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Modelling and experimental validation of Textile Pockets based active inflatable device.

A Mehmood1, M Basset2, R Orjuela2

  • 1MIPS Laboratory (EA 3223), University of Haute-Alsace, 12 rue des frères lumière F-68093 Mulhouse, France; COMSATS Institute of Information Technology, Park road Islamabad, Pakistan.

ISA Transactions
|September 10, 2014
PubMed
Summary

This study presents a mathematical model for an active inflatable device using textile pockets, offering a flexible alternative to traditional airbags. The model accurately predicts pressure dynamics for various inflatable textile pocket designs.

Keywords:
Electro-pneumatic pressure converterInflatable Textile Pocket (ITP)Modelling

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Area of Science:

  • Materials Science
  • Mechanical Engineering
  • Textile Engineering

Background:

  • Classical airbags often use stretchable polymers.
  • Inflatable Textile Pockets (ITPs) offer superior mechanical properties and automated production via Jacquard knitting.
  • ITPs present a viable alternative to conventional airbag materials.

Purpose of the Study:

  • To develop a generalized and flexible mathematical model for an active inflatable device.
  • To accurately simulate the pressure dynamics within Inflatable Textile Pockets (ITPs).
  • To enable easy adaptation of the model for ITPs of diverse shapes.

Main Methods:

  • A combined sub-model approach was used, integrating components like a compressor, Electro-pneumatic Pressure Converter (EPC), and ITP.
  • Mathematical modeling focused on pressure dynamics, considering airflow rate, ITP volume variation, and pneumatic line length.
  • Model parameters were determined using system identification techniques.

Main Results:

  • The developed mathematical model effectively captures the behavior of the active inflatable device.
  • The model's flexibility allows for the incorporation of various ITP geometries.
  • Experimental validation using a servo-hydraulic fatigue testing machine confirmed the model's effectiveness.

Conclusions:

  • The proposed mathematical model provides a robust framework for analyzing active inflatable devices utilizing ITPs.
  • The Jacquard knitting technique enables versatile and mold-free production of ITPs.
  • This research advances the development of advanced inflatable systems with improved material alternatives.