. E., ”Damage detection and design verification of FRP sandwich composites using fibre optic strain sensors«. Ph.D. Thesis, no. 2000:42, NTNU, Trondheim, Norway. ISBN 82-7984-065-6

Høyning, B. and Taby, J.: “Fire Performance of Composite Marine Structures in Relation To The IMO High Speed Craft Code” Composites in Fire Conference, Newcastle UK, 1999

Høyning, B. and Taby, J.: “Passive Fire Protection of Structural Composites”, 4.th International Conference on Sandwich Structures, Stockholm, Sweden, 1998

Høyning, B. and Taby, J.: “Fire Safety for Composite vessels: Fire Protection and Structural Integrity – An Integrated Approach” Fast ’97 Conference, Sydney, 1997.

Taby, J. and Høyning, B.: «Application of Multiaxial Reinforcements in the Marine Industry».  Int. Conference : Nautical Construction with Composite Materials, IFREMER; Paris 7-9 dec. 1992.

Taby, J., Johnsen, R. and Høyning, B.: «Composite Materials and Structural Analysis of High Speed and Light Marine Crafts.  A Guide to Materials Selection and Methods of Analysis».  Royal Norwegian Council for Scientific and Industrial Research, MV 01.28551, 1992.