Puncture Fixtures
Overview of Puncture Fixtures
Puncture fixtures are precision testing tools designed to evaluate the resistance of materials to puncture or penetration. These fixtures typically utilize a sharp or blunt piercing implement, such as a plunger, needle, or ball, to burst through a sample specimen under controlled conditions. While commonly used with flexible materials like fabrics, puncture fixtures are versatile and can accommodate a wide range of materials, including packaging plastics, films, composites, and even sheet metals.
Key Characteristics of Puncture Fixtures
- Hole Opening: The diameter of the hole opening is critical, as different ASTM standards—such as ASTM F1306 (for flexible barrier materials) or ASTM D4822 (for puncture resistance in plastic films)—specify unique requirements.
- Puncture Implement: This component, often referred to as the plunger, needle, or ball, varies based on the testing standard. For example, ASTM D3787 uses a ball-shaped implement for evaluating fabric puncture resistance.
- Adapter Compatibility: Most puncture fixtures feature a standard 5/8" adapter for seamless integration with universal testing machines. However, custom fixtures can be machined to meet specific testing needs, including larger or more robust designs for high-force applications.
Whether you're testing packaging materials for durability or evaluating the structural integrity of metal sheets, puncture fixtures provide reliable and repeatable results for a variety of applications.
