Auditory performance of reproduced sound field in aircraft cabin mock-up by feedback controlled multichannel least-square equalization method

Yu, Yong Chang; Zheng, Xu; Liu, Lianyun; Qiu, Yi; Dai, Zheng; Cui, Yi

doi:10.1016/j.buildenv.2023.110036

Cited by 2 publications

(1 citation statement)

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“…The main cause is the alteration of sound quality parameters such as loudness, sharpness, and roughness brought on by structural resonance and abnormal noise. Similar sound quality problems also exist in high-speed rail trains, civil aircraft, and household electrical appliances [8,9]. Therefore, the design and control of sound quality should not only address the issue of vibration and sound radiation intensity of machine equipment, but also how to effectively design and control its radiated sound quality.…”

Section: Introductionmentioning

confidence: 97%

Sound Quality Performance of Orthogonal Antisymmetric Composite Laminates Embedded with SMA Wires

Huang

Wang

et al. 2023

Materials

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Orthogonal antisymmetric composite laminates embedded with shape memory alloys (SMAs) wires have the potential to improve the sound quality of vibro-acoustics by taking advantage of the special superelasticity, temperature phase transition, and pre-strain characteristics of SMAs. In this research, space discretion and mode decoupling were employed to establish a vibro-acoustic sound quality model of SMA composite laminates. The association between the structural material parameters of SMA composite laminates and the sound quality index is then approached through methodologies. Numerical analysis was implemented to discuss the effects of SMA tensile pre-strain, SMA volume fraction, and the ratio of resin-to-graphite in the matrix on the vibro-acoustic sound quality of SMA composite laminates within a temperature environment. Subsequently, the sound quality test for SMA composite laminates is thus completed. The theoretically predicted value appears to agree well with the experimental outcomes, which validates the accuracy and applicability of the dynamic modeling theory and method for the sound quality of SMA composite laminates. The results indicate that attempting to alter the SMA tensile pre-strain, SMA volume fraction, and matrix material ratio can be used to modify loudness, sharpness, and roughness, which provides new ideas and a theoretical foundation for the design of composite laminates with decent sound quality.

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Section: Introductionmentioning

confidence: 97%