Temat: strain gage - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Landing gear dynamic tests with strain gages
Autorzy:: Sobieszek, A.
Paprzycki, I.
Tywoniuk, A.
Powiązania:: https://bibliotekanauki.pl/articles/245070.pdf
Data publikacji:: 2015
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: landing gear test
dynamic test
load measurement
strain gage instrumentation
strain gage installation
Opis:: Strain gage sensing is widely used method for measurements conducted during dynamic tests. This article describes electrical resistance strain gages performing force measurement during the tests of main and nose landing gear of medium-lift civil aircraft. It is the most common method used for measuring mechanical properties like force, pressure, stress, strain, etc. Strain gages were installed in selected areas of the Drop Test Stand. The paper presents advantages of strain gage measuring method in regards to commercially available, ready-made force sensors. Furthermore, it describes the process of selecting strain gage and load cell measurement systems (bridge, half bridge, quarter bridge) and its influence on the test results. What is more the technological process is presented, taking into account the strain gage installation adhesive technology and sensor protection against external conditions, performance of the measurement system and connection to the data acquisition system. Continuing with the process description of calibrating a load cell system for measuring the occurring forces. The article is summed up with an analysis of the problems which arise during the installation and measurement process using strain gages, and includes a description of advantages and disadvantages that occur while applying strain gages while preforming force measurement.
Źródło:: Journal of KONES; 2015, 22, 3; 221-227
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Static load test on instrumented pile – field data and numerical simulations
Autorzy:: Krasiński, A.
Wiszniewski, M.
Powiązania:: https://bibliotekanauki.pl/articles/178436.pdf
Data publikacji:: 2017
Wydawca:: Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:: foundation piles
static load test
pile instrumentation
strain gage
numerical analysis
Opis:: Static load tests on foundation piles are generally carried out in order to determine load – the displacement characteristic of the pile head. For standard (basic) engineering practices this type of test usually provides enough information. However, the knowledge of force distribution along the pile core and its division into the friction along the shaft and the resistance under the base can be very useful. Such information can be obtained by strain gage pile instrumentation [1]. Significant investigations have been completed on this technology, proving its utility and correctness [8], [10], [12]. The results of static tests on instrumented piles are not easy to interpret. There are many factors and processes affecting the final outcome. In order to understand better the whole testing process and soil-structure behavior some investigations and numerical analyses were done. In the paper, real data from a field load test on instrumented piles is discussed and compared with numerical simulation of such a test in similar conditions. Differences and difficulties in the results interpretation with their possible reasons are discussed. Moreover, the authors used their own analytical solution for more reliable determination of force distribution along the pile. The work was presented at the XVII French-Polish Colloquium of Soil and Rock Mechanics, Łódź, 28–30 November 2016.
Źródło:: Studia Geotechnica et Mechanica; 2017, 39, 3; 17-25
0137-6365
2083-831X
Pojawia się w:: Studia Geotechnica et Mechanica
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: An Uncertainty Model Of Approximating The Analytical Solution To The Real Case In The Field Of Stress Prediction
Autorzy:: Gutiérrez, R.
Ramírez, M.
Olmeda, E.
Díaz, V.
Powiązania:: https://bibliotekanauki.pl/articles/220703.pdf
Data publikacji:: 2015
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: uncertainty
strain gage measurement
stress concentration factor
weighted least squares algorithm
Opis:: Deterministic mechanics has been extensively used by engineers as they needed models that could predict the behavior of designed structures and components. However, modern engineering is now shifting to a new approach where the uncertainty analysis of the model inputs enables to obtain more accurate results. This paper presents an application of this new approach in the field of the stress analysis. In this case, a two-dimensional stress elasticity model is compared with the experimental stress results of five different size tubes measured with resistive strain gages. Theoretical and experimental uncertainties have been calculated by means of the Monte Carlo method and a weighted least square algorithm, respectively. The paper proposes that the analytical engineering models have to integrate an uncertainty component considering the uncertainties of the input data and phenomena observed during the test, that are difficult to adapt in the analytical model. The prediction will be thus improved, the theoretical result being much closer to the real case.
Źródło:: Metrology and Measurement Systems; 2015, 22, 3; 429-442
0860-8229
Pojawia się w:: Metrology and Measurement Systems
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Operating conditions effect over the coupling strength for urban aerial ropeways
Warunki eksploatacji mające wpływ na wytrzymałość miejskich kolei linowych
Autorzy:: Martinod, R. M
Estepa, D
Paris, C. E
Pineda, F. A.
Restrepo, J. L.
Castaneda, L. F
Mejia, G. A.
Powiązania:: https://bibliotekanauki.pl/articles/374326.pdf
Data publikacji:: 2014
Wydawca:: Politechnika Śląska. Wydawnictwo Politechniki Śląskiej
Tematy:: ropeways
cable car
funicular
safety transport
strain gage
koleje linowe
kolejka linowa
kolej linowo-terenowa
bezpieczeństwo transportu
Opis:: The present work is aimed to assess the operating conditions effect for urban aerial ropeways with a commercial usage, based on measurements obtained from an arrangement of sensors that record the coupling assembly behavior between the detachable gondola pod and the track rope. The work pays particular attention to the effect caused by external conditions due to the wind loads joined up with other parasite external effects, through the measurement of the engage strains. The cableway gondola continuous cycle has mono-cable of simple ring type.
Niniejszy artykuł ma na celu ocenę efektywnych warunków pracy dla miejskich napowietrznych kolei linowych z praktyką przemysłową na podstawie pomiarów uzyskanych z układem czujników, które rejestrują zachowanie gondoli w trakcie procesu wyprzęgania jej z liny. W artykule zwrócono szczególną uwagę na wpływ warunków zewnętrznych spowodowanych przez obciążenia wiatrem z dołączeniem innych obciążeń zewnętrznych przez pomiar naprężeń w trakcie wprzęgania. Kolej gondolowa jednolinowa ma pojedynczą linę prostego typu pierścieniowego.
Źródło:: Transport Problems; 2014, 9, 3; 5-14
1896-0596
2300-861X
Pojawia się w:: Transport Problems
Dostawca treści:: Biblioteka Nauki

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