拉伸试验 of composites to ASTM D3039 determines the ultimate tensile strength, 极限拉伸应变, tensile chord modulus of elasticity and Poisson’s ratio of Polymer Matrix Composites (PMCs). The use of PMCs has become popular over a wide range of industries due to the material’s lightweight and more durable nature.
拉伸试验 of composites
Composites are directional and differ from materials like metals and plastics, so measuring the directional properties is a crucial step in understanding material performance. 传统上, 拉伸测试 were designed for other materials and couldn’t accurately measure the strength of PMCs, so the ASTM D3039 specification was born.
Exposing PMCs to temperature and humidity is an important step in understanding how the materials will perform in their intended environment. After being exposed to environmental factors, the material is brought to equilibrium and then tested to the ASTM D3039标准. The test introduces a specified load to the sample in a uniform manner and evaluates the material’s reaction. ASTM D3039 is critical to understanding the durability of your PMC and developing an overall safer product.
Applications of PMC tensile testing
The ASTM D3039 specification is the most popular tensile testing standard for continuous high modulus, reinforced polymer matrix composites. These composites are made of polymeric materials that contain reinforcing fibers (carbon or aramid) and matrix materials, 比如环氧树脂, 双马来酰亚胺(bmi指数), 聚酰胺, and thermoplastics such as PEEK.
Composite fiber overwrap applications
Another use for ASTM D3039 is as a quality control tool for composite fiber overwrap applications or fiber-reinforced composite materials. Composite fiber overwraps are applied and cured as additional reinforcement for concrete columns in earthquake zones. ASTM D3039 tests the tensile strength of the application to provide evidence that the column has been reinforced to the standards of the manufacturer.
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