Fast Thermal cycling

Leider ist der Eintrag nur auf Amerikanisches Englisch verfüg­bar. Der Inhalt wird unten in einer verfüg­baren Sprache angezeigt. Klicken Sie auf den Link, um die aktuelle Sprache zu ändern.

Space and aerospace materials can be exposed to repeated and rapid temperature changes; for example by change of sun irradiation (e.g. spinning in earth orbit), or to severe working conditions in atmosphere (e.g. engine components).

fast thermal cyclingThe fast thermal cycling test is used for the screen­ing of mater­i­als and compon­ents desig­nated for use under severe thermal condi­tions. Extreme temper­at­ures from –180 to +500 °C, and fast temper­at­ure changes with several 10 K/min, can be tested in vari­ous atmo­spheres (vacuum, air, other gases).

Post exam­in­a­tion (SEM-, LO-micro­scopy, NDT) and vari­ous other invest­ig­a­tions like mech­an­ical or elec­trical tests can be carried out.

Fast Thermal Cycling Facility Characteristics

Typical temper­at­ure cycles

Temperature extremes: –170 °C to +500 °C (+/- 5 °C)
Heating and cool­ing rates: 70 °C/min +/- 2 °C/min
Dwell times at temper­at­ure extremes: 5 +/- 5 min
Number of cycles: 100 to 1,000
Max. speci­men size (examples): 100 mm x 100 mm x 3 mm, 5 pieces
8 mm x 10 mm x 100 mm, 5 pieces
8 mm x 39 mm x 100 mm, 1 piece