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Keywords = electromagnetic expanding ring test

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7 pages, 2519 KiB  
Proceeding Paper
High Strain Rate Ductility of the Selected Metals for Shaped Charge Liners
by Jacek Janiszewski, Judyta Sienkiewicz, Wojciech Burian, Aleksander Kowalski, Artur Żak and Paweł Prochenka
Phys. Sci. Forum 2022, 4(1), 12; https://doi.org/10.3390/psf2022004012 - 2 Aug 2022
Viewed by 1540
Abstract
An experimental study on various types of metals with the use of an electromagnetic expanding ring technique is presented in this paper. Three metals with differing physical–mechanical properties, i.e., OFE (oxygen-free electronic) copper, aluminum alloy AW 2017A, and Armco iron were considered. This [...] Read more.
An experimental study on various types of metals with the use of an electromagnetic expanding ring technique is presented in this paper. Three metals with differing physical–mechanical properties, i.e., OFE (oxygen-free electronic) copper, aluminum alloy AW 2017A, and Armco iron were considered. This study aimed to select a material with a desirable property for the performance of a shaped charged jet. The obtained results show that the OFE copper with the relatively smallest grain size reveals the highest ductility under electromagnetic expanding ring loading conditions. Armco iron rings also showed relatively good ductility under dynamic loading. These observations seem to suggest the possibility of applying the abovementioned metals in the manufacturing of shaped charge liners. Full article
(This article belongs to the Proceedings of The 19th International Conference on Experimental Mechanics)
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15 pages, 3856 KiB  
Article
Theoretical and Experimental Study on Wide Range Optical Fiber Turbine Flow Sensor
by Yuhuan Du and Yingqing Guo
Sensors 2016, 16(7), 1095; https://doi.org/10.3390/s16071095 - 15 Jul 2016
Cited by 7 | Viewed by 5642
Abstract
In this paper, a novel fiber turbine flow sensor was proposed and demonstrated for liquid measurement with optical fiber, using light intensity modulation to measure the turbine rotational speed for converting to flow rate. The double-circle-coaxial (DCC) fiber probe was introduced in frequency [...] Read more.
In this paper, a novel fiber turbine flow sensor was proposed and demonstrated for liquid measurement with optical fiber, using light intensity modulation to measure the turbine rotational speed for converting to flow rate. The double-circle-coaxial (DCC) fiber probe was introduced in frequency measurement for the first time. Through the divided ratio of two rings light intensity, the interference in light signals acquisition can be eliminated. To predict the characteristics between the output frequency and flow in the nonlinear range, the turbine flow sensor model was built. Via analyzing the characteristics of turbine flow sensor, piecewise linear equations were achieved in expanding the flow measurement range. Furthermore, the experimental verification was tested. The results showed that the flow range ratio of DN20 turbine flow sensor was improved 2.9 times after using piecewise linear in the nonlinear range. Therefore, combining the DCC fiber sensor and piecewise linear method, it can be developed into a strong anti-electromagnetic interference(anti-EMI) and wide range fiber turbine flowmeter. Full article
(This article belongs to the Section Physical Sensors)
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