Composites

Polymer composites are extensively used in manufacture of lightweight, flame retarded and abrasion resistant components, primarily for the automotive- and aeronautical industries and for household goods. The material property characterization places great demands on machinery, equipment, competence and proximity to industry. SP operates in a variety of different applied fields with a wide range of sophisticated techniques and competences.

Research and method development are performed with use of advanced equipment to further increase the understanding and ability to develop material models. Examples are Digital Image Correlation that reveals local strain, Acoustic Emission that determines early changes in the material and high speed cameras for failure analysis, which can be used for improving material characterization and simulation ability.

It is common that metal structures are replaced by composites which requires other design criteria and safety factors. New design approaches also means customized composite designs which in turn requires material characterization with standardized methods.

A major issue is often the long-term mechanical properties of polymer matrix composites (PMC). These composites are being used in high-performance applications. It is therefore important to understand the time-dependent characteristics of the polymer. The viscoelastic nature of polymers dominates the mechanical properties of polymeric composites. Failure modes such as excessive deformation, creep rupture, and environmental aging are all related to the viscoelastic properties of these composites. Determining these time-dependent properties, and the factors that affect them, is crucial to understanding how a material will perform under harsh conditions.

Examples of SP's expertise, testing and research competence for the different material groups are shown in the table below:

 

Groups of Composite materials

Testing  Competense Research
Petroleum based composites Standard testing 
(ASTM och ISO)
 Mechanical: Research areas:
 
  • Tensile
  • Compression
  • Shear
  • Flexural
  • Adhesion
  • Poissons ratio
  • Elevated temperature

Non standard:

  • Multiaxial
  • Anisotropy
  • Local (microstructural) mechanical properties
  • Large
    components
  • Lifetime and
    durability
  • Chemical properties
  • Microstructure
  • Methos development
  • Determination of material parameters via FEM software
  • Certification
  • Global
    o Load
    o Strain
     
  •  Local
     o Anisotropy
     o Local strain, shear and load
  • Design
  • Lifetime adn durability


Material:

  • Thermosets
    o Epocy
    o Polyester
    o Polyurethanes
  • Thermoplatics

       o Polyamide
       o Polyethene
       o Poly-
          propylene         

 

 

 

  •  Lightweight construction
  • Recycling
  • Transportation
  • FEM

 

EU-projekts:

BESST

 

 

 

 

 

 

 

 

 

 


 

 

 

 

Biofiber and  
nano composites
Standard testing  (ASTM och ISO)  Fiber: Research areas:
  • tenisle
  • Compression
  • Shear
  • flexural
  • Poissons ratio
  • Elevated temperature
  • Non standard:

  • Recycling
  • Multiaxial
  • Anisotropy
  • Local (mictrostructural) mechanical
    properties
  • Lifetime and durability
  • Chemical properties
  • Microstructure
  • Method development
  • Determination of material parameters via FEM software
  • Certifiction
  • Carbon
  • Glass
  • Aramid
  • Basalt
  • Natural

Nano:

  • Clay
  • Tubes
  • Power industry

 

      

Composite building and Construction materials Standard testing (ASTM och ISO) Reinforcement: Research areas:
  • Tensile
  • Compression
  • Shear
  • Flexural
  • Elevated 
    temperature
  • Non standard:

  • Panels
  • Cement
  • Anisotropy
  • Local (mictrostructural) mechanical properties
  • Large components
  • lifetime and durability
  • Chemical properties
  • Microsltructure
  • Method development
  • Determination of material prameters via FEM software
  • Certifiction
  • Reinforceing bars
  • Fiber reinforced composites

Matrices:

 

  • Cement
  • Rock
    • Building and architecture

    EU-projects:

    SESBE


    List of some of the standard testing methods
    ASTM D3410  
    ASTM D6641  
    ISO 14126
    ISO 844
    ASTM D3518
    ASTM D7078
    ASTM D2344
    ISO 1922
    ASTM C393
    ASTM C273
    ASTM D3039
    ISO 527
    ASTM C297

    Related Information

    Business Areas

    RISE Safety and Transport

    Contact Persons

    Nazdaneh Yarahmadi

    Phone: +46 10 516 59 21

    Erland Johnson

    Phone: +46 10 516 56 22

    RISE Research Institutes of Sweden, Phone 010-516 50 00, E-mail info@ri.se

    The RISE institutes SP, Innventia and Swedish ICT have merged in order to become a stronger research and innovation partner for businesses and society.
    During 2017 sp.se will be one of several websites within RISE. Please visit ri.se for more information about RISE.

    Dela den här sidan: