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    Tytuł:
    Evaluation of fracture parameters for crack problems in fgm by a meshless method
    Wyznaczanie parametrów pękania dla szczelin w materiałach funkcjonalnie gradientowych metodą bezsiatkową
    Autorzy:
    Sladek, J.
    Sladek, V.
    Zhang, C.
    Tan, C.-L.
    Powiązania:
    https://bibliotekanauki.pl/articles/280798.pdf
    Data publikacji:
    2006
    Wydawca:
    Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
    Tematy:
    parametry pękania
    analiza szczelin
    naprężenia T
    materiały funkcjonalnie gradientowe
    stress intensity factors
    T-stress
    meshless methods
    hermoelasticity
    nonhomogenity
    orthotropic materials
    Opis:
    A meshless method based on the local Petrov-Galerkin approach is proposed for crack analysis in two-dimensional (2D), anisotropic and linear elastic solids with continuously varying material properties. Both quasi-static thermal and transient elastodynamic problems are considered. For time-dependent problems, the Laplace transform technique is utilized. The analyzed domain is divided into small subdomains of circular shapes. A unit step function is used as the test function in the local weak form. It leads to Local Integral Equations (LIE) involving a domain-integral only in the case of transient dynamic problems. The Moving Least Squares (MLS) method is adopted for approximating the physical quantities in the LIE. Efficient numerical methods are presented to compute the fracture parameters, namely, the stress intensity factors and the T-stress, for a crack in Functionally Graded Materials (FGM). The path-independent integral representations for stress intensity factors and T-stresses in continuously non-homogeneous FGM are presented.
    Przedstawiono bezsiatkową metodę analizy szczelin opartą na podejściu Petrova-Galerkina dla dwuwymiarowych liniowo-sprężystych i anizotropowych ośrodków o zmieniających się własnościach materiałowych. Rozważono zarówno kwazistatyczne problemy naprężeń cieplnych, jak i zagadnienia elastodynamiki, w których zastosowano aparat transformacji Laplace'a. Badany obszar podzielono na małe podobszary kołowe. Jako funkcję testową w lokalnej, słabej postaci zastosowano jednostkową funkcję schodkową, co prowadzi do lokalnych równań całkowych (LIE). Metodę ruchomych najmniejszych kwadratów (MLS) zastosowano do przybliżenia wielkości fizycznych w LIE. Przedstawiono efektywne metody numeryczne wyznaczania parametrów pękania, a w szczególności współczynników koncentracji naprężeń oraz naprężeń T dla szczelin w materiałach funkcjonalnie gradientowych (FGM). Przedstawiono niezależne od drogi całkowania reprezentacje tych parametrów w materiałach FGM o kontynualnie zmieniającej się niejednorodności.
    Źródło:
    Journal of Theoretical and Applied Mechanics; 2006, 44, 3; 603-636
    1429-2955
    Pojawia się w:
    Journal of Theoretical and Applied Mechanics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Osteology of the Late Cretaceous alvarezsauroid Linhenykus monodactylus from China and comments on alvarezsauroid biogeography
    Autorzy:
    Xu, X.
    Upchurch, P.
    Ma, Q.
    Pittman, M.
    Choiniere, J.
    Sullivan, C.
    Hone, D.W.E.
    Tan, Q.
    Tan, L.
    Xiao, D.
    Han, F.
