Industrial Consultancy & Sponsored Research (IC&SR) , IIT Madras
Metallic Functionally Graded Materials and Manufacturing Methods thereof
Categories for this Invention
Technology: Metallic functionally graded materials (FGM) & Manufacturing method;
Industry & Application: Defense, Aerospace, rocket heat shields, Marine industry, heat-engine components, Missile Industries, Naval Security/Navy & etc.
Market: The global ballistic protection market is projected to grow at a CAGR of 5.41% during the forecast period (2024-29).
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Problem Statement
- The problem statement discussed in the present invention is how to produce a simplified cost-effective functionally Graded Materials without limitations like expensive manufacturing method & other issues like difficulty in determining the component life, & others.
- Hence, there is a need to address the issue & said invention provides the solution efficiently.
Technology
- Present patent describes a high velocity ballistic device for producing bulk functionally graded materials (FGMs) by impacting projectiles onto a stationery target, the device comprises of
- three tubes
- a high-pressure tube (HPT), a pump tube (PT) and a launch tube (LT);’
- a piston;
- two diaphragms separating the junctions between the three tubes (HPT, PT, and LT);and
- a means to pressurize the high-pressure tube. (Refer Fig.2)
- The velocity of the projectile is controlled by the pressure of air in the high-pressure tube & the diaphragm material & their total thickness.
Operation
- During the pressure inside the high-pressure tube reaches a critical value, the first diaphragm between HPT & PT gets ruptured, pushing the piston forward which develops a very high pressure inside the PT that causes the second diaphragm to rupture, the projectile kept in the LT, just after the second diaphragm, gets accelerated & exits the launch tube at a high velocity to impact the stationary placed at a distance.
Key Features / Value Proposition
- Disclose a simple low-cost method to produce bulk metallic FGMs using Ballistic Impact.
- The method produces bulk FGMs of varying size & shape of the FGMs depending on the capacity of the ballistic setup
- The projectiles, having hemispherical nose of desired radius, length, & suitable weight, are made of metal alloys & others e.g. Aluminum alloys (Al5052). (Refer Fig. 3)
- The diaphragm materials can be of any material & further controlling the velocity of the projectile is achieved by changing the thickness of the diaphragms. (Refer Fig. 4)
- The stationary target may be any strong & solid plate, e.g. an ultra-high molecular-weight polyethylene (UHMWPE) plate.
- Applicable in Security agency, Defense/Military, Aerospace and Missile industries & etc.
Experimental Results:
- A study of the grain refinement & hardness variation was carried out for all the tested projectiles prepared from Al5052 including test results of different specimen of projectiles. (Refer Fig. 1 & Table 1)
Questions about this Technology?
Contact For Licensing
sm-marketing@imail.iitm.ac.in
ipoffice2@iitm.ac.in
Research Lab
Prof. Balakrishna C Rao
Department of Engineering Design
Prof. Ramkumar P
Department of Mechanical Engineering
Prof. Rajesh G
Prof. Murthy H S N
Department of Aerospace Engineering
Intellectual Property
IITM IDF Ref. 2446
Patent Application No. 202241071549
PCT Application No. PCT/IN2023/051170
Technology Readiness Level
TRL-4
Proof of Concept ready, tested and validated in Laboratory