Articles tagged with Plastic Deformation
Researchers at Texas A&M University and DEVCOM Army Research Laboratory developed a hybrid foam with a 3D-printed plastic skeleton, offering tunable, lightweight and ultra-durable properties. The composite combines ordinary foam with plastic struts, allowing it to absorb more energy and withstand greater forces.
Fatigue resistance can be greatly enhanced by controlling how metal plasticity localizes at small scales. Researchers used high-throughput automated high-resolution digital image correlation to map plastic deformation with unprecedented spatial resolution.
Researchers at the University of Gothenburg developed a bicycle helmet with improved shock-absorbing material that utilises auxetic metastructures. The new helmet design provides better protection against head injuries, is lighter, and can be customised to individual head shapes using 3D printing.
Researchers at Osaka Metropolitan University developed a simple method to measure deformations in thin membrane materials using photogrammetry and a single camera. This technology can accurately detect wrinkle size and wavelength, enabling more efficient spacecraft operations.
A study published in Nature Materials reveals that cooperative particle rearrangements influence structural order and dynamic behavior in glass-forming liquids. The researchers identified a key process called T1, which maintains local order and leads to super-Arrhenius behavior.
Researchers investigated the impact of gradient microstructure on strain hardening in CoCrNi MEA, revealing that fault energy characteristics trigger nanoscale deformation twins and phase transformations to enhance strain hardening ability. Microscopic structures like nanotwin gradients also improve mechanical properties.
Researchers at Iowa State University have found unusual phase transformations in silicon when subjected to large and permanent deformations. This discovery reduces the required pressure to create new material phases, opening up new possibilities for industrial applications.
A team of researchers from Shibaura Institute of Technology developed a moving particle simulation-aided soil plasticity analysis for earth pressure balance shield tunnelling. The study found that earth pressure is a reliable indicator for analyzing soil plasticity and proposed a computer-aided analysis system that precisely reflects e...
Researchers at Lehigh University use mayonnaise to simulate the phases of Rayleigh-Taylor instability in nuclear fusion, which could inform the design of future inertial confinement fusion processes. The team found that understanding the transition between elastic and stable plastic phases is critical for controlling the instability.
A study published in Science Advances investigated the formation of cracks in a nickel-base alloy. The researchers found that one widely-held hypothesis does not apply to this alloy and discovered new information about crack initiation. This breakthrough helps lay the groundwork for better predictions of hydrogen embrittlement.
The Purdue researchers created a patent-pending process to develop ultrahigh-strength aluminum alloys suitable for additive manufacturing. The alloys exhibit high strength and beneficial large plastic deformability, exceeding the range of traditional high-strength aluminum alloys.
Researchers have developed a method to make ceramic materials more plastically deformable at room temperature by introducing high-density defects through preloading at high temperatures. This approach has been validated in various ceramic systems and shows promise for improving the industrial applications of ceramics.
Researchers created a polymer electrolyte membrane with an interpenetrating network that enhances fatigue resistance and prolongs the lifespan of fuel cells. The composite membrane exhibits a lifespan of 410 hours, compared to 242 hours for the original Nafion membrane.
The team proposed a novel machine learning model with data augmentation, which accurately predicts the plastic anisotropic properties of wrought Mg alloys. The model showed significantly better robustness and generalizability than other models, paving the way for improved design and manufacturing of metal products.
A team of researchers at Texas A&M University is developing a new method for understanding metal behavior under extreme conditions using metal cutting, a traditional manufacturing tool. The process involves shearing or deforming the metal to extreme levels under high rates and can provide fundamental information on material strength an...
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.
Researchers have discovered a way to create ductile ceramics that can exhibit ultimate strength of up to 11 GPa, potentially leading to improved energy efficiency and reduced material usage. However, further studies are needed to scale up the process and apply it to larger materials.
A team from University of Science and Technology of China discovered the microscopic mechanism behind traditional Xuan paper's high strength and toughness. They developed a high-performance, high-haze transparent film with excellent properties, including high light transmittance, flexibility, and thermal stability.
An international team of researchers solved a puzzling phenomenon involving vortex-like structures in the Cold Spray deposition process. The discovery, published in Materials & Design, reveals that these structures form when the CS process has low deposition efficiency, leading to improved adhesion between coatings and substrates.
Scientists discovered that all materials develop identical statistical properties when exposed to mechanical deformation, leading to self-affine surface roughness. This finding explains the observed universality of surface roughness across different scales and materials.
Researchers at Peter the Great St. Petersburg Polytechnic University developed a new method of nondestructive testing to diagnose drilling rig elements in oil wells, improving efficiency and reducing repair costs. The method uses mathematical models of fracture mechanics to estimate damage throughout the structure.
Researchers at Toyohashi University of Technology studied the real-time deformation of carbon nanocoils under axial loading, revealing their elastic boundary and average spring constant. The study's findings may pave the way for developing CNC-based applications in the future.
Researchers at MIT demonstrated a novel automated fabrication process for producing highly aligned polymer films (HAPFs) with superior mechanical and thermal properties. The process involves sol-gel extrusion, structure freezing and drying, and mechanical drawing, resulting in uniform alignment of molecular chains.
Penn researchers develop model material exhibiting reversible plastic deformation with characteristics of plastic deformation on the macroscale. This novel behavior could lead to designing materials with unique properties, such as dampening vibrations or protecting against impacts.
Researchers investigated how initial free volume distribution impacts plasticity in metallic glasses (MGs). They found that a large amount of randomly distributed free volume leads to more potential sites for shear band initiation and branching, resulting in increased plasticity. However, too much free volume can also cause failure by ...
A reconstructive technique successfully corrects severe nasal septal deformities with high functional and aesthetic results. Postoperative complications are rare, and the technique is deemed safe and practical for surgeons dealing with difficult cases.