OSU - Glowbar Backplate Buckling issue

[CSaungsomboon-FTT]

Issue to document the problems with the OSU backplate. Issue was raised with Isovolta in Austria in 20/07/2023 service visit.

https://www.fire-testing.com/rate-of-heat-release-apparatus/

11315-000-1

[CSaungsomboon-FTT]

Plate buckling theory with stiffening solutions

Theory: https://byjus.com/physics/thermal-stress/ https://amesweb.info/StructuralAnalysisBeams/Thermal-Stress-Plate.aspx https://www.roymech.co.uk/Useful_Tables/Mechanics/Plates.html https://fgg-web.fgg.uni-lj.si/~/pmoze/esdep/master/wg08/l0100.htm https://fgg-web.fgg.uni-lj.si/~/pmoze/esdep/master/wg08/l0200.htm https://fgg-web.fgg.uni-lj.si/~/pmoze/esdep/master/wg08/l0300.htm

• Section 2.2.2 Fig 10.

Solutions: https://fgg-web.fgg.uni-lj.si/~/pmoze/esdep/master/wg08/l0300.htm https://www.wevolver.com/article/5-ways-to-strengthen-your-sheet-metal-parts

[CSaungsomboon-FTT]

OSU standard: E906-21.pdf

Selected mechanical requirements:

[CSaungsomboon-FTT]

Will change to 321 SS at 2mm thickness.

Will increase diameter of mounting holes from 7.5 to 9.5(?), Will retain diameter of 4x mounting holes for positioning

[CSaungsomboon-FTT]