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Tytuł:
Embryonic Architecture with Built-in Self-test and GA Evolved Configuration Data
Autorzy:
Malhotra, Gayatri
Duraiswamy, Punithavathi
Kishore, J.K.
Powiązania:
https://bibliotekanauki.pl/articles/27311869.pdf
Data publikacji:
2023
Wydawca:
Polska Akademia Nauk. Czasopisma i Monografie PAN
Tematy:
embryonic
BIST
Self-test
Genetic Algorithm
Cartesian Genetic Programming
Opis:
The embryonic architecture, which draws inspiration from the biological process of ontogeny, has built-in mechanisms for self-repair. The entire genome is stored in the embryonic cells, allowing the data to be replicated in healthy cells in the event of a single cell failure in the embryonic fabric. A specially designed genetic algorithm (GA) is used to evolve the configuration information for embryonic cells. Any failed embryonic cell must be indicated via the proposed Built-in Selftest (BIST) the module of the embryonic fabric. This paper recommends an effective centralized BIST design for a novel embryonic fabric. Every embryonic cell is scanned by the proposed BIST in case the self-test mode is activated. The centralized BIST design uses less hardware than if it were integrated into each embryonic cell. To reduce the size of the data, the genome or configuration data of each embryonic cell is decoded using Cartesian Genetic Programming (CGP). The GA is tested for the 1-bit adder and 2-bit comparator circuits that are implemented in the embryonic cell. Fault detection is possible at every function of the cell due to the BIST module’s design. The CGP format can also offer gate-level fault detection. Customized GA and BIST are combined with the novel embryonic architecture. In the embryonic cell, self-repair is accomplished via data scrubbing for transient errors.
Źródło:
International Journal of Electronics and Telecommunications; 2023, 69, 2; 211--217
2300-1933
Pojawia się w:
International Journal of Electronics and Telecommunications
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
New Structure of Test Pattern Generator Stimulating Crosstalks in Bus-type Connections
Autorzy:
Garbolino, T.
Powiązania:
https://bibliotekanauki.pl/articles/226543.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
integrated circuit interconnections
crosstalk
test pattern generator
built-in self-test
system-on-a-chip
Opis:
The paper discloses the idea of a new structure for a Test Pattern Generator (TPG) for detection of crosstalk faults that may happen to bus-type interconnections between built in blocks within a System-on-Chip structure. The new idea is an improvement of the TPG design proposed by the author in one of the previous studies. The TPG circuit is meant to generate test sequences that guarantee detection of all crosstalk faults with the capacitive nature that may occur between individual lines within an interconnecting bus. The study comprises a synthesizable and parameterized model developed for the presented TPG in the VLSI Hardware Description Language (VHDL) with further investigation of properties and features of the offered module. The significant advantages of the proposed TPG structure include less area occupied on a chip and higher operation frequency as compared to other solutions. In addition, the design demonstrates good scalability in terms of both the hardware overhead and the length of the generated test sequence.
Źródło:
International Journal of Electronics and Telecommunications; 2015, 61, 1; 67-75
2300-1933
Pojawia się w:
International Journal of Electronics and Telecommunications
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Numerical simulation of the ducted propeller and application to a semi-submerged vehicle
Autorzy:
Zou, Jin
Tan, Guoge
Sun, Hanbing
Xu, Jie
Hou, Yongkang
Powiązania:
https://bibliotekanauki.pl/articles/259041.pdf
Data publikacji:
2020
Wydawca:
Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:
open water test
self-propulsion test
ducted propeller
unmanned semi-submerged vehicle
Opis:
The self-propulsion test of underwater vehicles is the key technique for predicting and evaluating the navigation performance of these submersibles. In this study, the numerical simulation of a standard propeller JD7704+Ka4-70 is first presented and the results are compared with experiments to validate the numerical approaches. The reason why the propulsion efficiency of the ducted propeller is higher than that of the conventional propeller is explored. Then, the paper proposes a series of numerical simulations conducted to test the performance of the ducted propeller designed according to the JD7704+Ka4-70 in order to match with the unmanned semi-submerged vehicle (USSV), and the propeller’s open water characteristic curves are obtained. The results show a reasonable agreement with the regression analysis. Afterwards, the numerical simulations focus on a self-propulsion test of the USSV with the designed ducted propeller and the self-propulsion point is obtained. The streamlines through the hull as well as the ducted propellers are clearly obtained, together with the velocity distributions of the propeller plane. The results vividly demonstrate the hydrodynamic performance of the USSV with the designed propellers. In this paper, all the CFD simulations are based on the numerical software, Star-CCM+, and use the Reynolds-averaged Navier‒Stokes (RANS) equations with the shear stress transport (SST) k-omega turbulence model.
