In my LLDPE-ZnO composite at 15 wt% ZnO the Youngs modulus increased but storage modulus decreased. I can't understand why ?

I am using LLDPE as polymer and ZnO (40 micron diameter) powder as filler.Upon doing tensile testing I found that the Young's Modulus decreased till 3 wt% and then increased till 15% and then...

08 September 2017 2,779 3 View

Does single leaflet mechanical heart valve have any advantage over bileaflet mechanical heart valve?

For example TTK chitra valve still uses single leaflet valve, whereas SJM uses bi-leaflet.But could not find the advantages of mono-leaflet over bi-leaflet?

04 May 2016 917 3 View

Why should a drug be coated with a polymer for its delivery?What is so novel about it?

I mean why can't we just take it just like that?What are the advantages of coating it with a polymer?

08 September 2015 6,564 0 View

Why are my polymer films very sticky and very brittle after drying?

Polymer is Poly-2-ethyl-2-Oxazoline.I have added both PVA and PEG to it,still its sticky at room temperature humidity. If I dry it in a desiccator, it turns very brittle. How do I overcome this...

31 December 2014 3,572 11 View

In the case of pH sensitive hydrogels that are used for drug release,how can I make sure that the drug releases at a particular pH?

For example, pH of stomach is around 3, so how can I make sure that the drug doesn't get released at a pH 4? How can I make sure exactly that it gets released at a particular said pH, and not...

31 December 2014 9,955 3 View

How do I plot the graph of a function without the graph changing when I change the X and Y increments?

I am trying to plot the graph of a function, but as I change the increments in X and Y axis, the graph changes, so how to decide whether its increasing? This is the graph for the same function,but...

10 November 2014 6,328 2 View

Can anyone suggest a method for making polymer films?

I am trying to make Poly-2-ethyl 2 Oxazoline films, but films become very brittle after drying. I am making it by solution casting at room temperature.

10 November 2014 3,513 8 View

error in running a model in Abaqus

Excessive rotation of nodes in node set ErrNodeExcessRotation-Step1

17 August 2021 0 0 View

error in modelling model in Abaqus

Excessive rotation of nodes in node set ErrNodeExcessRotation-Step1

17 August 2021 0 0 View

MGL tools

20 June 2021 0 0 View

what is the simplest definition of ion exchange capacity

What this unit identifies for the ion exchange capacity ca. 0.92 meq. g-1. I am a newcomer in the membrane area. I just started. I highly appreciate your help

08 May 2021 0 0 View

what is the simplest definition of ion exchange capacity

What this unit identifies for the ion exchange capacity ca. 0.92 meq. g-1. I am a newcomer in the membrane area. I just started. I highly appreciate your help

08 May 2021 0 0 View

i have some problem with chtMultiRegionSimpleFoam

--> FOAM FATAL ERROR: Maximum number of iterations exceeded From function Foam::scalar Foam::species::thermo::T(Foam::scalar, Foam::scalar, Foam::scalar, Foam::scalar (Foam::species::thermo::*)(Foam::scalar, Foam::scalar) const, Foam::scalar (Foam::species::thermo::*)(Foam::scalar, Foam::scalar) const, Foam::scalar (Foam::species::thermo::*)(Foam::scalar) const) const [with Thermo = Foam::hConstThermo >; Type = Foam::sensibleEnthalpy; Foam::scalar = double; Foam::species::thermo = Foam::species::thermo >, Foam::sensibleEnthalpy>] in file /home/ubuntu/OpenFOAM/OpenFOAM-4.1/src/thermophysicalModels/specie/lnInclude/thermoI.H at line 66. FOAM aborting #0 Foam::error::printStack(Foam::Ostream&) at ??:? #1 Foam::error::abort() at ??:? #2 Foam::heRhoThermo >, Foam::sensibleEnthalpy> > > >::calculate() at ??:? #3 Foam::heRhoThermo >, Foam::sensibleEnthalpy> > > >::correct() at ??:? #4 ? at ??:? #5 __libc_start_main in "/lib/x86_64-linux-gnu/libc.so.6" #6 ? at ??:?

24 March 2021 0 0 View

Can we classify HV and LV lines based on line length?

I have dataset which shows the length of power lines. I need to classify the lines based on the line length. Is there a rule to classify the High voltage (HV) and low voltage (LV) lines based on...

03 March 2021 4,116 4 View

Polymer composites suddenly solidifies?

I am making polymer composite by solvent mixing method. When I am trying to add filler solution in polymer solution it quickly get solidified. How to make them then uinform? It doesn't give time...

03 March 2021 7,540 4 View

What is the production process of CaFe ferroalloys?

I looking for ferro calcium production process

03 March 2021 1,755 4 View

Resistor definition in Piezoelectric bimorph with ANSYS workbench

Hello, good day! I am trying to simulate similar bimorph piezoelectric harvester with below commands. However, the output power doesn't change with resistor value. Please help to find the reason. ET,10,CIRCU94,0 !SET UP RESISTOR R,1,100000 !RESISTANCE VALUE TYPE,10 !SET ELEMENT TYPE E,1,2 !CREATE RESISTOR BETWEEN NODES 1 AND 2 Thanks in advance Regards,

02 March 2021 0 0 View