There are multiple definitions:

1. veiligheid management systeem(Dutch)

   • NFU, NVZ, VIM
   • Safety and health

2. Vereniging Medische Staf(Dutch)

   • Organizations (clinical)

3. von Mises stress(English)

   • provides a measure of the shear, or distortional, stress in a material. This type of stress tends to cause yielding in metals. It is independent of the amount of hydrostatic stress (s1= s2= s3) action on the material. It is identified in terms of the principal stresses as Ö1/2[(s1- s2)2+( s1- s3)2+( s2- s3)2]
   • CF, CFR, CFR-PEEK, PEEK, FPS, VM, mvM
   • Materials science, Biophysics, Dentistry, Prosthetics, Knee
   • https://docs.cs…ises_stress.htm
   • https://doi.org…3018-017-0541-z
   • https://doi.org…/JCD.JCD_471_20
   • https://doi.org…42.2022.2032681