Industrial Consultancy & Sponsored Research (IC&SR) , IIT Madras
A method of computing strains from full-field data
Categories for this Invention
Technology: Computing strains from full-field data;
Industry & Application: LCD/ LED Screen;
Market: The global LED display market is projected to grow at a CAGR of 7.3% during 2024-2032.
Image Gallery
Problem Statement
- Generally, the primary output from several full field deformation measurement techniques is digital image. Further correlation is the displacement vector at a dense grid of points covering the area of interest, wherein one is interested in strains which is computed from spatial derivatives of displacement.
- However, computed displacement data inherently contain noise & difficult to obtain strains.
- Hence, there is a need to address the issues.
Technology
- Present invention describes a method to compute strains from full-field data using Principal Component Analysis (PCA) of displacement field by choosing only the dominant singular values & their corresponding eigenvectors. (Refer Figures)
- The PCA is performed by one of two equivalent methods.
- Demonstrates the accuracy of the present method by applying it to two cases each of homogeneous & inhomogeneous strain fields & show that in all cases.
- The method comprises a few steps illustrates in the smart chart herein.
Key Features / Value Proposition
Technical Perspective:
- The claimed method reduces the dimensionality of the displacement data drastically & eliminates a significant portion of the noise.
- Further, the shapes of the dominant eigenvectors offer physical insight into dominant deformation patterns.
- The present method yields excellent results even when applying it to two cases each of homogeneous & inhomogeneous strain fields.
- Facilitates the strain computation more accurate, faster & less memory-intensive.
Industry Perspective:
- Applicable in the full-field displacement data & facilitates important commercial implications.
Questions about this Technology?
Contact For Licensing
sm-marketing@imail.iitm.ac.in
ipoffice2@iitm.ac.in
Research Lab
Prof. SANKARA J SUBRAMANIAN
Department of Engineering Design
Intellectual Property
IITM IDF Ref. 884
IN Patent No: 516322
Technology Readiness Level
TRL-3/4
Proof of Concept ready, tested in lab.