Page 353 - Design for Six Sigma a Roadmap for Product Development

Theory of Inventive Problem Solving (TRIZ) 323

Specifically, we propose surrounding the ampoules with a water jacket.
The water takes excess heat away from the ampoules to prevent overheat-
ing the drug.

Example 9.21. Bending Studded Pipe
Old design
Stud Gauge
Stud (1) Gauge (2)
1 2
Pipe

Studded pipe is bent over a mandrel to form it as needed. (Disadvantage:
The mandrel damages the studs.)
New design
Stud Gauge
Stud (1) Gauge (2)
1 2
Pipe

Polyurethane

Polyurethane

It is proposed to introduce an elastic (polyurethane) layer between the man-
drel and the pipe. The elastic compresses without transmitting force from
the mandrel to the studs. At the same time, it transmits enough compres-
sion force to bend the pipe wall between the studs. As a result, bending does
not damage the studs.

Method 2: Add another field/fields to
counterreact the harmful action (field)
Another field F 1 is added to counteract the harmful action, that is,

F
Subject Object
F 1