Non-contact method for measurement of strain profile at a location interposed within a soft deformable object with dynamic evolution of the strain under dynamic loading or fracture of the object

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United States of America Patent

PATENT NO 9869596
SERIAL NO

14888211

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Abstract

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A non-invasive method for estimation of strain profile and dynamic evolution of the strain at a location interposed inside a block of soft material, includes forming a tracer grid consisting of microscopic lines or regularly spaced microscopic dots on a single plane buried inside the soft block; preparation of a deformable object embedded with the tracer grid in three primary steps: i. preparing a block of crosslinked material by crosslinking a first predetermined quantity of a pre-polymer solution containing a monomer, a crosslinking agent, and an initiator and promoter all mixed in a solvent at a known stoichiometric weight ratio; ii. transferring a grid comprising of lines or dots onto the face by direct writing or transferring from an easy release surface; and iii. crosslinking a second predetermined quantity of the same pre-polymer solution on the gel surface, such that this second crosslinked material gets welded to the first one.

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Patent Owner(s)

  • INDIAN COUNCIL OF MEDICAL RESEARCH;INDIAN INSTITUTE OF TECHNOLOGY MADRAS

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Das, Susmita Kanpur, IN 1 3
Ghatak, Animangsu Kanpur, IN 3 4
Laha, Sukumar Kanpur, IN 1 3

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