Abstract
In this study, a new method of bonding CFRP and Al6061-T6 with epoxy adhesive after shot-peening treatment on the surface of Al6061-T6 specimens was proposed to improve bonding strength of a single lap joint between CFRP and Al6061-T6. More specifically, correlation between shot peening coverage on the Al6061-T6 surface and bonding strength with CFRP was experimentally analyzed. Experimental results showed that the surface roughness and the bonding strength increased as the peening time on the surface of Al6061-T6 increased up to a specific peening time (or coverage). However, the surface roughness and bonding strength decreased again under an over-peening condition of 480 seconds (300% coverage) or more. Therefore, it is necessary to search for the optimal peening time that can maximize bonding strength as well as the fatigue life of parts at a peening time between 320 (200%) and 480 s (300%) through additional experiments in future studies.
| Translated title of the contribution | A Study on the Shear Characteristics based on the Coverage of Shot-peened Al6061-T6 Bonded with CFRP |
|---|---|
| Original language | Korean |
| Pages (from-to) | 31-36 |
| Number of pages | 6 |
| Journal | Journal of the Korean Society for Precision Engineering |
| Volume | 41 |
| Issue number | 1 |
| DOIs | |
| State | Published - Jan 2024 |
Keywords
- Bonding strength
- CFRP
- Shot peening coverage
- Surface roughness