| About this Abstract |
| Meeting |
2024 ASC Technical Conference, US-Japan Joint Symposium, D30 Meeting
|
| Symposium
|
2024 ASC Technical Conference, US-Japan Joint Symposium, D30 Meeting
|
| Presentation Title |
A Review of Surface Analysis Technologies for Increasing Robustness of Composite Bonding in the Fleet |
| Author(s) |
Jared Jack Gunsky, Justin Massey , Alyssa Zamora, Gregor Peikert, Jarno Jokinen |
| On-Site Speaker (Planned) |
Jared Jack Gunsky |
| Abstract Scope |
The US Navy (USN) frequently performs structural bonded repairs on metallic and composite aircraft components. Proper surface preparation is imperative for safety of flight. Currently, a quantitative quality assurance inspection method has not been established for use by USN aircraft maintainers to ensure proper surface preparation prior to structural adhesive bonding during repair operations of aircraft and components.
In this study, Naval Air Systems Command (NAVAIR) Engineers and Composite Repair Engineering Development Program (CREDP) foreign military partners, Finland and Switzerland, performed a collaborative research review on the latest portable water contact angle (WCA) measurement technologies for accuracy and feasibility of use in the fleet.
Each device was evaluated by comparing water contact angle measurements, collected on contaminated and non-contaminated (baseline) bonding surfaces, against mechanical test data. Mechanical testing included double lap shear (DLS) (ASTM D3528) and double cantilever beam (DCB) (ASTM D5528). Coupons for each test were manufactured using common composite repair laminates and film/paste adhesives used by each participating partner. A variety of contaminates commonly found in maintenance and overhaul facilities were applied to the bonding surfaces of each coupon prior to measuring WCA. Coupons were then subsequently bonded and tested at select conditions. Additional evaluations were completed to compare ease of use, reliability, and measurement accuracy of each device throughout the testing period. All mechanical testing and water contact angle data was combined between NAVAIR and CREDP. These findings will be used to down select the ideal device to use in maintenance operations by the aircraft program. |
| Proceedings Inclusion? |
Definite: Post-meeting proceedings |