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Frequency related localisation of harmonic elastic waves in stratified welds

Frequency related localisation of harmonic elastic waves in stratified welds
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摘要 The paper presents a computational model for elastic waves in a structured weld adjacent to the free surface of an elastic solid. The main emphasis is on the interaction of waves with the micro-structure of the weld. Effects of localisation and channeling of waves are addressed. A model of a grain structure within the weld is also considered. The paper presents a computational model for elastic waves in a structured weld adjacent to the free surface of an elastic solid. The main emphasis is on the interaction of waves with the micro-structure of the weld. Effects of localisation and channeling of waves are addressed. A model of a grain structure within the weld is also considered.
作者 D.J.Colquitt A.B.Movchan I.S.Jones W.Daniels
机构地区 Department of Mathematical Sciences School of Engineering Serco Assurance Walton House
出处 《Acta Mechanica Sinica》 SCIE EI CAS CSCD 2010年第4期567-572,共6页 力学学报（英文版）
基金 supported by a scholarship funded by Serco Technical Assurance Services
关键词 Macro-structured welds Waves in stratified media Dispersion Localisation Macro-structured welds Waves in stratified media Dispersion Localisation
分类号 TG407 [金属学及工艺—焊接]
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参考文献9

  • 1Ogilvy, J.A.: Ultrasonic beam profiles and beam propagation in an austenitic weld using a theoretical ray tracing model. Ultrasonics 24(6), 337-347 (1986).
  • 2Norris, A.N.: A theory of pulse-propagation in anisotropic elastic solids. Wave Motion 9(6), 509-532 (1987).
  • 3Abrahams, I.R., Wickham, G.R.: The propagation of elastic-waves in a certain class of inhomogeneous anisotropic materials. 1. The refraction of a horizontally polarized shear-wave source. Proc. R. Soc. Lond. Ser. A: Math. Phys. Eng. Sci. 436(1898), 449478 (1992).
  • 4Abrahams, I.D., Wickhaml G.R.: The refraction of ultrasound in grainy and inhomogeneous fibre reinforced materials. Proc. Inst. Acoust. 13(2), 125-135 (1991).
  • 5Norris, A.N., Wickham, G.R.: Elastic waves in inhomogeneously oriented anisotropic materials. Wave Motion 33(1), 97-107 (2001).
  • 6Jones, I.S., Movchan, A.B.: Bloch-Floquet waves and controlled stop bands in periodic thermo-elastic structures. Waves Random Complex Media 17(4), 429-438 (2007).
  • 7Poulton, C.G., Movchan, A.B., McPhedran, R.C., et al.: Eigenvalue problems for doubly periodic elastic structures and phononic band gaps. Proc. R. Soc. Lond. Ser. A: Math. Phys. Eng. Sci. 456(2002), 2543-2559 (2000).
  • 8Serco Technical Assurance Services.: Typical austenitic weld infor- mation supplied by Serco TAS. May 2009.
  • 9The COMSOL Group, Stockholm, Sweden. COMSOL Multiphysics.
Acta Mechanica Sinica
2010年 第4期

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