Źródło:
Polish Maritime Research; 2020, 2; 19-29
1233-2585
Pojawia się w:
Polish Maritime Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Demonstrator testera wbudowanego BIST dla układów w pełni różnicowych
Demonstrator of BIST for testing and diagnosis of fully differential circuits
Autorzy:
Toczek, W.
Kaczmarczyk-Mróz, K.
Powiązania:
https://bibliotekanauki.pl/articles/151553.pdf
Data publikacji:
2014
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
ocena zgodności wyrobów
testery wbudowane BIST
diagnostyka uszkodzeń
conformity assessment
built-in self-test
fault diagnosis
Opis:
Przedstawiono demonstrator testera wbudowanego, przeznaczony do pracy na stanowisku dydaktycznym w laboratorium z przedmiotu Zaawansowane Metody Pomiarowe i Diagnostyczne. Na stanowisku studenci zapoznają się z technologią BIST (ang. Built-In Self-Test), która jest przykładem wdrożenia strategii projektowania dla testowania.
A demonstrator of Built-In Self-Tester (BIST) for testing and diagnosis of fully differential circuits is presented. The demonstrator works on the educational stand in the Laboratory of Advanced Measurement and Diagnostic Methods, where students are familiarized with BIST technology, which is an example of implementation of Design-for-Test strategy. In the BIST, a testing method is applied, which employs the excitation of the circuit under test by a common-mode signal. Fault location is performed with use of a fault dictionary. Laboratory tasks include: fault detection, analysis and validation of diagnostic method, fault dictionary construction, fault location and calculation of test quality metrics. Students evaluate test quality metrics using a probabilistic approach to the analysis of measurement process in accordance with guidance provided by the Joint Committee for Guides in Metrology (JCGM) in “Evaluation of measurement data – The role of measurement uncertainty in conformity assessment” JCGM 106: 2012.
Źródło:
Pomiary Automatyka Kontrola; 2014, R. 60, nr 2, 2; 98-100
0032-4140
Pojawia się w:
Pomiary Automatyka Kontrola
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
On enhancing diagnostic effectiveness of autonomous test structures for digital circuits of medical devices
Autorzy:
Chodacki, M.
Powiązania:
https://bibliotekanauki.pl/articles/332923.pdf
Data publikacji:
2010
Wydawca:
Uniwersytet Śląski. Wydział Informatyki i Nauki o Materiałach. Instytut Informatyki. Zakład Systemów Komputerowych
Tematy:
symulacja układów cyfrowych
pseudolosowe testowanie
wbudowany autotest
simulation of digital circuits
pseudorandom testing
built-in self-test
Opis:
The problem of reliability of medical electronic systems (EMD) controlled by a digital subsystem is discussed. The environmental security of EMD results from conformance to standards applying to design, manufacture, testing and implementation (in the USA, Department of Heath & Human Services, Food and Drug Administration and Quality System Regulation QSR [6]). These standards describe the whole life cycle of a device and apply both to hardware and software. However, it is impossible to eliminate completely all failures, faults and defects; some of them could have catastrophic effects to the environment. This is why digital circuit tests are of utmost importance to ensure reliability of digital systems, thus also proper diagnostics and care of the patient's health and life. The researches on design of more effective digital circuit self-testing and minimizing them are of particular significance in such important applications as medical procedures that use EMD.
Źródło:
Journal of Medical Informatics & Technologies; 2010, 16; 51-57
1642-6037
Pojawia się w:
Journal of Medical Informatics & Technologies
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Automated software-based in-field self-test program synthesis
Autorzy:
Jasnetski, A.
Ubar, R.
