Characterising the transient frequency response of the low velocity impact on an aluminium panel

Research output: Contribution to journalArticle

Abstract

This paper presents the frequency response characteristics of aluminium 7075 panel under low velocity impact using Hilbert Huang Transform. The mechanical behaviour of most metal is strain-rate dependent and numerous engineering applications can fail the material due to high strain rate loading. Analysis in time-frequency domain could reveal the failure mechanism hidden at an impact occurance and the distribution of the low and high frequency, allowing the improvement to be made to avoid failure. The transient wave signal produced by the Split Hopkinson pressure bar is processed using Hilbert-Huang transform to characterize the mechanical behaviour of the material. The process starts with empirical mode decomposition technique and generating the Hilbert Spectrum using Hilbert Transform. The incident bar signal shows that high amplitude appeared from 0 to 0.2 ms at the frequency of around 5 to 10 Hz and the transmitter bar signal shows high amplitude appeared mostly at 1 to 10 Hz, from 0.1 ms and remained at the same amplitude until 1.6 ms. In the incident bar, compression wave propagates to transmitter bar through specimen, while the wave in transmitter bar, kept reflecting until it diminished. The knowledge in the frequency distribution is important in order to relate the impact signal and time, since the impact events happened in a few miliseconds.

Original languageEnglish
Pages (from-to)42-58
Number of pages17
JournalJournal of Mechanical Engineering
Volume15
Issue number1
Publication statusPublished - 1 Jun 2018

Fingerprint

Frequency response
Aluminum
Transmitters
Strain rate
Mathematical transformations
Compaction
Decomposition
Metals

Keywords

  • Frequency
  • Hilbert-Huang transform
  • Low velocity impact
  • Signal
  • Transient signal

ASJC Scopus subject areas

  • Mechanical Engineering

Cite this

@article{9112b63e036f46519f329238fa0e65b7,
title = "Characterising the transient frequency response of the low velocity impact on an aluminium panel",
abstract = "This paper presents the frequency response characteristics of aluminium 7075 panel under low velocity impact using Hilbert Huang Transform. The mechanical behaviour of most metal is strain-rate dependent and numerous engineering applications can fail the material due to high strain rate loading. Analysis in time-frequency domain could reveal the failure mechanism hidden at an impact occurance and the distribution of the low and high frequency, allowing the improvement to be made to avoid failure. The transient wave signal produced by the Split Hopkinson pressure bar is processed using Hilbert-Huang transform to characterize the mechanical behaviour of the material. The process starts with empirical mode decomposition technique and generating the Hilbert Spectrum using Hilbert Transform. The incident bar signal shows that high amplitude appeared from 0 to 0.2 ms at the frequency of around 5 to 10 Hz and the transmitter bar signal shows high amplitude appeared mostly at 1 to 10 Hz, from 0.1 ms and remained at the same amplitude until 1.6 ms. In the incident bar, compression wave propagates to transmitter bar through specimen, while the wave in transmitter bar, kept reflecting until it diminished. The knowledge in the frequency distribution is important in order to relate the impact signal and time, since the impact events happened in a few miliseconds.",
keywords = "Frequency, Hilbert-Huang transform, Low velocity impact, Signal, Transient signal",
author = "Mazlan, {N. H.} and Shahrir Abdullah and Zainuddin Sajuri and Omar, {Mohd. Zaidi} and {W. Zamri}, {Wan Fathul Hakim} and Abdullah, {M. F.}",
year = "2018",
month = "6",
day = "1",
language = "English",
volume = "15",
pages = "42--58",
journal = "Journal of Mechanical Engineering",
issn = "1823-5514",
publisher = "Institut Pengurusan Penyelidikan (RMI), Universiti Teknologi MARA",
number = "1",

}

TY - JOUR

T1 - Characterising the transient frequency response of the low velocity impact on an aluminium panel

AU - Mazlan, N. H.

AU - Abdullah, Shahrir

AU - Sajuri, Zainuddin

AU - Omar, Mohd. Zaidi

AU - W. Zamri, Wan Fathul Hakim

AU - Abdullah, M. F.

PY - 2018/6/1

Y1 - 2018/6/1

N2 - This paper presents the frequency response characteristics of aluminium 7075 panel under low velocity impact using Hilbert Huang Transform. The mechanical behaviour of most metal is strain-rate dependent and numerous engineering applications can fail the material due to high strain rate loading. Analysis in time-frequency domain could reveal the failure mechanism hidden at an impact occurance and the distribution of the low and high frequency, allowing the improvement to be made to avoid failure. The transient wave signal produced by the Split Hopkinson pressure bar is processed using Hilbert-Huang transform to characterize the mechanical behaviour of the material. The process starts with empirical mode decomposition technique and generating the Hilbert Spectrum using Hilbert Transform. The incident bar signal shows that high amplitude appeared from 0 to 0.2 ms at the frequency of around 5 to 10 Hz and the transmitter bar signal shows high amplitude appeared mostly at 1 to 10 Hz, from 0.1 ms and remained at the same amplitude until 1.6 ms. In the incident bar, compression wave propagates to transmitter bar through specimen, while the wave in transmitter bar, kept reflecting until it diminished. The knowledge in the frequency distribution is important in order to relate the impact signal and time, since the impact events happened in a few miliseconds.

AB - This paper presents the frequency response characteristics of aluminium 7075 panel under low velocity impact using Hilbert Huang Transform. The mechanical behaviour of most metal is strain-rate dependent and numerous engineering applications can fail the material due to high strain rate loading. Analysis in time-frequency domain could reveal the failure mechanism hidden at an impact occurance and the distribution of the low and high frequency, allowing the improvement to be made to avoid failure. The transient wave signal produced by the Split Hopkinson pressure bar is processed using Hilbert-Huang transform to characterize the mechanical behaviour of the material. The process starts with empirical mode decomposition technique and generating the Hilbert Spectrum using Hilbert Transform. The incident bar signal shows that high amplitude appeared from 0 to 0.2 ms at the frequency of around 5 to 10 Hz and the transmitter bar signal shows high amplitude appeared mostly at 1 to 10 Hz, from 0.1 ms and remained at the same amplitude until 1.6 ms. In the incident bar, compression wave propagates to transmitter bar through specimen, while the wave in transmitter bar, kept reflecting until it diminished. The knowledge in the frequency distribution is important in order to relate the impact signal and time, since the impact events happened in a few miliseconds.

KW - Frequency

KW - Hilbert-Huang transform

KW - Low velocity impact

KW - Signal

KW - Transient signal

UR - http://www.scopus.com/inward/record.url?scp=85047760000&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85047760000&partnerID=8YFLogxK

M3 - Article

VL - 15

SP - 42

EP - 58

JO - Journal of Mechanical Engineering

JF - Journal of Mechanical Engineering

SN - 1823-5514

IS - 1

ER -