    Powiązania:
    https://bibliotekanauki.pl/articles/20629.pdf
    Data publikacji:
    2013
    Wydawca:
    Polska Akademia Nauk. Instytut Paleobiologii PAN
    Tematy:
    osteology
    Cretaceous
    Late Cretaceous
    alvarezsauroid
    Linhenykus monodactylus
    China
    biogeography
    Dinosauria
    Theropoda
    Parvicursorinae
    Treefitte
    dispersal
    vicariance
    sympatry
    Wulansuhai Formation
    Inner Mongolia
    Opis:
    The alvarezsauroid theropod Linhenykus monodactylus from the Upper Cretaceous of Inner Mongolia, China is the first knownmonodactyl non−avian dinosaur, providing important information on the complex patterns of manual evolution seen in alvarezsauroids. Herewe provide a detailed description of the osteology of this taxon. Linhenykus shows a number of fea− tures that are transitional between parvicursorine and non−parvicursorine alvarezsauroids, but detailed comparisons also re− veal that some characters had a more complex distribution. We also use event−based tree−fitting to perform a quantitative analysis of alvarezsauroid biogeography incorporating several recently discovered taxa. The results suggest that there is no statistical support for previous biogeographic hypotheses that favour pure vicariance or pure dispersal scenarios as explana− tions for the distributions of alvarezsauroids across SouthAmerica, NorthAmerica andAsia. Instead, statistically significant biogeographic reconstructions suggest a dominant role for sympatric (or “within area”) events, combined with a mix of vicariance, dispersal and regional extinction. At present the alvarezsauroid data set is too small to completely resolve the biogeographic history of this group: future studies will need to create larger data sets that encompass additional clades.
    Źródło:
    Acta Palaeontologica Polonica; 2013, 58, 1
    0567-7920
    Pojawia się w:
    Acta Palaeontologica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effect of Nitrogen on the Dynamic Recrystallization Behaviors of Vanadium and Titanium Microalloyed Steels
    Autorzy:
    Baochun, Z.
    Tan, Z.
    Guiyan, L.
    Qiang, L.
    Powiązania:
    https://bibliotekanauki.pl/articles/353138.pdf
    Data publikacji:
    2018
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    vanadium titanium and nitrogen microalloyed steels
    dynamic recrystallization
    effect of nitrogen
    critical strain
    hot deformation behavior
    Opis:
    The hot deformation behaviors of vanadium and titanium microalloyed steels containing different nitrogen contents were studied by performing hot compression tests at various temperatures ranging from 900 to 1050°C and strain rates ranging from 0.1 to 10 s-1. The flow stress curves of the experimental steels were analyzed and the effect of nitrogen on the hot deformation behaviors of the vanadium titanium and nitrogen microalloyed steels was discussed. The results reveal that the flow stress increases with increasing nitrogen addition and the critical strain for the onset of dynamic recrystallization(DRX) also increases by adding nitrogen. Therefore, larger strain should be applied to start DRX in the experimental steel containing higher nitrogen content. The material constants and activation energies for hot deformation were determined by regression method and the effect of nitrogen on the activation energy was also discussed referring to the activation energies from the previous researches. It is found that higher nitrogen content contributes to higher activation energy for hot deformation. Furthermore, the DRX kinetics models for the experimental steels were constructed by regression method and the effect of nitrogen on the DRX rate under various deformation conditions was analyzed. And the inhibition of DRX by increasing nitrogen content is confirmed.
    Źródło:
    Archives of Metallurgy and Materials; 2018, 63, 1; 379-386
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Comparison of grinding characteristics in high-pressure grinding roller (HPGR) and cone crusher (CC)
    Autorzy:
    Liu, L.
    Tan, Q.
    Li, W.
    Lv, L.
    Powiązania:
    https://bibliotekanauki.pl/articles/951829.pdf
    Data publikacji:
    2017
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    HPGR
    grinding kinetics
    grinding technical efficiency
    ultra-crushing
    classified grinding
    Opis:
    We comparatively studied the ball mill grinding characteristics of comminuted hematite products using a high-pressure grinding roll (HPGR) and a conventional cone crusher (CC). The major properties, including grinding kinetics and technical efficiency (Et), were investigated. The parameters in m-th order grinding kinetics were analyzed, and grinding specific rates were visualized. Ore particles experienced three inherent stages in ball grinding mills, that is i) rapid grinding of coarse fraction, ii) dynamic grinding of medium size fraction, and iii) single grinding of medium size fraction. Particles with size -0.043+0.031 mm were used into dynamic grinding stage earlier than particles -0.105+0.043 mm, and then over-grinding of fines occurred easily. Compared with CC products, HPGR products had significantly shorter turning time points in three breakage stages, implying that HPGR products were ground faster with earlier occurrence of fines over-grinding. HPGR products gave lower Et at a decreasing rate than the CC products for -2.0 mm and -0.5 mm feeds. Then, it showed a slightly higher value of Et for -2.0+0.5 mm feed. This indicated that fines over-grinding in HPGR full-size products were more serious under the condition of coarse grinding, whereas the efficiency was higher, and over-grinding weakened significantly in HPGR coarse products because of screening-out fines.
