Investigating or analysing materials by the use of thermal means

Classification Context

Section:

PHYSICS

Class:

MEASURING; TESTING

Subclass:

INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES

Scope Notes

Limiting references: investigating strength properties of solid materials by application of mechanical stress analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid analysing materials by measuring the pressure or volume of a gas or vapour investigatingdensity or specific gravity of materials; analysing materials by determining density or specific gravity investigating flow properties of materials, e.g. viscosity, plasticity; analysing materials by determining flow properties investigating surface or boundary effects, e.g. wetting power; investigating diffusion effects; analysing materials by determining surface, boundary, or diffusion effects investigating characteristics of particles; investigatingpermeability, pore-volume, or surface-area of porous materials investigating resistance of materials to the weather, to corrosion, or to light investigatingmaterials by mechanical methods investigating or analysing materials by the use of optical means, i.e. using infra-red, visible, or ultra-violet light investigating or analysing materials by the use of microwaves investigating or analysing materials by the use of other wave or particle radiation, e.g. X-rays or neutrons

Related Keywords

Child Classifications

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• G01N 25/02 by investigating changes of state or changes of phase; by investigating sintering
• G01N 25/14 by using distillation, extraction, sublimation, condensation, freezing, or crystallisation
• G01N 25/16 by investigating thermal coefficient of expansion
• G01N 25/18 by investigating thermal conductivity
• G01N 25/2 by investigating the development of heat, i.e. calorimetry, e.g. by measuring specific heat, by measuring thermal conductivity
• G01N 25/5 by investigating flash-point; by investigating explosibility
• G01N 25/56 by investigating moisture content
• G01N 25/72 Investigating presence of flaws