By Rob Schubert
Warranty returns are a great place to start for setting targets for new products. But how do you translate that to specific numbers to design to? If you know the strength of a product and the return rate, you can develop stress profiles. If you have multiple similar products, your estimates can be even better. From the profiles, targets can be developed for future products to meet, and use them to calculate the expected return rates. You can even use these profiles to estimate the impact of design changes to warranty returns.