    Źródło:
    Physicochemical Problems of Mineral Processing; 2017, 53, 2; 1009-1022
    1643-1049
    2084-4735
    Pojawia się w:
    Physicochemical Problems of Mineral Processing
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Near-field multiple optical trapping using high order axially symmetric polarized beams
    Autorzy:
    Zhou, Z
    Tan, Q
    Zhu, L
    Yang, C
    Powiązania:
    https://bibliotekanauki.pl/articles/174886.pdf
    Data publikacji:
    2013
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    optical trapping
    surface plasmon polaritons
    axially symmetric polarized beams
    Opis:
    The near-field multiple optical trapping using high order axially symmetric polarized beams (ASPBs) is studied for the first time. First, a near-field optical trapping scheme is proposed based on the Kretschmann–Raether configuration, and surface plasmon polaritons (SPPs) field distributions excited by incident ASPBs are calculated, which present a multi-focal-spot pattern and the size of spots is much smaller than that of the diffraction limitation. Then, the gradient forces on Rayleigh dielectric particles formed by the multi-focal-spot focused field are computed, which indicates that multiple ultra-small particles with the refractive index higher than that of the ambient medium can be trapped simultaneously on the metal surface. The number and size of trapped particles can be manipulated by flexibly modifying the polarization order of incident beams, which is expected to enhance the capability of traditional optical trapping systems and provide a solution for massively parallel optical trapping of nanometer-sized particles.
    Źródło:
    Optica Applicata; 2013, 43, 2; s. 287-296
    0078-5466
    1899-7015
    Pojawia się w:
    Optica Applicata
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Short-term variation in zooplankton community from Daya Bay with outbreaks of Penilia avirostris
    Autorzy:
    Li, K.
    Yin, J.
    Tan, Y.
    Huang, L.
    Song, X.
    Powiązania:
    https://bibliotekanauki.pl/articles/47644.pdf
    Data publikacji:
    2014
    Wydawca:
    Polska Akademia Nauk. Instytut Oceanologii PAN
    Tematy:
    zooplankton
    Penilia avirostris
    outbreak
    short-term variability
    nuclear power plant
    temporal variation
    water temperature
    salinity
    chlorophyll a
    aquaculture area
    Daya Bay
    Źródło:
    Oceanologia; 2014, 56, 3
    0078-3234
    Pojawia się w:
    Oceanologia
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Response of dry matter translocation and grain yield of summer maize to biodegradable film in the North China Plain
    Autorzy:
    Tan, D.
    Guo, L.
    Liu, J.
    Fan, Y.
    Li, Q.
    Powiązania:
    https://bibliotekanauki.pl/articles/2082862.pdf
    Data publikacji:
    2020
    Wydawca:
    Polska Akademia Nauk. Instytut Agrofizyki PAN
    Tematy:
    polyethylene film
    leaf area index
    dry matter
    transfer
    yield components
    North China Plain
    Opis:
    In the North China Plain, it is a matter of urgency to explore the feasibility of using biodegradable film to replace polyethylene film. A field experiment was conducted by covering soils with polyethylene white film, biodegradable white film, biodegradable black film, while the control remained uncovered. This study analysed the effects of using different film types on summer maize dry matter accumulation and transfer, grain yield and yield components during the 2016 and 2017 summer maize growing seasons. Results showed that, for both growing seasons, compared with non-mulching, dry matter translocation, dry matter transfer efficiency of vegetative organs and grain yield for plants following polyethylene white film and biodegradable white film treatments were always lower. However, dry matter accumulation, dry matter translocation, dry matter transfer efficiency, grain yield, and the contribution of dry matter translocation to grain yield before flowering in biodegradable black film treatments significantly increased by 21.0, 33.3, 21.4, 12.6, and 18.5%, respectively. Only the black biodegradable film could increase grain yield as determined by the 1000 kernel mass. Results indicate that black biodegradable films are a viable alternative to polyethylene film in summer maize production in the North China Plain.
