Researchers investigated the mechanisms behind internal pressure buildup in thermal protection system materials when exposed to high-enthalpy environments. The study aimed to understand how gases interact with the material's microstructure. This knowledge is crucial for developing effective thermal protection systems.

Source: https://www.nasa.gov/centers-and-facilities/nesc/insights-into-spallation-mechanisms-of-thermal-protection-system-materials-from-mass-spectrometry-and-hymets-testing/