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MILITARY COMPOSITE PRODUCTS
Amalga Composites, Inc. is the leader in the development and manufacture of advanced composite products for defense applications. These products are built to the customer’s specifications and ACI has systems in place to control product configuration through each process.
Defense Fabricated Tubing
- Fabricated from any commercially available reinforcement
- Circular, rectangular, hexagonal or elliptical cross sections
- Designed and engineered to meet specific requirements:
- Stiffness
- Strength
- Weight reduction
- Impact resistance
- Conductivity
- Vibration/natural frequency
| Property | E-glass | Commercial Carbon | Intermediate Modulus | High Modulus |
|---|---|---|---|---|
| Flexural Modulus (psi) | 5,500,000 | 16,000,000 | 22,000,000 | 30,000,000 |
| Tensile Strength (psi) | 115,000 | 130,000 | 140,000 | 140,000 |
| Compressive Strength (psi) | 57,000 | 130,000 | 47,000 | 47,000 |
| Shear Modulus (psi) | 800,000 | 800,000 | 800,000 | 800,000 |
| Shear Strength (psi) | 8,000 | 8,000 | 8,000 | 8,000 |
| CTE (in/in/°F) | 4.8 | 0.17 | -43.6 | -43.6 |
| Poissons ratio (NUyx) | .27 | 0.33 | 0.069 | 0.070 |
| Density (Pound/cubic inch) | 0.072 | 0.058 | 0.058 | 0.058 |
Engineering Capability
- Structural Analysis
- Laminate Analysis
- Solid Modeling
- Critical Speed/Natural Frequency Analysis
- Buckling Stress Analysis
- Joining Analysis
- Material Selection
Stiffness Comparison
- Filament wound composites can be fabricated to match the stiffness of traditional materials
- Filament wound composites offer the advantage of customizing stiffness by varying both the type of fiber and the angle of the reinforcement
The Effect of Wind Angle on Stiffness
- The stiffness of a composite structure is controlled by the orientation of the reinforcing fibers
- The design engineer must understand the requirements of the application to properly design the filament wound structure
Ultimate Tensile Strength Comparison
- Filament wound composites exhibit superior strength
- They do not yield or plastically deform the way that metal does
- Filament wound composites offer the advantage of customizing strength by varying both the type of fiber and the angle of the reinforcement
The Effect of Wind Angle on Strength
- As with stiffness, the strength of a composite structure is also controlled by the orientation of the reinforcing fibers
- The design engineer must understand the requirements of the application to properly design the filament wound structure