    Źródło:
    International Agrophysics; 2020, 34, 1; 87-94
    0236-8722
    Pojawia się w:
    International Agrophysics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Removal of uranium(VI) from aqueous solution by rice husk
    Autorzy:
    Xia, L.
    Li, R.
    Xiao, Y.
    Zheng, W.
    Tan, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/208201.pdf
    Data publikacji:
    2017
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    wheat straw
    biosorption
    uranium
    ions
    biosorpcja
    słoma zbożowa
    uran
    jony
    Opis:
    Basic aspects of uranium adsorption by rice husk have been investigated. The influences of various experimental parameters such as pH, time, adsorbent dosage, rice husk size, temperature and various concentrations of uranium on uptake were evaluated. The thermodynamics and kinetics of adsorption were analyzed by FT-IR and SEM. The adsorption capacity for uranium on rice husk increased upon increasing initial concentration of uranium and temperature, while decreased with the increase of the amount of rice husk. Maximum uranium adsorption was observed at pH = 3 and particle size between 120 μm and 150 μm. Adsorption equilibrium was achieved within 60 min. At 25 °C, the saturated adsorption capacity qmax was up to 15.14 mg/g when the initial concentration of uranium ranged from 10 to 400 mg/dm3. The adsorption of uranium followed Langmuir adsorption isotherm and according to quasi-second order kinetic equation. The calculated values of ΔH°, ΔS°, and ΔG° indicated that the biosorption process was endothermic and spontaneous. Based on FT-IR spectra it may be concluded that hydroxyl, carbonyl, P–O and Si=O groups are the main active sites.
    Źródło:
    Environment Protection Engineering; 2017, 43, 4; 41-53
    0324-8828
    Pojawia się w:
    Environment Protection Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A planning model for the chemical integrated system under uncertainty by grey programming approach
    Autorzy:
    Ren, J.
    Tan, S.
    Dong, L.
    Zhou, Z.
    Gao, S.
    Pan, C.
    Powiązania:
    https://bibliotekanauki.pl/articles/778898.pdf
    Data publikacji:
    2013
    Wydawca:
    Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
    Tematy:
    planning
    chemical integrated system
    grey programming
    Opis:
    A model to optimize the planning of the chemical integrated system comprised by multi-devices and multi-products has been proposed in this paper. With the objective to make more profits, the traditional model for optimizing production planning has been proposed. The price of chemicals, the market demand, and the production capacity have been considered as mutative variables, then an improved model in which some parameters are not constant has been developed and a new method to solve the grey linear programming has been proposed. In the grey programming model, the value of credibility can be suggested by the decision-makers, and the results of the production planning calculated by the model can help them to achieve their desired target. An actual case has been studied by the proposed methodology, and the proposed methodology can be popularized to other cases.
    Źródło:
    Polish Journal of Chemical Technology; 2013, 15, 2; 16-22
    1509-8117
    1899-4741
    Pojawia się w:
    Polish Journal of Chemical Technology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Potential risk of Mesodinium rubrum bloom in the aquaculture area of Dapeng’ao cove, China: diurnal changes in the ciliate community structure in the surface water
    Autorzy:
    Liu, H.
    Song, X.
    Huang, L.
    Tan, Y.
    Zhong, Y.
    Huang, J.R.
