Japanese
Problem
Spiral wear observed at roller ends in spring-supported kiln systems.
Observation
- Wear localized at edge
- Spiral pattern (not fracture)
- Debris accumulation
Key Question
Is this shear failure?
Engineering Analysis
- Load → transferred through end
- Contact → localized
- Roller → behaves as beam
Bending dominates
Shear negligible
Mechanism
- Spring preload
- Local contact
- Micro movement
- Wear accumulation
Conclusion
Spiral wear is:
Contact wear under bending-dominated loading
Not shear failure.