Introduction:
A test method called ASTM D4018 describes how to prepare and test consolidated test specimens constructed from continuous filament carbon and graphite yarns, rovings, and tows for their tensile characteristics. In order to offer additional information for the computation of tensile properties, it also covers the determination of the density and mass per unit length of the yarn, roving, or tow.
The ASTM D4018 test procedures are designed to test fibers that have been developed specifically for use as reinforcing agents in advanced composite structures. Composite materials made from fiber tows and resin are eventually used in aerospace, automotive, and industrial applications.
Standards:
ASTM D 4018
NFPA 1971
GB 8965.1-2009
Feature:
1. A frame made of attractive, corrosion-resistant, and easily-cleanable stainless steel;
2. A set of radiant heat sources and two 45-degree convection heat sources make up the heat source composition. Nine T-150 infrared quartz bulbs make up the radiant heat source. Two mike lamps make up the convection heating source.
3. Comes with a detachable stainless steel protection plate to ensure the test procedure' dependability and safety;
4. The sample fixture assembly, the flame-throwing head radiant heat source, the water-cooled shutter sensor, the data acquisition system, the fuel control regulator, and the gas rotary flowmeter are the fundamental parts of the thermal protection performance instrument;
5. Two Meker burners set to a 45-degree angle.
6. The inner pipe has a diameter of 38 mm, and the inner hole has a diameter of 5/16 inches. This allows for a heat output of 800-1200 BUT. The lower portion of the burner has an air valve that can be adjusted to control the air and combustible gas flow. The burner port is a metal mesh construction. The dilution ratio
7. Nine T150 quartz infrared tube arrays with a 13 kW/m2 4 kW/m2 thermal radiation flux.
8. By adjusting the gas supplied to the Meker burner, the total heat flux can be set to 83kW/m2 to 2kW/m2 under the heat radiation of the quartz infrared tube.