Page 352 - Design for Six Sigma a Roadmap for Product Development

322 Chapter Nine

As we discussed earlier, all three elements are needed to deliver a
function, including a harmful function. Therefore, to eliminate a harm-
ful function, we can try the following:
1. Block or disable the harmful action (field)
2. Destroy or disable the field of a harmful function
3. Draw harmful action (field) to another object
4. Add another field/fields to counterreact the harmful action (field)

We will discuss several frequently used methods as follows.

Method 1: Block or disable the harmful
action (field)
We can block the harmful action (field) to the object by
■ Inserting a substance to shield the object from harmful action, that is:

Subject F Object

■ Inserting a substance between subject and object to alter the prop-
erty of the harmful field, that is:

F
Subject Object

Example 9.20. Glass Ampoule Seal In this problem, overheating of the
medicine inside the ampoule is the harmful action. We will try to introduce
an insulator to shield the ampoule bottom from the heat.

Burner
Flame (1)
Ampoule 1

Water
2
Water Ampoule (2)
Holder