Advanced Creep

Coordination of Advanced Creep Activities to Improve Safety and Durability of High Temperature Plant Materials

 

 

 

 

 

 

Advanced Creep project
 
 

 

 


 
 
 

 

 

 


 

 

Acronym:   Advanced Creep

Type of Project:  Thematic Network Supported by the European Commission

Duration:   Four years - September 2001 to September 2005

The latest project of the European Creep Collaborative Committee (ECCC)

Definitions

The term 'Advanced creep' covered the following topics:

·  Creep strain modelling (e.g. to give creep strength at various levels of strain)

·  Stress relaxation behaviour

·  Creep ductility

·  Multi-axial creep behaviour and notch sensitivity prediction

·  Creep property deterioration due to service exposure

·  Creep crack initiation from pre-existing defects

·  Creep data from component tests

 

Introduction

As a generality, the design and safety/performance assessment of plant components used for high temperature applications in the power generation, nuclear, petrochemical, chemical process and other such industries is currently based on their tensile and creep rupture strength. Service experience has shown that the present design codes are generally conservative and that the use of more sophisticated procedures based on 'advanced creep data' can reduce this conservatism. In addition to improving safe performance and extending the life of high temperature components, advanced creep properties provide more effective parameters for the development of new materials.

                         



Advanced creep data are being generated by the European Commission and national funded projects in Europe. However, in the absence of coordination and networking at a European level, the data generated in such projects may vary in terms of quality and overall consistency. The lack of harmonisation of these activities can also be responsible for unnecessary inter-project duplication of effort and a waste of valuable resources. Furthermore, because of differences in terms, terminology and the understanding of such data, the exchange of information between European organisations across national boundaries can be difficult. There was therefore a specific need to harmonise and rationalise the advanced creep data being generated through various European projects.

 

 

 

 

Project Coordination and Secretariat Facilities Provided By

    European Technology Development, UK.

For information, further to that described here, please contact:

 

 

 

Dr I A Shibli
European Technology Development Ltd.
6 Axis Centre, Cleeve Road, Leatherhead, Surrey KT22 7ND, UK.
Tel: +44 (0)1372 363111 (direct)
Fax: +44 (0)1372 363222
E-mail: ashibli@etd1.co.uk
Internet: www.etd1.co.uk