Industrial Consultancy & Sponsored Research (IC&SR) , IIT Madras
Technology Category/ Market
Category – Materials Testing and Microfabrication
Applications- Microelectromechanical Systems (MEMs)
Industry – Aerospace and Defense, MEMs
Market- Global Microelectromechanical Systems Market is estimated to reach $48.5 Billion by 2030 at a CAGR of 8.2%.
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Problem Statement
- The standard test procedure involves subjecting specimens to tension until they fail, with a specified grip separation.
- Elevated or reduced temperature testing is conducted using a thermal chamber integrated with the universal test machine, allowing controlled temperature environments.
- The thermal chamber uses electric heaters for elevated temperatures and external carbon dioxide gas for reduced temperatures, but it has limitations on maximum elongation.
- Specimens used in the procedure can be die-cut, machined, or molded and are typically dog bone-shaped.
Technology
- The present invention is a technique for preparing small or micro dog-bone specimens for testing tensile properties of small samples.
- The technique involves polishing a small strip of material, typically a metal like Al6061-T6, to create two smooth and parallel surfaces.
- The strip is then placed between templates, clamped, and manually polished to achieve the dog-bone shape with precise dimensions.
Key Features/ Value Proposition
Precision Fabrication:
- This method enables the precise fabrication of dog-bone shaped micro-specimens for mechanical testing, ensuring accurate and consistent dimensions.
Material Flexibility:
- It can be applied to a wide range of metallic and non-metallic materials, offering versatility in testing different materials’ mechanical properties.
Damage Prevention:
- The use of templates with higher rigidity and hardness than the test specimen prevents damage or distortion during the filling and polishing processes.
Limited Material Testing:
- Ideal for cases with limited material availability, making it valuable for research and applications where material constraints exist.
Micro-Scale Testing:
- Suited for testing materials at micro-scale dimensions, particularly relevant in applications like MEMs, where traditional testing may not accurately represent material behavior at small scales.
Questions about this Technology?
Contact for Licensing
sm-marketing@imail.iitm.ac.in
ipoffice2@iitm.ac.in
Research Lab
Prof. Haradanahalli S. N. Murthy
Department of Aerospace Engineering
Prof. Balkrishna C. Rao
Department of Engineering Design
Intellectual Property
- IITM IDF Ref. 1085
- IN 390351 – Patent Granted
Technology Readiness Level
TRL – 4
Experimentally validated in lab.