Mass Properties Interpreting Pro-E Results

[Reowald]

Hi,

I studied as product designer but have become more of a mechanical engineer working in oil and gas. My mathematical knowledge is severely lacking so please bear this in mind if you are kind enough to help.

I have drawn an air duct heater and want to work out the weight of the duct itself, it is made from 316L and weighs 7970kg/m³ according to Sandvik having entered this information into Pro-E, this is what the mass properties report has kicked out:

VOLUME = 5.3890440e+06 MM^3
SURFACE AREA = 3.6075821e+06 MM^2
DENSITY = 7.9700000e-09 TONNE / MM^3
MASS = 4.2950681e-02 TONNE


What I what is the overall weight in kg and i don't know what 'e+06' or 'e-09' mean and how to translate into something I recognise.

 

[asimpson]

e+06 is X 10 to power of 6 or by 1000000 . It is scientific notation.

http://en.wikipedia.org/wiki/Scientific_notation

Cant remember my ProE but I am sure there is a setting to have mass in Kg instead of Tonne. Probably to simply convert in your head. 1 Tonne is 1000 Kg or 4.29X10^-2 is 42.9 Kg

I think.

 

[Mechv5]

Basically, the conversion could be made like this:
- for volume: 5.3890440e+06 mm^3 means 5389044 mm^3
- for surface area: 3.6075821e+06 mm^2 means 3607582.1 mm^2
- etc.
so for e+06 you multiply the value with 1000000, for e-09 you have to divide the value by 1000000000, etc.
The straight answer to your question is: the "measured" weight in kg would be 42.950681kg.
Hope I could help.

 

[Reowald]

Thanks for your replies, now it is explained, like all these things, it seems like I should of of known.

This is my first Eng-Tips question and am really happy with the responses thanks asimpson and Mechv5.