COMPOSITE ENGINEERING & DURABILITY

Predict long-term degradation in chemically exposed polymer composites. We model chemical ageing, swelling, and plasticisation to estimate component lifespan without long-term testing. Using calibrated EOS data, CheFEM 3 interfaces with Abaqus and Ansys to simulate diffusion-induced property changes and their impact on performance.

Includes:
■  Ageing & material softening projection
■  Swelling-induced stress redistribution
■  Service life forecasting under H₂ / CO₂

Assess retention of modulus, load-bearing capacity, and fracture potential over time. We combine mechanical FEM with chemical degradation models to simulate modulus loss, stress decay, crack initiation, and failure under pressure - supporting both design and forensic evaluations.

Includes:
■  Modulus retention and creep analysis
■  Fracture mechanics and crack growth
■  Stress–strain–chemical coupling
See also: Fracture Case Study – JEC Composites Magazine (2017)

Quantify gas permeation and leakage risks in real-life operating environments. We simulate hydrogen, CO₂, and hydrocarbon diffusion through polymer-based seals, gaskets, liners, and barriers - identifying critical zones for breakthrough and fugitive emissions. Our models integrate geometry, time–temperature–pressure profiles, and material diffusion data to support regulatory compliance and leakage mitigation.

Includes:
■  Permeation & breakthrough simulation
■  Gas barrier performance evaluation
■  Support for risk assessments
See also: NBR Seal Case Study (Jahrbuch Dichten 2021)