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The characterization technique optical microscopy showing the micron scale dendritic microstructure of a bronze alloy. Characterization, when used in materials science, refers to the broad and general process by which a material's structure and properties are probed and measured. It is a fundamental process in the field of materials science ...
The characterization of mechanical properties in polymers typically refers to a measure of the strength, elasticity, viscoelasticity, and anisotropy of a polymeric material. The mechanical properties of a polymer are strongly dependent upon the Van der Waals interactions of the polymer chains, and the ability of the chains to elongate and align ...
Dynamic mechanical analysis (abbreviated DMA) is a technique used to study and characterize materials.It is most useful for studying the viscoelastic behavior of polymers.A sinusoidal stress is applied and the strain in the material is measured, allowing one to determine the complex modulus.
Typical macroscale mechanical characterization is mostly performed under uniaxial tensile conditions. Despite the existence of other methods of mechanical characterization such as three-point bending, hardness testing, etc., uniaxial tensile testing allows for the measurement of the most fundamental mechanical measurement of the specimen, namely its stress-strain curve.
Besides material characterization, the material scientist or engineer also deals with extracting materials and converting them into useful forms. Thus ingot casting, foundry methods, blast furnace extraction, and electrolytic extraction are all part of the required knowledge of a materials engineer. Often the presence, absence, or variation of ...
Some characteristics of a material can be measured without disturbance, such as dimensions, mass, volume, density. However, measurement of mechanical properties normally involves disturbance of the system being measured. The measurement often reflects the combined material and measuring device as the system.
Mechanical testing covers a wide range of tests, which can be divided broadly into two types: those that aim to determine a material's mechanical properties, independent of geometry. [1] those that determine the response of a structure to a given action, e.g. testing of composite beams, aircraft structures to destruction, etc.
In materials science and solid mechanics, biaxial tensile testing is a versatile technique to address the mechanical characterization of planar materials.It is a generalized form of tensile testing in which the material sample is simultaneously stressed along two perpendicular axes.