Axial Compression Behavior of Aluminum (Al), Glass/Epoxy (GFRP) and Hybrid Al-GFRP Crash-box: An Experimental and Digital Image Correlation Approach

Open Access

Year : 2024 | Volume : | : | Page : –
By

    Varsha M.P.

  1. Mahesh

  2. Prashant Rawat

  1. , Department of Mechanical Engineering, National Institute of Technology, Tiruchirappalli, Tamil Nadu, India
  2. , Department of Aerospace Engineering, Indian Institute of Technology Madras, Chennai, Tamil Nadu, India
  3. Assistant Professor, Department of Aerospace Engineering, Indian Institute of Technology Madras, Chennai, Tamil Nadu, India

Abstract

The study aims to understand the axial compression characteristics and fracture of cylindrical Aluminum (Al), Glass/epoxy (GFRP) composite and Hybrid Al-GFRP crash-boxes. The hollow Al tubes are fabricated by rolling and bonding a thin aluminum sheet followed by rivet joints. The GFRP samples are manufactured using the wet-hand layup technique followed by the vacuum bagging method. Hybrid samples are manufactured by covering GFRP tubes with aluminum sheets on the outer and inner sides bonded by commercial Araldite®. The prepared samples are axially compressed in a universal testing machine (UTM). The strain field study by the Digital Image Correlation (DIC) technique is performed to identify the possibility of fracture modes in the prepared crash boxes. The continuous damage progression is measured using acoustic sound signatures. It is observed from the experimental results that the Al-GFRP samples showed the highest load carrying capacity. The GFRP composites showed the highest specific energy absorption (SEA) and a relatively stable axial crushing phenomenon. The comparative results proved that DIC and acoustic analysis can accurately identify the fracture in hollow crash-boxes (without physical contact and causing damage in the samples) during the experiments.

Keywords: Axial compression; GFRP; Hybrid crash-box; Crashworthiness; Failure Modes, DIC; Acoustic analysis; Non-contact fracture analysis

How to cite this article: Varsha M.P., Mahesh, Prashant Rawat.Axial Compression Behavior of Aluminum (Al), Glass/Epoxy (GFRP) and Hybrid Al-GFRP Crash-box: An Experimental and Digital Image Correlation Approach.Journal of Polymer and Composites.2024; ():-.
How to cite this URL: Varsha M.P., Mahesh, Prashant Rawat , Axial Compression Behavior of Aluminum (Al), Glass/Epoxy (GFRP) and Hybrid Al-GFRP Crash-box: An Experimental and Digital Image Correlation Approach jopc 2024 {cited 2024 Apr 24};:-. Available from: https://journals.stmjournals.com/jopc/article=2024/view=144260

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Ahead of Print Open Access Original Research
Volume
Received January 6, 2024
Accepted March 23, 2024
Published April 24, 2024
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