Articles tagged with Tensile Stress
Kirigami researchers create twisty structures for flexible robotic components and soft actuators, exploiting geometrical design to enable rotation under stretching. The unique mechanical properties of these kirigami materials offer new potential applications in robotics and engineering.
Tomas Grejtak has been selected for the Early Career Award from the Society of Tribologists and Lubrication Engineers (STLE) for his research on wear, friction, and material deformation. The award recognizes his contributions to advancing the field of tribology and improving machine efficiency.
Researchers from Okinawa Institute of Science and Technology have catalogued the science behind Bashofu textiles, which have kept Okinawans cool for over 500 years. The study reveals the unique properties of Musa balbisiana var. liukiuensis fibers, including a honeycomb structure that effectively leads sweat away from the skin.
Parachute fibers' behavior under stress was studied using micro-CT scans, revealing they are not isotropic and respond differently to increasing loads. The findings inform processes like parachute assembly and improve models for screening parachute materials, making industries more cost-effective and time-efficient.
Researchers at IBS have developed a damage-free dry transfer printing technique for flexible electronic devices, overcoming existing challenges such as the use of toxic chemicals and mechanical damage. The new method allows for high-quality electronic materials to be transferred to flexible substrates without damage.
Researchers at UCL and INGV found that parts of the Campi Flegrei volcano have been stretched nearly to breaking point, indicating a higher risk of rupture. The study used a model of volcano fracturing to interpret patterns of earthquakes and ground uplift, suggesting that an eventual eruption could be preceded by weaker signals.
Researchers at Pusan National University have created a new algorithm that can accurately predict ice resistance and fracture points for ships navigating through the Arctic shipping routes. The model uses an elastic material approach, allowing it to study continuous ice-breaking processes, which is essential for efficient navigation.
The study investigates the anisotropy dependence of damage evolution and material removal behaviors in ultra-precision machining of MgF2 single crystals. The research team developed a stress field model, revealing that plastic deformation and cleavage fracture mechanisms were activated depending on the crystal orientation.
A new bulk copper-based alloy has demonstrated the largest tensile elastic strain at room temperature, exceeding 4.3%, thanks to reversible lattice strain in its BCC single phase structure. This material exhibits a low Young's modulus and high Poisson's ratio, making it highly elastic and strong.
A recent study found that mechanical ventilation can cause irreversible tissue damage in premature lungs, leading to impaired lung cell function. The study showed that even low pressure can result in structural changes on the cell surface, disrupting molecule transport and water balance.
Researchers at NIMS developed a new material processing technique inspired by kirigami to enhance local cooling/heating performance in plastics. This technology may be used to develop thermal management technologies in flexible electronics.
Researchers at Friedrich Schiller University Jena have developed a refined process for thermally tempering thin glass, removing limitations on strength. The new method uses a liquid coolant to create a thermal gradient, enabling the production of high-strength glasses without thickness restrictions.
A recent Arizona State University study reveals that intergranular stress-corrosion cracking can occur independently of simultaneous stress and corrosion, highlighting the need for new corrosion-resistant alloys.
Researchers developed a direct nano-kirigami method to create complex 3D shapes using flat films at the nanoscale. The technique enables precise manipulation of light and can be used for sensing, computation, and biomedical devices. A multidisciplinary connection between nanomechanics and nanophotonics has been established.
Researchers present a new strategy to exploit dynamically reinforced multilevel heterogeneous grain structures for high-strength and large-ductility materials. This approach achieves a strength-ductility combination in a single-phase, simple-structured alloy that would normally require complex heterogeneities.
A new research technique introduces tensile stress into both the channel and drift region of transistors, resulting in improved performance. The technique, using CESLs, offers better frequency performance and driving capability than unstrained devices.
Researchers found that grain size determines methane hydrate behavior under stress, with maximum capacity at 15-20 nm. This discovery has implications for predicting and preventing hydrate failure and exploring their use as a future energy source.
Mantle plumes may be responsible for breaking up continents, according to a new study. The researchers used high-resolution computer simulations to demonstrate how the interaction between a plume and a plate under tensile stress can lead to continental breakup, forming rift systems and creating volcanoes.
Researchers developed a new concept to control wrinkling patterns on hard nano-film/soft-matter substrate by patterning the surface with curves. The study found that concave-side curves suppress wrinkling, while convex-side curves induce it, making disordered wrinkling controllable.
Researchers found that poly(lactic-co-glycolic acid) conduit transplantation can significantly enhance the quality of sciatic nerve regeneration compared to traditional autogenous nerve grafting methods. The conduits increased maximum tensile load, stress, and elastic limit load while reducing strain.
Studies of gorilla teeth reveal an evolutionary trade-off between food processing efficiency and tooth durability. As teeth wear, functionality diminishes but contact areas increase to distribute forces.
Researchers developed a simple model to explain the difference between glass and molten materials, with spherical plastic particles in aqueous solution. The study found that internal tensile stresses persisted in the glassy state, distinguishing it from fluid behavior.
Researchers at UC San Diego identify three characteristics of biological materials that can be emulated in man-made materials: light weight, toughness and strength. Bio-inspired designs from nature could lead to better body armor, lighter aircraft and stronger materials.
The arch dam's performance is affected by the relaxation of its foundation following excavation. The study found that relaxation increases principal tensile stresses at the upstream face and compressive stress at the downstream face, which is undesirable for safety.
Researchers at NIST have shown that silicon crystals can develop cracks and breakdown under mechanical stress, contrary to conventional wisdom. The team's findings have significant implications for the design of micro-electromechanical system (MEMS) devices, which are critical components in various industries.
Researchers propose a new model, Frigid Faithful, which explains the formation of fractures and ridges on Saturn's moon Enceladus without requiring liquid water. The model describes how heat from a shallow source beneath the surface could lead to geyser-like activity and complex tectonic features.
CWRU researchers find that polysilicon's fatigue strength is strongly influenced by the ratio of compression to tension stresses, with microcracks originating on the surface. The study uses on-chip test structures to subject specimens to over a billion cycles, shedding light on this critical aspect of MEMS device reliability.
Using brittle failure theory, University of Michigan researcher Youxue Zhang can calculate the likelihood of fragmentation for a given magma sample based on composition, water content, and temperature. This calculation may help predict when a volcanic eruption will become deadly.