http://www.sixsigmaspc.com/

Six Sigma SPC OEM Products
Six Sigma and SPC (Statistical Process Control) Software Applications

Six Sigma SPC - 2070 W. Washington St. #5 Springfield IL 62702  Ph: 217.698.0063
6 Sigma Statistical Process Control (SPC) Software for Windows 95/98/NT/2000/XP/ME

Home Search Capability Studies Links
Products Services
Prices FAQ
About Support
Contact Quality Control Dictionary and Glossary Free Desktop 6 Sigma Calculator Forum
Quality Books Six Sigma and SPC Articles Free Online 6 Sigma Calculator Free Newsletter

Design Life

The expect life of a product by design or it’s endurance, durability, or how long it will perform while meeting the minimum specifications or customer requirements. Can also be the length of time till t he product becomes obsolete.

Could also refer to the life or endurance of a process. Example, machine ware out, space shortages, etc. The unit of measurement for design life could be expressed in units of time such as years, hours, miles, cycles, etc. Should be based on a baseline measurement.

A good example are light bulbs. Light bulbs could be designed to last forever. But doing so would mean fewer light bulbs produced, and would thus raise the cost of a light bulb to perhaps well over 50% of the current cost. So if you were to break a light bulb or install new lighting, it could cost $100 or more for each bulb unit.

Products could be tested using an accelerated life test, (ALT) with MTBF, (Mean Time Between Failure), MTTF, (Mean Time To Failure), and a Bathtub curve.

Back to the Quality Control Dictionary and Glossary

Click Here!

Google
  Web www.sixsigmaspc.com

Copyright ? 2005 Six Sigma SPC / Jim Winings All Rights Reserved
Privacy Statement - Disclaimer - Copyright - Site Map

Last Updated: Saturday, 10-Jun-06 15:50:57 PDT

1