High Efficient Ultrasonic Vibration Transfer Material or Mechanism

Request Number REQ9365580
Due Date February 19, 2018
Request for Proposal Details
RFP Title
High Efficient Ultrasonic Vibration Transfer Material or Mechanism
RFP Description

NineSigma, representing a global engineering company, seeks a technology enabling high efficient transfer of ultrasonic vibration from the outside to the inside of the pipe.


The client pays attention to the value of ultrasound vibration based cleaning technologies, which apply the vibration from outside of the pipe, and remove the grease or scale deposit on the inner metal wall of the pipe on energy plants. To put such technologies into practical use, the client sets a performance target that the vibration penetrated and induced inside the pipe shall be >80% of the emitted strength by the vibrator. They are obtaining a special solution that is running inside the pipe and boosts up the cleaning effect by ultrasound. However, they have not identified technologies that substantially increase the transfer efficiency of the ultrasound from the outside to the inside of the targeted pipe. Similar development effort is starting here and there in the world. Material development for minimizing the transfer loss of ultrasound has been known in other application fields such as medical devices. To leverage external technology partner, the client has issued this request.


Key Success Criteria

Of interest are materials or mechanisms that can minimize the transfer loss of ultrasonic vibration. Proposers are expected to provide sample or prototype. Not only limited to materials or mechanisms but end-to-end solution proposals are also welcome.



  • Target pipes are those that constitute energy plant and have the following specifications with hydrocarbon system, e.g., natural gas or crude oil, as fluid inside.
    • Material: carbon steel*1 or stainless steel*2
      • *1 A-106 Gr.B, A-333 Gr.6 or equivalent
      • *2 A-312 TP316/316L or equivalent
    • Configuration: straight pipe, bend or elbow joint, T-shaped junction, etc.
    • Out diameter 2 to 16 inch; Wall thickness 6 to 22 mm
    • Outer surface: rough and undulated due to aging; no coating is applied
    • Inner surface: grease or scale derived from natural gas or oil is deposited
  • The specification of ultrasonic vibration is considered as follows:
    • Low frequency up to 100kHz*
      • * The application is to remove the bulk grease and scale out from the inner metal wall of the pipe on energy plant to be dissembled or removed.
    • Mounting of vibrator: directly on the outer pipe surface or indirectly on the pipe via material or mechanism (fig. 1).
    • Fig. 1 Mounting of ultrasonic vibrator on pipe (fig1: right image).


  • Shall suppress the end-to-end degradation of the ultrasonic vibration strength within 20%, from the point emitted from vibrators (100%) to the point radiated inside pipe (>80%).
    • Can fill any gap at the contact surface between the vibrator and the pipe
    • Can act as a low-loss transfer route of vibration from the vibrator to the pipe
  • Can be easily mounted or de-mounted on pipes of various configurations or diameters 
    • Use of different solutions depending on the diameter size is acceptable
  •  Shall not be scattered away, decomposed or detached due to vibration or heat.


Possible Approaches


Examples of possible approaches are as follows. Their combinations or any other ideas are also welcome.

  • Materials for filling the gap and increasing the adhesion between the contact surfaces
    • Elastic sheet with a superior ultrasound transfer performance
    • Ultrasound coupling media such as gel
  • Mechanisms for effectively mounting vibrators on the pipe with simple attachment / de-attachment operations
    • Use of clamp mechanism
    • Use of a sheet material wrapping and clinging vibrators on the pipe



Respondents should submit proposals using the attached Response Template.


The client will review submitted proposals and possibly ask clarifying questions before selecting potentially the best candidate(s). The client will select the partner(s) toward the technology development for field application through the small scale experiment with sample or prototype. During the selection, the client may execute non-disclosure agreements (NDA) with the potential candidate(s), seek further information disclosure, and discuss specific development approaches. The client will execute necessary agreement(s) with the partner(s) and kick off the collaboration. Specifics of collaboration will be determined through consultation with the concerned parties.


Preferred Collaboration types
Items to be submitted

Responses will use the Proposal Template which is linked to the “attachments” shown at the bottom of the link and include the following items:

  • Overview of technology
    • Proposal category: material / mechanism / system solution
    • Underlying principle and key features
    • Unique selling point or originality
  • Development stage: verified at lab-scale / prototype developed / commercialized
  • Experience with ultrasonic vibration transfer: Yes / No
    • If yes, the applications and achievements
    • If no, justification of proposed technology
  • Current performance
    • Transfer characteristics of ultrasound
    • Filling ability of the gap or cavity
    • Ease of mounting/demounting
  • Items to be consulted with the client for small scale experiment or technology development
  • Preliminary project fee/budget
  • Papers or brochures on proposed technology


Area of Interest
Request Priority