Articles tagged with Hardness
Engineers at MIT validate the scratch test as a simple method to assess a material's fracture properties. By analyzing the force and dimensions of scratches, researchers can determine a material's toughness, making it a valuable tool for understanding how materials break.
Psychologists at Harvard University found that physical attributes of incidental objects can profoundly impact our social interactions. Researchers discovered that weight, texture, and hardness of objects can unconsciously influence judgments about unrelated events.
Researchers at the Eastman Institute found that acidic fruit juices like orange juice decrease tooth enamel hardness by up to 84%. Whitening products have no significant effect on enamel hardness. Poor oral hygiene and frequent consumption of acidic drinks can lead to severe tooth erosion.
A new study from Ohio State University found that home tooth bleaching products reduce enamel hardness by 1.2-2 nanometers, affecting its ability to bounce back after force. Researchers suggest reformulating products to minimize side effects.
A Georgia Institute of Technology researcher has developed a new boron carbide formation process that increases the hardness and improves the ballistic performance of the material used in body armor. The new method can yield higher relative densities and better ballistic performance than currently available methods.
Physicists at Ohio State University discovered that a glass semiconductor softens when exposed to low-power laser light, but returns to its original hardness when the light is turned off. The material's behavior is linked to the rigidity transition and the displacement of electrons in the latticework structure.
Researchers from Arizona State University, IBM Almaden Research Labs, and Lawrence Berkeley Laboratory have confirmed the alignment between electron spins in ferromagnets and anti-ferromagnets is colinear. This finding improves understanding of exchange bias, a phenomenon useful for controlling magnetization in magnetic disk storage.
New single-molecule magnets have been discovered by Indiana University researchers, offering a promising solution for increasing the density of digital information in hard drives and other devices. The breakthrough could enable storage densities up to 30 terabits per square centimeter, surpassing current bests.
Scientists have successfully synthesized a new cubic phase of silicon nitride with exceptional hardness, outperforming stishovite, a high-pressure modification of SiO2. The novel material has the potential to replace diamond in certain technological applications where its extreme hardness is required.
Golfers can expect to hit longer shots and experience a softer yet solid feel with the new Liquidmetal alloy, absorbing less energy than conventional materials. This high-performance material is also attractive for replacing traditional metals in sporting goods and aerospace products.
Sandia researchers develop a simple way to relieve internal stresses in amorphous diamond films, creating thick, stress-free coatings that are harder than known coatings. The coatings have also been used to create large-area free-standing membranes with desirable properties such as high hardness and low friction.
Researchers at Lawrence Berkeley National Laboratory have developed a method to coat disks and sliders with diamond-like carbon, allowing for increased storage capacity and improved durability. This breakthrough enables the creation of high-density data storage devices with reduced wear and tear.
A new electronic device can detect even small holes in high-pressure gas pipelines, issuing an immediate warning if a pipeline or tank is struck by a hard object. The system relies on listening devices that analyze signal changes from within the vessel to identify leaks.
Researchers at Michigan Technological University have developed a method to measure dynamic indentation hardness in materials, which could render traditional tests obsolete. The new device can achieve results in under 200 microseconds, reducing the need for costly and time-consuming tests.
The digital hard hat combines functions of a camcorder, tape recorder, notepad, and digital camera into one device. It allows workers to collect, store, receive, and transmit construction-project information via text, images, sound, and video.