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  11. Behaviour Of Knitted Materials In A Vibrating Environment

Behaviour of Knitted Materials in a Vibrating Environment

Mirela Blaga1, Neculai Eugen Seghedin2, Mihăiță Horodincă2

  • 1Faculty of Industrial Design and Business Management, "Gheorghe Asachi" Technical University of Iasi, 700050 Iasi, Romania.

Materials (Basel, Switzerland)
|February 13, 2025

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View abstract on PubMed

Summary
This summary is machine-generated.

Spacer knitted fabrics can reduce vibration transmission. Cotton yarns (Nm 1/50) demonstrated superior shock absorption and damping, making them ideal for anti-vibration protective materials in industrial settings.

Area of Science:

  • Materials Science
  • Textile Engineering
  • Vibration Engineering

Background:

  • Industrial activities and tools generate vibrations that can cause human injuries.
  • Knitted materials show potential for shock absorption in anti-vibration equipment.
  • Limited research exists on natural yarns in spacer fabrics for vibration-prone environments.

Purpose of the Study:

  • To investigate the vibration absorption properties of spacer knitted fabrics with natural yarns.
  • To determine the influence of material properties on natural frequencies and vibration transmissibility.
  • To identify optimal fabric compositions for protective anti-vibration applications.

Main Methods:

  • Fabric samples: Six spacer knitted fabrics with cotton or cashmere outer layers and PES monofilament connectors.
Keywords:
natural frequenciesvibration transmissibilityweft-knitted spacer fabrics

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  • Natural frequency measurement: Free vibration method.
  • Vibration transmissibility simulation: One-degree-of-freedom vibration system.

    • Main Results:

    • Natural frequencies are influenced by experimental direction, yarn count, stitch density, and material thickness.
    • Cotton yarns (Nm 1/50) exhibited the highest damping capacity and specific damping coefficient.
    • Fabrics with cotton yarns (Nm 1/50) showed the lowest vibration transmission.

    Conclusions:

    • Spacer knitted fabrics, particularly those with cotton yarns (Nm 1/50), are effective in reducing vibration transmission.
    • Understanding natural frequencies is crucial for preventing resonance in anti-vibration materials.
    • These findings recommend specific knitted fabric structures for developing effective protective materials against industrial vibrations.