Tensile Testing

 

Tensile (or tension) testing is a fundamental materials science test in which a sample is subjected to a controlled static tension until failure. The results from the test are commonly used to select a material for an application, for quality control, and to predict how a material will react under other types of forces.

To gain high quality testing results the fabrication and preparation of the specimen in particular must be done with great care. Cap strips of +/-45° oriented tapes prevent unacceptable clamping area failure. The requested highly accurate manufacturing of the rims of the specimen can be achieved by strictly following the order of fabrication (cutting the specimen after applying the cap strips). Using diamond blades or CNC milling machines are state of the art.

Specimen with 0° (parallel) and 90° (transversal) fibre orientation are used to determin the values needed for material characerisation concerning stiffness and strength.

Tensile Test of flat specimen using DIN EN ISO 527-4:1997-07

  • Standard test method for determination of tensile properties of fiber reinforced composite materials
  • Isotroptic and anisotropic FRC
  • Fiber orientation: 0°, 90°, 0°/90°
  • Geometry of specimen: 250mm x 25mm x 2mm
  • Doublers: 50mm x 25mm x 2mm ((+/-45°-fiber orientation)
  • Strain gauges: 2 pc per specimen in longitudinal direction

Tensile Test of flat specimen using DIN EN ISO 527-5:2010-01

  • Standard test method for determination of tensile properties of fiber reinforced composite materials
  • Unidirectional FRC
  • Fiber orientation: 0°
  • Geometry of specimen: 250mm x 25mm x 2mm
  • Doublers: 50mm x 25mm x 2mm ((+/-45°-fiber orientation)
  • Strain gauges: 2 pc per specimen in longitudinal direction

Tensile Test of flat specimen using DIN EN 2561:1995-11

  • Special test method for determination of tensile properties of fiber reinforced composite materials for aerospace
  • Tensile test parallel to fiber orientation
  • Fiber orientation: 0°
  • Geometry of specimen: 250mm x 15mm x 1mm
  • Doublers: not necessary if clamping force is tracked
  • Strain gauges: 2 pc per specimen in longitudinal direction

Tensile Test of flat specimen using ASTM D 3039-14

  • Reference test method for determination of tensile properties of fiber reinforced composite materials
  • Unidirectional laminates
  • Tensile test parallel to fiber orientation
  • Fiber orientation: 0°, 90°, 0°/90°
  • Geometry of specimen: 175 or 250mm x 15 or 25mm x 1…2,5mm
  • Doublers: 50mm x 25mm x 2mm ((+/-45°-fiber orientation)
  • Strain gauges: 2 pc per specimen in longitudinal direction