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http://dx.doi.org/10.6108/KSPE.2015.19.6.026

Evaluation of Crack Resistance Properties on Particulate Reinforced Composite Propellant using Digital Image Correlation  

Na, Seonghyeon (School of Mechanical Design Engineering, Chungnam National University)
Choi, Hoonseok (School of Mechanical Design Engineering, Chungnam National University)
Oh, Kwangkeun (School of Mechanical Design Engineering, Chungnam National University)
Kim, Jaehoon (School of Mechanical Design Engineering, Chungnam National University)
Publication Information
Journal of the Korean Society of Propulsion Engineers / v.19, no.6, 2015 , pp. 26-32 More about this Journal
Abstract
In this study, it is evaluated for fracture toughness to analyze crack resistance properties of particulate reinforced composite propellant. Fracture toughness test using WST specimen is conducted by temperature conditions from $50^{\circ}C$ to $-60^{\circ}C$. Evaluation method for fracture toughness calculated using an equation suggested by ASTM E399 with linear elastic fracture mechanics. From these result, splitting loads and stress intensity factors of propellant increase according to decrease of test temperature. Also, the strain fields of specimen surface using digital image correlation increase as temperature decreased from $50^{\circ}C$ to $-40^{\circ}C$, but it sharply decreases at $-60^{\circ}C$ because of brittle behavior.
Keywords
Particulate Reinforced Composite Propellant; Viscoelasticity; Digital Image Correlation; Strain Field;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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