Temat: aging test - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Examination of the Electric Field Intensity Distribution Between Wet Surfaces During Cable Aging Process
Autorzy:: Gunes, I.
Powiązania:: https://bibliotekanauki.pl/articles/1032064.pdf
Data publikacji:: 2017-03
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: Cable insulation
electric field
dry band arcing
aging test
Opis:: In this study, electric field effect was investigated by dry band arcing test method. ADSS (all-dielectric self-supporting) cables are usually placed on power grids. These cables are affected by temperature and are exposed to many environmental effects such as wind and UV rays. In this study, the effect of water flow over ADSS cable on electric surface erosion on dry surfaces was investigated by electric arcing method, according to IEEE 1222 standard and the electric field intensity at the surface and the electric potential distribution were analyzed using the finite element method.
Źródło:: Acta Physica Polonica A; 2017, 131, 3; 548-550
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Aging of carbon nanotube-filled fluoroelastomer in oil-based drilling fluid
Starzenie fluoroelastomeru napełnionego nanorurkami węglowymi w płuczce wiertniczej na bazie oleju
Autorzy:: Heidarian, J.
Powiązania:: https://bibliotekanauki.pl/articles/1205317.pdf
Data publikacji:: 2018
Wydawca:: Sieć Badawcza Łukasiewicz - Instytut Chemii Przemysłowej
Tematy:: carbon nanotube
fluoroelastomer
carbon black
oil-based drilling mud
aging test
atomic force microscopy
optical microscopy
nanorurki węglowe
sadza węglowa
płuczka wiertnicza
test starzeniowy
mikroskopia sił atomowych
mikroskopia optyczna
Opis:: Carbon nanotube (CNT)-, carbon black (CB)-filled fluoroelastomer (FE) and unfilled FE compounds were prepared (CNT/FE, CB/FE and FE). The oil-based drilling mud (OBD) aging resistance of these elastomers were assessed by tests of atomic force microscopy (AFM), optical microscopy and X-ray diffractometry (XRD). Weight gain, swelling and hardness were also determined. The whole conclusion is that CNT/FE can be used as O-rings in OBD drilling while FE and CB/FE can not.
Metodami mikroskopii optycznej, mikroskopii sił atomowych (AFM) i dyfraktometrii rentgenowskiej (XRD) badano odporność starzeniową kompozytów na bazie fluoroelastomeru (FE) napełnianego nanorurkami węglowymi (CNT) lub sadzą węglową (CB), poddanych działaniu płuczki wiertniczej na bazie oleju (OBD). Oznaczano też przyrost masy, stopień spęcznienia i twardość próbek poddanych starzeniu w środowisku płynu wiertniczego. Stwierdzono, że fluoroelastomer napełniony nanorurkami węglowymi jest odporny na działanie płynu wiertniczego i można go stosować w materiale uszczelek w urządzeniach wiertniczych wykorzystujących płuczki na bazie oleju.
Źródło:: Polimery; 2018, 63, 3; 191-212
0032-2725
Pojawia się w:: Polimery
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Resistance to aging research in sea water composites with the polyester-glass recyclate
Autorzy:: Hajdukiewicz, G.
Panasiuk, K.
Kyzioł, L.
Powiązania:: https://bibliotekanauki.pl/articles/949506.pdf
Data publikacji:: 2018
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: recycling
polyester-glass recyclate
aging of composites
tensile test
Opis:: Composites are materials used for various types of constructions in the automotive industry, aviation, and shipbuilding. Due to the wide use of these materials, there is a problem with their recycling. Such material requires appropriate processing technology, which has been developed to obtain a recyclate with a specific granulation. The use of hand laminating technology made composites with the addition of polyester and glass recyclate with granulation of 1.2, as well as content: 0%, 20%, 30%. These types of materials are exposed to various types of atmospheric factors that affect their durability. Aging is defined as changes in the composite when exposed to atmospheric conditions, such as sunlight, temperature, thermal cycles, water in various forms and wind. This article uses recycled polyester and glass composites to investigate the effect of aging in seawater on their strength properties. These tests can be used to pre-assess the applicability of newly developed materials as construction or protective coatings. They were carried out on a specially prepared station for accelerated tests, with elevated temperature (35ºCC), as well as brine spray imitating sea atmosphere. The method is used to accelerate the aging processes occurring in composite materials. Samples were subjected to cycles of 5, 30 and 60 days respectively. Samples were weighed and measured before and after each cycle. In order to investigate the effect of aging on strength properties, the composites underwent a static tensile test in accordance with the standard for plastics. Studies have shown that as a result of the aging process, the strength properties decrease slightly, which affects the favourable assessment of these materials as constructional.
Źródło:: Journal of KONES; 2018, 25, 3; 219-225
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Improving heat aging and mechanical properties of fluoroelastomer using carbon nanotubes
Autorzy:: Heidarian, J.
Hassan, A.
Powiązania:: https://bibliotekanauki.pl/articles/949397.pdf
Data publikacji:: 2017
Wydawca:: Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
Tematy:: fluoroelastomers
crystallization
tension test
X-ray diffraction topography
aging
Opis:: Carbon nanotube (CNT)-, carbon black (CB)-filled fluoroelastomer (FE) and unfilled-FE compounds were prepared (CNT/FE, CB/FE and FE). The compounds were subjected to heat air aging and characterized by tensile test and X-Ray Diffraction (XRD) analysis. Results show that CNT improved tensile properties of FE before and after aging. All samples show stress induced crystallization (SIC) during tension. XRD results show that under all conditions, the crystals were in the form of γ-phase. For both aged and un-aged specimens, the degree of crystallinity (X_c) is low. After tensile stretching, X_c of un-aged specimens increases tremendously, with larger crystal size. Under the same conditions, the order of elongation at break (EL) was FE > CB/FE > CNT/FE. Normal modulus (NM) and tangent modulus (TM) at the same conditions was in the order of CNT/FE > CB/FE > FE. Tensile strength had the order of CNT/FE > CB/FE > FE.
