Topic
Sandwich-structured composite
About: Sandwich-structured composite is a research topic. Over the lifetime, 5853 publications have been published within this topic receiving 101126 citations.
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TL;DR: In this article, the dynamic compressive strength of the sandwich panels with shear thickening fluid (STF) filled pyramidal lattice truss cores at high strain rates is compared with that of pure STF as well as the sandwich panel with empty and water filled pyramid truss core by modified split Hopkinson pressure bar (SHPB) apparatus.
37 citations
TL;DR: In this article, the response of aluminium sandwich panels comprising thin foam cores and thin face sheets of low and high yield strength was investigated under three-point bending load, and the effect of skin strength, bending span and core thickness on the failure modes and loads was investigated.
Abstract: The response of aluminium sandwich panels comprising thin foam cores and thin face sheets of low and high yield strength was investigated under three-point bending load. The effect of skin strength, bending span and core thickness on the failure modes and loads was investigated. While the lower strength face sheet is associated with lower failure loads, that decrease is not proportional to the yield strength due to the additional failure mode of face yielding. Theoretical models enabled prediction of the failure loads and elucidated the contribution of each failure mode. Failure maps were subsequently constructed which can be used for the design of foam-cored sandwich panels with very thin face sheets.
36 citations
TL;DR: An analytical study of sound transmission through all-metallic, two-dimensional, periodic sandwich structures having corrugated core is presented in this article, where an equivalent structure containing one translational spring and one rotational spring per unit cell is proposed to simplify the analysis of the vibroacoustic problem.
Abstract: An analytical study of sound transmission through all-metallic, two-dimensional, periodic sandwich structures having corrugated core is presented. The space-harmonic method is employed, and an equivalent structure containing one translational spring and one rotational spring per unit cell is proposed to simplify the analysis of the vibroacoustic problem. It is demonstrated that the core geometry exerts a significant effect on the sound insulation performance of the sandwich, so that one may tailor the core topology for specified acoustic applications. Subsequent analysis of the sound transmission loss (STL) and dispersion curves of the structure leads to fundamental insight into the physical mechanisms behind the appearance of various peaks and dips on the STL versus frequency curves. As the weight, stiffness, and acoustic property of the sandwich structures all change with the alteration of core configuration and geometry, it is further demonstrated that it is possible to explore the multifunctionality o...
36 citations
TL;DR: In this paper, the perforation response and failure of sandwich panels with composite face sheets and aluminum foam core are investigated experimentally in the presence of low-velocity impact.
Abstract: Perforation response and failure of sandwich panels with composite face sheets and aluminum foam core are investigated experimentally in this paper. Quasi-static perforation and low-velocity impact...
36 citations
Patent•
26 Mar 2007
TL;DR: In this article, highly filled polyurethane composite materials are described, which are formed by reaction and extrusion of polyols, one or more di- or poly-isocyanates, and from about 45 to about 85 weight percent of inorganic filler such as fly ash.
Abstract: Polymeric composite materials, particularly highly filled polyurethane composite materials are described herein. Such highly filled polyurethane composite materials may be formed by reaction and extrusion of one or more polyols, one or more di- or poly-isocyanates, and from about 45 to about 85 weight percent of inorganic filler such as fly ash. Certain polyols, including plant-based polyols can be used. Certain composite materials also contain chain extenders and/or crosslinkers. The polyurethane composite material may also contain fibers such as chopped or axial fibers which further provide good mechanical properties to the composite material. Shaped articles containing the polyurethane composite material have been found to have good mechanical properties, such that the shaped articles are suitable for building applications.
36 citations