Optimization of structural parameters for the sound absorption performance of a cellular ceramic foam

Abstract

PurposeThe purpose of this paper is to provide an optimization schedule of structural parameters for the sound absorption performance of a cellular ceramic foam in the sound frequency range of 200–4,000 Hz.Design/methodology/approachThe cellular ceramic foam with porosity of about 60–75% and the pore size of about 1–7 mm was successfully prepared by using natural zeolite powder as the main raw material. For this ceramic foam, the sound absorption performance was measured, and the absorption structure was optimized by some important structural parameters. With orthogonal experiment, optimization of structural parameters was found for absorption performance. By means of the range analysis method, the main factor is known to influence the performance of ceramic foam.FindingsThe present ceramic foam may have good absorption performance although at relatively low frequencies of 400–4,000 Hz while structural parameters of sample are appropriately combined. With orthogonal experiment, optimization of structural parameters for the absorption performance was found to be as follows: sample thickness, 25 mm; porosity, 73.5%; pore size, 4–5 mm and air gap depth, 20 mm. To influence the performance, sample thickness is the main factor, air gap depth is the second and both of pore size and porosity would have a relatively slight effect.Originality/valueThis paper presents a method to optimize the structural parameters of a cellular ceramic foam for sound absorption performance by means of orthogonal experiment.

Research progress of piezoelectric polymer PVDF in sound absorption technology

“…Porous sound-absorbing materials are one of the most widely used sound-absorbing materials, which have good sound-absorbing performance in the highfrequency band, including fibers, [99][100][101][102] foam, [103][104][105][106] and particle [107][108][109][110] sound-absorbing materials. Within porous materials, there are a lot of tiny pores that link to the outside world and each other.…”

Sound absorption performance of composite structures from a kind of lightweight ceramic foam with perforated plate

“…Ceramic foams are widely used in engineering fields, and their pore size can be controlled, with the porosity of generally between 20%–95%. They are usually used as functional materials for filtration, separation, air distribution, heat insulation and bioceramics (Buncianu et al ., 2020; Hu et al ., 2014; He et al ., 2022; Sun and Liu, 2021). In addition, they may also be used for sound absorption (Sun and Liu, 2021; Duan et al ., 2012).…”

“…They are usually used as functional materials for filtration, separation, air distribution, heat insulation and bioceramics (Buncianu et al ., 2020; Hu et al ., 2014; He et al ., 2022; Sun and Liu, 2021). In addition, they may also be used for sound absorption (Sun and Liu, 2021; Duan et al ., 2012). Compared with polymer foams, ceramic foams have some advantages, such as high temperature resistance, fire resistance, corrosion resistance and high mechanical strength.…”

Sound Absorption Properties of An Open-Cell Ceramic with A High Occupancy Ratio for Recycling of Sediment from Taihu Lake

“…J.X. Sun et al [7] prepared the cellular ceramic foam by using natural zeolite powder as the main raw material and found that sample thickness is the main factor, air gap depth is the second and both of pore size and porosity would have a relatively slight effect on the performance. The aforementioned results conclusively demonstrate that the physical and mechanical properties of porous materials are contingent upon their microstructures, including pore structure, porosity, pore size, and other factors.…”