Kalkulating thee Vickers Hardness Number: Step-by@-@ step Procedura i Practical Egzaminy

Te Vickers Hardness Number (VHN) is a mearurement used te hardness of materials, especially metals and alloys. It is calculated based on thee size of an indentation made by a diamond- shaped indenter undeir a specific load. This article provides a clear, ste- step guido calcatating the VHN, along with practival examples.

Zrozumiałe, że Vickers Hardness Teszt

Te Vickers tect involves pressing a diamond piramida-shaped indenter into thee material surface with a known load. The size of thee resucting indentation is measured te material 's hardness. The VHN is calculated using a standardzed formula that relates thee load ande the indentation' s surface area.

Etap-by@-@ step Kalkulacja Procedura

Follow these steps to calculate thee Vickers Hardness Number:

• Mierzy się długość tego przekątnej tego indentation (d) in milimetrów.
• Obliczyć te powierzchnie są a of te indentation using thee formula: Area = 0.1887 × d ².
• Use thee standard formula for VHN: VHN = (2 × F) / (d ²), where F is thee applied load in kilograms- force (kgf).
• Adjuszt thee formula to include thee surface area: VHN = (1.854 × F) / (d ²).

Praktyka Badanie

Suppose a load of 0.5 kgf is applied, and the measured diagonal of thee indentation is 0.02 mm. The calculation proceeds as follows:

Oblicz te powierzchnie area: Area = 0,1887 × (0,02) ² = 0,00007548 mm2.

Obliczenie VHN: VHN = (1,854 × 0,5) / (0,02) ² = (0,927) / 0,0004 = 2317,5.

Dodatek Tips

Ensure circulate measurement of the indentation diagonal for precise results. Use a microscope or a high- magnification lens to measure thee diagonal length. Repeat thee tett multiple times for consistency.