Health Monitoring and Diagnosis of Solid Rocket Motors with Bore Cracks

Abstract

A finite-element-based computational model is used to investigate the effects of bore cracking on the changes in stress distributions along the bondline of solid rocket motors at various storage temperatures. Capabilities of a rocket motor health monitoring system are assessed based on the assumption that the proposed stress sensors are evenly distributed along the circumference of the inside of the motor case. A quantitative relationship is obtained between the crack depth and the sensor data to inversely estimate the size of bore cracks in the motor. It is shown that the proposed type of sensing system can detect critical bore cracks in solid rocket motors

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Document Details

Document Type
Technical Report
Publication Date
Nov 01, 2015
Accession Number
AD1001072

Entities

People

  • Anhduong Q. Le
  • L. Z. Sun
  • Timothy C. Miller

Organizations

  • Air Force Research Laboratory

Tags

Communities of Interest

  • Sensors
  • Weapons Technologies

DTIC Thesaurus Topics

  • Accuracy
  • Air Force
  • Air Force Research Laboratories
  • Composite Propellants
  • Damage Detection
  • Failure Mode And Effect Analysis
  • Hydroxyl Terminated Polybutadiene
  • Materials Laboratories
  • Mechanical Properties
  • Mechanics
  • Monitoring
  • Propellants
  • Radial Stress
  • Rocket Engines
  • Rockets
  • Stresses
  • Structural Health Monitoring

Fields of Study

  • Engineering

Readers

  • Rocket Propulsion.
  • Structural Health Monitoring of Composite Structures.
  • ballistics.