Research news on Mechanical & acoustical properties

Mechanical and acoustical properties as a research area focuses on characterizing and modeling how materials and structures respond to mechanical loads and acoustic waves, including stress–strain behavior, elasticity, viscoelasticity, damping, wave propagation, impedance, and sound absorption or transmission. It integrates solid mechanics, continuum mechanics, and acoustics to understand couplings between structural dynamics and sound fields, often using experimental techniques such as dynamic mechanical analysis, ultrasonic testing, and impedance tube measurements, alongside analytical and numerical methods (e.g., finite element and boundary element modeling). This research underpins the design and optimization of materials and systems for vibration control, noise reduction, ultrasonic devices, and acoustic metamaterials.

Immune cells have a 'sense of touch,' scientists discover

Scientists have long believed that tissue-resident memory T cells—which remain in tissues after an infection has cleared and respond rapidly if the threat returns—are shaped primarily by biochemical signals. A McGill University–led ...

Strain turns non-chiral crystals left- or right-handed on demand

Mechanical strain is one of the most common tools used to tailor the properties of materials. In piezoelectric materials, stretching or compressing a crystal generates an electrical polarization. In piezomagnetic materials, ...

Why some glasses break suddenly while others deform smoothly

If a liquid is cooled slowly to its freezing point, it becomes a crystal in which the constituent particles are arranged in an ordered pattern. In contrast, when the liquid is cooled very quickly, the particles are unable ...

Measuring iron in motion at Earth-core conditions

It was a journey to the center of the Earth, if only for the briefest of moments. But rather than tunneling thousands of miles from Earth's surface, researchers from Lawrence Livermore National Laboratory (LLNL) and several ...

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