The Fire Test

There is a mountain of dough, but you do not know what it is? This is particularly important to understand if it is necessary to dye the fabric, as many dyes are very specific to the type of fiber they are dyed. Therefore, if asking which dye to use, fiber content will be the first question. One way to find out is to run a burn test. Depending on the way the fiber burns (or dissolves), the smell when burned, and the type of ash and other residue left behind, you get clues about the type of fiber you provide.

Safety precautions need to be taken before carrying out the burn test. Especially when testing synthetic materials, always work in a well-ventilated place. Please use metal tweezers or pliers and hold the burning cloth and prepare a convenient fire extinguishing agent in case of emergency. Other advice: 1) Do not use sinusitis or cold problems, do not use fuels with strong fuel smells or refillable writers. Disposable lighters are most effective. This is a basic guide

After the flame has disappeared, it can ignite and burn quickly, and can emit a burning shine. Smoke is white or light, it smells like burnt paper and leaves. Gray is light gray or white, very soft

Burn slowly, shrink it or bend it away from the flame. The flame does not keep on even after it is removed. Smoke hardly occurs, but it smells like burnt hair (wool) and feathers (silk). Ash is a tough powder or dark crisp, easy grinding beads

It ignites and burns immediately, and it keeps burning even after the flame has been removed - be careful when exercising. The fiber shrinks from the flame, melts, drips (danger), so hard plastic beads remain. Burning these cloths produces black smoke and harmful fumes. Nylon smells like plastic when it is burned, but it also produces a smell like celery; acrylic burns with a strong chemical smell of strong stimulation. Polyester has a somewhat sweet taste due to its chemical smell

A series of fire tests were conducted at Phoenix, Arizona, and data on projects predicting feasibility of structural collapse was collected. The fire test scenario was selected as part of the training video prepared by the Phoenix Fire Department in Arizona. Multiple fires occurred in each structure to promote collapse; the fire was not intended to test the fire resistance of the structure. For the fire test, we used four structures with different roof structures. Temperature is measured as a function of time at four locations within each structure. Furniture items are placed on the front and back of each structure to simulate the living room and bedroom area. The living room and the bedroom of each building are ignited at the same time in an electrical matchup. The peak temperature obtained during the test ranged from about 800 ° C (1500 ° F) to 1000 ° C (1800 ° F). The upper part of each structure collapses in about 17 minutes after firing

Two fire tests were conducted at the warehouse in Phoenix, Arizona, and data was prepared to evaluate how to predict the collapse of structures. Build a firewall to divide the warehouse into two fire protection zones. The temperature was measured as a function of time at three positions during the first test and at both positions during the second test. In addition, the volume fraction of carbon monoxide was measured at selected locations during each test. The stacked wooden pallets are used as the main fuel source and are ignited using paper and electronic matches. Several flammable waste and building structural parts provide the remaining fuel load. Peak temperatures obtained at various heights range from about 300 ° C (570 ° F) to 800 ° C (1470 ° F). The peak value of carbon monoxide volume fraction reached 4% in the first test and 5% in the second test.