    Powiązania:
    https://bibliotekanauki.pl/articles/47949.pdf
    Data publikacji:
    2012
    Wydawca:
    Polska Akademia Nauk. Instytut Oceanologii PAN
    Tematy:
    potential risk
    Mesodinium rubrum
    bloom
    aquaculture area
    Dapeng'ao cove
    China
    diurnal change
    ciliate community
    surface water
    heavy rainfall
    water column
    stratification
    irradiance
    Opis:
    Diurnal changes in the structure of the ciliate community in surface waters were studied in the aquaculture area of Dapeng’ao cove, China. Two periods of heavy rainfall occurred during the study period, intensifying water column stratification and influencing the water’s properties. A total of 21 ciliate taxa from 15 genera were identified; the dominant species was Mesodinium rubrum. The maximum abundance of M. rubrum reached 3.92×104 indiv. dm−3, contributing 95.1% (mean value) to the total ciliate abundance. Diurnal changes in M. rubrum abundance were highly variable, the driving force probably being irradiance and food availability. The results suggest that M. rubrum may form blooms in aquaculture areas when there is a suitable physical regime with enriched nutrients, which is potentially harmful to the fish-farming industry.
    Źródło:
    Oceanologia; 2012, 54, 1
    0078-3234
    Pojawia się w:
    Oceanologia
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Fabrication of polymer microcomponents using CO2 laser melting technique
    Wytwarzanie mikroelementów polimerowych z zastosowaniem techniki topienia laserem CO2
    Autorzy:
    Tan, W. S.
    Zhou, J. Z.
    Huang, S.
    Zhu, W. L.
    Meng, X. K.
    Powiązania:
    https://bibliotekanauki.pl/articles/947347.pdf
    Data publikacji:
    2015
    Wydawca:
    Sieć Badawcza Łukasiewicz - Instytut Chemii Przemysłowej
    Tematy:
    molding
    polymer microcomponents
    CO2 laser
    irradiation
    numerical simulation
    formowanie
    mikroelementy polimerowe
    laser CO2
    napromienianie
    symulacja numeryczna
    Opis:
    A new method of laser melting molding to produce high-efficiency and high-quality polymer microcomponents was proposed. Numerical simulation was used to analyze the temperature changes of polymer melt during the laser irradiation process. An orthogonal experiment was also employed to investigate the factors influencing molding accuracy. The molding experiments were conducted on molds with various degrees of roughness, and the surface quality of the molded pieces was tested. The simulation analysis and experimental results showed that the laser power plays a critical role in improving the repetition accuracy. The next factors are irradiation time and mold temperature, followed by molding force. Optimized technological parameters (1.2 W of laser power, 6 mm of laser beam width, 6 s irradiation time, 150 N molding force, and 80 °C mold temperature) were applied to obtain a molded pieces with high repetition accuracy and a microstructure dimensional deviation of less than 1 µm. Using a mold with lower surface roughness provides that we can obtain a molded piece with lower roughness, the roughness difference between the mold and the molded piece was less than 0.012 µm.
    Zaproponowano nową metodę formowania mikroelementów polimerowych z zastosowaniem topienia laserowego, zapewniającą wysoką wydajność oraz dobrą jakość wytwarzanych mikroelementów. Istotnym parametrem procesu, wpływającym na jakość formowanych elementów, jest temperatura stopu polimeru. Do analizy zmian tej temperatury pod wpływem napromieniania laserem zastosowano symulację numeryczną. Zastosowano także ortogonalny plan eksperymentu w celu zbadania czynników wpływających na dokładność formowania. Formowania przeprowadzono z użyciem form o różnych stopniach chropowatości i zbadano jakość powierzchni mikroelementów. Analiza wyników symulacji i badań eksperymentalnych wykazała, że moc lasera odgrywa kluczową rolę w uzyskaniu powtarzalnej dokładności. Kolejnymi czynnikami są czas napromieniowania i temperatura formy oraz siły formujące. Zoptymalizowane parametry technologiczne (moc lasera 1,2 W, szerokość wiązki lasera 6mm, czas napromieniania 6 s, siła formująca 150 N i temperatura formowania 80 °C) zastosowano do formowania elementów z powtarzalną dużą dokładnością odtwarzania wymiarów (odchylenia wymiarów nie przekraczały 1 µm). Użycie form o mniejszej chropowatości powierzchni pozwalało także uzyskać mniejszą chropowatość mikroelementów, przy czym różnica chropowatości formy i otrzymanego elementu była mniejsza niż 0,012 µm.
