Dynamic Characterization of Cercal Mechanosensory Hairs of Crickets

Previous dynamic characterizations of the cercal mechanosensory hairs of crickets have generally been limited to the first resonant frequency and associated deflection shape. A more complete description of the mechanical dynamics of these structures could be obtained by an experimental modal analysi...

Full description

Bibliographic Details
Main Authors:	Book, Joel M., Asokanthan, Samuel F.
Format:	Online
Language:	English
Published:	MDPI 2012
Online Access:	https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4553561/

id	pubmed-4553561
recordtype	oai_dc
spelling	pubmed-45535612015-10-08 Dynamic Characterization of Cercal Mechanosensory Hairs of Crickets Book, Joel M. Asokanthan, Samuel F. Article Previous dynamic characterizations of the cercal mechanosensory hairs of crickets have generally been limited to the first resonant frequency and associated deflection shape. A more complete description of the mechanical dynamics of these structures could be obtained by an experimental modal analysis. This paper describes a method by which a full experimental modal analysis, giving natural frequency, mode shape, and modal damping ratio, of these sense organs can be performed. Results of this analysis, employing an unmeasured moving-air excitation and non-contact vibration measurement with an output-only identification method are presented. Two distinct types of behaviour were observed, one of which was a good match for the behaviour expected based on the literature, and one of which was quite different. These two behaviours had distinct patterns of modal parameters. The method described in this paper has been shown to be able to estimate the modal parameters, including natural frequency, modal damping ratio, and normalized mode shape, for the first mode of cercal mechanosensory hairs of crickets. The method could practically be extended to higher modes and a wide variety of other sound and vibration sense organs with the selection of appropriate excitation and specimen supports. MDPI 2012-10-22 /pmc/articles/PMC4553561/ /pubmed/26466724 http://dx.doi.org/10.3390/insects3041028 Text en © 2012 by the authors; licensee MDPI, Basel, Switzerland. http://creativecommons.org/licenses/by/3.0/ This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution license (http://creativecommons.org/licenses/by/3.0/).
repository_type	Open Access Journal
institution_category	Foreign Institution
institution	US National Center for Biotechnology Information
building	NCBI PubMed
collection	Online Access
language	English
format	Online
author	Book, Joel M. Asokanthan, Samuel F.
spellingShingle	Book, Joel M. Asokanthan, Samuel F. Dynamic Characterization of Cercal Mechanosensory Hairs of Crickets
author_facet	Book, Joel M. Asokanthan, Samuel F.
author_sort	Book, Joel M.
title	Dynamic Characterization of Cercal Mechanosensory Hairs of Crickets
title_short	Dynamic Characterization of Cercal Mechanosensory Hairs of Crickets
title_full	Dynamic Characterization of Cercal Mechanosensory Hairs of Crickets
title_fullStr	Dynamic Characterization of Cercal Mechanosensory Hairs of Crickets
title_full_unstemmed	Dynamic Characterization of Cercal Mechanosensory Hairs of Crickets
title_sort	dynamic characterization of cercal mechanosensory hairs of crickets
description	Previous dynamic characterizations of the cercal mechanosensory hairs of crickets have generally been limited to the first resonant frequency and associated deflection shape. A more complete description of the mechanical dynamics of these structures could be obtained by an experimental modal analysis. This paper describes a method by which a full experimental modal analysis, giving natural frequency, mode shape, and modal damping ratio, of these sense organs can be performed. Results of this analysis, employing an unmeasured moving-air excitation and non-contact vibration measurement with an output-only identification method are presented. Two distinct types of behaviour were observed, one of which was a good match for the behaviour expected based on the literature, and one of which was quite different. These two behaviours had distinct patterns of modal parameters. The method described in this paper has been shown to be able to estimate the modal parameters, including natural frequency, modal damping ratio, and normalized mode shape, for the first mode of cercal mechanosensory hairs of crickets. The method could practically be extended to higher modes and a wide variety of other sound and vibration sense organs with the selection of appropriate excitation and specimen supports.
publisher	MDPI
publishDate	2012
url	https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4553561/
_version_	1613470510221361152

Dynamic Characterization of Cercal Mechanosensory Hairs of Crickets

Similar Items