All aspects of materials engineering

Does anyone know if there are any etchants out there that will dissolve
silica (SiO2) but not elemental germanium (Ge)?  Thanks for the help.

–
Carl L. Dohrman
202 E. Peabody Drive #240
Champaign, IL 61820
www.students.uiuc.edu/~dohrman

I am in the process of designing an accessory for a microwave that
will help individuals that have problems accessing the food that they would
like to warm up in the Microwave.  Lisa is the individual that I am working
with at the moment.  She has Cerebral Palsy and can only use one hand to
push the food into the microwave.  I am working on a design that allows her
to slide the food on the pyrex plate and the plate would retract into the
microwave with a small push.  I need to know how much it would cost to
manufacture a plate according to my design.  I have several designs
according to the price that it would cost.  I would like to know if you mold
these plates, and what process you use if you don’t injection mold them.  I
will send you the sketches for several designs.

A group of three students including me are working on this project
for their Senior Design Project.  I would also like to know if you have any
ceramic materials that I could use for rollers ( I will send you sketches
for that as well ).  The idea for the extendable tray originated from the
extendable rack (top) of a dishwasher.  The rack is able to extend from the
dishwasher, and it is supported and able to extend partially due to 8
rollers, four on each side.  The rollers are situated one on top of another
(attached to the walls of the dishwasher) and the rack is attached to a C
type rod by smaller rollers.  The C-type rod goes between the (one on top of
another) rollers and extends 1/2 of the total length out of the dishwasher.
The smaller rollers then allow the rack to extend 1/2 the distance of the
rack.  We are trying to apply this technique to a microwave, but have run
into some problems.  A major concern is the bonding of th e supports ( we
need an adhesive that is microwave safe).

Hello,

 I’m dealing with the investigation of polymeric materials
 (rubber, plastic, polymer) mechanical properties
 (rigidity, modulus, loss factor adn so on) by contact
 dynamic method of indentation. The maethod includes the impact
 loading of the material tested, detecting the indenter’s velocity
during impact, computational procedure in order to calculate
 the mechanical properties of material according to the sugested
mechanical model.

 I have compared these results with ones obtained by static method
(Shore, IRHD) and ultrasound apparatus.

 I’m interesting to make the relationship with researchers who do or
did the investigation in this field.

 Sincerely Sergei Tsarik
 sergei.v.tsa…@iaph.bas-net.by

Sent via Deja.com http://www.deja.com/
Before you buy.

Dear all,

I am looking for an IR crystal that can be used in ATR mode, which is not
soluble in organic solvents like dimethylacetamide and N-methylpyrrolidone and
which does not absorb wavelengths in the low wavenumber range ( > 475 cm-1).

Any good suggestions?
Thanks

PS Please reply to wk…@aol.com

Hello,

 I’m dealing with the investigation of polymeric materials
 (rubber, plastic, polymer) mechanical properties
 (rigidity, modulus, loss factor adn so on) by contact
 dynamic method of indentation. The maethod includes the impact
 loading of the material tested, detecting the indenter’s velocity
during impact, computational procedure in order to calculate
 the mechanical properties of material according to the sugested
mechanical model.

 I have compared these results with ones obtained by static method
(Shore, IRHD) and ultrasound apparatus.

 I’m interesting to make the relationship with researchers who do or
did the investigation in this field.

 Sincerely Sergei Tsarik
 sergei.v.tsa…@iaph.bas-net.by

Sent via Deja.com http://www.deja.com/
Before you buy.

Do any of you polymer gurus out there have any data on the low
temperature properties of the following polymers.  (minus 40*
C/F and lower)  Elongation and tinsel most important.

*Polysulfone  (Trade name–UDEL
*Polyphenylsulfone  (Trade name–Radel* R
*Polyetherimide  (Trade name–ULTEM* 1000

Thanks very much,
Dave Brownell,
DB Technologies

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Hi all,

I am trying to measure temperatures around 1600C…. what thermocouple
would you recommend?

thanks

Does anyone know of any companies which will be willing to supply a
few square yards of aramid cloth? I’m interested in doing some tear
resistance tests with them and I don’t think I need an entire bale of
it.

granit
—
http://granit.8m.com