Engineering › Materials science
Deformation mechanism in crystallines
Slip bands or stretcher-strain marks are localized bands of plastic deformation in metals experiencing stresses. Formation of slip bands indicates a concentrated unidirectional slip on certain planes causing a stress concentration.
Engineering › Materials science
Use of mathematical groups in magnetochemistry
The concept of a double group was introduced by Hans Bethe for the quantitative treatment of magnetochemistry.
Engineering › Materials science
Periodic optical nanostructure that affects the motion of photons
A photonic crystal is an optical nanostructure in which the refractive index changes periodically.
Engineering › Materials science
The microplane model, conceived in 1984, is a material constitutive model for progressive softening damage.
Engineering › Materials science
Ordered chemical structure with no repeating pattern
A quasiperiodic crystal, or quasicrystal, is a structure that is ordered but not periodic. A quasicrystalline pattern can continuously fill all available space, but it lacks translational symmetry.
Engineering › Materials science
Calculation for the size of a fatigue crack
A crack growth equation is used for calculating the size of a fatigue crack growing from cyclic loads. The growth of a fatigue crack can result in catastrophic failure, particularly in the case of aircraft.
Engineering › Materials science
Type of crystal structure
In crystallography, the diamond cubic crystal structure is a repeating pattern of 8 atoms that certain materials may adopt as they solidify.
Engineering › Materials science
Type of ceramic materials that are biocompatible
Bioceramics and bioglasses are ceramic materials that are biocompatible. Bioceramics are an important subset of biomaterials.
Engineering › Materials science
Single-wavelength anomalous diffraction (SAD) is a technique used in X-ray crystallography that facilitates the determination of the structure of proteins or other biological macromolecules by allowing the solution of the phase problem.
Engineering › Materials science
Material consisting of numerous extremely fine fibers of glass
Glass fiber (or glass fibre) is a material consisting of numerous extremely fine fibers of glass. Glassmakers throughout history have experimented with glass fibers, but mass manufacture of glass fiber was only made possible with the invention of finer machine tooling.
Engineering › Materials science
Crystallographic image processing (CIP) is traditionally understood as being a set of key steps in the determination of the atomic structure of crystalline matter from high-resolution electron microscopy (HREM) images obtained in a transmission electron microscope (TEM) that is run in the parallel illumination mode.
Engineering › Materials science
Phenomenon in crystallization
Crystal twinning occurs when two or more adjacent crystals of the same mineral are oriented so that they share some of the same crystal lattice points in a symmetrical manner. The result is an intergrowth of two separate crystals that are tightly bonded to each other.
