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 Wood based panel testing ,Plywood,MDF ,Main test items and methods

Wood based panel testing is mainly to test the mechanical, physical, surface, appearance and other properties of all kinds of plates, and the testing items specified in the national standards that reflect the quality characteristics and use characteristics of plates.

 

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Main test items and methods:

Test items Project description Testing tools
Modulus of elasticity The ratio of stress and strain of a material due to load within the range of elastic deformation. It reflects the ability of materials to resist deformation caused by external forces. Universal mechanical testing machine, vernier caliper, micrometer, stopwatch
Static bending strength The ratio of bending moment and bending section modulus of the material under the maximum load. Reflect the ability of the material to resist bending failure. Universal mechanical testing machine, vernier caliper, micrometer, stopwatch
Internal bonding strength The ratio of the maximum load to the loaded area at the time of material failure under the tensile load of the vertical plate surface. Universal mechanical testing machine, special fixture, vernier caliper, stopwatch
Bonding strength The stress required for the failure of the interface between the adhesive and wood components or its adjacent parts. Universal mechanical testing machine, vernier caliper, water tank, drying oven
compressive strength The ratio of the maximum compressive load of the material to the loaded area of the material. Reflect the ability of the material to resist compression failure. Universal mechanical testing machine, vernier caliper, micrometer, stopwatch
tensile strength The ratio of the maximum tensile load of the material to the loaded area of the material. It reflects the ability of the material to resist tensile failure. Tensile testing machine, micrometer, stopwatch
shear strength The ratio of the maximum shear load of the material to the loaded area of the material. It reflects the ability of the material to resist shear failure. Universal mechanical testing machine, vernier caliper, stopwatch
Screw holding force Use the specified type of wood screw, screw it into the plate to a certain depth, and pull it out of the maximum tension required. It is divided into plate holding screw force and plate side holding screw force。 Universal mechanical testing machine, special fixture, bench drill
Uniformly distributed load The maximum deformation of the corresponding test point under the uniformly distributed load of the material (the load on each point is equal under the uniformly distributed load). Uniform load testing machine, special fixture, micrometer, stopwatch
Concentrated static load The load acting on a certain point of the material is called concentrated load. Concentrated load testing machine, special fixture, micrometer, stopwatch
Impact load Sudden load with fast loading speed and short action time. Impact load testing machine, special fixture, micrometer, stopwatch
Formaldehyde emission The formaldehyde content released by the material per unit mass. Metal support, water tank, spectrophotometer, balance, glassware, etc
Moisture content The ratio of the quality difference of the material before and after drying to the quality after drying. 天平、干燥箱、游标卡尺
Specification and size Basic geometric properties of wood-based panel, such as length, width and thickness。 Micrometer, steel tape, mechanical angle ruler, caliper, etc.
dimensional stability Dimensional stability refers to the ability of the plate size to remain relatively unchanged with the change of time and surrounding environment. Micrometer, steel tape, mechanical angle ruler, caliper, etc.
Surface roughness The degree of unevenness on the surface of the plate.  
Surface wear resistance The ability of the plate surface to resist wear. Specimen clamp, grinding wheel, rotary counter, dust collector
Boiling water resistance After the material is boiled in boiling water for 2h, check the mass and thickness increase of the test piece to see whether there is bubbling and delamination. Balance, micrometer, drying oven, container, specimen clamp, heating device
Impact resistance Impact the material surface with a certain quality of steel ball. Reflect the ability of the plate to resist impact load. Impact testing machine, steel ball, fixture, vernier caliper

 

 

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