Abstract
The double cantilever beam (DCB) tests are widely used to assess the interfacial delamination properties of laminated composites. For quasi-static loads, the DCB tests are standardized based on the beam mechanics; for dynamic loads, however, such as high-loading-rate impact and cyclic loads, there is no established analytical theory. This presents a significant obstacle preventing the research community from assessing the delamination behavior of composites or adhesives for their application under complex in-service loads. In this paper, the theory of evaluating dynamic mode-I delamination driving force for DCBs under general displacement loads is developed for the first time, accounting for structural vibration effects. The developed theory is demonstrated by two examples: high-loading-rate split Hopkinson bar impact and cyclic fatigue loads. The analytical solutions are validated by published experiment results and in-house tests. This work provides a fundamental analytical tool to study and assess the fracture behavior of fiber reinforced-polymer composite and adhesive materials under various loading conditions.
| Original language | English |
|---|---|
| Article number | 109632 |
| Journal | Composites Science and Technology |
| Volume | 228 |
| Early online date | 9 Jul 2022 |
| DOIs | |
| Publication status | Published - 29 Sep 2022 |
Bibliographical note
Funding Information:This work was supported by the National Natural Science Foundation of China (Grant No. 51401028 , No. 51271193 , No. 11790292 ), the Strategic Priority Research Program of the Chinese Academy of Sciences (Grant No. XDB22040303 ), and the Innovation Program ( 237099000000170004 ).
Publisher Copyright:
© 2022 Elsevier Ltd
Keywords
- Cyclic loads
- Double cantilever beam test
- Dynamic energy release rate
- General displacement loads
- High loading rate and impact
ASJC Scopus subject areas
- Ceramics and Composites
- Engineering(all)