[[TitleIndustry]]

Bending strength

Date:Nov 08, 2019

Bending strength

From RainbowTPU


For TPU materials, bending strength is an important index to evaluate the flexural properties.The specimen is placed on the support, and the pressure head is applied to the specimen at a certain rate in the middle position of the support. The maximum bending stress of the specimen when the deformation (the distance between the top or bottom surface of the center of the curved span from the original position) is specified, that is, the bending strength, as shown in the figure.The length of the standard specimen specified in GB 9341 is 80~ 100mm, and the width is (10.0±0.5).M, thickness (4.0 + / - 0.Non-standard samples are also available, but the dimensions are subject to certain requirements. During the test, the span is generally 16 times the thickness of the sample, and the speed of the standard sample is

图片


The calculation formula of bending strength is

图片

Where,P is the bending load borne by the pattern (the load or failure load when the specified deflection is equal to 1.5 times the thickness of the sample, and the maximum load),N; L is the span, mm; B is style width,mm; H is the style thickness。



Previous: TPU film compared with other plastic materials is very worthy of praise!

Next: The problems of TPU film processing