Excitation of thermal dissipation of solid propellants during the fatigue process

Tong, Xin; Chen, Xiong; Xu, Jie; Sun, Chaoxiang; Liang, Wei

doi:10.1016/j.matdes.2017.04.088

Cited by 20 publications

(4 citation statements)

References 29 publications

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“…The rise in the internal and surface temperatures was illustrated as quadratic functions of the strain amplitude (Figure 6). Results showed that under the same testing conditions the greater strain amplitude generates more heat, as reported by Tong et al 44 The difference between surface temperatures at point P1 and internal temperatures at the SRC sample center could be observed in Figures 5(a) and 6 (a). Results showed that the internal temperature of the SRC sample at the strain amplitude of 1% is slightly lower than the surface one.…”

Section: Effects Of Strain Amplitudes On the Src Self-heating And Dynamic Mechanical Behaviorsupporting

confidence: 75%

Self-heating and dynamic mechanical behavior of silicone rubber composite filled with carbonyl iron particles under cyclic compressive loading

Nam

Petríková

Marvalová

et al. 2021

Journal of Composite Materials

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Self-heating and dynamic mechanical behavior of isotropic silicone rubber composite (SRC) filled with micro-sized carbonyl iron particles (CIPs) subjected to cyclic compressive loading have been studied. Effects of pre-strains from 5 to 20%, strain amplitudes from 1 to 5%, and excitation frequencies from 10 to 50 Hz on the self-heating and dynamic mechanical response of the isotropic SRC were investigated. The self-heating temperatures were measured on the surface and at the center of cylindrical SRC specimens. The self-heating temperatures of the isotropic SRC samples showed a fast increase in an initial transient stage and the following isothermal stage. The temperature distribution in the isotropic SRC specimens was non-homogeneous and the temperature decreased from the center to sample edges. The self-heating temperatures of the isotropic SRC increased gradually with raising the strain amplitude and frequency. However, the difference between the internal and surface temperatures was slight for low strain amplitudes and frequencies, while it was significant for high strain amplitudes and frequencies. The temperatures of the isotropic SRC boosted rapidly with increasing the pre-strain to 10% and thereafter gained slightly. Although the isotropic SRC dynamic moduli reduced with the rise of the strain amplitude, they enhanced with increasing the pre-strain and frequency. Besides, the storage modulus of the isotropic SRC varied slightly with time, while the loss modulus reduced markedly especially at the initial period. The decrease in the loss modulus of the isotropic SRC under cyclic compressive loading is attributed to its self-heating temperature rise. A finite element simulation of the heat transfer in the SRC cylinder was conducted. The calculated temperatures in the SRC cylinder were in good agreement with the measured ones at different strain amplitudes and frequencies.

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Section: Effects Of Strain Amplitudes On the Src Self-heating And Dynamic Mechanical Behaviorsupporting

confidence: 75%

Self-heating and dynamic mechanical behavior of silicone rubber composite filled with carbonyl iron particles under cyclic compressive loading

Nam

Petríková

Marvalová

et al. 2021

Journal of Composite Materials

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“…According to a number of literatures, while polymers are subjected to mechanical loading, the energy dissipated caused self-heating phenomena [14]. Tong et al [15][16][17] studied the self-heating effect of HTPB propellant during fatigue and proposed a novel nonlinear viscoelastic constitutive model to describe the mechanical behavior under cyclic loading. Katunin et al [18,19] presented and discussed the phenomenological model of self-heating of a composite structure during air cooling.…”

Section: Introductionmentioning

confidence: 99%

Experimental study on self-heating phenomena of CMDB/HTPB propellant under intermediate strain rate compression load

Wang

Zhang

et al. 2023

J. Phys.: Conf. Ser.

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Self-heating behaviour of solid propellants under intermediate strain rate compressive loading have been studied. Effects of two intermediate strain rate (1 s-1 and 150 s-1) of the CMDB/HTPB propellants were investigated. The compression test was conducted using a hydraulic testing machine and the self-heating temperatures were measured by an infrared camera. The results show the following: (1) For CMDB propellant, the surface temperature of specimens rapidly increased at the initial period, then decreased due to the movement of the high temperature region caused by deformation, and then increased again. Finally, the surface temperature slowly decreased due to heat transfer to the surroundings. Infrared thermography showed the formation of a hot spot. Cracks were initiated and gradually expanded to the interior area during compression. (2) For HTPB propellant, the surface temperature of specimens increased slightly. Compared with CMDB specimens, there was no significant damage to HTPB specimens. (3) For both CMDB and HTPB propellants, the temperature distribution of specimens was non-homogeneous. At the centre of the specimen surface, the temperature is the highest. The self-heating temperatures of propellant increased with increasing the strain rate. However, the difference is slight for HTPB propellant, whereas it is considerable for CMDB propellant.

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“…En el campo de las aplicaciones mecánicas, (IRT) ha demostrado ser una herramienta importante, tanto para el diagnóstico de fallas como complemento a otras técnicas de detección de fallas, ideal en la evaluación de daños por fatiga en materiales (Tong et al, 2017). La termografía IR ha demostrado ser una técnica útil en una amplia variedad de aplicaciones.…”

Section: Introductionunclassified

Análisis termográfico de un motor de encendido provocado, inducido a fallas mediante la aplicación de diseño de experimentos (DoE)

et al. 2022

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La presente investigación tiene como objetivo realizar un análisis termográfico a un motor de encendido provocado, al inducirle fallas controladas no detectadas por el OBD II (Sistema de Diagnóstico a Bordo de Segunda Generación), mediante diseño de experimentos (DoE). Se aplica un diseño factorial completo de dos niveles y dos factores. La unidad experimental es un vehículo Hyundai Accent que se somete a ocho tratamientos en un banco dinamómetro. Los resultados muestran una variación de temperatura de 18.78 ℃ y NOx de 291 ppm al intervenir sobre la bujía, 18.98 ℃ y NOx de 20 ppm al incidir sobre el filtro de aire, y 55 ℃ y NOx de 25 ppm frente a un efecto combinado. Se concluye que la media cuadrática (RMS) de los datos presentes en una imagen térmica es la característica que mejor permite evaluar el efecto de los factores o fallas sobre el vehículo, al presentar un mejor ajuste y menor desviación estándar.

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Excitation of thermal dissipation of solid propellants during the fatigue process

Cited by 20 publications

References 29 publications

Self-heating and dynamic mechanical behavior of silicone rubber composite filled with carbonyl iron particles under cyclic compressive loading

Self-heating and dynamic mechanical behavior of silicone rubber composite filled with carbonyl iron particles under cyclic compressive loading

Experimental study on self-heating phenomena of CMDB/HTPB propellant under intermediate strain rate compression load

Análisis termográfico de un motor de encendido provocado, inducido a fallas mediante la aplicación de diseño de experimentos (DoE)

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