Improvement of the friction behaviour of NiTi orthodontic archwires by nitrogen diffusion

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Rapid Formation and Testing of Self-expanding NiTi Frames with a Small Form Factor Suitable for Minimally Invasive Implants
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Rapid Formation and Testing of Self-expanding NiTi Frames with a Small Form Factor Suitable for Minimally Invasive Implants

Published on: March 7, 2025

F J Gil1, E Solano, A Campos

  • 1Dept. C. Materiales e Ingeniería Metalurgica, ETSEIB, Universidad Politécnica de Cataluña, Barcelona, Spain. gil@cmem.upc.es

Bio-Medical Materials and Engineering
|March 19, 1999
PubMed

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Thermal expansion and Thermal stress: Problem Solving01:27

Thermal expansion and Thermal stress: Problem Solving

San Francisco's Golden Gate Bridge is exposed to temperatures ranging from -15 °C to 40 °C. At its coldest, the main span of the bridge is 1275 m long. Assuming that the bridge is made entirely of steel, what is the change in its length between these temperatures?
To solve the problem, first, identify the known and unknown quantities. The initial length (L) of the bridge is 1275 m, the coefficient of linear expansion (α) for steel is 12 x 10-6/°C, and the change in temperature (ΔT) is 55 °C.