- #1
Superflibbit
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Hello everyone,
I'm currently undertaking a work placement at the medical physics department of Leicester Royal Infirmary, investigating the potential application of a novel ultrasound technique in assessing carotid plaque.
As part of my research, I'm evaluating the accuracy of the technique by determining the Young's Modulus of several cylinders of tissue mimicking material (PVA-cryogel, between 4 and 6 freeze/thaw cycles) by experiment before evaluating the YM using the ultrasound scanner, so I can compare the results.
At the moment I'm using the classic method of loading masses and measuring the extension of the cylinders etc, however I'm convinced that this is an ineffective method for this material. The typical stiffness is between around 50 - 180 kPa and the material is fairly slipply and fragile, so it's difficult to attach masses and the cylinders often break and I'm not sure that I'm getting very accurate results.
I've suggested that instead we load the masses on top of the cylinders and measure the compression, but again, that's not ideal.
I was wondering if anyone knew any better ways of determining the YM?
(We don't have any tensometers etc)
Thanks,
Sam
I'm currently undertaking a work placement at the medical physics department of Leicester Royal Infirmary, investigating the potential application of a novel ultrasound technique in assessing carotid plaque.
As part of my research, I'm evaluating the accuracy of the technique by determining the Young's Modulus of several cylinders of tissue mimicking material (PVA-cryogel, between 4 and 6 freeze/thaw cycles) by experiment before evaluating the YM using the ultrasound scanner, so I can compare the results.
At the moment I'm using the classic method of loading masses and measuring the extension of the cylinders etc, however I'm convinced that this is an ineffective method for this material. The typical stiffness is between around 50 - 180 kPa and the material is fairly slipply and fragile, so it's difficult to attach masses and the cylinders often break and I'm not sure that I'm getting very accurate results.
I've suggested that instead we load the masses on top of the cylinders and measure the compression, but again, that's not ideal.
I was wondering if anyone knew any better ways of determining the YM?
(We don't have any tensometers etc)
Thanks,
Sam