Circuit Check's strain gauge testing services delivers an industry leading analysis that clearly documents our results.
Download a datasheet on Circuit Check Strain Gauge services.
Strain Gauge Testing is a method of measuring strain at discrete points on a printed circuit board (PCB) while actuating the test fixture. Measurements are taken from sensors called “rosettes” which are mounted to the PCB. A scanner is connected to the rosettes that records the measurements up to 2000 cycles per second.
The fixture and circuit board used for the strain gauge test result in actual "live" measurements of the unit under test's (UUT's) flexing during the test cycle.
Test results may lead to the following mechanical modifications of the product test fixture. This helps to reduce strain on the product during actual test:
- Additional board supports
- Reinforcement of fixture structure
- Redistribution of probe locations
- Lower probe spring forces in limited areas
Strain gauge testing often is performed when:
- High concentrations of probes under BGA's or fragile components exist
- The UUT is larger than 200in_sq
- Fixture has > 2200 probes
- High or Extra high spring force probes are utilized
- If a component has a strict warranty policy
Circuit Check delivers a fully detailed strain gauge report for comparing test results to the industry standard IPC/JEDEC 9704.