Thermomechanical Analysis (TMA)
Thermomechanical Analysis (TMA) is done to measure the response of different materials to heat. The change in properties of materials is measured with change in temperature.
Thermomechanical Analysis (TMA) is done to measure the response of different materials to heat. The change in properties of materials is measured with change in temperature.
How TMA works
A sample is gradually heated to a specified temperature or until its properties change. The change in physical properties of the sample is measured in response to the change in temperature. Force can also be applied during heating to determine the response of the material under different modes.
Strengths of TMA
Limitations of TMA
Uses of TMA
Thermochemical analysis is a fundamental procedure used across industries. It is heavily used in material science for the development of new materials. It is used in industries for designing products and for quality control. And it is also used to assess the stability of a material to heat.
Schematic diagram of TMA apparatus
A schematic diagram of a typical TMA apparatus is shown in Figure 1. Figure 2 shows a typical thermocouple used in the instrument.
Applications
Figure 3 is a TMA graph for a mixture of three different waxes melting at different temperatures. The onset of vertical displacement gives a simple and reproducible measure of the melting point of each component of the test mixture.
Sample requirements
The sample should be solid. It should be less than 26 mm in length, 4.7 mm in width, and 1.0 mm in height.
ASTM E572 test method covers the analysis of stainless and alloy steels by Wavelength Dispersive X-ray Fluorescence Spectrometry (WDXRF). It provides rapid, multi-element determinations with sufficient accuracy to assure product quality.
The ASTM D2674 is a standard test method for the analysis of sulfochromate etches solution used in the surface preparation of aluminum. The ASTM D2674 standard specifies a method for determining the efficacy of an etchant used to prepare the surface of aluminum alloys for subsequent adhesive bonding.
An immunological method for quantization of Hevea Natural Rubber (HNRL) proteins using rabbit anti-HNRL serum. Rabbits immunized with HNRL proteins react to the majority of the proteins present, and their sera have the capability to detect most if not all the proteins in HNRL.
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