GB/T 235-2013Metallic materials -- Sheet and strip -- Reverse bend test (English PDF)

GB/T 235-2013 is the English-translated version of 金属材料 薄板和薄带 反复弯曲试验方法.

GB/T 235-2013 — This standard specifies the metal sheet and strip repeated bending test method principles, symbols, test equipment, samples, test procedures and test report.

This standard applies to a thickness equal to or less than 3mm metal sheet and strip - Determination of plastic deformation repeated bending. 2 Symbols and Symbols used in this standard and their descriptions are shown in Table 1.

Table 1 Symbols and Symbol Description Unit a specimen thickness mm r cylindrical support roll radius mm L cylindrical support rollers top to bottom lever distance mm y two cylindrical support roll axis to the plane of the top surface of the clamp block distance mm w lever slit width mm T N tension Nb the number of repetitive bending times Principle 3 Repeated bending test is a rectangular cross-sectional sample of interviews with one end fixed, predetermined radius around a cylindrical support roll bending 90 °, then bent in the opposite direction Repeated bending test song, as shown in Figure 1.

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 5 pages — is available in the English PDF.

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