COMPOSITE MPOSITE PATCH PATCH REPAIR REPAIR CO OF METALLIC MARINE STRUCTURES OF METALLIC MARINE STRUCTURES Collaborative Project Call ID FP7-SST-2008-RTD-1– Proposal N° 233969 Acronym: "Co-Patch“ www.co-patch.com Duration: 36 Months (2010 – 2012)
PROJECT PARTICIPANTS TWI UM UniS NTNU SSA BV AS2CON Mettle AIMEN CETENA CARDAMA HRS ISQ NTUA ENP PROJECT COORDINATOR: National Technical University of Athens ( NTUA )
Co-Patch Consortium includes: 3 Universities: • NATIONAL TECHNICAL UNIVERSITY OF ATHENS (NTUA), Greece • NORGES TEKNISK - NATURVITENSKAPELIGE UNIVERSITET (NTNU), Norway • THE UNIVERSITY OF SURREY (UniS), United Kingdom 3 Institutes and Joining Technology Centres: • TWI Ltd., United Kingdom • INSTITUTO DE SOLDADURA E QUALIDADE (ISQ), Portugal • ASOCIACIÓN DE INVESTIGACIÓN METALÚRGICA DEL NOROESTE (AIMEN), Spain www.co-patch.com/partners
2 Ship Classification Societies: • BUREAU VERITAS (BV), France • HELLENIC REGISTER OF SHIPPING (HRS), Greece 4 Shipyards and Shipyard associations: • UMOE MANDAL AS (UM), Norway • ESTALEIROS NAVAIS DE PENISCHE S.A. (ENP), Portugal • FRANCISCO CARDAMA S.A. (CARDAMA), Spain • SHIPBUILDERS AND SHIPREPERAIRS ASSOCIATION (SSA), United Kingdom www.co-patch.com/partners
3 Research and Consultancy Companies: • ALVEUS d.o.o. (AS2CON), Croatia • CETENA S.p.A.(CETENA), Italy • METTLE SARL (METTLE), France www.co-patch.com/partners
Objective of the project: Definition of a new effective repair/reinforcement method for large steel structures with defects Field of application: • Marine (vessels, platforms...) • Civil (bridges, cranes...) Repair of damages caused by: Upgrade of existent structures for: • Fatigue • Sustain new loads • Corrosion • Mitigating initial structural deficiencies Advantages with respect to conventional Critical aspect of composite patches: repair/reinforcement technologies: • Long term performance • No hot work • Application ‘in situ’ • No stress concentrations • Low added weight
Composite patches have been applied successfully on naval ships and offshore platforms : FPSO (Floating Production Storage and Offloading) (Norway) Repair of the cargo tank bulkhead Type 42 destroyer RAN Adelaide Class Frigate Type 21 Frigate (Amazon class) Repair of the food lift trunk Repair of the main deck Repair of the main deck
… and on Civil Constructions: • Hythe Bridge (UK): reduction of the stress • Tickford Bridge (UK): improvement of the load bearing capacity • Slattocks Canal Bridge (UK): improvement of the load bearing capacity • Acton Bridge (UK): reduction of strain and raising of the fatigue life • King Street Bridge (UK): improvement of the load bearing capacity • Corona Bridge (I TA): improvement thermal and impact performance • Christina Creek bridge (USA): raising of fatigue life • Ashland Bridge (USA): reduction of the stress • I nterstate Highway – 704 (USA): improvement of the load bearing capacity • State route 82 (USA): improvement of the load bearing capacity Slattocks Canal Bridge Corona Bridge
PROJECT OBJECTIVES (1) • To demonstrate that Co-Patch leads to the reinforcement of a steel structural member using: 1 – Theoretical analyses – Numerical simulations – Experimental testing 1 Y Z X • To determine, evaluate and quantify the efficiency of Co-Patch reinforcements: – Small scale testing – Medium scale testing – Large scale testing
PROJECT OBJECTIVES (2) • To develop procedures for the design and application of Co-Patch reinforcements • To evaluate existing or develop new sensor based monitoring techniques • To demonstrate the effectiveness of the developed design tools and procedures through full-scale tests • To develop an internationally recognised training programme for personnel
