Dr Pisarski(TWI)has managed projects applying fracture mechanics testing and assessment methods to a wide range of engineering structures including ships, offshore structures, subsea components, pipelines and pressure vessels. (W 24) (1)

Offshore structure = Estrutura offshore

A fine grain structure is an advantage, however the thermal cycles experienced during welding will lead to a reduction in mechanical properties, and a change in grain structure. (W 158) (2)

Grain structure = Estrutura da fibra

While beneficial, PMC applications for large hull structures have certain limitations in size and volume of seamless structural component without using joints. A hybrid hull that consists of both metal and composite structural members potentially enables desirable enhancements of structural efficiency, but robust joining between those heterogeneous structures must be employed. (W 123) (3)

Hull structure = Estrutura do casco

(1) CTOD and pipelines – the past, present and future

Dr Philippa Moore and Dr Henryk Pisarski 

TWI Ltd, Cambridge, UK

Paper presented at the 6th International Pipeline Technology Conference (Rudi’s Pipeline Conference), 6-9 October 2013, Ostend, Belgium. 

(2) Friction stir weld integrity and its importance to the rolling stock industry

Blignault C1, Kallee S W1, Thomas W M1, Russell M J1

Author details

1Friction and Forge Processes Department, TWI, Ltd., UK.

Paper presented at Southern African Institute of Welding (SAIW) conference, Integrity of Welded Structures in the Energy, Processing and Transport Industries in Southern Africa, Gold Reef City, 28-29 May 2008.

(3) Advanced hybrid joining technology

Vladimir M. Shkolnikov, Gabriel J. Hostetter, David K. McNamara, Joseph R. Pickens, Stanley P. Turcheck, Jr. 

Concurrent Technologies Corporation (CTC)

Johnstown, Pennsylvania 15904, U.S.A.

Bruce G. I. Dance 

Paper presented at ASME 28th International Conference on Ocean, Offshore and Arctic Engineering, OMAE 2009, Honolulu, Hawaii, 31 May – 5 June 2009. Paper #79769.