Non-contact acoustic tests based on nanosecond laser ablation: Generation of a pulse sound source with a small amplitude

Naoki Hosoya, Itsuro Kajiwara, Tatsuo Inoue, Koh Umenai

研究成果: Article

16 引用 (Scopus)

抄録

A method to generate a pulse sound source for acoustic tests based on nanosecond laser ablation with a plasma plume is discussed. Irradiating a solid surface with a laser beam expands a high-temperature plasma plume composed of free electrons, ionized atoms, etc. at a high velocity throughout ambient air. The shockwave generated by the plasma plume becomes the pulse sound source. A laser ablation sound source has two features. Because laser ablation is induced when the laser fluence reaches 1012-1014 W/m2, which is less than that for laser-induced breakdown (1015 W/m2), laser ablation can generate a lower sound pressure, and the sound source has a hemispherical radiation pattern on the surface where laser ablation is generated. Additionally, another feature is that laser-induced breakdown sound sources can fluctuate, whereas laser ablation sound sources do not because laser ablation is produced at a laser beam-irradiation point. We validate this laser ablation method for acoustic tests by comparing the measured and theoretical resonant frequencies of an impedance tube.

元の言語English
ページ(範囲)4254-4264
ページ数11
ジャーナルJournal of Sound and Vibration
333
発行部数18
DOI
出版物ステータスPublished - 2014 9 1

Fingerprint

Laser ablation
laser ablation
Laser pulses
Acoustics
Acoustic waves
acoustics
pulses
plumes
Plasmas
Laser beams
Lasers
breakdown
laser beams
lasers
Acoustic impedance
high temperature plasmas
sound pressure
solid surfaces
free electrons
resonant frequencies

ASJC Scopus subject areas

  • Acoustics and Ultrasonics
  • Condensed Matter Physics
  • Mechanical Engineering
  • Mechanics of Materials

これを引用

Non-contact acoustic tests based on nanosecond laser ablation : Generation of a pulse sound source with a small amplitude. / Hosoya, Naoki; Kajiwara, Itsuro; Inoue, Tatsuo; Umenai, Koh.

:: Journal of Sound and Vibration, 巻 333, 番号 18, 01.09.2014, p. 4254-4264.

研究成果: Article

@article{e38b5c19d38b4a22b8c5fbabcc6d2637,
title = "Non-contact acoustic tests based on nanosecond laser ablation: Generation of a pulse sound source with a small amplitude",
abstract = "A method to generate a pulse sound source for acoustic tests based on nanosecond laser ablation with a plasma plume is discussed. Irradiating a solid surface with a laser beam expands a high-temperature plasma plume composed of free electrons, ionized atoms, etc. at a high velocity throughout ambient air. The shockwave generated by the plasma plume becomes the pulse sound source. A laser ablation sound source has two features. Because laser ablation is induced when the laser fluence reaches 1012-1014 W/m2, which is less than that for laser-induced breakdown (1015 W/m2), laser ablation can generate a lower sound pressure, and the sound source has a hemispherical radiation pattern on the surface where laser ablation is generated. Additionally, another feature is that laser-induced breakdown sound sources can fluctuate, whereas laser ablation sound sources do not because laser ablation is produced at a laser beam-irradiation point. We validate this laser ablation method for acoustic tests by comparing the measured and theoretical resonant frequencies of an impedance tube.",
author = "Naoki Hosoya and Itsuro Kajiwara and Tatsuo Inoue and Koh Umenai",
year = "2014",
month = "9",
day = "1",
doi = "10.1016/j.jsv.2014.04.050",
language = "English",
volume = "333",
pages = "4254--4264",
journal = "Journal of Sound and Vibration",
issn = "0022-460X",
publisher = "Academic Press Inc.",
number = "18",

}

TY - JOUR

T1 - Non-contact acoustic tests based on nanosecond laser ablation

T2 - Generation of a pulse sound source with a small amplitude

AU - Hosoya, Naoki

AU - Kajiwara, Itsuro

AU - Inoue, Tatsuo

AU - Umenai, Koh

PY - 2014/9/1

Y1 - 2014/9/1

N2 - A method to generate a pulse sound source for acoustic tests based on nanosecond laser ablation with a plasma plume is discussed. Irradiating a solid surface with a laser beam expands a high-temperature plasma plume composed of free electrons, ionized atoms, etc. at a high velocity throughout ambient air. The shockwave generated by the plasma plume becomes the pulse sound source. A laser ablation sound source has two features. Because laser ablation is induced when the laser fluence reaches 1012-1014 W/m2, which is less than that for laser-induced breakdown (1015 W/m2), laser ablation can generate a lower sound pressure, and the sound source has a hemispherical radiation pattern on the surface where laser ablation is generated. Additionally, another feature is that laser-induced breakdown sound sources can fluctuate, whereas laser ablation sound sources do not because laser ablation is produced at a laser beam-irradiation point. We validate this laser ablation method for acoustic tests by comparing the measured and theoretical resonant frequencies of an impedance tube.

AB - A method to generate a pulse sound source for acoustic tests based on nanosecond laser ablation with a plasma plume is discussed. Irradiating a solid surface with a laser beam expands a high-temperature plasma plume composed of free electrons, ionized atoms, etc. at a high velocity throughout ambient air. The shockwave generated by the plasma plume becomes the pulse sound source. A laser ablation sound source has two features. Because laser ablation is induced when the laser fluence reaches 1012-1014 W/m2, which is less than that for laser-induced breakdown (1015 W/m2), laser ablation can generate a lower sound pressure, and the sound source has a hemispherical radiation pattern on the surface where laser ablation is generated. Additionally, another feature is that laser-induced breakdown sound sources can fluctuate, whereas laser ablation sound sources do not because laser ablation is produced at a laser beam-irradiation point. We validate this laser ablation method for acoustic tests by comparing the measured and theoretical resonant frequencies of an impedance tube.

UR - http://www.scopus.com/inward/record.url?scp=84920176543&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84920176543&partnerID=8YFLogxK

U2 - 10.1016/j.jsv.2014.04.050

DO - 10.1016/j.jsv.2014.04.050

M3 - Article

AN - SCOPUS:84920176543

VL - 333

SP - 4254

EP - 4264

JO - Journal of Sound and Vibration

JF - Journal of Sound and Vibration

SN - 0022-460X

IS - 18

ER -