Polarisation-based stress screening of tempered drinking glass
The residual-stress distribution in tempered drinking glass needs evaluation. Without the optical path and thickness of the curved glass, a visible polarisation pattern cannot be treated directly as a mechanical-stress value.
Proposed output: optical-pattern map and regions requiring validation. This visualisation is not a calibrated stress measurement, temper classification or glass-strength certificate.
- 01 Presentation
- 02 Trigger and reference
- 03 Image / profile
- 04 Decision
- 05 Evidence and PLC
Position the glass at the reference pose
- Sample record
- —
- Optical-pattern status
- —
- Acquisition progress
- —
Scenes are illustrative simulations; they are not customer references or performance guarantees.
Solution approach
Acquire transmitted images under controlled polarisation and associate the reference with product position. Map regional optical-retardation or pattern differences. Converting these into stress requires separate validation of geometry, thickness, material coefficient and a suitable measurement method.
Process steps
- 01
Presentation
Position the glass at the reference pose
- 02
Trigger and reference
Acquire polarisation images
- 03
Image / profile
Map optical-pattern differences
- 04
Decision
Check geometry/calibration validity
- 05
Evidence and PLC
Record the screening map
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