21 Result(s)
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Article
Open AccessSemi-supervised graph neural networks for pileup noise removal
The high instantaneous luminosity of the CERN Large Hadron Collider leads to multiple proton–proton interactions in the same or nearby bunch crossings (pileup). Advanced pileup mitigation algorithms are design...
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Crystallization kinetics of a commercial poly(lactic acid) based on characteristic crystallization time and optimal crystallization temperature
A model is proposed to fit differential scanning calorimetry (DSC) isothermal crystallization curves obtained from the molten state at different temperatures. A commercial 3D printing polylactic acid (PLA) sam...
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Article
Boron/potassium nitrate microspheres fabricated by electrostatic spraying and their combustion characteristic as pyrotechnic ignitor
Boron/potassium nitrate (B/KNO3) microspheres are fabricated by electrostatic spraying to enhance their combustion efficiency and capability of igniting target materials. Varying composition’s effect on reactivit...
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Thermal analysis and decomposition kinetics of the dehydration of copper sulfate pentahydrate
The thermal decomposition kinetics of individual stages of copper sulfate pentahydrate (CuSO4·5H2O) was investigated by TG–DSC, and the kinetic parameters were calculated by Ozawa method and multivariate nonlinea...
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Article
Thermal analysis and crystallization kinetics of polyurethane
Non-isothermal crystallization kinetics of polyurethane was investigated by differential scanning calorimetry at different cooling rates. Various macro-kinetic models, including Ozawa, Jeziorny, and Mo models,...
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Article
Electrospun nanofiber-based nanoboron/nitrocellulose composite and their reactive properties
Nanometal fuels have a great potential in energetic field for their high reactivity and their low ignition temperature. However, their high surface energy makes them aggregate. In this work, the electrospinnin...
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Article
Nitroglycerine migration to polyurethane used for inhibition of double-base propellants through thermal analysis techniques
Nitroglycerine (NG) migration in polyurethane (PU) inhibitor, which leads to ballistic malfunctions or tearing-down of the rockets for double-base rocket propellants, is investigated by thermal analysis–thermo...
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Load capacity prediction of in-service timber utility poles considering wind load
This paper presents a numerical investigation on the influence of different types of damage to the load capacity of in-service timber utility poles. Current design codes do not highlight a pole’s strength perf...
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Article
Separation of longitudinal and flexural wave in a cylindrical structure based on sensor arrangement for non-destructive evaluation
Low strain integrity testing is commonly used to assess the in situ condition of the poles or piles. For poles, it is important to calculate the embedment length and location of damage which is highly influenc...
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Article
Thermal reaction properties of aluminum/copper (II) oxide/poly(vinylidene fluoride) nanocomposite
The thermal reaction properties of the aluminum nanoparticles/copper (II) oxide nanoparticles/poly(vinylidene fluoride) (Al-NPs/CuO-NPs/PVDF) nanocomposite (mass ratio of Al-NPs/CuO-NPs/PVDF = 20/60/20) were i...
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Article
Design and study of ADC/BCN/metal oxide gas-generating agents
Characterized with low burning temperature and low concentration of toxic gases, the azodicarbonamide (ADC), basic cupric nitrate (BCN) and 10 % metal oxide (CuO, ZnO, MnO2, Fe2O3) gas-generating agents have been...
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The effect of 5-amino-1H-tetrazole on the combustion performance and ignition capability of boron/potassium nitrate igniter
The performance of boron/potassium nitrate/5-amino-1H-tetrazole-based pyrotechnic igniter, used as an initiator in airbag gas generators, was investigated. It was found that 5-amino-1H-tetrazole could signific...
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Article
Elastic wave modes for the assessment of structural timber: ultrasonic echo for building elements and guided waves for pole and pile structures
This paper presents the state-of-the-art of using non-destructive testing (NDT) methods based on elastic waves for the condition assessment of structural timber. Two very promising approaches based on the prop...
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Article
Effect of the antioxidants on the stability of poly(vinyl butyral) and kinetic analysis
The effect of several kinds of antioxidants on the stability of poly(vinyl butyral) (PVB) under air atmosphere is studied by thermogravimetry–differential scanning calorimetry method and kinetic analysis. Afte...
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Article
A model-free method for evaluating theoretical error of Kissinger equation
Kissinger equation is widely used to calculate the activation energy. However, since a number of assumptions and approximations are introduced in the derivation, the activation energy resolved by this method w...
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Article
Thermal decomposition properties of double-base propellant and ammonium perchlorate
The thermal decomposition properties and the heat of combustion (ΔH) of samples with different ammonium perchlorate (AP)/double base propellant (DB) mass ratios under argon atmosphere were studied by the thermogr...
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Article
Thermal decomposition properties of guanidine nitrate and basic cupric nitrate
Characterized with a large gas production and low combustion temperature, the guanidine nitrate (GN) gas-generating agents are studied and applied widely. The determination factors of thermal decomposition pro...
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Article
A comparative study of guided wave propagation in timber poles with isotropic and transversely isotropic material models
Guided wave (GW) has been used for many years in non-destructive testing (NDT). There are various ways to generate the guided wave, including impact or impulse either manually or using devices. Although the me...
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Article
Effect of MnC2O4 nanoparticles on the thermal decomposition of TEGDN/NC propellant
The effect of MnC2O4 nanoparticles on the thermal decomposition of double-base propellant composed of nitrocellulose (NC) and triethylene glycol dinitrate (TEGDN) has been investigated by TG/DSC–MS–FTIR coupling ...
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Article
Supplement on applicability of the Kissinger equation in thermal analysis
The relative errors (e%) in the determination of the activation energy from the slope of the Kissinger straight line ln(β/βT p 2 ) vs. ...
