Preparation and sound transmission loss analysis of carbon fiber composite sandwich panel

Sui, Xianhang; Cong, Qing; Li, Xian‐Hua; Chen, Wenjiong

doi:10.1007/s41204-021-00153-w

Cited by 3 publications

(3 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Then, the error analysis was performed to verify the effectiveness of the improved STL experimental method. First, STL was calculated by equation (12). Second, the overall STL L T was obtained by equation (18).…”

Section: Measurement Processmentioning

confidence: 99%

“…Therefore, researchers conducted some investigations on the acoustic analysis of composite structures. However, the main concerns were sound transmission mechanism, [7][8][9] numerical simulation method, [10][11][12][13] and composite acoustic design. [14][15][16] The influence of thermomechanical behavior on composite structures' STL is still a field of sporadic research.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Analysis of sound transmission loss characteristics of aircraft composite panel under variable temperature environment

Peng

Dong

Yan

2022

Journal of Low Frequency Noise, Vibration and Active Control

View full text Add to dashboard Cite

An improved sound transmission loss (STL) experimental technique based on the sound pressure method (SPM) and acoustic box method is proposed to investigate the temperature influence on the STL of the ribbed carbon fiber reinforced plastics aircraft panel. SPM principle is given. The measurement procedure of the improved STL technique is presented and its reliability is verified. STL variable characteristics of the panel within −40°C–40°C were measured. Results showed that temperature had a significant effect on the panel’s STL. The overall STL varied nonlinearly with temperature, whereas STL exhibited a fluctuation or monotony trend at a single center frequency. Temperature variation caused changes of STL peak/dip frequencies and redistribution of stiffness-controlled, resonance-controlled, coincidence-controlled, and damping-controlled regions. The causes of the aforementioned are given. This study reveals the relationship between temperature, thermomechanical parameters and STL. The findings have applications in the design, measurement, analysis, and theoretical development of composite structure acoustics.

show abstract

Section: Measurement Processmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Analysis of sound transmission loss characteristics of aircraft composite panel under variable temperature environment

Peng

Dong

Yan

2022

Journal of Low Frequency Noise, Vibration and Active Control

View full text Add to dashboard Cite

show abstract

“…According to the existing research [37][38][39], the sound insulation performance of the sandwich panel structure is affected by its structural parameters, and the sound insulation performance can be affected by changing the mass of the sandwich panel. However, for a sandwich panel of the same quality, if the ratio of panel mass to core mass is different, the sound insulation properties may also be affected.…”

Section: Mass Ratio Of Spsmentioning

confidence: 99%

Experimental and Numerical Investigation of Acoustic Performance for Full-Sized SPS

Liu

Jiang

et al. 2022

Shock and Vibration

View full text Add to dashboard Cite

The sound insulation of a sandwich plate system (SPS) was measured by the sound pressure method in fixed support boundary conditions and reverberation sound field. The results were compared with those obtained using the finite element method. The sound insulation curves obtained via experiments and numerical simulation were observed to be in agreement. This indicates that the numerical simulation method can effectively reflect the sound insulation performance of the structure. In addition, the influence of different parameters on the sound insulation performance of the structure was evaluated using the finite element method, and the weight of each parameter in the influence of sound insulation was ranked by applying the function of “fsrftest” in the software MATLAB. It was found that in the low-frequency domain, the length-to-width ratio of the SPS had the most significant effect on the sound insulation performance of the structure, and the mass ratio of the panel to core exerted the least influence on it. Furthermore, in the medium- and high-frequency domain, the main factors affecting the sound insulation were different in the different frequency ranges, and the frequency range should be considered during the design of the structure. The results can provide technical support for the analysis of the sound insulation performance of SPSs.

show abstract

Sound transmission loss of periodic Mindlin plates with non-uniformly spaced mass attachments

Hall,

Sorokin,

Aghamohammadi

et al. 2024

The Journal of the Acoustical Society of America

View full text Add to dashboard Cite

The sound transmission loss (STL) of wall partitions, especially in the coincidence region, is investigated. A Mindlin plate with periodically attached masses in a periodic “supercell” pattern is analyzed theoretically and experimentally for sound attenuation. Modeling the masses as points, analytical expressions for predicting the dispersion relation and frequency bandgaps of the plate are developed. The results show that varying the distances between the masses or the masses themselves can lead to the emergence of additional lower-frequency bandgaps and slightly decrease the bandwidth of the primary complete bandgap. Additionally, a triangular periodic pattern of point masses can provide a larger complete bandgap than the conventional rectangular pattern. The results are validated by numerical analyses using the wave and finite element method. Experimental testing is conducted on large-scale plates (2.4 m × 1 m) with periodically attached masses under diffuse field conditions, demonstrating the benefits of utilizing multiple scattering to increase the STL in the coincidence region of the bare plate. The proposed approach is seen to significantly increase the STL of wall partitions in the coincidence region and provides insights into the fundamental principles of sound and vibration attenuation in complex structures based on multiple scattering.

show abstract

Preparation and sound transmission loss analysis of carbon fiber composite sandwich panel

Cited by 3 publications

References 15 publications

Analysis of sound transmission loss characteristics of aircraft composite panel under variable temperature environment

Analysis of sound transmission loss characteristics of aircraft composite panel under variable temperature environment

Experimental and Numerical Investigation of Acoustic Performance for Full-Sized SPS

Sound transmission loss of periodic Mindlin plates with non-uniformly spaced mass attachments

Contact Info

Product

Resources

About