The application of smart materials in rotating systems as vibration attenuators is well-established due to their vibration reduction capabilities. One of the most common types of smart materials used is Shape Memory Alloys (SMA), which exhibit property changes in response to temperature (shape memory effect—SME) or mechanical stress (superelasticity—SE). The objective of this research is to compare and analyze the manufacturing of superelastic NiTi blade-type springs, considering different heat treatment methods, mechanical forming processes, and fabrication techniques (shape setting), with the aim of achieving a balance in properties. By optimizing these factors, it was possible to obtain a final austenitic temperature of 14.88 °C, an increased hysteresis damping of 78.44%, and a rupture strength of 1285.23 MPa. These results demonstrate the high potential of the springs in passive vibration reduction in rotating systems.

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Analysis of a NiTi Blade-Type Spring with Superelastic Effect According to Manufacturing Processes

  • Igor Jordan Guilherme de Sena,
  • Richard Senko,
  • Antônio Almeida Silva,
  • Vinicius da Silva Almeida

摘要

The application of smart materials in rotating systems as vibration attenuators is well-established due to their vibration reduction capabilities. One of the most common types of smart materials used is Shape Memory Alloys (SMA), which exhibit property changes in response to temperature (shape memory effect—SME) or mechanical stress (superelasticity—SE). The objective of this research is to compare and analyze the manufacturing of superelastic NiTi blade-type springs, considering different heat treatment methods, mechanical forming processes, and fabrication techniques (shape setting), with the aim of achieving a balance in properties. By optimizing these factors, it was possible to obtain a final austenitic temperature of 14.88 °C, an increased hysteresis damping of 78.44%, and a rupture strength of 1285.23 MPa. These results demonstrate the high potential of the springs in passive vibration reduction in rotating systems.