Product Reliability Test of a Bluetooth Speaker
EAG has established product reliability test processes. In this example we inspect a Bluetooth speaker using Accelerated Testing.
Reliability Test Approach
Test plan definition (define CtQ & pass-fail criteria) => experimental phase => data analysis
Product Reliability Test Example
Reliability of a Bluetooth speaker
Test Plan Definition — Accelerated Testing
Exploratory experiments from field data showed that this speaker is sensitive
to mechanical forces (dropping) and to the combination of humidity and high
temperature when switched on
Test Plan
Non-operational drop tests at 3 heights and operational damp-heat storage tests at 3 heights
Experimental Phase & Data Analysis
Drop test 30 – 60 – 100 cm
Damp-heat test 40°C/90%RH – 50°C/50%RH – 60°C/90%RH
Results
Material & Component Reliability Testing
Same approach as for product testing. Often no clear pass/fail criteria available because of progressive degradation
- Failure mode(s) and degradation data needed (chemical, optical, physical. mechanical) for correct data analysis
- Our own Material Analysis Lab is well equipped to support failure mode and degradation studies
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