Experimental evaluation of the true intrinsic nonlinearity of rail steel using Rayleigh waves and a new nonlinearity parameter

Research output: Chapters, Conference Papers, Creative and Literary Works (RGC: 12, 32, 41, 45)32_Refereed conference paper (with ISBN/ISSN)peer-review

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Detail(s)

Original languageEnglish
Title of host publicationHealth Monitoring of Structural and Biological Systems IX
EditorsPaul Fromme, Zhongqing Su
PublisherSPIE
Number of pages12
Volume11381
ISBN (Electronic)9781510635401
ISBN (Print)9781510635395
Publication statusPublished - Apr 2020

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume11381
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

TitleSPIE Smart Structures + Nondestructive Evaluation - New Digital Forum
LocationOnline Only
PlaceUnited States
CityCalifornia
Period27 April - 8 May 2020

Abstract

The paper presents the experimental evaluation of the intrinsic nonlinearity of macroscopically pristine rail specimens using Rayleigh waves. A second harmonic is produced in the wave as a result of lattice-anharmonicity of Rail. The spectral amplitudes of the fundamental and generated second harmonics are then used to calculate the intrinsic nonlinearity of rail using a new amplitude-based nonlinearity parameter. The material nonlinearity of the rail steel evaluated using the experimental measurements and amplitude-based parameter are further compared with the nonlinear elasticity equations. The close agreement of the results shows the effectiveness of the proposed method in measuring the intrinsic nonlinearity of the rail steel.

Research Area(s)

  • Rayleigh waves, material nonlinearity, lattice anharmonicity, Rail, nonlinearity parameter

Bibliographic Note

Research Unit(s) information for this publication is provided by the author(s) concerned.

Citation Format(s)

Experimental evaluation of the true intrinsic nonlinearity of rail steel using Rayleigh waves and a new nonlinearity parameter. / Masurkar, Faeez; Tse, Peter.

Health Monitoring of Structural and Biological Systems IX. ed. / Paul Fromme; Zhongqing Su. Vol. 11381 SPIE, 2020. 113811N (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 11381).

Research output: Chapters, Conference Papers, Creative and Literary Works (RGC: 12, 32, 41, 45)32_Refereed conference paper (with ISBN/ISSN)peer-review