Métodos no destructivos / B. A. Jayne,...[et al.]

Contenido : V. 1 FundAmentales. Vibrational properties of wood. Vibrational testing of wood. Dynamic strength and elastic properties of wood. . Vibration, strength, and elastic properties of clear Douglas-Fir at various levels of moisture content. Static and dynamic strength and elastic properties of ponderosa and loblolly pine. Acoustical properties of wood: a critique of the literature and a survey of practical applications. Cell wall structure and wood properties determined by acoustics-a selective review. Overview of the use of ultrasonic technologies in research on wood properties. Ultrasonic methods in evaluation or inhomogeneous materials. Physical and elastic characteristics of fiber reinforced composites. Wood characterization through ultrasonic waves. Longitudinal stress waves for lumber stress grading: factors affecting applications: state of the art. Simulation study on stress wave velocity in wood above fiber saturation point. Dynamic modal tests of timber evaluation according to the Euler and Timoshenko theories. Natural vibration analysis of clear wooden beams: a theoretical review.Comparison of three equations for predicting stress wave velocity as a function of grain angle. / B. A. Jayne,...[et al.]. V. 2 Ultrasonido. Ondas de esfuerzo. Acoustic emission and acousto-ultrasonic techniques for wood and wood-based composites: a review. Stress wave timing nondestructive evaluation tools for inspecting historic structures: a guide for use and interpretation. Nondestructive testing for assessing wood members in structures: a review. Appendix reference listing from the NDT of wood symposium series. Inspection of timber bridges using stress wave timing nondestructive evaluation tools: a guide for use and interpretation. Acoustoelastic birefringence effect in wood I: Effect of applied stresses on the velocities of ultrasonic shear waves propagating transversely to the stress direction. Effect of compressive stress on the velocity of ultrasonic longitudinal waves parallel to the transverse direction of the wood. Effect of applied stresses on the velocity of ultrasonic waves propagating normal to the direction of the applied stress. Relationship of the stress wave and static bending determined properties of four northeastern hardwoods. Grading of construction timber by ultrasound. Differences in acoustic velocities by resonance and transit-time methods in an isotropic laminated wood medium. Effects of grain and ring angles on ultrasonic velocity in wood. Moisture content and temperature effect on ultrasound timber grading. Dispersion of ultrasonic waves in eucalyptus lumber as a function of the geometry of boards. Effect of cross-sectional change of a board specimen on stress wave velocity determination. Experimental data correction of the dynamic elastic moduli, velocity and density of solid wood as a function of moisture content above the fiber saturation point. Estimating the the influence of knots on the local longitudinal stiffness in radiata pine structural timber. Detection of knot and split of rubberwood by non-destructive ultrasonic method. / Sumire Kawamoto,...[et al.]. V. 3 Vibraciones transversales. On the frequency dependence of the modulus of elasticity of wood. Assessment severity and localisation of a transversal crack in a wood beam through a study of its natural modes of vibration. Stiffness of spruce wood-influence of moisture conditions. Vibrational properties of green wood in high temperature water vapor. Relationship between non destructive and static modulus of elasticity of commercial wood plastic composites. Relationship among the dynamic and static elastic properties of air-dry eucalyptus delegatensis. Natural frequency of wood-a reliable parameter for grading timber of all qualities?. The influence of wood moisture content on dynamic modulus of elasticity measurements in durability testing. The use of an acoustic technique to assess wood decay in laboratory soil-bed tests. Dynamic MOE of 55 species using small wood beams. Effectiveness of fundamental resonant frequency for determining the elastic properties of argentinean eucalyptus grandis in structural sizes. Nondestructive determination of wood strength and elasticity by vibration. Nondestructive evaluation of strength performance for finger-jointed wood using flexural vibration techniques. The effect of steaming and moisture change on the resonance frequency of wood. Influence of rotatory inertia, shear deformation and support condition of natural frequencies of wooden beams. Predicting the stiffness of structural timber using dynamic modal tests. Dynamic modal tests of timber evaluation according to the Euler and Timoshenko theories. Application of modal analysis by transfer function to nondestructive testing of wood I: determination of localized defects in wood by the shape of the flexural vibration wave. II: modulus of elasticity evaluation of sections of differing quality in a wooden beam by the curvature of the flexural vibration wave. Nondestructive evaluation of bending properties of flat square sawn timber. / D. Ouis,...[et al.].