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   Sandwich structures  evaluated  
Sandwich constructions are composite material structures combining low weight, high strength and good dynamic properties. They have a variety of possible applications in railway vehicles and make a contribution to light weight design.
Technology field: Mass reduction
close main section General information
  open sub-section Description
close main section General criteria
  open sub-section Status of development: in use
  Time horizon for broad application: 5 - 10 years
  Expected technological development: highly dynamic
  Benefits (other than environmental): big
  Barriers: medium
  Applicability for railway segments: high
    Type of traction:  electric - DC, electric - AC, diesel
    Type of transportation:  passenger - main lines, passenger - high speed, passenger - regional lines, passenger - suburban lines, freight
    Grade of diffusion into railway markets:
  Diffusion into relevant segment of fleet: (no data)
  Share of newly purchased stock: (no data)
  Market potential (railways): high
close main section Environmental criteria
  open sub-section Impacts on energy efficiency:
  Energy efficiency potential for single vehicle: 2 - 5%
  Energy efficiency potential throughout fleet: 1 - 2%
  Other environmental impacts: ambivalent
close main section Economic criteria
  open sub-section Vehicle - fix costs: strongly dependent on specific application
  Vehicle - running costs: significant reduction
  Infrastructure - fix costs: none
  Infrastructure - running costs: unchanged
  Scale effects: medium
  Amortisation: (no data)
close main section Application outside railway sector
  open sub-section Status of development outside railway sector: in use
  Time horizon for broad application outside railway sector: in 2 - 5 years
  Expected technological development outside railway sector: highly dynamic
  Market potential outside railway sector: high
close main section Overall rating
  open sub-section Overall potential: promising
  Time horizon: mid-term
References / Links:  Bröcker, Rosenberger 1997;  Schuon 1998;  Starlinger, Koch 2000;  Wimmer 2000;  www.hexcelcomposites.com;  www.tifac.org.in;  www.eng.uab.edu
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 date created: 2002-10-09
 
 
© UIC - International Union of Railways 2003
 
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