 | | Mechanics of Solids
A Journal of Russian Academy of Sciences | | Founded
in January 1966
Issued 6 times a year
Print ISSN 0025-6544
Online ISSN 1934-7936 |
Archive of Issues
| Total articles in the database: | | 12854 |
| In Russian (Èçâ. ÐÀÍ. ÌÒÒ): | | 8044
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| In English (Mech. Solids): | | 4810 |
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| E. A. Devyatkin, I. V. Simonov, and A. A. Sirotin, "On electromagnetic radiation under destruction of ultrathin glass fibers," Mech. Solids. 44 (1), 131-140 (2009) |
| Year |
2009 |
Volume |
44 |
Number |
1 |
Pages |
131-140 |
| DOI |
10.3103/S0025654409010142 |
| Title |
On electromagnetic radiation under destruction of ultrathin glass fibers |
| Author(s) |
E. A. Devyatkin (Ishlinsky Institute for Problems in Mechanics, Russian Academy of Sciences, pr-t Vernadskogo 101, str. 1, Moscow, 119526, Russia, deviat@ipmnet.ru)
I. V. Simonov (Ishlinsky Institute for Problems in Mechanics, Russian Academy of Sciences, pr-t Vernadskogo 101, str. 1, Moscow, 119526, Russia, simonov@ipmnet.ru)
A. A. Sirotin (Ishlinsky Institute for Problems in Mechanics, Russian Academy of Sciences, pr-t Vernadskogo 101, str. 1, Moscow, 119526, Russia, sirotin@ipmnet.ru) |
| Abstract |
We study how the characteristics of electric signals emitted in the course of vibrations and fracture of ultrathin fibers under tension depend on the geometric parameters and physical properties of the fibers. A unique highly sensitive experimental plant was developed, and glass fibers of diameter 6.5, 10, 18, 150 µm, as well as polyethylene fibers of thickness 0.2-0.06 mm, were tested. It turned out that the signals emitted by fracture of fibers made of different dielectric materials (d<20 µm) are qualitatively the same in shape and have a negative phase of length 100-400 µs and a much longer positive phase. An electric signal induced by a fiber thinner than a human hair by an order of magnitude was recorded for the first time. Unexpectedly, the average values of amplitudes of signals for fibers significantly different in diameter turned out to be close to each other. This can be explained by the well-known fact that the number of fragments in fracture increases with the glass strength (a scale effect). The potentialities of the method for measuring electric signals in studying the spectra of fiber vibrations were discovered. |
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|
| Received |
23 March 2006 |
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