Geometric qhov tseeb ntawm txoj kab qhia kev tsheb ciav hlau suav nrog kev ncaj ntawm cov lus qhia kev tsheb nqaj hlau ntawm ntsug nto thiab kab rov tav. Cov ntsiab lus tseem ceeb cuam tshuam rau qhov raug ntawm cov kab ntawv qhia kev tsheb ciav hlau tau sau tseg raws li hauv qab no.
1. Ncaj nraim ntawm cov kab qhia kev tsheb nqaj hlau
Ncaj qha cuam tshuam rau kev sib luag ntawm cov kev taw qhia kev tsheb ciav hlau nto thiab qhov ntsug ntawm txoj kev taw qhia.
2. Kev nruj ntawm cov kab qhia kev tsheb ciav hlau
Tiv tauj deformation, lub zos deformation thiab nws tus kheej-deformation yuav tshwm sim thaum cov kev taw qhia rail yog stressed. Kev sib cuag deformation yog tshwm sim los ntawm microscopic inhomogeneity ntawm cov lus qhia rail dav hlau. Hauv zos deformation feem ntau tshwm sim qhov twg qhov kev ntxhov siab yog concentrated. Lub deformation ntawm phau ntawv qhia kev tsheb nqaj hlau nws tus kheej yog tag nrho cov deformation ntawm cov kev taw qhia rail nyob rau hauv sab nraud load, uas muaj feem xyuam rau cov khoom thiab layout ntawm cov kev taw qhia rail.
3. Nto roughness ntawm linear qhia rail
Feem ntau yog nyob ntawm cov khoom siv, hardness thiab kev sib tsoo txheej txheem ntawm kev qhia rail.
4. Hom qauv ntawm cov kab qhia kev tsheb ciav hlau
Ncaj qha cuam tshuam rau qhov chaw qhov tseeb thiab qhov ntsuas qhov tseeb ntawm cov cuab yeej siv tshuab.
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