Evaluation of the influence of factors on the material

Sample evaluation methods

  • Visual

    • Color change
      • Gray scale for assessing color change - color fastness tests
      • Visual assessment of changes such as yellowing, fading, chalking, discoloration, turbidity
    • Change of surface
      • Types of defects:
        • Shape, size: change in dimensions, deformations (strains), waviness
        • Surface properties: softening, hardening
        • Appearance: wrinkling, cracking, fracture, blistering, peeling, discoloration, yellowing, delamination, brittleness
        • Other properties: loosening, rattling of installed parts

  • Instrumental

    • Color change
      • Instrumental assessment of color change and its expression in gray scale degrees - color fastness tests
    • Surface change
    • Gloss change
      • Determination of gloss values ​​at angles of 20°, 60° and 85°
    • Change in coating adhesion
      • Cross-cut examination
    • Change in durability
      • Determination of mechanical properties under static tension
    • Change of hardness
      • Determination of hardness by pressing method using a hardness tester (Shore hardness)
    • Changing dimensions
      • Measurements on a coordinate measuring machine
    • Functional tests, examples:
      • Checking the light functions of car lamps
      • Checking the adjustment range of electric car mirrors
      • Checking the defrosting function of car windows
      • Checking the correct display of the image from the industrial camera
      • Carrying out charging/discharging cycles for car batteries