Tsertov, A
Powiązania:
https://bibliotekanauki.pl/articles/397877.pdf
Data publikacji:
2017
Wydawca:
Politechnika Łódzka. Wydział Mikroelektroniki i Informatyki
Tematy:
microprocessor
software based self-test
SBST
automatic test program generation
high-level decision diagrams
HLDD synthesis
mikroprocesor
programy ATPG
HLDD
synteza HLDD
Opis:
This paper presents a methodology to automate functional Software-Based Self-Test program development. We rely on the previously published research on modeling processors using subclass of acyclic directed graphs called High-Level Decision Diagrams (HLDD). The HLDD model of the processor gets generated from its Instruction Set Architecture. The HLDD model is then used together with beforehand prepared assembly program templates in the generation of the complete self-test program. The research presented in this paper includes examples of test generation for the 32-bit SPARCv8 microprocessor Leon 3. The experimental results demonstrate that automatically generated SBST program obtains comparable to the state-of the art fault coverage data.
Źródło:
International Journal of Microelectronics and Computer Science; 2017, 8, 2; 57-64
2080-8755
2353-9607
Pojawia się w:
International Journal of Microelectronics and Computer Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Metoda testowania i diagnostyki specjalizowanych urządzeń sterowania ruchem drogowym
Method of testing and diagnostics of specialized road traffic control devices
Autorzy:
Firląg, K.
Powiązania:
https://bibliotekanauki.pl/articles/309606.pdf
Data publikacji:
2017
Wydawca:
Instytut Naukowo-Wydawniczy "SPATIUM"
Tematy:
sterowanie ruchem drogowym
urządzenia sterowania ruchem drogowym
BIST
bezpieczeństwo ruchu drogowego
road traffic control
traffic control devices
road safety
built-in self-test
Opis:
Użycie układów programowalnych do realizacji specjalizowanych urządzeń sterowania ruchem drogowym wymaga specyficznego podejścia do modelowania i testowania tych urządzeń. Ważna rola tych urządzeń w systemie sterowania i duży wpływ na bezpieczeństwo ruchu, wymaga wykorzystania nowoczesnych metod testowania i diagnostyki. W artykule przedstawiona została metoda testowania i diagnostyki specjalizowanych sterowników ruchu drogowego. Omówiono rozwiązania umożliwiające wykrycie błędów i uszkodzeń realizacji urządzeń oraz uszkodzeń powstających podczas eksploatacji. Uszkodzenia te możliwe są do wykrycia jedynie podczas testowania fizycznego urządzenia lub jego prototypu. Przedstawiono metody realizacji wbudowanego testowania sterowników BIST. Zaproponowano architektury BIST zarówno dla testowania współbieżnego jak i prewencyjnego. Przeanalizowano wpływ różnych struktur BIST na parametry użytkowe sterowników.
The use of programmable systems for realization of specialized road traffic control devices requires a specific approach to modelling and testing of the devices. A significant role of these devices within the traffic control system as well as an enormous impact on traffic safety demands application of modern methods of testing and diagnostics. The paper presents the method of testing and diagnostics of specialized road traffic controllers. Solutions have been discussed allowing for detection of errors and defects within device realization, and defects arising during exploitation. These defects are possible to be detected only during physical testing of the device or its prototype. Methods of realization of built-in self-test (BIST) have been presented. BIST architectures have been proposed both for concurrent as well as preventive testing. The influence of various BIST structures on operational parameters of controllers have been analysed.
Źródło:
Autobusy : technika, eksploatacja, systemy transportowe; 2017, 18, 12; 869-872, CD
1509-5878
2450-7725
Pojawia się w:
Autobusy : technika, eksploatacja, systemy transportowe
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Multiple – Equation Models of Ordered Dependent Variables in Exploration of The Results of Rehabilitation of Locomotive Organ Disorders
Autorzy:
Grosman, Jerzy
Kowerski, Mieczysław
Powiązania:
https://bibliotekanauki.pl/articles/465998.pdf
Data publikacji:
2011
Wydawca:
Główny Urząd Statystyczny
Tematy:
Rehabilitation of locomotive organ disorders
Weiss test
multiple- equation model of ordered dependent variable
maximum likelihood estimation McFadden determination coefficient - pseudo R2
count R-squared
probability of the norm in the self-service test
Opis:
In the present paper concerning the analysis of the factors determining patient’s self-service during the admission and release from hospital a two-equation model of ordered dependent variables is proposed. These types of models are especially useful when the results of rehabilitation of locomotive organ disorders are not described by means of exact values obtained by mechanical measurements but they are described by means of qualitative valuation (ranking) made by a therapist when the distances between neighbouring ranks are not known. The advantages of the proposed model were presented on the basis of the results of estimation based on data of 4063 patients of hospitals from Mazowieckie and Warmińsko-Mazurskie provinces.
