Ultrasonic measurements of wave-propagation characteristics in composite and heterogeneous materials provide an excellent means to study their mechanical properties. In recent years we have studied, both theoretically and experimentally, characteristics of elastic-wave propagation in particlereinforced composites ...
ultrasonic materials testing/ Cr-Mo ferritic steelultrasonic velocitylong term aging behaviourprecipitate microstructureThe measurement of ultrasonic velocity of 9Cr-1Mo ferritic steel thermally aged at 793 and 873 K exhibited four distinct regimes in the variation of ultrasonic velocity with aging time....
In this article the author summarizes studies which go some way towards a solution to some of these problems: determinations of fibre type, volume fraction, alignment of a laminate and porosity in the matrix. It was found that velocity measurement gave much information on these properties....
Fuente. Influence of aggregates and air voids on the ultrasonic velocity and attenuation in cementitious materials. European Journal of Enviromental and Civil Engineering, 2011, 15, 4, 501-517, AprilM. Molero, I. Segura, S. Aparicio, and J. V. Fuente, "Influence of aggregates and air ...
A 'multiparameter' method for indirect evaluation of intrinsic anisotropy values for prestressed engineering materials is discussed. The proposed method is... NY Nikitina,LA Ostrovsky - 《Ultrasonics》 被引量: 41发表: 1998年 A device for measuring the velocity of ultrasonic waves: An application to...
Ceramic and composite material characterization using ultrasonic velocity C-scans: J.J. Gruber US Army Materials Technology Laboratory, Watertown, USAExistence of moduli for the first homology group of equivariant Lipschitz homeomorphism (Topological Transformation Groups and Related Topics) Abe Kojun RIMS ...
However, as the drawing velocity increased, the effect upon the drawing force became less pronounced, because the number of oscillations per unit of length decreased. Djavanroodi et al.8 investigated the impact of ultrasonic vibrations on equal channel angular pressing (ECAP) and found that, the ...
(see Supplementary Fig.11). Tensile tests were performed at room temperature with the strain rate of 0.001 s−1. Three-point bending tests were performed on the butt joint (sheet) specimens with dimensions of 20 mm × 10 mm × 0.5 mm at a displacement velocity of 0.5...
Material velocity range 500-9999m/s, 0.0197-0.3937in/us Alarm setting Dynamically change the color of thickness value when the measuring value exceeds the upper limit or lower limit of preset Units Inch or millimeter Language Chinese, English, France, Germany, Japa...
of physics and mathematics, namely mathematical possibilities to describe texture, classic elasticity theory, analytical models for ultrasonic wave propagation in isotropic and anisotropic materials =-=[2,3,4]-=-. As a result, the angular dependence of the sound velocity of a metal with cubic ...