Acoustic evaluation of damage characteristics in a composite solid propellant

Liu, C. T.

doi:10.2514/3.11514

Cited by 5 publications

(2 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…used acoustic emission technology to test the uniaxial tensile process of HTPB after temperature impact (alternating ambient temperature), and found that the time when the damage threshold occurred was earlier. From this, it was inferred that the propellant after temperature impact was more prone to initial damage under external load, and derived the linear relationship between the cumulative energy of acoustic emission of propellant and crack growth [37]. Chang et al.…”

Section: Macro Scale Dewetting Experiments and Analysis Methodsmentioning

confidence: 99%

Review on the Dewetting of the Particle‐Matrix Interface in Composite Solid Propellants

Zou

LI³

et al. 2023

Propellants Explo Pyrotec

View full text Add to dashboard Cite

Dewetting is the main damage mode of composite solid propellants, and the research on the initiation mechanism and evolution process of dewetting damage is an important way to predict the mechanical properties and evaluate the life of propellants. In this paper, the experimental research and analytical methods of dewettingare reviewed at domestic and foreign from three dimensions: macro, meso and micro. On this basis, the reference solutions to the existing research problems are proposed, and the key research directions of interface dewetting in the future are pointed out. The analysis shows that the dewetting behavior of composite solid propellant is affected by multiple factors such as internal factors (par-ticles, matrix, bonding agent) and external factors (temperature and humidity, aging, strain rate, confining pressure). At present, the mechanism of dewetting is not clear, so it is urgent to conduct experimental analysis and numerical simulation research on the interface at the micro level to analyze the physical and chemical properties of the interface. On the meso scale, it is necessary to increase research in the dewetting theoretical model considering multi factor coupling, the mechanical property experiment of particlematrix interface, and the fine construction of meso scale simulation model. On the macro scale, the dynamic analysis method of propellant dewetting under multiple complex loading conditions will be the focus of future research.

show abstract

Section: Macro Scale Dewetting Experiments and Analysis Methodsmentioning

confidence: 99%

Review on the Dewetting of the Particle‐Matrix Interface in Composite Solid Propellants

Zou

LI³

et al. 2023

Propellants Explo Pyrotec

View full text Add to dashboard Cite

show abstract

“…For highly filled elastomeric materials containing 200 mm particles the damage characteristics on the mesoscale were investigated, using nondestructive testing techniques [5][6][7][8][9]. The importance of these studies stems from the fact that damage on the mesoscale can significantly affect the macro constitutive and crack growth behavior in these materials.…”

Section: Introductionmentioning

confidence: 99%

Monitoring Microstructural Evolution, Crack Formation, and Damage Characteristics near Crack Tip in a Highly Filled Elastomer-Using Digital Radiography X-ray Techniques

Liu

2006

Exp Mech

Self Cite

View full text Add to dashboard Cite

In this study, the change of microstructure, the formation of cracks, and the change of damage characteristics near the tip of a propagating crack in a highly filled elastomer containing hard particles embedded in a rubbery matrix were investigated using digital radiography X-ray techniques. Experimental findings reveal that the degree of inhomogeneity of the material's microstructure and the number of nonpropagating cracks increase as the applied strain is increased. Also, the damage characteristics near the crack tip are highly dependent on the loading history.

show abstract