SCB-Specimen
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SCB-specimen
General information
The Anglo-Saxon abbreviation SCB stands for ‘Split-Cantilever Beam’.
The SCB-specimen is used to determine the interlaminar crack toughness under mode III loading (see: crack opening modes).
Test specimen shape
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| Fig. 1: | Split-Cantilever Beam test specimen |
A comprehensive overview of suitable test specimens for fracture mechanics investigations on plastics and composite materials can be found in fracture mechanics test specimens.
Testing adhesive bonds
(Author: Prof. Dr.-Ing. S. Marzi)
When testing adhesive bonds, it is advisable to make the joined parts more solid due to their high fracture toughness [2]. Due to their similarity to DCB-specimens (Mode I), these test specimens are called UODCB (out-of-plane loaded Double Cantilever Beam) or, in their tapered form, TODCB (tapered out-of-plane loaded Double Cantilever Beam). Figure 2 shows these two basic forms of test specimens. The same methods used for DCB and TDCB tests in mode I are available for evaluating the tests.
| Fig. 2: | UODCB-specimen (left) and TODCB-specimen (right) |
See also
- Adhesive joints – Determination of characteristic values
- Specimen for fracture mechanics tests
- Mixed-mode crack propagation
- Fracture modes
- Levels of knowledge in fracture mechanics
References
| [1] | Donaldson, S. L.: Mode III Interlaminar Fracture Characterization of Composite Materials. Comp. Sci. and Techn. 32 (1988) 3; https://doi.org/10.1016/0266-3538(88)90022-X |
| [2] | Schrader, P., Schmandt, C., Marzi, S.: Mode I creep fracture of rubber-like adhesive joints at constant crack driving force. International Journal of Adhesion and Adhesives 113 (2022) 103079, DOI: 10.1016/j.ijadhadh.2021.103079 |