Page 358 - Design for Six Sigma a Roadmap for Product Development

328 Chapter Nine

Example 9.27. Tensometric Grid
Old design

Transparent
Transparent model model (1)

P
1 2

Tensometric grid Filaments (2)

A stress measurement grid in a transparent model is made using filaments
of material. (Disadvantage: The filament size and strength distort the stress
measurement.)
New design
Transparent
Transparent model model (1)

P 1 2

Tensometric grid Grid made
of void (2)

It is proposed to manufacture the grid from cylindrical microvoids. The
microvoids (which are small in diameter) do not distort the model stress field,
yet remain visible to accurately define the deflection of the model. The grid of
voids is formed by etching away fine copper filaments embedded in the model.
Example 9.28. Removing Allergens
Old design

Milk (1) Allergen
1
Milk
2
Heating (2)
Heating