Photoelastic tester for particulate matters

A technology of particulate matter and test instrument, which is applied in instruments, scientific instruments, and measurement of force by measuring the change of optical properties of materials when they are stressed. , the effect of high promotion value and broad market prospects

Active Publication Date: 2012-06-13
TSINGHUA UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] At the same time, there is no relevant report on the photoelastic tester for particulate matter in China.

Method used

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  • Photoelastic tester for particulate matters
  • Photoelastic tester for particulate matters
  • Photoelastic tester for particulate matters

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Embodiment Construction

[0018] The present invention will be described in further detail below with reference to the accompanying drawings and embodiments.

[0019] like figure 1 and image 3 As shown, the present invention is a photoelastic tester for particulate matter, including a cabinet 1, on which is a bearing frame 2, the bearing frame 2 consists of an upper steel plate 21, a lower steel plate 22, a left steel plate 23 and a right vertical column 15 Composition, one end of the upper steel plate 21 and one end of the lower steel plate 22 are connected to the left steel plate 23, the other end of the upper steel plate 21 and the other end of the lower steel plate 22 are connected to the vertical cylinder 15, and the upper steel plate 21 and the left steel plate 23 are connected with the loading steel plate 8. Consistently dimensioned openings 24. A horizontal sliding bracket 3 is fixedly connected to the bearing frame 2 , and the horizontal sliding bracket 3 is supported by a steel column 5 wi...

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Abstract

The invention discloses a photoelastic tester for particulate matters. A carrying framework is arranged on a cabinet; a horizontal sliding bracket is fixedly connected to the carrying framework, and is supported by a steel column with a roller; a light source for emitting parallel light rays is arranged on the horizontal sliding bracket; a particulate container case is arranged in the carrying framework; two side faces of the particulate container case, which are vertical to the parallel light rays, are glass plates; a loading steel plate is arranged in the particulate container case; a slot,of which the size is the same as that of the loading steel plate, is formed in the particulate container case; the loading steel plate can freely get in or get out of the particulate container case through the slot; a horizontal steel tube with a slit is fixed on the carrying framework; a vertical steel tube is clamped and slide in the slit of the horizontal steel tube; a polariscope is fixed on the vertical steel tube; the mirror surface of the polariscope is parallel to the glass plates; the photoelastic tester also comprises a camera device which is opposite to the light source; and the carrying framework is arranged between the camera device and the light source. The photoelastic tester can track macroscopic physical quantities, such as force, displacement and the like, in real time, and comprehensively observing a mechanics performance test on the particulate matters.

Description

technical field [0001] The invention relates to the test of the mechanical properties of granules, in particular to a photoelasticity tester for granules. Background technique [0002] Particulate matter is a complex system composed of a large number of discrete solid particles interacting with each other, which is widely found in nature, such as rockfill bodies, damming bodies and debris flows. In the past 20 years, from the basic physical level, the study of the equilibrium and motion laws of particulate matter systems and their applications has gradually become a new branch of mechanics - particle mechanics. [0003] The contact between particles forms a number of force chains with different strengths. According to whether the force chain is greater than the average contact force, the force chain is divided into two types: strong chain and weak force chain. Although the number of strong chains is small, they support most of the weight of the particle system. The amazing...

Claims

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Application Information

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IPC IPC(8): G01L1/24G01N3/00
Inventor 毕忠伟孙其诚金峰刘建国张楚汉
Owner TSINGHUA UNIV
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