Você está no menu de acessibilidade

Utilize este identificador para citar ou criar um link para este item: http://acervodigital.unesp.br/handle/11449/9435
Título: 
Digital radiography using digital detector arrays fulfills critical applications for offshore pipelines
Autor(es): 
Instituição: 
  • Nondestruct Testing Lab TenarisConfab
  • Petrobras Engn SL SEQUI CI
  • Universidade Estadual Paulista (UNESP)
  • Universidade Federal do Rio de Janeiro (UFRJ)
  • Fed Inst Mat Res & Testing Radiol Methods
ISSN: 
1687-6172
Financiador: 
  • XYLON International
  • TenarisConfab
Resumo: 
Digital radiography in the inspection of welded pipes to be installed under deep water offshore gas and oil pipelines, like a presalt in Brazil, in the paper has been investigated. The aim is to use digital radiography for nondestructive testing of welds as it is already in use in the medical, aerospace, security, automotive, and petrochemical sectors. Among the current options, the DDA (Digital Detector Array) is considered as one of the best solutions to replace industrial films, as well as to increase the sensitivity to reduce the inspection cycle time. This paper shows the results of this new technique, comparing it to radiography with industrial films systems. In this paper, 20 test specimens of longitudinal welded pipe joints, specially prepared with artificial defects like cracks, lack of fusion, lack of penetration, and porosities and slag inclusions with varying dimensions and in 06 different base metal wall thicknesses, were tested and a comparison of the techniques was made. These experiments verified the purposed rules for parameter definitions and selections to control the required digital radiographic image quality as described in the draft international standard ISO/DIS 10893-7. This draft is first standard establishing the parameters for digital radiography on weld seam of welded steel pipes for pressure purposes to be used on gas and oil pipelines.
Data de publicação: 
1-Jan-2010
Citação: 
Eurasip Journal on Advances In Signal Processing. New York: Hindawi Publishing Corporation, p. 7, 2010.
Duração: 
7
Publicador: 
Hindawi Publishing Corporation
Fonte: 
http://dx.doi.org/10.1155/2010/894643
Endereço permanente: 
http://hdl.handle.net/11449/9435
Direitos de acesso: 
Acesso aberto
Tipo: 
outro
Fonte completa:
http://repositorio.unesp.br/handle/11449/9435
Aparece nas coleções:Artigos, TCCs, Teses e Dissertações da Unesp

Não há nenhum arquivo associado com este item.
 

Itens do Acervo digital da UNESP são protegidos por direitos autorais reservados a menos que seja expresso o contrário.