NEWS 15 December 2024

Working with LEM and FEM for mitigating thermal drift

The phenomenon of thermal drift compromises precision as a result of thermal expansion or contraction of components, caused by small variations in temperature.

Various mitigation strategies exist to minimise the effect of thermal drift on precision. Through modelling of thermal systems, the magnitude of thermal drift and the effectiveness of mitigation strategies can be predicted, using for example the lumped-element method (LEM) or the finite-element method (FEM), as described in this Mikroniek article. (Image courtesy of Demcon multiphysics)

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References

A flexible way to reflect…

The W.M. Keck Observatory telescopes on Hawaii are receiving upgrades that include an Adaptive Secondary Mirror (ASM) and the Keck Wide Field Imager (KWFI).

AI-driven visual inspection of photonic…

In the rapidly evolving field of photonics, the integrity of photonic wafers is paramount to the performance and reliability of optical devices.

Designing better with additive manufacturing

In the area of precision engineering – where tolerances are measured in microns or even nanometers – additive manufacturing (AM) offers a new level of possibility.