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Mahdieh Babaiasl Was Chosen to Represent MME Department at WSU’s 3 Minute Research Competition

Mahdieh Babaiasl Was Chosen to Represent MME Department at WSU’s 3 Minute Research Competition

Mahdieh Babaiasl have been chosen to represent Mechanical and Materials Engineering Department at WSU’s 2019 3 minute research competition.

Abstract of the proposal for the competition is as follows:

Water-jet technology has recently been used in medical applications such as surgery for dissection of organs, dentistry, bone cutting, and wound debridement.

Measuring, and controlling depth of cut of water-jet is important for medical applications.

For example, in surgical applications using water-jet, selective cutting is a must, and water-jet should cut the desired layer and should not go further, and this requirement dictates a predictive model for it.

We have experimentally studied the effect of tissue stiffness, needle diameter, and waterjet speed on cut-depth.

Experimental results showed that cut-depth has a direct relationship with flow rate, and an inverse relationship with elastic modulus of the tissue and needle diameter.

A finite element model is developed to predict the cut-depth. In order to have a mathematical relation for control purposes, a predictive mechanics-based model is also developed for depth of cut as a function of tissue properties (toughness, and constitutive response) and waterjet needle properties (diameter, and velocity of water-jet).

The results showed that finite element model, and mathematical model give a reasonable prediction of depth of cut of water-jet in soft tissue.

The developed mathematical model can work for all soft tissues given their toughnesses, and shear moduli.

This work is really significant for applications such as waterjet- assisted surgery to selectively cut tissue layers in order to avoid injury, water-jet steerable needles in which a flexible needle is guided in curved paths cut by water-jet through human anatomy, and any waterjet-assisted medical application where controlling the cut-depth is important.

A single static PowerPoint slide was allowed to use as the presentation:


Here is a short video of the presentation:

You can see the other posts on the waterjet steerable needles in the link below:

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By Madi

Ph.D. in ME | Robotics Instructor and Researcher | Founder of Mecharithm

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