The background graphic on this page studies some spiral patterns
which optimize space coverage for reinforcement . Multiple layers
with patterns overlap to link individual spirals together. Cement or
binder fills spaces between which in effect chains lapping spirals
together. With appropriate tooling, this approach to composite
reinforcement could compete with other reinforcement approaches
in many ways. In situ and pre-manufacture of spiral modules are
both feasible methods under consideration.
The spacing between continuous reinforcement filament can evenly
distribute by progressive spiral layouts. Layers of spiral layouts can
overlap and a filling material like resin, thermo materials or cement.
can bind them in situ, instead of hard bonding mesh grids which kink
on compound curves. The reinforcement filament or wire is potentially
bonded only during formation of product. This could reduce energy
required for initial manufacture and also enhance composite function.
Ordinary mesh or pre bonded grids can limit compound curve forming
of composites. Alternatively, a soft bonded spiral grid is suggested
further below. Compared with established mesh uses this is "thinking outside the box".
3D Computer model is rendered with spiral mesh map
to suggest ferro-cement or fiber cement application in
house construction. Below are more examples of spiral
mesh configurations and links to other spiral reinforcement concepts.
The construction of composite skins has been mentioned.
Now some ideas for cellular comparmentalizing of walls will follow.
Cellular formations offer lighter structure, insulating qualities and
some potential for trussing. The next below illustrates a spiral
form of truss where the compressive strength of cement ties the
two thin walls together with some measurable truss like effect.
(Click here for a page on similar wll building)
Next picture below shows one possibility for tieing spiral units together.
Next picture below shows a three axial alignment of spirals.
Multiple layers nested togetherlike egg crates offers a 3D grid effect.
Spirals can intertwine this way, tri axially. If a machine were to
intertwine spiral wires or filaments, small beads of adhesive
could hold the configuration for use in a molding process.
This brings up the point that some applications could benefit
from bracing any of the spiral units with cheaper strand materials,
where a prefabricated spiral was preferred over an on- site
or in place winding of spirals.
Too little is known about actual test comparisons between traditional reinforcement, flat spiral loops and individual "O" rings. Rings appear to have interesting test possibilities. As a low budget single handed developer, I have very little opportunity to test the many ideas presented in these www pages. The testing cannot keep up with my my conceptual exploration.
Research & Development
Through Free Exchange of Ideas
Comments are invited. Consultancy or constructive cooperation is offered.
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These research reports are in the public domain and are furnished "as is". The author makes no warranty, express or implied, for any purpose. The author assumes no responsibility for the use or misuse of this research. Bo Atkinson, enersearch Tel : 207 342 5796 . . . (MaineUSA) E m a i l- boa1@pivot.net ___ Spam filters are in use, if your personal email doesn't get through, try calling: 1-207-342-5796. Spam or unsolicited sales which are not directly related to discussion of this work are not welcome.