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Fine dried noodles elasticity modulus measuring method based on pressure lever post-buckling

A technology of elastic modulus and measurement method, which is applied in the direction of testing the hardness of materials, etc., can solve the problems of low measurement accuracy of elastic modulus of dried noodles and difficult control of measurement parameter settings, and achieve the effects of scientific measurement, high testing accuracy and simple measurement process

Inactive Publication Date: 2009-09-09
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a simple and easy-to-operate method for measuring the elastic modulus of dried noodles based on the post-buckling of the compression bar in order to solve the deficiencies in the current prior art that the measurement accuracy of the elastic modulus of the dried noodles is low and the setting of the measurement parameters is difficult to control.

Method used

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  • Fine dried noodles elasticity modulus measuring method based on pressure lever post-buckling
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  • Fine dried noodles elasticity modulus measuring method based on pressure lever post-buckling

Examples

Experimental program
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Effect test

Embodiment 1

[0029] The measuring method of elastic modulus of vermicelli 3 length is 180mm, randomly extracts 20 vermicelli, cuts into 180mm, places respectively between static pressure head 2 and dynamic pressure head 4; Driven by the boom 6, the vermicelli 3 is compressed and loaded, the compression amount of the dynamic pressure head 4 is 1.4mm (the rotation angle at the end of the deflection line is 10°), and the speed of the dynamic pressure head 4 is 0.01mm / s. From the test data recorded by the loading device, the compression of the dynamic pressure head 4 is extracted as the pressure value of 1.4mm, and the compression value of the pressure value and the noodles 3 basic parameters and the compression of the dynamic pressure head 4 in Table 1 are 1.4mm (the end of the deflection line) Rotation angle is 10°) corresponding parameters 1.5738 was substituted into the elastic modulus calculation formula, and the average elastic modulus of 20 dried noodles was calculated.

Embodiment 2

[0031] The measuring method of elastic modulus of vermicelli 3 length is 180mm, randomly extracts 20 vermicelli, cuts into 180mm, places respectively between static pressure head 2 and dynamic pressure head 4; Driven by the boom 6, the vermicelli 3 is compressed and loaded, the compression amount of the dynamic pressure head 4 is 3.1 mm (15° at the end of the deflection line), and the speed of the dynamic pressure head 4 is 0.01 mm / s. Extract the pressure value when the compression amount is 3.1 mm from the test data recorded by the loading device, and calculate the pressure value and the 3 basic parameters of the noodles and the compression amount of the dynamic pressure head 4 in Table 1 as 3.1 mm (15° at the end of the deflection line). Corresponding parameters Substitute 1.5776 into the elastic modulus calculation formula to calculate the average elastic modulus of 20 dried noodles.

Embodiment 3

[0033] The measuring method of elastic modulus of vermicelli 3 length is 180mm, randomly extracts 20 vermicelli, cuts into 180mm, places respectively between static pressure head 2 and dynamic pressure head 4; Driven by the boom 6, the vermicelli 3 is compressed and loaded, the compression amount of the dynamic pressure head 4 is 5.4mm (the end of the deflection line is 20°), and the speed of the dynamic pressure head 4 is 0.01mm / s. Extract the pressure value when the compression amount is 5.4mm from the test data recorded by the loading device, and combine the pressure value with the noodle 3 basic parameters and the compression amount of the dynamic pressure head 4 in Table 1 to be 5.4mm (the rotation angle at the end of the deflection line is 20°) Corresponding parameters 1.5828 was substituted into the elastic modulus calculation formula, and the average elastic modulus of 20 dried noodles was calculated.

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Abstract

The invention discloses a fine dried noodle elasticity modulus measuring method based on pressure lever post-buckling. A load measuring device is installed firstly, a static pressure head of the load measuring device is fixed on a base, a force sensor is arranged on a movable arm of the load measuring device, and then a dynamic pressure head is fixedly connected with the force sensor; a certain number of fine dried noodles cut to have corresponding length are respectively arranged between the static pressure head and the dynamic pressure head; and the amount of movement of the dynamic pressure head is determined according to the length of the fine dried noodle and an set intersection angle of the end part of a twisted curve, then the load measuring device is started again, the dynamic pressure head is driven by the load measuring device to load the fine dried noodles in a speed of 0.01mm / s, load corresponding to the amount of movement of the dynamic pressure head is measured by the load measuring device, and at last the fine dried noodle elasticity modulus is counted by a formula relationship. The invention uses pressure lever stability principle and large deflection theory of mechanics of materials to establish the relationship of axial compression, the end part intersection angle and pressure, establishes a counting method of the fine dried noodle elasticity modulus, has simple and convenient measuring method and high precision, and can control the length of the fine dried noodle elasticity modulus to be between 60 mm and 220mm.

Description

technical field [0001] The invention relates to a method for measuring the mechanical properties of dried noodles, belonging to the field of mechanical detection of dried noodles, in particular to a method for measuring the elastic modulus of dried noodles. Background technique [0002] The elastic modulus of dried noodles is one of the main indicators for quality evaluation of dried noodles and is an inherent property of dried noodles. The elastic modulus of dried noodles is generally measured by the three-point bending method in engineering mechanics, and it is also measured by the stretching method. However, the three-point bending method has great limitations, such as being affected by the weight of the dried noodles, the span of the support point It cannot be very large. When the three-point bending deformation is performed under a certain span condition, the deformation length of the vermicelli is greater than the span of the two support points. The amount calculation...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/42
Inventor 姜松朱红力陈章耀蔡健荣赵杰文
Owner JIANGSU UNIV
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