Źródło:
Statistics in Transition new series; 2011, 12, 1; 157-178
1234-7655
Pojawia się w:
Statistics in Transition new series
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The assessment of the pollutant emission from the self ignition engine in its different operating states
Autorzy:
Chłopek, Z.
Powiązania:
https://bibliotekanauki.pl/articles/223806.pdf
Data publikacji:
2014
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
self ignition engine
pollutant emission
static test
dynamic test
silnik wysokoprężny
emisja zanieczyszczeń
test statyczny
test dynamiczny
Opis:
Paper presents the results of pollutant emission tests from the self ignition engine in various states of its operation. Engine operating states were obtained on the engine test stand. The investigations were conducted in static and dynamic tests, both standard used in the type approval procedures as special ones, simulating specific engine operating conditions. The specific brake emission of carbon monoxide as well as those of hydrocarbons, nitrogen oxides and particulate matter, averaged during the tests, have been determined. The influence of the engine operating states on the pollutant emission of impurities has been evaluated. Very high sensitivity was established of the pollutant specific brake emission on the operating states of the engine, both static ones and dynamic.
Źródło:
Archives of Transport; 2014, 29, 1; 7-16
0866-9546
2300-8830
Pojawia się w:
Archives of Transport
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Polish Validation of the Delaying Gratification Inventory
Autorzy:
Dymek, Aleksandra
Jurek, Paweł
Powiązania:
https://bibliotekanauki.pl/articles/2127058.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
gratification delay
test validation
risky behaviors
self-control
Opis:
Delaying of gratification is the ability to defer immediate reward for long-term goals (Mischel, Ebbesen, 1970). The inability to do so may lead to health problems connected with, for instance, stimulants, risky sexual behaviors or binge eating (Hoerger, Quirk, Weed, 2011). In Poland there is no inventory measuring the aforementioned phenomenon. That is the reason why Polish validation of the Delaying Gratification Inventory (DGI) is really desirable. The article presents collected results related to the factor structure and reliability of the Polish version of the DGI. Additionally, its outcomes were correlated with results of the Polish version of the Self-control Scale (Tangney, Baumeister, & Boone, 2004; Polish validation: Pilarska & Baumeister, 2018) and the Risky Behaviors Test (Studenski, 2004) to precise its validity. The whole questionnaire with the key for further use is enclosed.
Źródło:
Polish Psychological Bulletin; 2018, 49, 1; 107-117
0079-2993
Pojawia się w:
Polish Psychological Bulletin
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Water Quality Trends of the Tisa River Along its Flow Through Serbia
Trendy zmian jakości wody rzeki Tisa wzdłuż jej biegu przez Serbię
Autorzy:
Dundjerski, J. J.
Savic, R.
Grabic, J.
Blagojevic, B.
Powiązania:
https://bibliotekanauki.pl/articles/1813916.pdf
Data publikacji:
2017
Wydawca:
Politechnika Koszalińska. Wydawnictwo Uczelniane
Tematy:
water quality
pollution
trend
Mann-Kendall test
self-purification
jakość wody
zanieczyszczenie
test Manna-Kendalla
samooczyszczanie
Opis:
The problem of the paper is water quality of the water body Tisa which geographically belongs to Serbia. The scope of the analyses are water quality monitoring data of the Tisa River at tree measuring points along its flow through Serbia: Martonos, Novi Becej and Titel in period 2004-2014. The analyses encompassed conductivity, dissolved oxygen, BOD5, COD, nitrates and total phosphorus. Assessment of water quality has been conducted by the application of contemporary classifications and criteria of the Republic of Serbia. Reference conditions for achieving excellent ecological status, I class of water quality are achieved for conductivity, dissolved oxygen, along investigated section (measuring points: Martonos, Novi Becej and Titel) and BOD5 at the measuring point Martonos. Downstream at measuring points Novi Becej and Titel for BOD5 water quality belongs to class II. According to concentrations of COD, nitrates and total phosphorus water quality belongs exclusively to class II. Linear regression analyses was applied for determining trend lines of parameters, while Mann-Kendell test in most cases (14/18), i.e. 78%, has confirmed nonexistence of significant trend. Water quality during the past decade is stable. A statistically significant trend was confirmed in 4 cases: nitrates (measuring point Martonos, descending trend), BOD5 and total phosphorus (measuring point Novi Becej, descending trend), and dissolved oxygen (measuring point Titel, increasing trend). Signs of these trends speak in favor of future improvement of water quality of the Tisa River in Serbia.
