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Cold welding under space and launch conditions

tarafından|2023-11-24T17:10:08+01:0023. Ekim 2023|Space|

A common failure mode seen during the testing and operation of spacecraft is termed ‘cold-welding’ (‘coldwelding’, ‘contact welding’, ‘adhesion’, ‘sticking’ or ‘stiction’). Coldwelding is a solid-state welding process in which joining takes place without fusion or heating at the interface of the two parts to be welded. This effect mainly concerns metal-to-metal contacts. It was first recognized as a general materials phenomenon in the 1940s: Clean, flat surfaces of metal might strongly adhere if brought [...]

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CronHard – Achieving Stress Corrosion Cracking Resistance in Bearing Steel

tarafından|2023-10-16T09:45:34+02:0016. Ekim 2023|Space|

Ball bearings are essential components in various mechanical systems, designed for their high hardness to ensure wear resistance and the ability to withstand high contact stresses. For many years, this design philosophy served well as long as traditional bearing configurations with predominantly compressive stresses were prevalent. Stress corrosion cracking (SCC) was not a significant concern in such setups. However, as the industry continues to evolve towards more efficient and lightweight integrated solutions, where bearings are [...]

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Coefficient of Moisture Expansion:
A challenging measurement task

tarafından|2024-01-26T13:06:59+01:0027. Eylül 2023|Space|

A high degree of dimensional stability is often required for aircraft and spacecraft components. In order to evaluate polymeric composite materials for aerospace applications the coefficients of thermal expansion (CTE) and moisture expansion (CME) have to be determined. Coefficient of Moisture Expansion (CME) is defined as the ratio of change in strain and mass variation due to the moisture desorption or absorption.  For the determination of the CME the change of length and the mass [...]

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A challenging measurement task için
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A Giant Leap in Space Exploration: Successfully Completing the Cubesat Bakeout and TVAC Tests

tarafından|2023-09-29T13:17:46+02:0013. Eylül 2023|Space|

In the ever-evolving realm of space exploration, every successful milestone brings us one step closer to unlocking the mysteries of the cosmos. Today, we are thrilled to share a remarkable achievement that signifies a significant leap forward in our space mission strategy. Our recent accomplishment in conducting the Bakeout and Thermal Vacuum Test TVAC for our Cubesat not only marks a momentous milestone but also reaffirms our commitment to pushing the boundaries of space exploration. [...]

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