Calculation of bending performance 1. Calculation of bending performance
1) Calculation of bending strength:
Tt=3PL/2bh2
Where: бt—bending strength, MPa; P—bending load on the specimen, MN; L-span, mm;
B-sample width, mm; h-sample thickness, mm.
2) Calculation of flexural modulus:
Et=(L3/4bh3)(P/Y)
Where: Et-bending elastic modulus, MPa; L-span, mm; b-sample width, mm; h-sample thickness, mm;
P-load at the linear portion of the load-deflection curve, N; Y-load corresponding deflection, mm.
3. Influencing factors of test results
The state adjustment of the sample, the test environment, and the bending speed have a certain influence on the bending performance. In addition, the measurement of the sample size, the adjustment of the test span, the line contact and vertical condition of the indenter and the sample, and the adjustment of the zero point of the deflection value all have certain influence on the test results.
4. Unit
The unit of bending strength is MPa, and the unit of bending elastic modulus is MPa or GPa.
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