Multi-Scale Strain Measurements of a Particulate Composite Material

Liu, C. T.; Smith, C. W.; Ravichandran, G.

doi:10.1115/imece2002-39285

Cited by 1 publication

(2 citation statements)

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“…For viscoelastic polymer materials, wave sound energy in different frequencies, in general, is believed to result in micro-structure unit motion in the propagate process and, thereby, partial transfer and eventual dissipation of sound energy to thermal energy [11]. However, quantitative research concerning about micro-structures and anechoic mechanisms is difficult and underdeveloped since it involves the interpenetration of many disciplines, such as polymer materials and acoustics.…”

Section: Research On the Microcosmic Sound-absorption Structure And Mmentioning

confidence: 99%

“…Zhang Hongwu et al have used the Multi-scale research method for the analysis of nonlinear micro-macro materials [8], the computation of elastic-plastics [9], and the mechanical analysis of periodic-structure-materials [10].Some scholars have also applied the Multi-scale research method to the elastic research of materials [11]. Tapir et al used Multi-scale modeling and simulation to research dendritic polymers [12].Water anechoic material research aims to indicate the relationship between the parameters of Multi-scale structures and macroscopic performance, and to explain and predict the acoustical behavior of those materials in water [13].…”

Section: Multi-scale Structure Design Problemsmentioning

confidence: 99%

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Review on Multi-scale Structural Design of Submarine Stealth Composite

Qian¹,

Li²

2017

dtetr

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Research on the acoustic stealth structures of submarines primarily strives for low frequency, pressure resistance, and broad frequency domain absorption. The high-quality acoustic stealth coating on submarines is a complicated Multi-scale and multi-component structure, which consists of numerous macro-structures, such as acoustic air-filled cavities, laminated structures, filling components, and micro-phase structures. However, more information regarding how these components with different anechoic mechanisms obtain good results through synergistic work and how their absorption frequencies superpose effectively to realize acoustic stealth in a broad frequency domain is necessary. Understanding these mechanisms is essential to design a novel anechoic structure in a broad frequency domain. Thus, in this paper, research concerning these mechanisms was reviewed. In addition, the design methods and anechoic mechanism of anechoic structures were discussed for different levels, and the primary concerns in this field were summarized. Several suggestions were made for further research.

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Section: Research On the Microcosmic Sound-absorption Structure And Mmentioning

confidence: 99%