Year-end Sale % OFF 
Abstract
The work concerns a three-point bending test of beams made of plywood, high density fibre boards, cardboard, and wood-epoxy mass. The goal of the investigation was to determine the effect of thickness and type of wood-based facings on stiffness, strength, ability to absorb, and dissipate the energy of sandwich beams with an auxetic core. The cognitive goal of the work was to demonstrate the possibility of using recycled materials for facings and cores instead of popular wood composites. Experimental studies and numerical calculations were performed on correctly calibrated models. Experimental studies have shown that the beams with HDF facings ( = 1528 MPa, = 12.61 MPa) and plywood facings ( = 1248–1395 MPa, = 8.34–10.40 MPa) have the most favourable mechanical properties. Beams with plywood facings also have a good ability to absorb energy (1.380–1.746 J), but, in this respect, the beams manufactured of HDF (2.223 J) exhibited better capacity. The use of an auxetic core and facings of plywood and cardboard significantly reduces the amount of dissipated energy (0.0093 J, 0.0067 J). Therefore, this type of structures can be used for modeling beams carrying high deflections.
Highlights
Wood-based composites are valued for their technical feasibility, ease with aesthetic configuration, and high strength to density ratio
In relation to beams with facings manufactured using high-density fibreboard (HDF), the modulus of linear elasticity of beams linear elasticity of beams from pentandra (L.) Gaertn (PL)(L), PL(R), and CA is lower by 9%, 18%, and 92%, respectively
In relation to beams with facings manufactured by with facings manufactured by HDF, the MOR of beams from PL(L), PL(R), and CA are lower by 18%, HDF, the MOR of beams from PL(L), PL(R), and CA are lower by 18%, 34%, and 81%, respectively
Summary
Wood-based composites are valued for their technical feasibility, ease with aesthetic configuration, and high strength to density ratio. Their physico-mechanical properties are highly advantageous among other composite materials. Research is concerning the development of novel multilayer panels, where core geometry is being modified or made with the use of new material. Light sandwich panels with a paper core are successfully used in many industries. These materials are commonly used in aeronautics and shipbuilding [1,2,3,4], car industry [5], construction materials, and the furniture industry [6,7,8,9]. Research shows that the overall dimensions of core cells were described by equations that do not include one important factor, which is the cell wall thickness, and treat it as a concise element of the linear wall dimension
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
