Variation of Fracture Characteristics of Hydroxyl-Terminated Polybutadiene (HTPB)-Based Solid Propellants Under Thermal Aging

Hyun Soo Park, Il Hyun Kim, Byoung Ho Choi

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

This study was conducted to investigate the variation of the fracture toughness of hydroxyl-terminated polybutadiene (HTPB) solid propellant. Joint Army Navy NASA Air Force standard tensile tests and essential work of fracture (EWF) tests were carried out using test specimens stored at 20℃and 50℃. In this study, the EWF test results demonstrated that the fracture toughness and crack propagation resistance under plane stress state could be varied due to thermal degradation. The change in key mechanical properties caused by thermal degradation was also examined by the tensile test. The mechanical and fracture properties of the HTPB solid propellant decreased depending on the storage period of the solid propellant. The stability and reliability of the solid propellant were greatly affected by thermal degradation; thus, it is important to monitor the degree of thermal degradation of HTPB solid propellant to ensure proper performance.

Original languageEnglish
Pages (from-to)477-484
Number of pages8
JournalTransactions of the Korean Society of Mechanical Engineers, A
Volume42
Issue number5
DOIs
Publication statusPublished - 2018

Bibliographical note

Publisher Copyright:
© 2018 The Korean Society of Mechanical Engineers.

Keywords

  • Degradation
  • EWF Test
  • Fracture Toughness
  • HTPB(Hydroxyl-terminated Polybutadiene)
  • Solid Propellant
  • Tensile Test
  • Thermal Aging

ASJC Scopus subject areas

  • Mechanical Engineering

Fingerprint

Dive into the research topics of 'Variation of Fracture Characteristics of Hydroxyl-Terminated Polybutadiene (HTPB)-Based Solid Propellants Under Thermal Aging'. Together they form a unique fingerprint.

Cite this