GPa and MPa

MPa = MegaPascal = 10^6 N/mm²

GPa = GigaPascal = 10^9 N/mm²

So 1 GPa = 1000 MPa

thanks, was just wondering why the GPa number was going down, as the concentrations of nanos was going up, and MPa was alos going up

www.cleantechnano.com

Tony

Something is wrong here!

bbei's post is absolutely correct. What he did not mention is that the Pascal (and of course all multiples of it, such as kPa, MPa, GPa, etc) is a unit of pressure.

It is impossible for one measure of pressure to go up while another goes down, unless the pressures are measured in different places, like the input and output of a compressor.

I looked briefly at your link, but saw no reference to MPa or GPa.

nano is a prefix meaning one billionth [USA meaning of billion] or 10^-9, and has now been extended to mean extremely small. As a prefix, it only has meaning when it precedes something else. A nanometer is one billionth of a meter. A nanosphere is an extremely small sphere.

You say 'the concentrations of nanos was going up'. The concentration of nanowhats?

Perhaps your references to MPa and GPa have some other meanings than the standard international meaning.

They have to do with Tensile strength testing and comppression tesring of our carbon nanomaterial composites

T

You can find your answer on this site Tony.

www.cleantechnanoshareholders.com

Thats True!

thank u very much

I presume he was referring to this document: http://www.cleantechnano.com/pdf/Developing_New_Grade_of_CleanTech_CNSC_Nanocomposites_Edited%20Version.pdf

Thanks!

Very interesting article. I did not quite read the entire article word-for-word, but I did see the resistivity vs. pressure graphs, where the pressure was measured in MPa, and resistivity went down as pressure went up. I did not see any reference to GPa and certainly not any where 'GPa went up when MPa went down'.

Dick

Those results have not be published, yet. will try to send some later

Tony

http://www.cleantechnanoshareholders.com

Not published yet!

I have heard that for about 10 years.

Look at this site to learn more their testing methods.