Home / Journals / SL / Vol.8, No.2, 2012
Journal Menu
  • Open Access

    ARTICLE

    Control Effect of Fatigue Crack Propagation in the TiNi Fiber Reinforced Smart Composite

    A. Shimamoto1, C. C. Lee2, Y. Furuya3
    Structural Longevity, Vol.8, No.2, pp. 71-81, 2012, DOI:10.3970/sl.2012.008.071
    Abstract The TiNi fiber reinforced / PC composite material was developed, and shape memory effect, which would prevent fatigue crack growth, of the material was investigated through fatigue experiments. The fatigue behavior and crack propagation were observed under various temperature in the SEM servopulser, which is a fatigue testing instrument with scanning electron microscope. The results showed the effectiveness of fatigue resistance. The shape memory effect and expansion behavior of the matrix caused by increasing temperature created the fatigue crack propagation control mechanism. It was verified that the controlling of fatigue crack growth was attributed to the compressive stress field in… More >

  • Open Access

    ARTICLE

    Nondestructive and Destructive Testing of Reinforced Polymeric Materials

    E.E. Theotokoglou1, E. Sideridis1
    Structural Longevity, Vol.8, No.2, pp. 83-97, 2012, DOI:10.3970/sl.2012.008.083
    Abstract In this work a class a particle reinforced polymers have been investigated using nondestructive and destructive techniques. The velocities cl and ct of the longitudinal and transverse waves were evaluated using ultrasounds. From these and from the density of the material the modulus of elasticity, the shear modulus and the Poisson ratio were calculated by the appropriate relationships. The results were compared with those obtained from destructive tensile experiments and as well as with those derived from theoretical formulae. Also, their attenuation coefficient α and damage parameter D were obtained and an attempt was made to establish a relationship between… More >

  • Open Access

    ARTICLE

    An Exact Boundary Integral Equation Formulation for BEM Thermoelastic Analysis of Transversely Anisotropic Solids

    Y. C. Shiah1, C. L. Tan2
    Structural Longevity, Vol.8, No.2, pp. 99-107, 2012, DOI:10.3970/sl.2012.008.099
    Abstract In BEM analysis of generally anisotropic solids, the additional volume integral associated with thermal effects that appears in the direct formulation of the boundary integral equation (BIE) has hitherto been successfully transformed in an analytically exact fashion into surface ones only for two-dimensions (2D), and not for the three-dimensional (3D) case. This is due to the mathematical complexity of the Green’s function and its derivatives for the 3D solid. The presence of the domain integral destroys the distinctive feature of the boundary element method (BEM) as a truly boundary solution numerical analysis tool. As a precursor to treating this problem… More >

  • Open Access

    ARTICLE

    A Unique Constitutive Model for Soils in Landslide Analysis

    F. Dufour1, N. Prime1, F. Darve1
    Structural Longevity, Vol.8, No.2, pp. 109-115, 2012, DOI:10.3970/sl.2012.008.109
    Abstract In this contribution, an original constitutive model is proposed to describe, within a unique framework, the initiation, the propagation and the arrest phases of landslides. The model is built such that it is enable to model in one hand a stable stage with an elasto-plastic behaviour, and in another hand a viscous dominated behaviour. The transition between the two behaviours is performed by means of the second order work stability criterion. This model is applied for an undrained triaxial test, in which the stress invariant consistently falls after the transition. More >

  • Open Access

    ARTICLE

    Diffraction and Dynamic Stress Concentration around Multiple Holes in a Finite Elastic Solid by BEM

    S. Parvanova1, P. Dineva2, G. Manolis3
    Structural Longevity, Vol.8, No.2, pp. 117-123, 2012, DOI:10.3970/sl.2012.008.117
    Abstract The aim of the present study is to develop and validate an efficient boundary element method approach for solution of in-plane, time-harmonic problems in elastodynamics that involve finite elastic solids weakened by holes of different shapes. The modeling approach is within the framework of continuum mechanics and linear wave propagation theory. The results obtained show a sensitivity of both the dynamic stress concentration factor and the scattered wave field that develop in the finite solid to defect geometry, to wave interaction with the holes and to multiple hole interaction. More >

  • Open Access

    ARTICLE

    Radial Basis Functions Approximation Method for Numerical Solution of Good Boussinesq Equation

    Marjan Uddin1, Ghulam Kassem1
    Structural Longevity, Vol.8, No.2, pp. 125-137, 2012, DOI:10.3970/sl.2012.008.125
    Abstract An interpolation method using radial basis functions is applied for the numerical solution of good Boussinesq equation. The numerical method is based on scattered data interpolation along with basis functions known as radial basis functions. The spatial derivatives are approximated by the derivatives of interpolation and a low order scheme is used to approximate the temporal derivative. The scheme is tested for single soliton and two soliton interaction. The results obtained from the method are compared with the exact solutions and the earlier works. More >

Share Link

WeChat scan