Characterization of wedge waves propagating along wedge tips with defects

Ming I. Chen; Seng Po Tesng; Pei Yuan Lo; Che Hua Yang

doi:10.1016/j.ultras.2017.09.010

Characterization of wedge waves propagating along wedge tips with defects

Ming I. Chen, Seng Po Tesng, Pei Yuan Lo, Che Hua Yang^*

^*Corresponding author for this work

National Taipei University of Technology

Research output: Contribution to journal › Journal Article › peer-review

15 Scopus citations

Abstract

Wedge waves are guided acoustic waves propagating along the tip of a wedge with the energy tightly confined near the wedge. Anti-symmetric flexural (ASF) modes are wedge waves with their particle motion anti-symmetric with the apex mid-plane. This study investigates the behaviors of ASF modes propagation along wedge tips with perfect and imperfect rectangular defects. Numerical finite element simulations and experimental measurements using a laser ultrasound technique are employed to explore the behaviors of ASF modes interacting with defects. Complex reflections and transmissions involved with direct reflections and transmissions as well as the newly discovered mode conversions will be explored and quantified in numerical as well as experimental ways.

Original language	English
Pages (from-to)	289-297
Number of pages	9
Journal	Ultrasonics
Volume	82
DOIs	https://doi.org/10.1016/j.ultras.2017.09.010
State	Published - 01 2018
Externally published	Yes

Bibliographical note

Publisher Copyright:
© 2017 Elsevier B.V.

Keywords

ASF mode
Defect
Finite element
Laser ultrasound technique
Mode conversion
Wedge wave

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10.1016/j.ultras.2017.09.010

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title = "Characterization of wedge waves propagating along wedge tips with defects",

abstract = "Wedge waves are guided acoustic waves propagating along the tip of a wedge with the energy tightly confined near the wedge. Anti-symmetric flexural (ASF) modes are wedge waves with their particle motion anti-symmetric with the apex mid-plane. This study investigates the behaviors of ASF modes propagation along wedge tips with perfect and imperfect rectangular defects. Numerical finite element simulations and experimental measurements using a laser ultrasound technique are employed to explore the behaviors of ASF modes interacting with defects. Complex reflections and transmissions involved with direct reflections and transmissions as well as the newly discovered mode conversions will be explored and quantified in numerical as well as experimental ways.",

keywords = "ASF mode, Defect, Finite element, Laser ultrasound technique, Mode conversion, Wedge wave",

author = "Chen, {Ming I.} and Tesng, {Seng Po} and Lo, {Pei Yuan} and Yang, {Che Hua}",

note = "Publisher Copyright: {\textcopyright} 2017 Elsevier B.V.",

year = "2018",

month = jan,

doi = "10.1016/j.ultras.2017.09.010",

language = "英语",

volume = "82",

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T1 - Characterization of wedge waves propagating along wedge tips with defects

AU - Chen, Ming I.

AU - Tesng, Seng Po

AU - Lo, Pei Yuan

AU - Yang, Che Hua

PY - 2018/1

Y1 - 2018/1

N2 - Wedge waves are guided acoustic waves propagating along the tip of a wedge with the energy tightly confined near the wedge. Anti-symmetric flexural (ASF) modes are wedge waves with their particle motion anti-symmetric with the apex mid-plane. This study investigates the behaviors of ASF modes propagation along wedge tips with perfect and imperfect rectangular defects. Numerical finite element simulations and experimental measurements using a laser ultrasound technique are employed to explore the behaviors of ASF modes interacting with defects. Complex reflections and transmissions involved with direct reflections and transmissions as well as the newly discovered mode conversions will be explored and quantified in numerical as well as experimental ways.

AB - Wedge waves are guided acoustic waves propagating along the tip of a wedge with the energy tightly confined near the wedge. Anti-symmetric flexural (ASF) modes are wedge waves with their particle motion anti-symmetric with the apex mid-plane. This study investigates the behaviors of ASF modes propagation along wedge tips with perfect and imperfect rectangular defects. Numerical finite element simulations and experimental measurements using a laser ultrasound technique are employed to explore the behaviors of ASF modes interacting with defects. Complex reflections and transmissions involved with direct reflections and transmissions as well as the newly discovered mode conversions will be explored and quantified in numerical as well as experimental ways.

KW - ASF mode

KW - Defect

KW - Finite element

KW - Laser ultrasound technique

KW - Mode conversion

KW - Wedge wave

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U2 - 10.1016/j.ultras.2017.09.010

DO - 10.1016/j.ultras.2017.09.010

M3 - 文章

C2 - 28938162

AN - SCOPUS:85029506595

SN - 0041-624X

VL - 82

SP - 289

EP - 297

JO - Ultrasonics

JF - Ultrasonics

ER -

Characterization of wedge waves propagating along wedge tips with defects

Abstract

Bibliographical note

Keywords

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