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  Digital Catalogue for Technology and Products Development

   Technology and Product Development

    Basic Information

Technology developed: Un-bonded fibre reinforced elastomeric isolator (U-FREI) (TP19761407757)
Category: Product(Hardware/Material/Software)
Details of Inventor(s):
Inventor Institution/Organization/Company Department Designation
1. Prof. S.K. Deb et al and 2.Er Nilanjan Ray et 1. IIT Guwahati and 2.MS METCo Pvt Ltd Kolkata 54 Dept of Civil Engg 1.Professor HAG 2.Director
Technical Application Area: Civil Engineering
If 'Other', please specify:
High performance earthquake resistant design Seismic response control protection of buildings using
Please give more details of new technical application area:
Conventionally laminated rubber isolator comprising of elastomer layers interleaved with steel plates as reinforcement and commonly known as steel reinforced elastomeric isolator SREI are used for seismic isolation Steel plates used as reinforcement sheet is heavy and makes up for most of the weight of the isolator Further thick end plates are needed on top and bottom surfaces of the isolators which add additional weight and cost to the isolator Fibre reinforcement is one of the best alternatives of steel shim plates Fibre reinforced elastomeric isolators FREI can be made using layers of rubber bonded with thin layers of bidirectional fibre fabric as reinforcement Further no steel end plates are required and the FREIs are simply placed at the interface between sub and superstructure without any connection Consequently ease of installation is enhanced to a large extent Thus replacing steel with fibre and eliminating the requirements of end plate both weight and cost of isolators are reduced Effectiveness of U FREIs in seismic response control is established on the basis of extensive earthquake simulator testing carried out at IIT Guwahati In this experimental study it is established that UFREIs are highly effective in controlling seismic response of the test model
Indian Institute of Technology (IIT) Guwahati
Affiliated Ministry: MHRD, Govt. of India
Type of technology development: Indigenous
Does the technology help in replacing any import items currently
procured from outside India?
Does the technology have export potential? Yes
Category of Technology developed: Immediate Deployment
Stage of Development: Prototype Level
Please describe in detail including the TRL Level:


Applications: NA
Advantages: NA

    Technology Inputs:

Imported Equipment/Spare Parts:
Equipment/Spare Parts Year ITC-HS Code
Indigenous Equipment/Spare Parts:
Equipment/Spare Parts Year ITC-HS Code
Imported Raw Materials:
Raw Materials Year ITC-HS Code
Indigenous Raw Materials:
Raw Materials Year ITC-HS Code
Existing R&D Facilities used:
Facilities Year ITC-HS Code

    R&D Investment:

R&D investment (Rs. in Lakhs):                    
Indian Source (Rs.) Foreign Source (Rs.) Year
0 0 NA

   Patents & Publications:

Filed Patents (No.) Granted Patents (No.) Year
0 0 NA
Submitted (No.) Published (No.) Year
0 0 NA

    Commercialization Potential:

Who are the Potential Licensees?
What commercially available products address
the same problem?
Company Product Problem Addressed
Would you like to develop this invention further with
corporate research support?
Would you be interested in participating in cluster based
programs for commercialization research or business
planning for your invention?
      Submitted by: Jinti Saikia Date of Submission: 5-8-2020

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