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Measuring the relative density of open cell metal foams

Submitted by rezaalavi1000 on
research
relative density
metal foams
open cell

Hello,

I would like to know how to measure the density of open cell porous iron foam. I am studying the mechanical behavior of pure iron foams for which I need to compare the relative densities of different foam samples. Could the density of the foams be simply calculated by the mass over the bulk volume (volume of the struts + volume of the pores) of the foam? Can I use Archimedes principle to calculate the foam density given that I have open cells? What is the best method to calculate the foam density? 

Best Regards,

Reza

PhD position within Marine Hydrodynamics available at NTNU Trondheim

Submitted by josef.kiendl@u… on
research
Isogeometric analysis (IGA); boundary element method; potential flow; fluid-structure interaction; FSI; flexible propellers

Please check the official announcement at:

https://www.jobbnorge.no/en/available-jobs/job/138439/phd-position-within-marine-hydrodynamics-iv-136-17

Characterization of Human Diaphragm at high strain rate loading.

Submitted by gaurp on
research

In this paper, we studied the strain rate dependent failure properties of human diaphragm tissue using uniaxial tensile testing at four strain rates, i.e. 0.0015/s, 65/s, 130/s and 190/s. The custom made quasi-satatic and drop tower based dynamic test setups was used to conduct the tests uptill 200/s strain rate.

Modeling the Hydrophobicity of Nanoparticles and Their Interaction with Lipids and Proteins

Submitted by Ali Ramazani on
research

We present a method of modeling nanoparticle (NP) hydrophobicity using coarse-grained molecular dynamics (CG MD) simulations, and apply this to the interaction of lipids with nanoparticles. To model at a coarse-grained level the wettability or hydrophobicity of a given material, we choose the MARTINI coarse-grained force field, and determine through simulation the contact angles of MARTINI water droplets residing on flat regular surfaces composed of various MARTINI bead types (C1, C2, etc.).

What kind of tensile testing grips is right for your samples and application?

Submitted by Deniz Yalcin on
research
tensile testing
tensile grips
universal testing machine
UTM

Choosing the most appropriate tensile grips to effectively secure your samples is critical in getting accurate measurements of tensile properties such as tensile strength, peak load, elongation, tensile modulus, and yield.

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