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Multi-axial extensograph and using method thereof

A tensile tester and tensile strength technology, which is applied in the field of mechanical testing instruments for polymer materials to achieve the effect of easy operation.

Active Publication Date: 2011-05-11
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

The technical problem to be solved is to use high-pressure air to inflate the sample until it explodes, and measure the maximum pressure the sample can withstand and the deformation of the sample when it ruptures

Method used

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  • Multi-axial extensograph and using method thereof

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Embodiment Construction

[0031] The multi-axis extensometer of the present invention is composed of a pressure vessel and a deviation chamber, which are connected by flanges. The lower part is a pressure vessel, which is welded with the flange and equipped with a pressure gauge and an air inlet. The upper part is divided into a deviation chamber, and is equipped with devices such as a height gauge and an exhaust port. in:

[0032] Pressure vessel: It is processed by the head of the reactor and can withstand a pressure of at least 2.0MPa. The edge is welded to the flange, and the air inlet and pressure gauge are also welded to the pressure vessel at the same time. All welds must not leak air, so as not to keep teeth during the experiment.

[0033] Deviation chamber: The function is to buffer the huge impact force after the sample is blasted, and protect the safety of the experimenters and surrounding instruments. The deviation chamber is welded with the flange, the height gauge, and the exhaust port ...

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Abstract

The invention discloses a multi-axial extensograph and a using method thereof. The multi-axial extensograph is used for measuring tensile strength of a geomembrane, and is characterized by comprising a lower pressure vessel and an upper deviation chamber, wherein the pressure vessel is connected with the deviation chamber by using a flange; and a sample to be tested is pressed and fixed between the pressure vessel and the flange of the deviation chamber. In the multi-axial extensograph, the sample is blown up by using high pressure air until the sample is blown out, and the maximum pressure that the sample can bear and deformation during fracture of the sample can be measured. The multi-axial extensograph is easy to use, and is safe and reliable.

Description

technical field [0001] The invention relates to a test instrument, in particular to an instrument suitable for mechanical testing of polymer materials and a method for using the same. Background technique [0002] For the two standards GB / T 17643 and CJ / T 234 on material performance testing, the multiaxial tensile test method has been added. Its essence is to directly translate ASTM D1388-96 into a new domestic standard. [0003] There are some brief descriptions in ASTM D1388-96: [0004] Experimental principle: By applying pressure to the prepared sample fixed on the edge of a specific pressure vessel, and causing its outer layer to deform and destroy, the pressure and deformation data are obtained. [0005] Standard pressure vessel: This vessel is matched with a multi-axis pressure gauge, and its minimum pressure rating is 690kpa; its diameter is 600mm. Other small containers can also be used, but must first establish a relationship with the standard container. [000...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/12G01N3/06
Inventor 邢进俞峰刘玉春
Owner CHINA PETROLEUM & CHEM CORP
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