Journal article
Cloaking by coating: How effectively does a thin, stiff coating hide a soft substrate?
- Abstract:
- From human tissue to fruits, many soft materials are coated by a thin layer of a stiffer material. While the primary role of such a coating is often to protect the softer material, the thin, stiff coating also has an important effect on the mechanical behaviour of the composite material, making it appear significantly stiffer than the underlying material. We study this cloaking effect of a coating for the particular case of indentation tests, which measure the ‘firmness’ of the composite solid: we use a combination of theory and experiment to characterize the firmness quantitatively. We find that the indenter size plays a key role in determining the effectiveness of cloaking: small indenters feel a mixture of the material properties of the coating and of the substrate, while large indenters sense largely the unadulterated substrate.
- Publication status:
- Published
- Peer review status:
- Peer reviewed
Actions
Access Document
- Files:
-
-
(Preview, Accepted manuscript, 2.6MB, Terms of use)
-
- Publisher copy:
- 10.1039/C9SM02511A
Authors
- Publisher:
- Royal Society of Chemistry
- Journal:
- Soft Matter More from this journal
- Volume:
- 16
- Issue:
- 19
- Pages:
- 4574-4583
- Publication date:
- 2020-03-30
- Acceptance date:
- 2020-03-27
- DOI:
- EISSN:
-
1744-6848
- ISSN:
-
1744-683X
- Language:
-
English
- Keywords:
- Pubs id:
-
1096971
- Local pid:
-
pubs:1096971
- Deposit date:
-
2020-03-27
Terms of use
- Copyright holder:
- Box, F et al.
- Copyright date:
- 2020
- Rights statement:
- © 2020 The Authors.
- Notes:
- This is the accepted manuscript version of the article. The final version is available online from the Royal Society of Chemistry at: https://doi.org/10.1039/C9SM02511A
If you are the owner of this record, you can report an update to it here: Report update to this record