STFT MASS (v3 14/08/07 JST)
YSH50/RS3 density = 60% Fibre Volume Fraction = 0.4x1193 (RS3 datasheet) 0.6x2100 (Nippon Graphite
Fib(er) website) = 1737 kg/m^3 (also found 1738 kg/m^k from LBL as used on Pixels)
Foam density = Airex R82.60 = 60kg/m^3
Ultem (30%glass fill) density = 1510kg/m^3 (Bayer plastics website)
Aluminium = 2700kg/m^3
Araldite 2011 density = 1200kg/m^2 (www.hep.man.... Also contacted Huntsman Araldite but waiting for reply)
Stainless Steel density = 7960kg/m^2
For assembly TD-1012-954
TD-1012-955 x 1
VOLUME = 1.8260250e+05 MM^3
SURFACE AREA = 3.6774656e+05 MM^2
DENSITY = 1.7370000e-06 KILOGRAM / MM^3
MASS = 3.1718054e-01 KILOGRAM
= 317g
TD-1012-956 x 1
VOLUME = 2.7643164e+06 MM^3
SURFACE AREA = 3.5481656e+05 MM^2
DENSITY = 6.0000000e-08 KILOGRAM / MM^3
MASS = 1.6585898e-01 KILOGRAM
=166g
TD-1012-953 x 8
VOLUME = 4.4679338e+02 MM^3
SURFACE AREA = 8.0935281e+02 MM^2
DENSITY = 1.5100000e-06 KILOGRAM / MM^3
MASS = 6.7465800e-04 KILOGRAM
=2.6g (all 8)
TD-1012-909 x 25
VOLUME = 2.1622753e+02 MM^3
SURFACE AREA = 4.3928051e+02 MM^2
DENSITY = 2.7000000e-06 KILOGRAM / MM^3
MASS = 5.8381432e-04 KILOGRAM
= 16g (all 28)
Total uncut mass = 501.6g
TD-1012-954
VOLUME = 1.8143915e+06 MM^3
SURFACE AREA = 6.2130385e+05 MM^2
AVERAGE DENSITY = 2.0763195e-07 KILOGRAM / MM^3
MASS = 3.7672564e-01 KILOGRAM
Total cut mass = 377g
Assume 125g lost in cuts from …955 & …956
Cut in CFRP (…955) as measured in AutoCad is 34128mm^2 at 1mm thick and density of 1.737e-6 kg/mm^3
this missing piece has a mass of 59g. There are also a number of hole for the aluminium alloy RIVNUTs:
29@dia 6mm = 28.27x29 = 819mm^2
7@dia 8.5mm = 56.74x7 = 397mm^2
Total 1216mm^2 at 1mm thick = 2g (for a piece ~35x35mm)
Total missing mass for …955 = 61g
The other missing mass is therefore in the foam, this is 64g and is made up of the same (but slightly larger)
middle cut plus all the services channels.
So the adjusted figures are:
TD-1012-955 = 258g
TD-1012-956 = 102g
For assembly TD-1012-977
All piece parts as above apart from 25 RIVNUTs not 28 = 15g = 500.6g
TD-1012-977
VOLUME = 1.7905886e+06 MM^3
SURFACE AREA = 6.2014883e+05 MM^2
AVERAGE DENSITY = 2.0863985e-07 KILOGRAM / MM^3
MASS = 3.7358812e-01 KILOGRAM
Total cut mass = 374g
Assume 127g lost in cuts from …955 & …956
The CFRP backplate is the same as for the other type so the foam cuts are different in this case therefore the
foam cut mass is 66g (127-61)
TD-1012-955 = 258g
TD-1012-956 = 100g (166-66)
For the Araldite…
For the Araldite 2011 I estimate 0.15 mm thick cover, this would have a surface area the same as the foam, i.e.
covering all exposed foam on the front and bonding the back to the CFRP. From earlier mass enquiry:
TD-1012-956 x 1
SURFACE AREA = 3.5481656e+05 MM^2
Araldite 2011 is 1200kg/m^3 so for 0.15mm thick the density per m^3 is 1200 * (0.00015/1) = 0.18kg or
180g/m^2 (notably epoxy film adhesive for support structures was 100g/m^2!). 3.5482e5 / 1e6 = 0.355m^2
therefore 0.355*180 = 64g
Bolts
M4 x 12 Cap Hd Stain.s (equiv. equi-sp average R of R725)
VOLUME = 2.8443746e+02 MM^3
SURFACE AREA = 3.2596337e+02 MM^2
DENSITY = 7.9600000e-06 GRAM / MM^3
MASS = 2.2641222e-03 GRAM
20 related to …954 = 45.2g
18 related to …977 = 40.7g
M4x20 Cap Hd Stain.s (equi-sp R605)
VOLUME = 3.8496837e+02 MM^3
SURFACE AREA = 4.2649433e+02 MM^2
DENSITY = 7.9600000e-06 GRAM / MM^3
MASS = 3.0643482e-03 GRAM
8 related to …954 = 24.5g
7 related to …977 = 21.4g
M4 washer Stain.s (equiv. equi-sp average R of R725)
VOLUME = 1.0723041e+01 MM^3
SURFACE AREA = 8.3079418e+01 MM^2
DENSITY = 7.9600000e-06 KILOGRAM / MM^3
MASS = 8.5355407e-05 KILOGRAM
20 related to …954 = 1.7g
18 related to …977 = 1.5g