Thermo-Mechanical Analysis (TMA)
Thermo-Mechanical Analysis (TMA) evaluates how a material expands, contracts, or deforms in response to controlled temperature changes under an applied mechanical load. By measuring dimensional changes as a function of temperature or time, TMA provides quantitative insight into thermo-mechanical behavior that directly affects material performance.
At Materials Metric, TMA is used to determine coefficient of thermal expansion (CTE), softening point and glass transition behavior, dimensional shrinkage or swelling, film thickness and indentation response, and creep or stress-relaxation under thermal conditions. These measurements are essential for materials used in high-precision, temperature-sensitive applications, including polymers, coatings, composites, electronic materials, and advanced engineering systems.
Use of TMA
TMA helps researchers and engineers:
โข Measure thermal expansion and contraction
โข Analyze dimensional stability of polymers, films, composites, and laminates
โข Determine softening or glass transition temperatures
โข Evaluate creep behavior under load at elevated temperatures
โข Assess thermal mismatch between layered or bonded structures
โข Predict material performance in end-use thermal environments
Applications of TMA
- Polymers & Plastics: CTE, Tg, dimensional changes
- Composites & Laminates: mismatch and shrinkage analysis
- Medical Devices: thermal-induced deformation
- Electronics: multilayer thermal compatibility
- Coatings & Films: thickness, penetration, softening behavior
Sample Analysis Process
1. Submission & Objective Review
- Define test goals (expansion, penetration, creep, softening)
โข Select appropriate probe mode (expansion, penetration, tension, compression)
โข Establish heating/cooling rates and temperature ranges
2. Sample Preparation
- Samples are tested as solid pieces, never dissolved
โข Cut to precise dimensions according to probe mode
โข Surfaces trimmed for flat, parallel contact
โข Soft materials may require controlled drying or conditioning
โข Films carefully cut to avoid edge defects
3. TMA Testing
- Controlled temperature scan with dimensional change measurement
โข Optional load for creep analysis
โข Data collected continuously for high-resolution dimensional tracking
4. Data Processing & Reporting
- CTE values
โข Softening temperature and Tg
โข Dimensional-change graphs
โข Interpretation aligned with material performance and engineering requirements
Why Choose Materials Metric for Your TMA Analysis
Materials Metric provides high-precision thermal-mechanical characterization with an engineering-driven approach.
Our TMA services offer:
โข Accurate CTE measurements for design and qualification
โข Sensitive softening and Tg analysis using probe-based detection
โข Custom testing for films, foams, laminates, composites, and medical materials
โข Creep and dimensional-stability testing under realistic loads
โข Clear interpretation connecting results to material reliability, product performance, and thermal compatibility
We turn dimensional data into precise engineering insights for R&D, product design, and regulatory support.