WP1 Specifications WP2 WP3 WP4 Monitoring Lab Tests FE Modelling WP6 WP5 Design Procedures Full Scale Tests WP7 Training Programme
Co- -Patch is organized in eight Work Packages (WP) Patch is organized in eight Work Packages (WP) Co WP # TITLE LEADER WP1 Specification of application cases BV WP2 Monitoring methods & procedures NTNU WP3 Laboratory testing NTUA WP4 Numerical simulation procedures CETENA WP5 Guidelines and design procedures AIMEN WP6 Full scale on site tests BV WP7 Dissemination and exploitation TWI WP8 Management NTUA
Project Work includes: Project Work includes: Materials selection and characterization Materials selection and characterization Mid- -scale scale static and fatigue tests Mid static and fatigue tests Patched plates and beams with defects
Mid- -scale scale long- -term tests term tests Mid long Patched plates with defects
Laminate and application method testing Laminate and application method testing
Numerical analyses of the patch strength Numerical analyses of the patch strength 1 ELEMENTS Z OCT 1 2007 MAT NUM 17:08:21 Y X MX MN -1.65 -1.283 -.916667 -.55 -.183333 -1.467 -1.1 -.733333 -.366667 0 Crack Front 90 Crack Y Z X 80 1 NODAL SOLUTION JUN 14 2007 STEP=1 17:49:16 SUB =6 70 TIME=1 /EXPANDED UZ (AVG) Crack Length α (mm) RSYS=0 DMX =1.835 SMN =-1.835 MX SMX =.028049 60 D-C-1 D-C-2 Z X Y D-C-HLU-1 MN 50 D-C-HLU-2 D-C-VI-1 D-C-VI-2 D-C-HLU-3 40 D-C-HLU-4 Crack Gages Photos -1.835 -1.421 -1.007 -.592957 -.178953 -1.628 -1.214 -.799959 -.385955 .028049 30 0 10000 20000 30000 40000 50000 60000 70000 80000 90000 Number of Cycles
Full- -scale tests scale tests Full
Co- -Patch Consortium Patch Consortium Co would like to would like to extend our Invitation extend our Invitation to join our project as to join our project as an invaluable an invaluable Stakeholder Stakeholder
Participation in the Stakeholder Forum is open to: STAKEHOLDER • Shipyards FORUM • Ship owners • Repair contractors • Classification societies • Insurance companies • Authorities (port, highway, railway...) • Charters Potential benefits for the stakeholder: • Information and immediate update about the development of a new state of the art repair technology suitable for their structures • Immediate, direct and first-hand access to the results of the project • The chance to affect the development of this technology by contributing their corresponding experience, towards a final product which will best fit to their demands and requirements • The potential of creating new business activities • The chance to participate in a forum together with other major European organizations and explore the possibility of future collaborations
Stakeholder forum’s expectation: • To agree on what is needed to approve composite patch repair as long-term repair and what steps are needed to get there • To identify opportunities and document the business case for using composite patch repair (alternative repair methods, cost drivers, decision making) • To create a dialogue on the permanence and (economic) viability of patch repairs • To demonstrate that composite patch repairs or reinforcements can be environmentally stable and therefore, that they can be used as long-term repair measures on steel marine structures and steel civil engineering infrastructure applications • Information and update about their specific repair needs and particularities • Feedback regarding intermediate project results and milestones • Eventually, to make available their structures (ships, bridges, etc.) to apply and test the new technology Possible forms of participation: • Stakeholder Forum • Online discussion • Email discussion • Making available one or more steel structure for Co-Patch repair and monitoring
contactus@co-patch.com www.co-patch.com
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