Fatigue Life and Dynamic Response of SMA Actuators

Abstract

The major objective of this project was to study the fatigue life and dynamic response of Shape Memory Alloy (SMA) actuators. The investigation involved an array tests for both complete and partial transformation under different constant load levels. A microstructural evaluation of failure mechanisms was also performed. In order to understand the dynamic response of SMAs, the project was subdivided into two main thrusts: modeling and experimentation of SMA devices for vibration isolation in space applications and modeling and experimentation of SMAs in shock absorption devices. Major accomplishments of this project are summarized as follows: - Development of two models for analysis of SMAs based dynamic systems - Development of a computationally efficient simulation tool for parametric analysis. Capability includes - Isothermal, non isothermal conditions

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Document Details

Document Type
Technical Report
Publication Date
Sep 30, 2004
Accession Number
ADA433226

Entities

People

  • Dimitris C Lagoudas

Organizations

  • Texas A&M University

Tags

Communities of Interest

  • Space

DTIC Thesaurus Topics

  • Absorption
  • Actuators
  • Air Force Research Laboratories
  • Alloys
  • Dynamic Response
  • Engineering
  • Failure Mode And Effect Analysis
  • Fatigue Life
  • Materials
  • Mechanical Engineering
  • Mechanics
  • Parametric Analysis
  • Phase Transformations
  • Shape Memory Alloys
  • Simulations
  • Vibration
  • Waves

Fields of Study

  • Engineering

Readers

  • Materials Science (Mechanical Engineering).
  • Robotics and Automation.
  • Technical Research and Report Writing.

Technology Areas

  • Space