Damage detection in pipes based on acoustic excitations using laser-induced plasma

Itsuro Kajiwara, Ryosuke Akita, Naoki Hosoya

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

A health-monitoring system is proposed to detect holes drilled in a pipe based on laser plasma acoustic excitations and acoustic measurements. In this system, an acoustic excitation is applied to a pipe via a laser-induced plasma in air generated by a high-power Nd: YAG pulse laser. Laser-induced plasmas can realize non-contact acoustic impulse excitations. A microphone is used to measure the time response of the acoustic pressure. In this study, we focus on the detection of a hole in the pipe. The reflection of the acoustic wave due to a hole drilled in the pipe induces a change in the time response of the acoustic pressure. Applying a continuous wavelet transform to the measured time response data with/without the hole can locate the position of the hole. This study demonstrates the effectiveness of the present damage detection method based on an acoustic excitation using a laser-induced plasma.

Original languageEnglish
Pages (from-to)570-579
Number of pages10
JournalMechanical Systems and Signal Processing
Volume111
DOIs
Publication statusPublished - 2018 Oct 1

Fingerprint

Laser excitation
Damage detection
Acoustics
Pipe
Plasmas
Lasers
Microphones
Wavelet transforms
Laser pulses
Health
Acoustic waves
Monitoring
Air

Keywords

  • Acoustic excitation
  • Damage detection
  • Health monitoring
  • Laser-induced plasma
  • Wavelet transform

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Signal Processing
  • Civil and Structural Engineering
  • Aerospace Engineering
  • Mechanical Engineering
  • Computer Science Applications

Cite this

Damage detection in pipes based on acoustic excitations using laser-induced plasma. / Kajiwara, Itsuro; Akita, Ryosuke; Hosoya, Naoki.

In: Mechanical Systems and Signal Processing, Vol. 111, 01.10.2018, p. 570-579.

Research output: Contribution to journalArticle

@article{1ee752460e6941e288584a50e074764d,
title = "Damage detection in pipes based on acoustic excitations using laser-induced plasma",
abstract = "A health-monitoring system is proposed to detect holes drilled in a pipe based on laser plasma acoustic excitations and acoustic measurements. In this system, an acoustic excitation is applied to a pipe via a laser-induced plasma in air generated by a high-power Nd: YAG pulse laser. Laser-induced plasmas can realize non-contact acoustic impulse excitations. A microphone is used to measure the time response of the acoustic pressure. In this study, we focus on the detection of a hole in the pipe. The reflection of the acoustic wave due to a hole drilled in the pipe induces a change in the time response of the acoustic pressure. Applying a continuous wavelet transform to the measured time response data with/without the hole can locate the position of the hole. This study demonstrates the effectiveness of the present damage detection method based on an acoustic excitation using a laser-induced plasma.",
keywords = "Acoustic excitation, Damage detection, Health monitoring, Laser-induced plasma, Wavelet transform",
author = "Itsuro Kajiwara and Ryosuke Akita and Naoki Hosoya",
year = "2018",
month = "10",
day = "1",
doi = "10.1016/j.ymssp.2018.04.004",
language = "English",
volume = "111",
pages = "570--579",
journal = "Mechanical Systems and Signal Processing",
issn = "0888-3270",
publisher = "Academic Press Inc.",

}

TY - JOUR

T1 - Damage detection in pipes based on acoustic excitations using laser-induced plasma

AU - Kajiwara, Itsuro

AU - Akita, Ryosuke

AU - Hosoya, Naoki

PY - 2018/10/1

Y1 - 2018/10/1

N2 - A health-monitoring system is proposed to detect holes drilled in a pipe based on laser plasma acoustic excitations and acoustic measurements. In this system, an acoustic excitation is applied to a pipe via a laser-induced plasma in air generated by a high-power Nd: YAG pulse laser. Laser-induced plasmas can realize non-contact acoustic impulse excitations. A microphone is used to measure the time response of the acoustic pressure. In this study, we focus on the detection of a hole in the pipe. The reflection of the acoustic wave due to a hole drilled in the pipe induces a change in the time response of the acoustic pressure. Applying a continuous wavelet transform to the measured time response data with/without the hole can locate the position of the hole. This study demonstrates the effectiveness of the present damage detection method based on an acoustic excitation using a laser-induced plasma.

AB - A health-monitoring system is proposed to detect holes drilled in a pipe based on laser plasma acoustic excitations and acoustic measurements. In this system, an acoustic excitation is applied to a pipe via a laser-induced plasma in air generated by a high-power Nd: YAG pulse laser. Laser-induced plasmas can realize non-contact acoustic impulse excitations. A microphone is used to measure the time response of the acoustic pressure. In this study, we focus on the detection of a hole in the pipe. The reflection of the acoustic wave due to a hole drilled in the pipe induces a change in the time response of the acoustic pressure. Applying a continuous wavelet transform to the measured time response data with/without the hole can locate the position of the hole. This study demonstrates the effectiveness of the present damage detection method based on an acoustic excitation using a laser-induced plasma.

KW - Acoustic excitation

KW - Damage detection

KW - Health monitoring

KW - Laser-induced plasma

KW - Wavelet transform

UR - http://www.scopus.com/inward/record.url?scp=85045699357&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85045699357&partnerID=8YFLogxK

U2 - 10.1016/j.ymssp.2018.04.004

DO - 10.1016/j.ymssp.2018.04.004

M3 - Article

VL - 111

SP - 570

EP - 579

JO - Mechanical Systems and Signal Processing

JF - Mechanical Systems and Signal Processing

SN - 0888-3270

ER -