What substance can I use for DIY recoating of a optical fiber?

During the process of inscription of FBG on the silica/glass optical fiber few centimeters of the fiber had to be stripped. Bare fiber is too fragile for mechanical measurements, so I thought...

10 August 2020 4,823 4 View

Are move probabilities used during MCTS procedure in AlphaGo Zero?

In AlphaGo Zero algorithm, the neural network returns a pair (p, v) consiting of a vector of move probabilities p and a scalar v indicating winning probability. The v is used for node evaluation...

06 June 2020 5,588 3 View

Can discretization method change non-observable system to became an observable one?

Is it theoretically possible, that after discretization by using Talyor Series Expansion, a non-observable nonlinear system will became an observable? It was proved, that used continuous model of...

15 May 2020 3,608 5 View

Did anyone here perform VPSC simulation by imposing stress?

I am trying to simulate the state of internal pressure in a tube using the boundary conditions: \sigma_{rr} = 0, \sigma{theta theta} = X, \sigma_{zz} = \sigma{theta theta}/2 in VPSC. I know how to...

21 November 2019 6,226 1 View

Is there any physicochemical data which tell which of two polymers will be on the surface after the 3D printing?

Hi, I prepared solvent of PHBV and PLGA in methylene chloride. The resulting slurry was then cast into a Petri dish and dried. The resulting film was used to fabricate composite scaffolds using...

06 November 2019 9,454 2 View

What is the best animal model for testing the effectiveness of painkillers?

We have a substance that potentially reduces the sensation of pain. We want to study it on laboratory animals. We are looking for a way to measure pain in animals.

04 February 2019 6,146 4 View

Does anyone know a free microstructure generation algorithm?

Hello everyone, I would like to use some program to generate grain structure of a metal. Does anyone know any free code or program? The output data from this program wil be used for FEM...

01 June 2016 7,580 3 View

How reliable is texture measurement from the EBSD.comparing to texture obtained using the X-ray diffraction?

How reasonable is obtaining a polycrystal texture from the EBSD measurement comparing to the results obtained using the X-ray diffraction? Is the typical investigation area in EBSD smaller or bigger?

14 September 2015 1,615 9 View

What is the optimal buffer for DNase I?

I would like to use DNase I (from bovine pancreas, Roche) to get rid of DNA. Roche/Sigma does some recommendations (1 mg/ml enzyme, pH 7.0, Ca 0.12 mM, some Mg), but I did not find a comprehensive...

06 September 2015 9,806 4 View

Heat transfer coefficient depend on kind of fluid that take part in the heat exchange, but is it depend on kind of material that take part in process?

24 September 2014 9,175 23 View

Why are the velocities so high in my Boussinesq approximation Fluent simulation?

Hello, I have a mechanism where air rises due to convective flows. In this simulation, nothing is driving the air except this. I understand that the Boussinesq approximation only works for small...

02 March 2021 4,910 3 View

What is the characteristic length to determine the Reynolds number for the scattered turbulent fluid flow?

Dear all, I just saw this example in FB on the difference between laminar flow and turbulent flow. The flow from a pipe hits the sink and scattered. The flow from the pipe is characterized as...

02 March 2021 1,999 5 View

Joint behaviour in Abaqus is not captured well?

I am working on roof joint and trying to simulate the behaviour in Abaqus. I am successful in running the model but the final graph does not follow the experimental curve in the negative direction...

01 March 2021 6,661 3 View

Is there a deep reason for using the squared modulus of the wave function as the probability density of the existence of the particle?

I think we were all surprised at the first time we got to know quantum mechanics that the squared modulus of the wave function is the probability density of the existence of the particle? The role...

28 February 2021 6,282 9 View

How to modify Johnson cook equation in ABAQUS?

I wanted to add an extra parameter to the existing Johnson cook equation in the ABAQUS simulation. How to add those extra parameters. Ref: A modified Johnson-Cook material model with strain...

28 February 2021 4,841 3 View

How can we simulate an hyperelastic-viscoelastic behavor with Ansys APDL?

I am working on modeling and simulation of biomecanical material behaviour, I have succeded on simulating skin using anisotropic hyperelastic material, on APDL and in our lab's finite element...

28 February 2021 552 3 View

How to find the right number of integration points in second order 3d finite elements?

I am familiar with finite element simulations and numerical schemes like the Gauss Legendre quadrature. I also know that the Gauss integration yields exact values for polynomials up to degree 2n-1...

27 February 2021 6,818 3 View

How the wettability of rock sample can be changed by ageing in pure hydrocarbon oils only?

I want to do wettability analysis of hydrocarbon oil (octane)/rock/surfactant solution system. but to do the analysis first I have to make rock surface oil-wet. Since hydrocarbon oil does not have...

27 February 2021 5,383 3 View

What could be the reason for not having further low chi square value (better agreement) in my refinement result?

I have tried every combination of parameter changes and after that i have a poor chi square value. I can't get it lower any further. I know there have been a lot of discussion about Rietveld...

26 February 2021 8,480 3 View

What is the best way to calculate the angles of twist for concrete columns subjected to torsional moment using finite element software?

In Finite element software like ANSYS , there is difficulty in obtaining direct results of twisting of concrete members because SOLID65 which is the unique element designed to represent concrete...

26 February 2021 3,806 2 View