Estimation of acoustic parameters for metallic and composite configurations with experimental validation.
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| Title: | Estimation of acoustic parameters for metallic and composite configurations with experimental validation. |
|---|---|
| Authors: | Zai, Behzad Ahmed1 (AUTHOR) behzad_zai@pnec.nust.edu.pk, Sami, Saad1 (AUTHOR), Shahzad, Majid1 (AUTHOR), Us Saqib, Najam1 (AUTHOR), Channa, Dilnawaz1 (AUTHOR) |
| Source: | Noise & Vibration Worldwide. Nov/Dec2025, Vol. 56 Issue 10/11, p550-568. 19p. |
| Subjects: | Sound pressure, Composite structures, Scientific method, Soundproofing, Metallic surfaces |
| Abstract: | Acoustic energy is the primary source of vibration input to a Space Launch Vehicle. The Sound Pressure Level produced by high velocity gases can have adverse effect on subsystem reliability if not subsided to an allowable limit. In this research, the theory underlying the transfer matrix approach is described first followed by a description of the experimental setup using Impedance tube. Various results, including the absorption coefficient and normal incidence Transmission Loss are presented for an acoustic insulation of variable Melamine Foam thickness from 25 mm to 70 mm; different Honeycomb / Carbon sandwich; and metallic structures. The results are first estimated numerically using COMSOL and later validated experimentally. The working frequency range is described with the placement of small and large diameter tubes from 31.5 Hz to 8000 Hz. The resonance features are obtained due to sample constraint around its edges. The acoustic characteristics of Melamine Foam with different thicknesses are presented to optimize acoustic insulation blanket within Payload Fairing to protect satellite and other avionics from harmful Sound Pressure Level. Since the primary vibroacoustic environment occurs at the very beginning of a mission, such failures are likely to have a greater mission impact than failures induced by other space environments over time. Consequently, an optimized acoustic insulation is mandatory for Payload Fairing to attenuate acoustic loads up to a desired level. This approach of sound attenuation is equally applicable for other applications which are vulnerable against acoustic loads. [ABSTRACT FROM AUTHOR] |
| Copyright of Noise & Vibration Worldwide is the property of Sage Publications Inc. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
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| Header | DbId: egs DbLabel: Engineering Source An: 188898006 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Estimation of acoustic parameters for metallic and composite configurations with experimental validation. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Zai%2C+Behzad+Ahmed%22">Zai, Behzad Ahmed</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> behzad_zai@pnec.nust.edu.pk</i><br /><searchLink fieldCode="AR" term="%22Sami%2C+Saad%22">Sami, Saad</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Shahzad%2C+Majid%22">Shahzad, Majid</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Us+Saqib%2C+Najam%22">Us Saqib, Najam</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Channa%2C+Dilnawaz%22">Channa, Dilnawaz</searchLink><relatesTo>1</relatesTo> (AUTHOR) – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Noise+%26+Vibration+Worldwide%22">Noise & Vibration Worldwide</searchLink>. Nov/Dec2025, Vol. 56 Issue 10/11, p550-568. 19p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Sound+pressure%22">Sound pressure</searchLink><br /><searchLink fieldCode="DE" term="%22Composite+structures%22">Composite structures</searchLink><br /><searchLink fieldCode="DE" term="%22Scientific+method%22">Scientific method</searchLink><br /><searchLink fieldCode="DE" term="%22Soundproofing%22">Soundproofing</searchLink><br /><searchLink fieldCode="DE" term="%22Metallic+surfaces%22">Metallic surfaces</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Acoustic energy is the primary source of vibration input to a Space Launch Vehicle. The Sound Pressure Level produced by high velocity gases can have adverse effect on subsystem reliability if not subsided to an allowable limit. In this research, the theory underlying the transfer matrix approach is described first followed by a description of the experimental setup using Impedance tube. Various results, including the absorption coefficient and normal incidence Transmission Loss are presented for an acoustic insulation of variable Melamine Foam thickness from 25 mm to 70 mm; different Honeycomb / Carbon sandwich; and metallic structures. The results are first estimated numerically using COMSOL and later validated experimentally. The working frequency range is described with the placement of small and large diameter tubes from 31.5 Hz to 8000 Hz. The resonance features are obtained due to sample constraint around its edges. The acoustic characteristics of Melamine Foam with different thicknesses are presented to optimize acoustic insulation blanket within Payload Fairing to protect satellite and other avionics from harmful Sound Pressure Level. Since the primary vibroacoustic environment occurs at the very beginning of a mission, such failures are likely to have a greater mission impact than failures induced by other space environments over time. Consequently, an optimized acoustic insulation is mandatory for Payload Fairing to attenuate acoustic loads up to a desired level. This approach of sound attenuation is equally applicable for other applications which are vulnerable against acoustic loads. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Noise & Vibration Worldwide is the property of Sage Publications Inc. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1177/09574565251348896 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 19 StartPage: 550 Subjects: – SubjectFull: Sound pressure Type: general – SubjectFull: Composite structures Type: general – SubjectFull: Scientific method Type: general – SubjectFull: Soundproofing Type: general – SubjectFull: Metallic surfaces Type: general Titles: – TitleFull: Estimation of acoustic parameters for metallic and composite configurations with experimental validation. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Zai, Behzad Ahmed – PersonEntity: Name: NameFull: Sami, Saad – PersonEntity: Name: NameFull: Shahzad, Majid – PersonEntity: Name: NameFull: Us Saqib, Najam – PersonEntity: Name: NameFull: Channa, Dilnawaz IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 11 Text: Nov/Dec2025 Type: published Y: 2025 Identifiers: – Type: issn-print Value: 09574565 Numbering: – Type: volume Value: 56 – Type: issue Value: 10/11 Titles: – TitleFull: Noise & Vibration Worldwide Type: main |
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