Request for Proposal
Status: RFP is Closed

Sound Insulation, Sound-Absorbing, or Vibration-Damping Material Highly Effective in Low-Frequency Band

Request Number
Due Date
Dec 20, 2018
Program Manager

Licensing, joint development, supplier agreement


Verification using experimental vehicle within 2 years


Necessary development expense will be covered
(Details to be discussed).


How to  Apply
  • Click on "Respond", complete the form to the extent possible, and submit along with other attachment files available. 
  • After creating your account for NineSights, your draft will be automatically saved and you can resume later from "Control Center". Please note you do not submit confidential information at this process.
  • This request for proposals in PDF format is available here.


If you have any questions or request, please feel free to contact us at:
RFP was closed on
Jan 2019

RFP Title


Sound  Insulation, Sound-Absorbing, or Vibration-Damping Material Highly Effective in  Low-Frequency Band
RFP Description

NineSigma, representing a major automotive manufacturer, seeks lightweight sound insulation, sound-absorbing, or vibration-damping material that is highly effective in the frequency band of 1,000 Hz or less. We welcome a wide range of proposals from academia to manufacturers which have development capabilities.

Key Success Criteria

The client seeks any one of the following materials which may likely meet the requirements:

  • Sound insulation material
    • Transmission loss in the frequency band of 2001,000 Hz: Mass law + 10 dB or more (see the image below)

  • Sound-absorbing material
    • With material thickness of 25 mm or less, either A or B is met:
      • A. The absorption coefficients below meets both of the two requirements in the frequency band of 200–1,000 Hz:
        • Reverberant sound absorption coefficient: 0.8 or more
        • Normal incidence sound absorption coefficient: 0.4 or more
      • B. Reverberant sound absorption coefficient should be 0.8 or more in an oct band below 500Hz
  • Vibration-damping material
    • Either A or B or C is met in the frequency band of 1,000 Hz or less:
      • A. Loss coefficient at room temperature: 4.0 or more, and transparent
      • B. Loss coefficient at room temperature: 0.3 or more, and a Young's modulus of 2 GPa or more
      • C. The peak gain over the entire frequency band of 2001,000 Hz is reduced by attenuation only, by at least 10 dB.

Since the above technological requirements are highly difficult to fulfill at this point, we welcome proposals which may be able to develop prototypes in approximately 2 years.

Also we welcome proposals of lab-level materials which can significantly improve the current performance of existing sound insulation, sound-absorbing, and vibration-damping materials.

Possible Approaches

Possible Approaches

Possible approaches include, but are not limited to, the followings:

  • Material
    • Polymer in which the damping effect is improved by dispersing microparticles
    • Functional substance that can enhance performances on sound and vibration by being added to a base material
  • Structure
    • Laminated glass inserted with soundproofing film
    • Porous structure, which has a number of pores within a material
    • Helmholtz resonance structure, which consists of multilayer boards with a number of holes
    • Combination of porous structure and perforated structure
Approaches not of Interest

Approaches Not of Interest

The following approach is not of interest:

  • Approach using an additional device, such as active noise canceling
Items to be Submitted


TThe client has been conducting R&D activities on materials and technologies with high performance on sound and vibration. The aim of the activities is to provide users with quiet and comfortable driving environment reducing sounds and vibrations generated in a car. However, their existing network has not allowed them to discover such technologies to develop lightweight materials with high performance on sound and vibration. The client has been struggling to improve those performance over the conventional limit, such as mass law, particularly below 1 kHz.

Therefore, the client has issued this open request globally to further accelerate R&D by incorporating potential technologies and knowledge beyond the existing network, including technologies sought from different fields, such as the architecture and railway industries.


Notes on Response

Proposal shall have clear points and should not include confidential information. Supplemental files may be submitted in addition to the proposal.


Response evaluation

The client will evaluate all responses with the following criteria.

  • Overall scientific and technical merit
  • Approach to proof of concept or performance
  • Economic potential of concept
  • Realism of the proposed plan (action items, timeline, roles, deliverables, cost estimation)
  • Potential for proprietary position
  • Respondents’ capability and related experiences


Anticipated Project Process

After reviewing submitted proposals, the client possibly ask clarifying questions before selecting the most suitable candidates for collaboration. The client will select best candidates through evaluations. During the selection process, the client may execute NDA with selected respondents, seek further information disclosure, and discuss specific development targets or potential opportunities.

The client will execute necessary agreements with the selected respondents and move to the advanced development phase. Specifics of any collaboration will be determined through consultation with the concerned parties.

Area of Interest