Composite material compression test and the gap in the compression test
The fiber reinforced composite materials have a variety of applications, such as snowboarding, cars, wind turbines, dental implants and glider.In addition to the material light weight, but also has high strength and stiffness, is ideal for light weight applications.Fiber reinforced composite materials are usually consists of two main components, the interaction between the two components that have a decisive influence on special properties of the material.Therefore, in terms of compressive strength, safety and reliable material testing for composite material is extremely important.Composite materialsThe compression test and gap compression testNo matter in terms of specimen preparation, or in performing the test is very challenging.Our compression test for composite materials and gap compression test test equipment is very suitable for this purpose.
Test method for an overview ofCompression testGaps in the compression testComposite material manual
Compression test, test method and test standard
In different directions when the applied load, the composite material can appear very different failure modes.Fiber direction on the compressive strength is usually much lower than the corresponding tensile strength, so the compressive strength are often more critical design features to represent values.Compression test对表征材料性能（如单向层压板、织物和纤维以及多向层压板的压缩模量和抗压强度等）起着重要作用，因此对于复合材料的力学测试来说十分重要。
There are manyTest method and test standardAvailable, they areThree kinds of load applied principleTo distinguish between:
- Conform to theASTM D695, DIN EN 2850 B or BSS Boeing 7260 III and IVThe standardTransverse load compression test
- Conform to theISO 14126 method 1, ASTM D3410 or DIN EN 2850 A typeThe standardShear load compression test
- Conform to theISO 14126 method 2, ASTM D6641 and airbus AITM 1.0008The standardCombined load compression test
The compression test for composite material specimen preparation, test personnel and test technology are put forward very high requirements.In the process of the laminate applied load, must avoid the peak stress and bending deformation, to determine the real compression feature.In order to detect superimposed bending deformation, many compression test standards on both sides of the direction of the load to strain measurement, measurement tools in common use is strain gauge.