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What does FFS stand for?

FFS stands for Free-Form Surface (optics)

This definition appears frequently and is found in the following Acronym Finder categories:

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We have 170 other meanings of FFS in our Acronym Attic

Samples in periodicals archive:

Some specific topics reported include design of integral-shaped milling cutter profiles, a cooperative optimal method for two-level models of a micro device, design and numerical analysis of the internal suction flow heat sink, and a study on the rapid progressive die design of sheet metal with a free-form surface.
Comparison of measurement methods In summary, to get the entire picture of the free-form surface measurements described, some of the advantages and disadvantages of the measuring methods (photogrammetry and tacheometer-based laser scanning) can be highlighted.
Free-form surfaces, solids, and wire frame geometry, fully parametric and all in the same database, are included, as are design, drafting, parting-line generation, mold cooling simulation, and water line design.
Each cell is controlled by CHORUS F2, an industrial grade DMIS-based measuring software for operations such as in-process sheet metal gaging and free-form surface inspection.
A sampling of topics: dynamic energy absorption of circular honeycomb under in-plane impact loading, the effect of thermal properties of building glass on cooling energy consumption of buildings, integrated manufacturing of free-form surfaces, and a network model approach for investigation of regenerator on characteristic impedance in thermoacoustic engine, to name just a few.