W artykule opisano jakość wody w rzece Tisa, która geograficznie należy do Serbii. Zakres analiz obejmuje są dane dotyczące jakości wody w rzece Tisa w punktach pomiarowych wzdłuż biegu przez Serbię: Martonos, Novi Becej i Titel w latach 2004-2014. Analizą objęto: przewodnictwo, tlen rozpuszczony, BZT5, ChZT, azotany i fosfor ogólny. Ocena jakości wody została przeprowadzona przez zastosowanie aktualnej klasyfikacji i kryteriów w Republice Serbii. Warunki parametrów odpowiadające doskonałemu stanowi ekologicznemu, I klasy jakości wody, osiągnięto dla przewodności, tlenu rozpuszczonego, wzdłuż całego badanego odcinka (punkty pomiarowe: Martonos, Novi Becej i Titel) oraz BZT5, w punkcie pomiarowym Martonos. W dolnym biegu rzeki, w punktach pomiarowych Novi Becej i Titel dla BZT5 wody należą do klasy II. Jeśli chodzi o ChZT, azotany i fosfor całkowity jakość wody należy do klasy II. W celu określenia linii trendu parametrów zastosowano analizę regresji liniowej, a test Manna-Kendalla, w większości przypadków (14/18), tj. 78%, potwierdził brak znaczącego trendu. Jakość wody w ciągu ostatnich dziesięciu lat jest stabilna. W 4 przypadkach stwierdzono statystycznie istotną tendencję: azotany (punkt pomiarowy Martonos, tendencja spadkowa), BZT5 i fosfor ogólny (punkt pomiarowy Novi Becej, tendencja spadkowa) oraz tlen rozpuszczony (punkt pomiarowy Titel, tendencja wzrostowa). Trendy mogą oznaczać poprawą jakości wody rzeki Tisa w Serbii w przyszłości.
Źródło:
Rocznik Ochrona Środowiska; 2017, Tom 19; 17-35
1506-218X
Pojawia się w:
Rocznik Ochrona Środowiska
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effects of Agricultural Students’ Self-Efficacy Beliefs and Test Anxiety on their Achievement Motivation and Academic Performance
Autorzy:
Pouratashi, Mahtab
Zhub, Chang
Mohammadi, Hamid Movahed
Rezvanfara, Ahmad
Hosseinia, Seyyed Mahmoud
Powiązania:
https://bibliotekanauki.pl/articles/16530336.pdf
Data publikacji:
2013-12-31
Wydawca:
Wydawnictwo Adam Marszałek
Tematy:
achievement motivation
academic performance
self-efficacy beliefs
test anxiety
agricultural students
Opis:
In this study, the influences of agricultural students’ self-efficacy beliefs and test anxiety on their achievement motivation and academic performance were examined. A sample of 466 students from Iranian Colleges of agriculture participated in this study. A questionnaire was used for data collection. Data were analyzed descriptively and inferentially using SPSS/win and AMOS graphic. The findings revealed that self-efficacy beliefs had more effect on motivation to approach success and academic performance than test anxiety. In contrast, test anxiety had more effect on motivation to avoid failure than self-efficacy beliefs. In addition, motivation to approach success had more effect on academic performance than motivation to avoid failure.
Źródło:
The New Educational Review; 2013, 34; 85-98
1732-6729
Pojawia się w:
The New Educational Review
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Unconscious motivation. Part I: Implicit attitudes toward L2 speakers
Autorzy:
Al-Hoorie, Ali H.
Powiązania:
https://bibliotekanauki.pl/articles/780935.pdf
Data publikacji:
2016
Wydawca:
Uniwersytet im. Adama Mickiewicza w Poznaniu
Tematy:
implicit attitudes
Implicit Association Test
motivation
ideal L2 self
explicit–implicit correspondence
Opis:
This paper reports the first investigation in the second language acquisition field assessing learners’ implicit attitudes using the Implicit Association Test, a computerized reaction-time measure. Examination of the explicit and implicit attitudes of Arab learners of English (N = 365) showed that, particularly for males, implicit attitudes toward L2 speakers are associated with self-reported openness to the L2 group and with strength of correlations among attitudinal and motivational variables. Implicit attitudes also moderated important paths in the L2 Motivational Self System. The paper concludes that implicit attitudes seem to be a meaningful individual difference variable, adding a new dimension to our understanding of language motivation.
