The velocity of elastic wave is usually the essential property that has to be measured in advance, when applying the civil NDT technique based on the theory of transient elastic wave. The accuracy and handiness of the velocity measuring method are often become a key about the practicability of the NDT method. In this paper, based on the transient elastic wave theory, an elastic-wave-velocity me...

Pressure vessel is a kind of special equipment which involved in various industries. Once it damaged, will cause great loss to people's life and property. The traditional elastic modulus reduction method for upper bound limit analysis pressure vessels adopts the elastic-perfectly plastic material model. This result waste materials without considering strain hardening effect. So effect introduce...

Ti and alloys have charming comprehensive properties (high specific strength, strong corrosion resistance, excellent biocompatibility) that make them the ideal choice in orthopedic dental applications, especially particular fabrication of implants. However, these present some shortcomings, specifically elastic modulus, wear, corrosion, biological performance. Beta-titanium (β-Ti) been studied a...

As a fundamental property of pressure-induced amorphization (PIA) in ice and ice-like materials (notably α-quartz), the occurrence of mechanical instability can be related to violation of Born criteria for elasticity. The most outstanding elastic feature of α-quartz before PIA has been experimentally reported to be the linear softening of shear modulus C44, which was proposed to trigger the tra...

Adsorption of bioparticles to affinity surfaces involves polyvalent interactions, complicating greatly the recovery of the adsorbed material. A unique system for the efficient binding and release of different cells and particles is described. Affinity-bound bioparticles and synthetic particles are detached from the macroporous hydrogel matrix, a so-called cryogel, when the cryogel undergoes ela...

Miroscopic theories of nematic liquid crystals allow us to calculate from a few molecular parameters a number of macroscopic and static properties, such as the equation of state, the short and long-range order parameters and the visco-elastic coefficients. An attempt to provide such a microscopic theory which, for the more common nematics, fits the experimental data for the elastic constants an...

We introduce the new concept of elastic block ciphers, symmetrickey encryption algorithms that (1) for a variable-size input do not expand the plaintext (i.e., do not require plaintext padding) and (2) adjust their computational load proportionally to the size increase. Contrary to stream ciphers, elastic block ciphers maintain the diffusion property and non-synchronicity of traditional block c...