Thermomechanical Analysis (TMA) is a technique used to study the physical properties of materials as they are subjected to changes in temperature and mechanical stress. It measures dimensional changes in a sample, such as expansion or contraction, while heating or cooling it. This helps in understanding how materials behave under different thermal conditions. TMA is commonly used in materials science, polymer research, and quality control. By analyzing the results, researchers can determine important characteristics like glass transition temperature, thermal expansion coefficients, and mechanical properties, which are crucial for material selection and application in various industries.