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  Compressive strength and elastic modulus at Agilkia on comet 67P/Churyumov-Gerasimenko derived from the SESAME/CASSE touchdown signals

Möhlmann, D., Seidensticker, K. J., Fischer, H.-H., Faber, C., Flandes, A., Knapmeyer, M., et al. (2018). Compressive strength and elastic modulus at Agilkia on comet 67P/Churyumov-Gerasimenko derived from the SESAME/CASSE touchdown signals. Icarus, 303, 251-264. doi:10.1016/j.icarus.2017.09.038.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-002E-9B83-E Version Permalink: http://hdl.handle.net/21.11116/0000-0001-2941-8
Genre: Journal Article

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 Creators:
Möhlmann, Diedrich, Author
Seidensticker, Klaus J., Author
Fischer, Hans-Herbert, Author
Faber, Claudia, Author
Flandes, Alberto, Author
Knapmeyer, Martin, Author
Krüger, Harald1, Author              
Roll, Reinhardt1, Author              
Scholten, Frank, Author
Thiel, Klaus, Author
Arnold, Walter, Author
Affiliations:
1Department Planets and Comets, Max Planck Institute for Solar System Research, Max Planck Society, ou_1832288              

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 MPIS_GROUPS: Planets and Comets
 MPIS_PROJECTS: ROSETTA: Philae
 Abstract: We report an analysis of the Comet Acoustic Surface Sounding Experiment (CASSE) acceleration signals at Philae's first touchdown site Agilkia on comet 67P/Churyumov-Gerasimenko. The signals yield the forces in the contact zone foot-sole and comet surface, and from these forces a compression strength of approximately 10 kPa can be derived. The sole's contact-resonances provide an elastic modulus of the order of 10 MPa. Our results are partially based on calibration experiments, which are described in the appendix of the current paper. Relations known in material science, linking porosity to elasticity and fracture energy, allow one to check the interdependence between compression strength and elasticity.

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Language(s): eng - English
 Dates: 2018-01-0220172018
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Method: Peer
 Identifiers: DOI: 10.1016/j.icarus.2017.09.038
 Degree: -

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Title: Icarus
Source Genre: Journal
 Creator(s):
Affiliations:
Publ. Info: Amsterdam : Academic Press
Pages: - Volume / Issue: 303 Sequence Number: - Start / End Page: 251 - 264 Identifier: ISSN: 0019-1035
CoNE: https://pure.mpg.de/cone/journals/resource/954922645023