HYBRID ANALYSIS OF LAMB WAVE REFLECTION BY A CRACK AT THE FIXED EDGE OF A COMPOSITE PLATE

被引:22
作者
KARUNASENA, WM
LIEW, KM
KITIPORNCHAI, S
机构
[1] UNIV QUEENSLAND,DEPT CIVIL ENGN,BRISBANE,QLD 4072,AUSTRALIA
[2] NANYANG TECHNOL UNIV,SCH MECH & PROD ENGN,CTR DYNAM & VIBRAT,SINGAPORE 2263,SINGAPORE
关键词
D O I
10.1016/0045-7825(95)00802-8
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
A hybrid method has been proposed to solve the problem of reflection of time harmonic plane strain waves normally incident upon a thin planar crack located at the fixed-end of a semi-infinite, uniaxially fibre-reinforced, composite plate of linearly elastic materials. The hybrid method combines a finite element formulation in a bounded interior region of the plate with a wave function expansion representation in an unbounded exterior region. The fixed-end crack is contained in the interior region. The dispersion relation of the plate is solved through an approximate technique to obtain wave functions. The amplitudes of reflected waves are determined by satisfying the continuity conditions at the boundary between the interior and exterior regions. It is shown that the results agree well with known solutions for zero-thickness and through-thickness cracks in a homogeneous isotropic plate. New results are presented for a graphite/epoxy composite plate. The accuracy of the results is verified by checking the satisfaction of the principle of energy conservation and reciprocity relations. The influence of fibre direction elastic stiffness on reflection coefficients has also been studied. The results of the study show potential application in ultrasonic non-destructive evaluation.
引用
收藏
页码:221 / 233
页数:13
相关论文
共 24 条
[1]   DIFFRACTION OF HORIZONTALLY POLARIZED SHEAR-WAVES BY NORMAL EDGE CRACKS IN A PLATE [J].
ABDULJABBAR, Z ;
DATTA, SK ;
SHAH, AH .
JOURNAL OF APPLIED PHYSICS, 1983, 54 (02) :461-472
[2]  
[Anonymous], 2016, FINITE ELEMENT PROCE
[3]  
Auld B. A., 1990, ACOUSTIC FIELDS WAVE, V2
[4]   CALCULATED ELASTIC-CONSTANTS OF COMPOSITES CONTAINING ANISOTROPIC FIBERS [J].
DATTA, SK ;
LEDBETTER, HM ;
KRIZ, RD .
INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES, 1984, 20 (05) :429-438
[5]   WAVE-PROPAGATION IN LAMINATED COMPOSITE PLATES [J].
DATTA, SK ;
SHAH, AH ;
BRATTON, RL ;
CHAKRABORTY, T .
JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA, 1988, 83 (06) :2020-2026
[6]  
DATTA SK, 1990, ELASTIC WAVES ULTRAS
[7]   EDGE VIBRATIONS IN LAMINATED COMPOSITE PLATES [J].
DONG, SB ;
HUANG, KH .
JOURNAL OF APPLIED MECHANICS-TRANSACTIONS OF THE ASME, 1985, 52 (02) :433-438
[8]  
DONG SB, 1978, J ENG MECH DIV-ASCE, V104, P801
[9]   THE REFLECTION OF A SYMMETRIC RAYLEIGH-LAMB WAVE AT THE FIXED OR FREE EDGE OF A PLATE [J].
GREGORY, RD ;
GLADWELL, I .
JOURNAL OF ELASTICITY, 1983, 13 (02) :185-206
[10]   RECENT ADVANCES IN ANALYSIS OF LAMINATED BEAMS AND PLATES .2. VIBRATIONS AND WAVE-PROPAGATION [J].
KAPANIA, RK ;
RACITI, S .
AIAA JOURNAL, 1989, 27 (07) :935-946