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SUMMARY:The structural performance of GRFP sandwich panels subjected to co
 mbined thermal cycling and load - Isabelle Paparo\, University of Cambridg
 e
DTSTART:20170210T153000Z
DTEND:20170210T160000Z
UID:TALK71043@talks.cam.ac.uk
CONTACT:Karen Mitchell
DESCRIPTION:Geometrically complex building envelopes are typical in contem
 porary architecture but conventional design approaches involve multiple in
 dependent layers which often become problematic and costly. Sandwich panel
 s consisting of Fibre-reinforced Polymers (FRP) facings bonded to lightwei
 ght cores have successfully been used in other industries and can potentia
 lly provide an integrated\, structurally and thermally efficient solution 
 for complex building envelopes.  The governing design parameter in sandwic
 h structures is typically their flexural out-of-plane stiffness\, as the d
 eflection at serviceability limit state usually constitutes the most onero
 us design constraint. The flexural stiffness of a sandwich structures is v
 ery sensitive to the degree of shear transfer\, and therefore on the quali
 ty of the bond\, between facings and core. It is therefore essential to as
 sess the short and long-term bonding behaviour of the facings and core int
 erface. To do so\, the mechanical properties of GFRP sandwich panels are e
 valuated\, prior to and after artificial ageing\, in order to determine th
 eir structural performance.  The artificial ageing consists of freeze-thaw
  cycles and out-of-plane load applied simultaneously to the GFRP sandwich 
 panels. The artificial ageing is representative of real-world conditions a
 nd the degradation of the sandwich panels is evaluated after 100 ageing-cy
 cles. The specimen is subjected to a constant load (15% or 35% of the expe
 cted failure load)\, which represents realistic service loads on cladding 
 that could induce creep deformation of the foam core. The aged GFRP sandwi
 ch panels are subsequently tested to destruction in a 3-point bending set-
 up to assess the influence of freeze-thaw cycles and constant loading on t
 heir structural performance.
LOCATION: Cambridge University Engineering Department\, LR6
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