Strain gauge pin based force measurement

• Autorzy: Skorupka Z. , Sobieszek A.

Identyfikatory

DOI

10.5604/01.3001.0012.2852

• Języki publikacji: EN

Abstrakty

EN

In this article authors present force measurement method based on strain gauge measuring system installed inside pin, which is a part of light helicopter Main Landing Gear Shock Absorber. Strain gauges in full bridge configuration were installed inside the mounting pin (upper one – fuselage side). Placement and type of strain gauges were selected during the preliminary tests, which verified the validity and conditions of the force measurement. Preliminary tests allowed verification and selection of an optimal measurement system by testing two types of them. The impact on force according to the angle of force vector direction was also verified. Preliminary tests of the strain gauges equipped pin were performed using quasistatic tests stand – 40 T hydraulic press for applying force acting on shock absorber and pin. Whole measuring system is planned to be used in real time analysis of shock absorber force acting on fuselage mounting node. The strain gauges allows measurement of force in any place of the structure, the article presents the advantages of the system located inside pin. Additionally, the installation technologies of strain gauges in hard-to-reach places are presented. The article is summed up with an analysis of the problems, which arise during the installation and measurement process using strain gauges installed in such a specific place.

Słowa kluczowe

EN

strain gauges; landing gear; test stand; measuring system

• Wydawca: Łukasiewicz Research Network - Institute of Aviation ; European Science Society of Powertrain and Transport KONES Poland ; Wydawnictwo Instytutu Technicznego Wojsk Lotniczych
• Czasopismo: Journal of KONES
• Rocznik: 2018
• Tom: Vol. 25, No. 2
• Strony: 335--340
• Opis fizyczny: Bibliogr. 7 poz., rys.

Twórcy

autor

Skorupka Z.

• Institute of Aviation Department of Transport and Energy Conversion Division Krakowska Av. 110/114, 02-256 Warsaw, Poland tel.:[phone], ext. 657, ext. 224, fax: [phone]

autor

Sobieszek A.

• Institute of Aviation Department of Transport and Energy Conversion Division Krakowska Av. 110/114, 02-256 Warsaw, Poland tel.:[phone], ext. 657, ext. 224, fax: [phone]

Bibliografia

• [1] Conard, L. M., Strain gauge installation tool, United States Patent, Patent Number: 5,767,416, 1998.
• [2] Hoffmann, K., Applying the Wheatstone Bridge Circuit, HBM materials.
• [3] Keil, S., Technology and Practical Use of Strain Gages: With Particular Consideration of Stress Analysis Using Strain Gages, Installation of strain gages pp. 109-134, Berlin 2017.
• [4] Kowalewski, Z., Szymczak, T., Podstawy tensometrii elektrooporowej oraz praktyczne jej zastosowania, Dziewiąte Seminarium Nieniszczące Badania Materiałów, Zakopane 2015.
• [5] Paprzycki, I., Skorupka, Z., Laboratoryjne badania podwozi lotniczych, Transport przemysłowy i maszyny robocze, 2014.
• [6] Skorupka, Z., Laboratory Investigations on Landing Gear Ground Reactions (Load) Measurement, Journal of KONES, Vol. 24, No. 2, Warsaw 2017.
• [7] Sobieszek, A., Paprzycki, I., Tywoniuk, A., Landing gear dynamic tests with strain gages,Journal of KONES Vol. 22, No. 3, pp. 221-227, 2001.

Uwagi

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2018).