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Top 20 Plastic Testing Methods for Thermoplastics & Composites

Written by Rahul Verma | Updated: June 16, 2026

Top 20 Plastic Testing Methods for Thermoplastics & Composites

Written by Rahul Verma | Updated: June 16, 2026

Top 20 Plastic Testing Methods

Plastic testing methods are used to test a wide range of plastics, including thermoplastics, thermosets, and elastomers. The top 20 plastic testing methods are given below:

Tensile Testing
Compression Testing
Flexural Testing
Impact Testing
Hardness Testing
Melt Flow Index (MFI) Testing
Differential Scanning Calorimetry (DSC)
Thermogravimetric Analysis (TGA)
Fourier Transform Infrared Spectroscopy (FTIR)
Gel Permeation Chromatography (GPC)
Dynamic Mechanical Analysis (DMA)
Water Absorption Testing
Flammability Testing
Biocompatibility Testing
Aging and Weathering Testing
Chemical Resistance Testing
Thermal Conductivity Testing
X-ray Diffraction (XRD)
Scanning Electron Microscopy (SEM)
Transmission Electron Microscopy (TEM)

ABOUT AUTHOR

Rahul Verma

Author

Before joining Infinita Lab, Rahul held R&D roles at two early-stage startups, focusing on additive manufacturing, materials characterization, and developing application-specific material solutions. Additive manufacturing in a startup context means owning the full loop — feedstock qualification, print-parameter development, post-processing protocol, characterization strategy, and qualification framework — without the safety net of an established materials database or a captive lab. That kind of R&D pressure trains a specific skill: the ability to ask the right characterization question first, because the project does not have a budget for the wrong one. Most additive manufacturing failures are not print failures; they are characterization-strategy failures upstream.... Read More