Źródło:
Studies in Second Language Learning and Teaching; 2016, 6, 3; 423-454
2083-5205
2084-1965
Pojawia się w:
Studies in Second Language Learning and Teaching
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wpływ warunków eksploatacji rur wentylacyjnych na zmiany właściwości polipropylenu samogasnącego, z którego były wytworzone
The influence of operating conditions on changes in the properties of ventilation pipes made of self-extinguishing polypropylene
Autorzy:
Wróblewski, R.
Osiński, P.
Stosiak, M.
Cieślicki, R.
Powiązania:
https://bibliotekanauki.pl/articles/297631.pdf
Data publikacji:
2017
Wydawca:
Politechnika Częstochowska. Wydawnictwo Politechniki Częstochowskiej
Tematy:
polypropylene self-extinguishing
tensile test
bending test
impact test
hardness measurement
ventilation pipe
polipropylen samogasnący
próba rozciągania
próba zginania
próba udarności
pomiar twardości
rury wentylacyjne
Opis:
The article presents the results of comparative studies of selected mechanical properties (e.g. tensile modulus, tensile stress, notched impact, hardness) of self-extinguishing polypropylene (PPs) samples from three ventilation ducts. The samples were drawn from conduits used for a period of three years inside and outside the building (roof of the building) and, for comparison, from the new conduit. The climatic conditions on which the ventilation duct, placed on the roof, is exposed are temperate climate, group of warm climates, transitional type. Six pieces of samples were prepared for each material from each conduit to determine the mechanical properties. The results of the measurements are also compared with the catalog data provided by two manufacturers of this type of material. Based on the investigations of selected mechanical properties of self-extinguishing polypropylene derived from the operating elements of ventilation ducts, it can be stated that after three years of their use, no significant deterioration of the tested features of the material was observed. However, the impact strength and hardness assays have already shown changes in these properties for samples taken from the ducts used in comparison with the samples from the new duct. These data may indicate that the polypropylene aging process has started as a result of its operation for a period of three years both inside and outside the premises. However, comparing these results with catalog data for plastics dedicated to such applications, the stated changes in some properties do not disqualify the product for further use.
W artykule przedstawiono wyniki badań porównawczych wybranych właściwości mechanicznych PPs (polipropylen samogasnący) dla próbek pobranych z trzech przewodów wentylacyjnych. Badaniom poddano próbki pochodzące z przewodów wentylacyjnych pracujących w różnych warunkach. Dla porównania do badań dołączono próbki pobrane z nowych przewodów. W celu wyznaczenia wybranych właściwości mechanicznych wykonywano analizy sześciu równoległych próbek. Wyniki pomiarów zestawiono z danymi katalogowymi podawanymi przez dwóch producentów tego typu elementów.
Źródło:
Inżynieria i Ochrona Środowiska; 2017, 20, 1; 121-130
1505-3695
2391-7253
Pojawia się w:
Inżynieria i Ochrona Środowiska
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Thermomechanical Properties of Vulcanized Rubber investigated by Testing Machine and Infrared Camera
Autorzy:
Staszczak, M
Pieczyska, E. A.
Maj, M.
Urbański, Ł.
Odriozola, I.
Martin, R.
Powiązania:
https://bibliotekanauki.pl/articles/114054.pdf
Data publikacji:
2015
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
vulcanized rubber
self-healing polyurethane
tension test
thermo-mechanical couplings
temperature changes
infrared camera
Opis:
: Experimental results of effects of thermomechanical couplings occurring both in natural vulcanized rubber and rubber with self-healing polyurethane subjected to tension at different strain rates are presented. Mechanical characteristics were recorded by testing machine, while the sample temperature changes accompanying the deformation process was measured by infrared camera. The goal was to investigate influence of self-healing polyurethane on the rubber mechanical and thermomechanical properties. It was found that the introduction of the self-healing polyurethane ensures the higher elasticity and the lower tensile strength of the rubber. It was also confirmed that the material is very sensitive to the strain rate; the higher the strain rate, the higher the values of the stress and temperature increases have been obtained.
Źródło:
Measurement Automation Monitoring; 2015, 61, 6; 206-209
2450-2855
Pojawia się w:
Measurement Automation Monitoring
Dostawca treści:
Biblioteka Nauki
Artykuł
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