    Źródło:
    Polimery; 2015, 60, 3; 192-198
    0032-2725
    Pojawia się w:
    Polimery
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Factors influencing serum chemerin and kallistatin concentrations in patients with alcohol-induced liver cirrhosis
    Autorzy:
    Prystupa, A.
    Kiciński, P.
    Luchowska-Kocot, D.
    Sak, J.
    Prystupa, T.K.
    Tan, Y.-H.
    Panasiuk, L.
    Załuska, W.
    Powiązania:
    https://bibliotekanauki.pl/articles/2082078.pdf
    Data publikacji:
    2018
    Wydawca:
    Instytut Medycyny Wsi
    Tematy:
    alcohol-induced liver cirrhosis
    chemerin
    kallistatin
    Opis:
    Introduction. In Poland, an increasing number of patients are hospitalized due to liver diseases. One of the common liver diseases is cirrhosis, which can be caused by alcohol, viral hepatitis, autoimmune processes and metabolic diseases. Materials and method. The study included 99 patients with alcoholic cirrhosis from the Lublin region of Eastern Poland. The control group consisted of 20 healthy individuals without liver disease who did not abuse alcohol. The concentrations of serum kallistatin and chemerin were determined using ELISA kits. Objective. The aim of the study is to evaluate serum levels of kallistatin and chemerin in patients with different stages of alcoholic liver cirrhosis. Results. The highest chemerin level was found in the control group – 182.6±80.4 ng/ml. In other stages of liver cirrhosis, the following levels were observed: 175.7±62.7 ng/ml in Child-Pugh stage A (Ch-P A), 150.2±59.7 ng/ml in Ch-P B and 110.3±73.6 ng/ml in Ch-P C. Significant differences in chemerin levels between controls and Ch-P C patients (p=0.01), as well as between the Ch-P A patients and Ch-P C patients (p=0.02), were demonstrated. The highest kallistatin level was demonstrated in the control group – 8.2±3.5 μg/ml. In other stages of liver cirrhosis, the following concentrations were found: 7.2±27 μg/ml in Ch-P A, 4.4±2.2 μg/ml in Ch-P B and 3.5±1.9 μg/ml in Ch-P C (Tab. 3). Statistically significant differences were observed between controls and Ch-P B patients (p<0.001), controls and Ch-P C patients (p<0.001), Ch-P A and Ch-P B patients (p=0.01), as well as Ch-P A and Ch-P C patients (<0.001). Conclusions. The levels of chemerin and kallistatin decrease with progression of liver damage during alcoholic liver cirrhosis. The impairment of its synthetic function leads to reductions in levels of the adipokines studied.
    Źródło:
    Annals of Agricultural and Environmental Medicine; 2019, 26, 1; 143-147
    1232-1966
    Pojawia się w:
    Annals of Agricultural and Environmental Medicine
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effects of Polymeric Binders on the RDX-based Explosive Response Character under Slow Cook-off Conditions
    Autorzy:
    Yan, X.
    Li, X. D.
    Zhang, Y. R.
    Liu, L.
    Zhang, X. M.
    Tan, Y. X.
    Wang, H.
    Wang, X. Q.
    Powiązania:
    https://bibliotekanauki.pl/articles/358419.pdf
    Data publikacji:
    2018
    Wydawca:
    Sieć Badawcza Łukasiewicz - Instytut Przemysłu Organicznego
    Tematy:
    RDX-based explosive
    slow cook-off experiment
    binder content
    binder type
    Opis:
    Due to safety requirements, insensitive behaviour under slow thermal heating (cook-off) conditions is a desirable behaviour for today’s munitions. In this paper a cook-off device is designed to test two groups of RDX-based PBX explosives. In the first group the binder type was varied and in the second group the binder content of the RDX-based explosive was changed. Eleven samples were examined in order to evaluate the influence of four different binders and seven different binder contents on the shell deformation and the degree of the involved reaction. The test results showed that the degree of the reaction can be improved by changing the binder content, but not by the binder type. This phenomenon was explained by the thermal-conduction theory.
    Źródło:
    Central European Journal of Energetic Materials; 2018, 15, 2; 339-350
    1733-7178
    Pojawia się w:
    Central European Journal of Energetic Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
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