| 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 |
Improving Shear Strength of Adhesively Bonded Joints by Out-of-Plane Compression for Composite Pressure Vessels |
| Author(s) |
Sota Oshima |
| On-Site Speaker (Planned) |
Sota Oshima |
| Abstract Scope |
Excess carbon fiber bundles in dome sections which increase the material cost are inevitable by filament winding. Thus, jointed composite pressure vessels are promising for a reduction in carbon fiber bundles in composite pressure vessels. In order to achieve jointed composite pressure vessels, reliable and strong joint techniques are required. In this study, therefore, improving the shear strength of adhesively bonded carbon fiber reinforced polymer (CFRP) joints has been proposed. Out-of-plane compression was intentionally applied to joints to increase shear strength. The effects of out-of-plane loading on the strength of double lap joints were investigated. A loading apparatus to simultaneously apply shear and out-of-plane compressive loading was developed. Static and fatigue tests were carried out using the loading apparatus. Both static strength and cycles to failure under cyclic loading increased by applying out-of-plane stress regardless of the types of adhesives (epoxy and urethane) and adherends (CFRP and stainless steel). In addition, residual stress after 100000 cycles remained more than 80% of static stress. This result suggests that the applicability of adhesively bonded joints can be improved by using out-of-plane stress actively. |
| Proceedings Inclusion? |
Definite: Post-meeting proceedings |