The densification of zinc powders by uniaxial hot pressing is investigated under both isothermal and thermal cycling conditions. Thermal cycling results in enhanced densification kinetics as compared to isothermal compaction at the upper cycle temperature. Using mechanistic models of initial-stage powder densification, the experimental data are analyzed to reveal the creep stress-exponent and a...

Aluminum syntactic foams with densities of 1.2–1.5 g/cm3 were deformed at 500 ◦C under constant uniaxial compressive stresses ranging from to 14 MPa. The foam creep behavior is characterized by a short primary stage and a long secondary stage where the strain rate is constant and inimum, followed by a tertiary stage at high stresses. The minimum strain rate varies with stress according to an ap...

Non-planar solid-fluid-solid interfaces under stress are very common in many industrial and natural materials. For example, in the Earth’s crust, many rough and wavy interfaces can be observed in rocks in a wide range of spatial scales, from undulate grain boundaries at the micrometer scale, to stylolite dissolution planes at the meter scale. It is proposed here that these initially flat solid-...

Adding basalt fiber (BF) can effectively enhance the performance of asphalt mixtures and improve service quality pavement. However, effect BF on high-temperature different types systematic test analysis are still not well known. To address this issue, three typical AC-13, SMA-13, SUP-13 were selected. Wheel tracking test, uniaxial penetration dynamic modulus creep conducted. In addition, releva...

Micro-cracks are known to greatly affect the mechanical properties of granite and subcritical crack growth (SCG) is considered be main mechanism brittle creep in rocks, including granite. Here, we provide new uniaxial compressive strength experiments for Lanhélin granite, a multi-crack numerical model explain experimental observations. We first thermally-stressed our samples create thermal micr...

In this paper, we investigated the temperature-dependent viscoelastic behavior of dielectric elastomers (DEs) and the effects of viscoelasticity on the electro-actuation behavior. We performed dynamic thermomechanical analysis to measure the master curve of the stress relaxation function and the temperature dependence of the relaxation time of VHB 4905, a commonly used DE. The master curve was ...

The exact prediction of creep is of great significance for the simulation of the stress field of concrete creep. To overcome the limitation of the current prediction model of creep, pertinent models abroad are referred and adopted so that other factors can be controlled under standard state but only the creep varies to evaluate the feasibility of the prediction model with current characteristic...

Abstract Different loading protocols have been developed in the past to investigate creep properties of materials using instrumented indentation testing technique. Recently, a new method was presented, which contact pressure is kept constant during test segment, similar stress applied uniaxial experiment. In this study, results tests are compared and load hold experiments on ultrafine grained C...