This paper is focused on the assembly of lightweight sandwich panels built upon patented ‘Opencell’ structure concept. The objective to investigate possibility joining connection members core adjoining skin sheet by plastic deformation at ambient temperature, instead welding or adhesive bonding. methodology draws from earlier developments authors in forming using mortise-and-tenon concept exper...

This paper presents a novel method for rapid fabrication and prototyping of low-density carbon fiber sandwich panel cores based on laser beam cutting (LBC). Using LCB, sandwich panels with lattice core constructions with oblique and vertical strut morphologies were fabricated from two fiber-orientation architectures. Scanning electron microscopy images illustrate the relatively small extent of ...

Many industries use honeycomb composites extensively, including the aerospace, automotive, furniture, packaging, and logistic sectors. A specific type of composite material known as a sandwich is created by joining two stiff but thin skins to lightweight dense core. The strong bending stiffness overall low density are made possible core material's larger thickness despite its typical strength. ...

Aluminum lamination was performed to improve the physical and mechanical properties of several wood-based composite panels. The panels were aluminum-laminated on two faces in a hot press at 689 kPa and 120 °C for 6 min. Four types of wood-based composites were used as cores, and aluminum 3003 alloy sheets were used for face laminations. Polyurethane adhesive ensured bonding strength between the...

In this paper an experimental-numerical approach is presented to tackle the vibro-acoustic characterization of composite sandwich structures. A novel experimental setup allows for fast and comprehensive understanding of the NVH behaviour of composite sandwich panels. This information can then be further exploited in numerical model updating and design tools for optimized solutions. Experimental...

Nomex honeycomb is used as the predominate core material in aerospace standard sandwich structure. To provide aerospace standard composite face sheets it is necessary to cure the sandwich structure in an autoclave at elevated pressure. The honeycomb material is capable of withstanding the forces experienced through its thickness, but the lateral forces applied by the elevated pressure cause a c...

Structurally porous metal sandwich panels consisting of dense face sheets and porous cores of controlled relative density can be manufactured by trapping inert gas during hot isostatic pressing and modifying its distribution via subsequent thermomechanical forming. A plane-strain solution for analyzing the open-die forging of such a plastically compressible sandwich panel is developed. An effec...

This paper aims at demonstrating the feasibility of Glass Fiber Reinforced Polymer (GFRP) systems for low-profile bypass roadways, in particular, sandwich panels comprised of GFRP facings and a Fiber Reinforced Foam (FRF) core. With the purpose of investigating the performance of the sandwich construction, an experimental program, including static and dynamic fatigue tests, was performed. The s...

Flax fibres reinforced polymer composites are more and used in various fields such as transportation due to the low density of flax paired up with good mechanical properties. This calls for a better understanding prediction behaviour composites. In this study, fabric has been studied experimentally numerically composite laminates Omega stiffened Sandwich Panels. Composites plies exhibited stron...

Abstract Sandwich panel constructions are getting popular from the second half of 20 th century however, restraint provided by sandwich panels in regards to instability structural members was not investigated at elevated temperature, which became scope research introduced this paper. An experimental test series conducted Department Structural Engineering Budapest University Technology and Econo...