Mechanical tests of larger structures

In order to determine the response of large and complex structures (composite beams, sandwich panels, floor elements, road safety barriers, etc) to a given set of constraints, two approaches are used at CRM Group:

  • Elementary measurements of the mechanical characteristics of specific parts of the structure, especially at assembly points (spot welds, bolts, screws, adhesive bonds, etc), to feed a numerical model of the complete structure
  • Direct measurement of the full-size structure on a large-scale bending bench

Specific tensile devices

Large scale mechanical bending tests

 

Specific tensile devices

CRM is equipped with two specific tensile machines (INSTRON 250 kN and 50kN with load cells down to 1kN) able to perform various tests (compression, tensile, shear, bending) such as:

  • Direct bending test of some construction or formed elements such as ceiling grid
  • Elementary measurements of the mechanical characteristics of specific parts of the structure, especially at assembly points (spot welds, bolts, screws, etc), to feed a numerical model of the complete structure
  • Detailed characterization of adhesive bonds in glued assembly solutions
  • Shear test of composite panel
  • Behaviour of coatings upon metal deformation°
 

Large scale mechanical bending tests

Design by calculation is often very conservative. Direct mechanical measurements of building solutions at large-scale are necessary to optimise their costs and performances. CRM Group is equipped with a large mechanical bending test equipment:

  • For steel or composite solutions up to 15 m length over 4 m width
  • Up to 7.7 t in static pressure/suction or dynamic test and up to 20 t in static test
  • Equipped with calibrated sensors and accurate handling equipment
  • Performing standardised tests according to EN 14509, Eurocodes and more, or to create dedicated tests upon client’s requirements

Test validation by third party can be performed on request