ICY PRECISION - Material Testing for Cryogenic Hydrogen Applications

  • For cryogenic hydrogen storage in aerospace applications, reliable mechanical characterisation at 20 K is indispensable. While testing at 77 K (liquid nitrogen) and 4 K (liquid helium) is well established, stand-ardised procedures in the temperature range relevant for liquid hydrogen are still lacking. This gap rep-resents a key challenge for materials development. A critical aspect is the accurate measurement of strain under extreme conditions: clip-on extensometers provide global yet contact-based data, whereas digital image correlation (DIC) enables non-contact, full-field strain acquisition. Using glass cryostats, DIC has been successfully applied at 4 K and 77 K, allowing the capture of high-resolution deformation fields. As a next step, a newly developed test rig is introduced, based on a helium circulation system. It enables not only isothermal testing down to 20 K but also programmable temperature profiles between 10 and 350 K, providing an essential opportunity to reproduceFor cryogenic hydrogen storage in aerospace applications, reliable mechanical characterisation at 20 K is indispensable. While testing at 77 K (liquid nitrogen) and 4 K (liquid helium) is well established, stand-ardised procedures in the temperature range relevant for liquid hydrogen are still lacking. This gap rep-resents a key challenge for materials development. A critical aspect is the accurate measurement of strain under extreme conditions: clip-on extensometers provide global yet contact-based data, whereas digital image correlation (DIC) enables non-contact, full-field strain acquisition. Using glass cryostats, DIC has been successfully applied at 4 K and 77 K, allowing the capture of high-resolution deformation fields. As a next step, a newly developed test rig is introduced, based on a helium circulation system. It enables not only isothermal testing down to 20 K but also programmable temperature profiles between 10 and 350 K, providing an essential opportunity to reproduce thermomechanical loading conditions close to service environments. An integrated observation window further allows direct measurement of the true stress–strain response. This opens the prospect of assessing materials under realistic cryogenic conditions in a reproducible and comparable manner.zeige mehrzeige weniger

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Metadaten
Autor*innen:Daniela SchobORCiD
Koautor*innen:Jakub TabinORCiD, Philipp MaaschORCiD
Dokumenttyp:Vortrag
Veröffentlichungsform:Präsentation
Sprache:Englisch
Jahr der Erstveröffentlichung:2025
Organisationseinheit der BAM:9 Komponentensicherheit
9 Komponentensicherheit / 9.6 Additive Fertigung metallischer Komponenten
DDC-Klassifikation:Technik, Medizin, angewandte Wissenschaften / Ingenieurwissenschaften / Ingenieurwissenschaften und zugeordnete Tätigkeiten
Freie Schlagwörter:Cryogenic material testing; Digital image correlation; Low cycle fatigue; Quasi-static
Themenfelder/Aktivitätsfelder der BAM:Material
Material / Additive Fertigung
Veranstaltung:DGM - 43. Werkstoffprüfung
Veranstaltungsort:Dresden, Germany
Beginndatum der Veranstaltung:27.11.2025
Enddatum der Veranstaltung:28.11.2025
Verfügbarkeit des Dokuments:Datei im Netzwerk der BAM verfügbar ("Closed Access")
Datum der Freischaltung:23.12.2025
Referierte Publikation:Nein
Eingeladener Vortrag (wissenschaftliche Konferenzen):Nein
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