Method for testing bursting strength of small-mesh fishing net

A test method and small mesh technology, applied in the direction of applying stable tension/pressure to test the strength of materials, measuring devices, strength characteristics, etc., can solve hidden dangers in fishery production, restrict the sustainable and healthy development of fishing and fishery engineering, and cannot detect small Mesh fishing net bursting strength and other issues, to achieve the effect of reasonable and reliable technical indicators, practical test methods

Inactive Publication Date: 2006-10-04
EAST CHINA SEA FISHERIES RES INST CHINESE ACAD OF FISHERY SCI
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Problems solved by technology

However, the test method specified in the GB / T4925 standard cannot detect the bursting strength of small-mesh fishing nets, which not only brings serious hidden dangers to fishery production, but also restricts the sustainable and healthy development of fishing and fishery engineering.

Method used

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  • Method for testing bursting strength of small-mesh fishing net
  • Method for testing bursting strength of small-mesh fishing net
  • Method for testing bursting strength of small-mesh fishing net

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Embodiment Construction

[0012] The factors that affect the results of the fishing net strength test include atmospheric conditions, test conditions, sampling and sample handling, test methods, data processing and result presentation. In order to prevent and avoid deviations and obtain accurate evaluation results, while explaining the specific test methods, the following describes the best ways to implement the present invention with respect to various factors affecting the expression of the fishing net strength test results:

[0013] The atmospheric conditions for the test are set according to the moisture absorption performance of the fishing net material. For fishing nets made of hygroscopic materials such as nylon fishing nets and vinylon fishing nets, the atmospheric conditions in the laboratory during the bursting strength test are (20±1)℃, Humidity (63~67)%, the balance time of the fishing net sample is more than 12h; fishing nets made of non-hygroscopic materials such as polyethylene fishing nets ...

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Abstract

The testing scheme on bursting strength of small-mesh fishing net comprises: assembling a ring clamper and column-top compression bar on the tester, fixing the sample smoothly in the clamper; adjusting the falling speed of bar with the average failure time as 20+-3s to let the bar vertical prop toward the sample till showing the maximal pressure and the corresponding distance on tester.

Description

Technical field [0001] The invention relates to a method for testing the physical properties of a fishing net. Background technique [0002] Mesh is one of the important materials in fishery production. Nets are required for all kinds of nets for marine fishing or freshwater fishing, as well as for sea and freshwater aquaculture nets and fences in lakes and reservoirs. Meshes are divided into two categories: knotted meshes and non-knotted meshes. Knotted meshes are divided into slip knot meshes, dead knotted meshes, and double dead knotted meshes; knotless meshes are divided into warp knitted meshes, twisted meshes, plain weave meshes, and twisted twisted meshes. The above-mentioned various nets have been widely used in the fishing and breeding projects of my country's fishery production. Since the successful development of warp-knitted mesh in China around 1985, compared with knotted mesh, warp-knitted mesh has stable mesh size, compact mesh structure, light weight, low cost, an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/08G01N3/04
Inventor 石建高汤振明王鲁民柴秀芳
Owner EAST CHINA SEA FISHERIES RES INST CHINESE ACAD OF FISHERY SCI
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