Źródło:: Polish Journal of Chemical Technology; 2017, 19, 1; 132-142
1509-8117
1899-4741
Pojawia się w:: Polish Journal of Chemical Technology
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Influence of aging solutions on wear resistance and hardness of selected resin-based dental composites
Autorzy:: Chladek, G.
Basa, K.
Żmudzki, J.
Malara, P.
Nowak, A. J.
Kasperski, J.
Powiązania:: https://bibliotekanauki.pl/articles/306782.pdf
Data publikacji:: 2016
Wydawca:: Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:: właściwości
mikrotwardość
kompozyty stomatologiczne
tarcie
test
properties
microhardness
dental composite
friction
wear test
aging solution
Opis:: Purpose: The purpose of this study was to investigate the effect of different plasticizing aging solutions on wear resistance and hardness of selected universal resin-based dental composites. Methods: Three light cured (one nanofilled, two microhybride) and one hybride chemical cured composites were aged at 37 °C for 48 h in distillated water, ethyl alcohol solution or Listerine mouthwash. After aging the microhardness tests were carried out and then tribological tests were performed in the presence of aging solution at 37 °C. During wear testing coefficients of friction were determined. The maximal vertical loss in micrometers was determined with profilometer. Results: Aging in all liquids resulted in a significant decrease in hardness of the test materials, with the largest values obtained successively in ethanol solution, mouthwash and water. The effect of the liquid was dependent on the particular material, but not the type of material (interpreted as the size of filler used). Introduction of mouthwash instead of water or ethanol solution resulted in a significant reduction in the coefficient of friction. The lowest wear resistance was registered after aging in ethanol and for the chemical cured hybrid composite, but the vertical loss was strongly material dependent. Conclusions: The effect of different aging solution, including commercial mouthrinse, on hardness and wear was material dependent, and cannot be deduced from their category or filler loading. There is no simple correlation between hardness of resin-based dental composites and their wear resistance, but softening of particular composites materials during aging leads to the reduction of its wear resistance.
Źródło:: Acta of Bioengineering and Biomechanics; 2016, 18, 3; 43-52
1509-409X
2450-6303
Pojawia się w:: Acta of Bioengineering and Biomechanics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: Assessment of the suitability of paper chromatography for quick diagnostics of the operating condition of engine oil
Autorzy:: Molenda, Jarosław
Wolak, Artur
Zając, Grzegorz
Cieloch, Patrycja
Chudy, Dominik
Powiązania:: https://bibliotekanauki.pl/articles/24200837.pdf
Data publikacji:: 2023
Wydawca:: Polska Akademia Nauk. Polskie Naukowo-Techniczne Towarzystwo Eksploatacyjne PAN
Tematy:: engine oil
oil aging
paper chromatography
oil operation
single-drop test
oil condition diagnostics
tissue chromatography
Opis:: Paper chromatography is a method that allows rapid assessment of the condition and identification of fuel, water and soot contaminants in engine oil. The paper contains an analysis of the suitability of rapid paper chromatography for assessing the operating quality of engine oil. It takes into account the comparison of physicochemical parameters by classical methods with the quality of commercial paper chromatography. The presented research allowed verifying the suitability of paper chromatography for laboratory evaluation of engine oil quality. It was found that a more extensive analysis of the oil condition is possible provided that the chromatographic separation time of oil dispensed onto filter paper is increased from 1 minute to 40 minutes. Linear relationships were observed between the surface area of the stain core after 40-minute separation and selected viscosity parameters (e.g. kinematic viscosity measured at 40°C). Based on rapid paper chromatography, it was found that reasonable decisions can be made about the quality of engine oil, and thus about replacement or further use of the oil.
Źródło:: Eksploatacja i Niezawodność; 2023, 25, 2; art. no. 162912
1507-2711
Pojawia się w:: Eksploatacja i Niezawodność
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 7.

Tytuł:: Recent Developments and Needs in Materials Used for Personal Protective Equipment and Their Testing
Autorzy:: Dolez, P. I.
Vu-Khanh, T.
Powiązania:: https://bibliotekanauki.pl/articles/90265.pdf
Data publikacji:: 2009
Wydawca:: Centralny Instytut Ochrony Pracy
Tematy:: personal protective equipment
protective clothing
protective gloves
heat resistance
mechanical risks
protection against chemicals
test methods
aging
Opis:: The field of personal protective equipment (PPE) has led to several high technology innovations. Indeed, improved protection against the various possible encountered risks is looked for, in particular at the workplace. This has generated the development of new materials and new manufacturing technologies, as well as the introduction of new applications for existing ones. However, the remaining challenges are numerous. This paper presents some of the new technologies introduced in the field of protective clothing against heat and flames, mechanical risks and chemical aggressors. It also describes new challenges that are currently worked on, in particular the effect of service aging and the need for testing methods that reproduce realuse conditions. Finally, it discusses various existing and potential applications of nanomaterials and smart textiles for PPE.
Źródło:: International Journal of Occupational Safety and Ergonomics; 2009, 15, 4; 347-362
1080-3548
Pojawia się w:: International Journal of Occupational Safety and Ergonomics
Dostawca treści:: Biblioteka Nauki

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