Abstract
Heating from 20°C to temperatures as low as 25°C was found to cause a partly reversible effect on the structure of an adhesive (epoxy) joint involving steel adjoining (bonded) components with a surface roughness of 120 μm, as shown by monitoring the contact electrical resistivity of the joint during heating and cooling. The reversible portion was due to thermal expansion of the adhesive. The irreversible portion was due to an irreversible microstructural change in the adhesive. These structural changes decreased the extent of electrical contact between the adjoining surfaces at asperities, thereby increasing the contact resistivity.
| Original language | English |
|---|---|
| Pages (from-to) | 549-557 |
| Number of pages | 9 |
| Journal | Journal of Adhesion |
| Volume | 79 |
| Issue number | 6 |
| DOIs | |
| State | Published - 2003 |
Keywords
- Adhesive
- Electrical resistance
- Epoxy
- Heating
- Joint
- Steel
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