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Sandwich Panels Lab.

Double Skin Metal Surface Sandwich Panels

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In order to complete the certification processes of sandwich panels with double metal surfaces, all of the tests (except fire tests) included in the EN4509 standard are carried out in our laboratory. 

EN 14509

Dimensional tolerances

D.2 Dimensional tolerances
D.2.1 Thickness of panel and joint conformity
D.2.2 Deviation from flatness 
D.2.3 Depth of metal profile
D.2.4 Depth of stiffeners on lightly profiled facings
D.2.5 Length 
D.2.6 Cover width
D.2.7 Deviation from squareness 
D.2.8 Deviation from straightness
D.2.9 Bowing
D.2.10 Pitch of profile 
D.2.11 Widths of rib and valley

Durability testing method for sandwich panels

B.2 Test DUR1 
B.3 Test DUR2
B.5 Adhesive bond between faces and prefabricated core material (wedge test)
B.6 Repeated loading test
B.7 Thermal shock test

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Testing procedures for material properties

A.1 Cross panel tensile test
A.1.5.1 Cross panel tensile strength (fCt)
A.1.5.2 Tensile E-modulus of the core (ECt) 
A.1.6 Cross panel tensile modulus at elevated temperature 
A.2 Compressive strength and modulus of the core material
A.2.5.1 Compressive strength (fCc)
A.2.5.2 Compressive E-modulus of the core (ECc) 
A.3Shear test on the core material
A.3.5.1Shear strength of the core material (fCv) 
A.3.5.2 Shear modulus of the core material (GC)
A.3.6 Test procedures, calculations and results – long term loading
A.4 Test to determine the shear properties of a complete panel

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Testing procedures for material properties

A.5 Test to determine the bending moment capacity of a simply supported panel
A.5.5.3 Determination of the wrinkling stress (σw) of a flat or lightly profiled face or the local buckling stress of a profiled face
A.6 Determination of the creep coefficient (φt)
A.7 Interaction between bending moment and support force.
A.8 Determination of apparent core density and mass of panel
A.9 Test for resistance to point loads and repeated loads
A.10 Calculation method for the determination of the thermal transmittance of a panel (U)
A.11 Water permeability – resistance to driving rain under pulsating pressure
A.12 Air permeability
A.13 Airborne sound insulation
A.14 Sound absorption
A.15 Support reaction capacity at the end of a panel

WhatsApp Görsel 2024-12-22 saat 14.23.43_a28704fd
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