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The measurement of changes in the volume of a liquid or dimensions of a solid which occur in phenomena such as allotropic transformations, thermal expansion, compression, creep, or magnetostriction.



a branch of physics that studies the dependence of the dimensional changes of bodies on external conditions, such as temperature, pressure, electric and magnetic fields, and ionizing radiation. Basically, dilatometry deals with the thermal expansion of bodies and its various anomalies (occurring, for example, during phase transitions). Instruments used in dilatometry are called dilatometers. Dilatometric methods are widely used in physics to study the properties of substances as well as in the study of materials.

References in periodicals archive ?
The results cannot be observed by dilatometry as the signals are too weak.
t] Dilatometry JMatPro [[degrees]C] [[degrees]C] [Ar.
Cryogenic dilatometry is also included in thermal analysis capabilities.
Volume measurements, or dilatometry, is frequently used to determine a polymer's Tg (ref.
Topics include Differential Scanning Calorimetry and differential thermal analysis (DSC/DTA), Thermogravimetry, Thermomechanical Analysis and Dilatometry, Dynamic Mechanical Analysis, Micro-Thermal Analysis, Hot Stage Microscopy, and Instrumentation.
Traditionally, the solid fat index was calculated using dilatometry but this is an awkward technique, and the results can be imprecise and subjective.
Another means of examining fundamental thermodynamic phenomena is the use of high-pressure dilatometry to measure the pressure-volume-temperature dependence of polymers.
In addition, pressure dilatometry measurements were used to calculate the equation of state parameters for the polybutadienes.
According to dilatometry data (16) and microhardness measurements, the structure of PA-6 exposed to ECMAE must contain areas with fiber-like entities.
The results of thermal analysis, dilatometry, birefringence, sonic measurements and x-ray scattering are given in table 2.