A Review on Vibration Damping in Sandwich Composite Structures

Li, Zhuang; Crocker, Malcolm J.

doi:10.20855/ijav.2005.10.4184

Cited by 28 publications

(24 citation statements)

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“…Figure 4f describes that the expansion of the cavity to 20 mm permits the composite shell made of large pores to effectively absorb sound. Comparing to the studies conducted by Li and Crocker (2005) and Arenas (2003), this result seems to be in agreement [34,35].…”

Section: Sound Absorption Coefficientsupporting

confidence: 88%

On the Role of Acoustical Improvement and Surface Morphology of Seashell Composite Panel for Interior Applications in Buildings

et al. 2019

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This manuscript focuses on the acoustical behaviors and surface morphology of seashell waste filler reinforced polyester (SFRP) coverings Anadara granosa Linn, Perna viridis Linn, and Placuna placenta Linn and applications in buildings. Their acoustical performances were observed using an impedance tube using a technique with two and four microphones based on ASTM E1050-98 and ASTM E2611-09. The improvements of acoustical performance were conducted by a coupled resonator inclusion with addition of a fibrous dacron layer and back cavity. The experimental results showed that the resonators and back cavity on the material structure were able to shift the absorption ability at low frequency. The promising wide broadband frequencies performance occurred when the 15 mm Placuna placenta FRP treated with front-tailed cavity without any additional fibrous layer and air gap started from 0.2 at 2.0 kHz. The combination of resonators and fibrous layer on the material structure was able to stabilize the sound transmission loss (STL) in 52–56 dB at a high frequency. On the observation of the simple surface morphology material, it was found that Placuna placenta Linn had the highest damping performances due to the smallest pores and the most carbon compound compared to the others. Therefore, this finding is very useful for building applications.

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Section: Sound Absorption Coefficientsupporting

confidence: 88%

On the Role of Acoustical Improvement and Surface Morphology of Seashell Composite Panel for Interior Applications in Buildings

et al. 2019

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“…The issue is especially interesting when there is a thin coating on the surface of the base [24]. A review of the studies of the damping properties of sandwich type thin-walled elements is given in paper [25]. The reviewed studies consider the influence of an individual damping layer on the overall damping in a package consisting of several thin layers of different thickness.…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

A study of internal friction anomalies in stainless steel with nanostructured plasma coating

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2017

EEJET

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“…Indeed, these material solutions provide high bending stiffness and high damping [1] that are required to, for the least, guaranty the necessary vibro-acoustic performances of the vibrating structure. Several studies investigated numerically and/or experimentally the influence of geometrical and/or material parameters, such as core and metal-skin thickness and composition, on the properties of the composite structure [2][3][4].…”

Section: Introductionmentioning

confidence: 99%

Spatial Patterning of the Viscoelastic Core Layer of a Hybrid Sandwich Composite Material to Trigger Its Vibro-Acoustic Performances

Gallo¹,

Chesnais²,

Ege³

et al. 2018

SAE Technical Paper Series

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With the aim of decreasing CO2 emissions, car producers' efforts are focused, among others, on reducing the weight of vehicles yet preserving the overall vibrational comfort. To do so, new lightweight materials combining high stiffness and high (passive) damping are sought. For panels essentially loaded in bending, sandwich composites made of two external metallic stiff layers (skins) and an inner polymeric (i.e. absorbing) core are broadly used. Now aiming at creating materials by design with a better control of the final performance of the part, the tuning of the local material properties is pursued. To this end, the present work focuses on controlling the spatial in-plane viscoelastic properties of the polymeric core of such sandwich structures. The spatial patterning is achieved using a recently developed UV irradiation selective technique of Room Temperature Vulcanization (RTV) silicone elastomeric membrane, in which the ultraviolet (UV) irradiation dose, curing time and temperature are the process parameters controlling the viscoelastic properties of the polymeric membrane. Finally, a protocol for the realization of architected aluminum -silicone -aluminum composite sandwich panels is proposed. The influence of UV irradiation selective technique is demonstrated by Dynamic Mechanical Analysis (DMA) measurements on the silicone core itself and by the Corrected Force Analysis Technique (CFAT) to measure the equivalent Young's modulus and damping of the sandwich structure over a large frequency band. As a first demonstration application, sandwich beams with different core patterns (homogeneous and heterogeneous) are designed and tested. Furthermore, the analytical formalism developed by Guyader et. al. is used to model the vibro-acoustic performances of the homogenous sandwich beams and fair model-experiments comparisons are obtained. The spatial patterning of the polymer layer is found to successfully affect the local properties of the composite heterogeneous beam as evidenced by the CFAT method. Finally, this work permits the enunciation of guidelines for designing complex architectured systems with further control of the vibro-acoustics performances.

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A Review on Vibration Damping in Sandwich Composite Structures

Cited by 28 publications

References 0 publications

On the Role of Acoustical Improvement and Surface Morphology of Seashell Composite Panel for Interior Applications in Buildings

On the Role of Acoustical Improvement and Surface Morphology of Seashell Composite Panel for Interior Applications in Buildings

A study of internal friction anomalies in stainless steel with nanostructured plasma coating

Spatial Patterning of the Viscoelastic Core Layer of a Hybrid Sandwich Composite Material to Trigger Its Vibro-Acoustic Performances

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