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
Indian Council of Medical Research;Indian Institute of Technology
发明人:
Animangsu Ghatak,Susmita Das,Sukumar Laha
申请号：
US14888211
公开号：
US09869596B2
申请日:
2014.04.28
申请国别(地区):
US
年份:
2018
代理人:
摘要：
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.
