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... Stretching of the Earth's upper crust is commonly accommodated by normal faulting, fault-related folding and/or fracturing such as veins and joints. However, an increasing number of outcrop-scale studies highlight that extension is also accompanied by bed-parallel slip (BPS). The identification of BPS surfaces is, however, challenging due to their localised nature within bedded host rock sequences ...
... In this work, a new structure for designing auxetic yarn and its geometrical analysis is presented. The proposed structure is referred to as a double-core helical auxetic yarn (DC-HAY). It consists of two core components of soft yarn with a larger diameter and one wrap component of stiff yarn with a smaller diameter. A primary geometrical model for predicting the Poisson’s ratio of the structure w ...
... Compared with monolithic materials, topologically interlocked materials (TIMs) exhibit higher toughness based on their enhanced crack deflection and deformation tolerance. Importantly, by reducing the block size of TIMs, their structural strength can also be improved due to the reduced flexural span. However, the assembly of microscale blocks remains a huge challenge due to the inadequacy of nanos ...
... Two B₂CO phases (oP8′ with sp²-sp³ hybridization coexist and mP16 with unitary sp³ hybridization) were predicted via structure searching and stability analysis. The study of formation enthalpy reveals that high pressure (HP) technology performed maybe an important method for synthesis. oP8′ and mP16 both have large mechanical modulus and they are typical materials with high hardness. Pressure has ...
... Landslides are one of the most common geological disasters with the complicated spatiotemporal processes, which can be partially reproduced in slip shear failure along the discontinuity in laboratory tests. However, the assessment and evaluation of shear behavior along the discontinuity is time-consuming and high-cost. To solve this problem, a new constitutive model is proposed to predict the shea ...
... Buckling tests were conducted using slender specimens of western hemlock. In the tests, the slenderness ratio was varied from 132 to 418 in which elastic buckling was induced, and the values of the critical load for buckling were obtained. When the deflection of the specimen was calculated from the loading-line displacement based on elastica theory, the value of deflection/load initially decreased ...
... Interactions between droplets are of fundamental importance for understanding phenomena involving droplet collision and coalescence that determine multiphase flow behavior. The quantitative understanding of these interactions is essential for the manipulation and control of emulsions or complex fluids. The existing methods for interaction force determination are typically based on expensive mechan ...
... Nanocomposite percolation networks have attracted increasing attention in the field of wearable devices. Generally, the large junction resistance caused by the small contact area in the percolation network is considered as the bottleneck in preparing high-performance electronics. In such electronics, an applied strain will lead to deformation on the fiber junction, subsequently increasing the shee ...
... This article concentrates on a geometric-based simulation method for warp-knitted tubular fabrics. The warp-knitted tubular fabric is unfolded as a two-dimensional flat fabric after analyzing the structural characteristics of this kind of fabric knitted on the double needle bar warp knitting machine. Based on the principle of spatial transformation, a coordinate transformation algorithm using matr ...
... This study proposes a model test system to study the evolutionary process of surface subsidence under the excavation disturbance of shallow depth and small-spacing soil tunnels. During the excavation of urban shallow small-spacing tunnels, the stress state of the middle soil pillar is complex, which further affects the deformation of the overlying strata. Based on the Yuhan Road underground tunnel ...
... A remote real-time monitoring system was developed for the remote real-time monitoring of mine slope deformation and internal forces. The system is based on cloud-computing technology and a 5S multimedia streaming monitoring data transmission system. It has now been applied to an open-pit iron mine in Nanfen to monitor the horizontal displacement of potential sliding surfaces. Compared with geomet ...
... Repetitive volcanoseismic signals, including very‐long‐period signals (VLP) and long‐period signals (LP), provide a unique probe of fluid transport processes inside magmatic‐plumbing system. While syneruptive signals are often detected and analyzed with regional or/and global seismic networks to retrieve eruption location and mechanism, repetitive noneruptive volcanoseismic signals are generally s ...
... Oil foams stabilized by crystallizing agents exhibit outstanding stability and show promise for applications in consumer products. The stability and mechanics imparted by the interfacial layer of crystals underpin product shelf life, as well as optimal processing conditions and performance in applications. Shelf life is affected by the stability against bubble dissolution over a long time scale, w ...
deformation, etc ; molecular dynamics; selenides; temperature; Show all 4 Subjects
Abstract:
... For practical applications of copper selenide (Cu₂Se) thermoelectric (TE) materials with liquid-like behavior, it is essential to determine the structure–property relations as a function of temperature. Here, we investigate β-Cu₂Se structure evolution during uniaxial compression over the temperature range of 400–1000 K using molecular dynamics simulations. We find that at temperatures above 800 K, ...
... Janus particles (JPs) and surfactants express different behaviors at the oil–water interface under compression. When both are present at the interface, their synergies result in a different collapse mechanism than when present individually depending on the concentration of the JPs and surfactants. Coarse-grained modeling methods were used to probe the synergies between Janus nanoparticles and noni ...
deformation, etc ; acoustics; geology; quantitative analysis; Show all 4 Subjects
Abstract:
... The quantitative determination of the geological strength index (GSI) and disturbance factor (D) in the Hoek–Brown failure criterion is of great value because it can increase the reliability of the rock engineering design. In this work, a quantitative method for estimating GSI and D values is developed by considering the acoustic wave velocity in the rock mass, Cₚ. These improved GSI and D values ...
... Flax fibre-reinforced polymer (FFRP) was utilised to manufacture ninety-nine pipes having variations in thickness and diameter, with all pipes having a constant length-to-diameter ratio of 6:1. Indentation and puncture experiments were performed on the FFRP pipes using conical nose, hemispherical nose, and wedge nose indenters to establish the effect of diameter, thickness, and indenter nose shape ...
deformation, etc ; hardness; microstructure; stainless steel; Show all 4 Subjects
Abstract:
... This work underscores the effect of local microstructural configuration on the dislocation movement and micro-mechanical behaviour in fine/ultra-fine-grained (< 2 μm), cold-rolled, and annealed 301L austenitic stainless steel by site-specific nanoindentation experiments. Indentation loading, holding, and unloading behaviour have been studied separately for five different microstructural categories ...
deformation, etc ; algorithms; altimetry; altitude; markets; Show all 5 Subjects
Abstract:
... In recent years, low-cost single-frequency GNSS receivers have been widely used in many fields such as mass navigation and deformation monitoring; however, due to the poor signal quality of low-cost patch antennae, it is difficult for carrier phase real-time kinematic (RTK) technology to fix the integer ambiguity. Differential GNSS (DGNSS) positioning with pseudorange can effectively meet the high ...
deformation, etc ; biosensors; chemical species; metabolites; Show all 4 Subjects
Abstract:
... Optical flexible biosensors are novel sensors fabricated on flexible or ductile materials that are used for the detection of analytes. Compared to traditional sensors, these biosensors offer greater flexibility, which allows them to adapt to different working environments, to meet the deformation requirements of humans. Flexible devices can not only detect alterations in analytes in vitro, but can ...