Identify and prevent common adhesive failure modes.
Introduction to Adhesive Failure Analysis
Approximately 80% of adhesive failures originate from surface preparation deficiencies rather than adhesive formulation problems.
Cohesive vs Adhesive Failure
Cohesive failure occurs within the adhesive layer (good adhesion). Adhesive failure occurs at the interface (surface contamination usually cause).
Environmental Degradation
Moisture degradation is common. Water molecules accumulate at the interface, displacing adhesive from the substrate.
| Failure Mode | Root Cause |
|---|---|
| Cohesive | Adhesive strength limit |
| Adhesive | Surface contamination |
- Document failure mode characteristics
- Verify surface preparation procedures
Frequently Asked Questions
What does cohesive vs adhesive failure tell me?
Cohesive failure indicates good adhesion. Adhesive failure indicates adhesion problems.
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