标准号:  ASTM E290—14
英文标准名称:  Standard Test Methods for Bend Testing of Material for Ductility
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标准类型:  美国材料实验协会标准
发布日期:  null
实施日期:  2014-05-01
批准日期:  null
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标准状态:  现行有效
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摘要:  These test methods cover bend testing for ductility of materials. Included in the procedures are four conditions of constraint on the bent portion of the specimen; a guided-bend test using a mandrel or plunger of defined dimensions to force the mid-length of the specimen between two supports separated by a defined space; a semi-guided bend test in which the specimen is bent, while in contact with a mandrel, through a specified angle or to a specified inside radius (r) of curvature, measured while under the bending force; a free-bend test in which the ends of the specimen are brought toward each other, but in which no transverse force is applied to the bend itself and there is no contact of the concave inside surface of the bend with other material; a bend and flatten test, in which a transverse force is applied to the bend such that the legs make contact with each other over the length of the specimen.
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页数:  10