Page 97 - Design for Environment A Guide to Sustainable Product Development

76 Chapter Five

Performance Practice
Indicator Guideline Analysis Tool

Design for Mean time be- Allow ade- Thermal simu-
Reliability tween failures quate spacing lation program
(MTBF) for compo- for specified
nents with board layout
high power
consumption
Design for Average annual Utilize low- Life-cycle
Environment energy con- power com- energy use
sumption ponents and assessment
enable sleep based on
mode typical user
patterns

TABLE 5.1 Application of DFR and DFE to a Printed Circuit Board

and ends with the release of the final design. In a true concurrent
engineering approach, requirements address not only product per-
formance but also manufacturing, service, and other downstream
issues including environmental performance. Like any other objec-
tives, environmental goals and requirements should be established
using measurable and verifiable indicators.
In general, a requirement can be defined as a description of a set of
testable conditions applicable to products or processes. A requirement

FIGURE 5.1 Incorporating DFE into the integrated product development
process.