temperatures, which is useful for a wide variety of applications. There is some uncertainty surrounding them, however. More support is needed to make them strong enough. Hybrid composite steel sheets are another type of new material. They possess the strength of steel while the composite component makes them lightweight. [St 4] Finally, carbon fiber has recently risen to the forefront. Carbon fiber’s use in the aircraft industry has climbed sharply of late, especially when paired with the use of an epoxy resin. Carbon fiber’s most popular new application is for entire aircraft wings because it offers a large amount of strength for very little weight, which is an important factor for flight. Unfortunately, its superior mechanical properties are somewhat overshadowed by the misconception that it is inflexible. Recent studies, however, have shown carbon fiber’s exceptional ability to flex to meet aerodynamic demands, affirming its rightful place in the aerospace industry and making it a serious contender for composite patching. Additionally, developments in “nanostitching,” the reinforcement of carbon fiber with interwoven nanotubes, has made carbon fiber a must consider when it comes to composite applications. [E3], [st3].
An interesting technology that is particularly relevant and noteworthy is the new “FlexFoil” wing developed by NASA. These flex foil wings utilize a continuous, flexible wing leading edge to adapt and transform themselves mid-flight to ever-changing…
used in the primary structures of aircraft are carbon fibre reinforced plastics (CFRP). CFRP’s are mainly used in high-tension loaded components: body, wings and fuselage. CFRP are lightweight and result in a reduced aircraft weight and consequently reduced fuel consumption.5 Fuel efficiency and environmental factors are the primary motives for the transition from the commonly used aluminium and titanium metals to composites.6 CFRP’s possess a high Young 's modulus and have comparable strength…
environment (citation). Both the chemicals sorbing onto the plastic and leaching from it are possible endocrine disruptors and are carcinogenic.
A. Introduce the plastic fibers topic
1. Definition of fiber
2. Where they are found
1. Clothes/ waste water effluent
a. Browne et al., 2011
a. Habib et al., 1996
b. Zubris and Richards., 2005
Somewhat surprisingly, microplastic accumulation in systems other than marine and aquatic habitats, especially in the inland…
Characteristics of the Four Elements
The four Elements possess unique characteristics and their functions are related to these characteristics. These characteristics have been explained carefully, with ultimate simplicity; where accurate and deep meanings have been considered which will also been elaborated in future sections.
Briefly, the four Elements include the following components:
a) Fire: comes with Heat and Dryness. It is the lightest of all Elements
b) Air: comes…
Spinning of Nylon Fiber:
The turning of the nylon filaments is completed with dissolve turning. There are two strategies for liquefy turning:
1. Grid turning
2. Extruder turning.
Lattice turning is utilized for the generation of better fibers. The nylon chips are made to fall on a hot matrix that melts the nylon pieces. The liquid nylon is pumped through a sand channel to the spinneret. The sort of fiber created relies on the quantity of gaps on the spinneret, the size and the state of the…
Trusses are composed of straight members connected at their ends by hinged connections to form a stable configuration. When loads are applied to a truss only at the joints, forces are transmitted only in the direction of each of its members. That is, the members experience tension or compression forces, but not bending forces. Trusses have a high strength to weight ratio and consequently are used in many structures, from bridges, to roof supports, to space stations.The Pros of a Truss Bridge
with other masking tapes from other countries, the washi-made masking tape is easier to tear off without any trace. However, its power and adhesiveness are as excellent as usual. Washi, a kind of Japanese paper, is traditionally made from inner bark of plants like paper mulberry trees because of its flexibility and length of the fibres. Nevertheless, the major fibres did not exist in Europe when paper making technology was introduced there from Asia in 12th century. Until the beginning of 18th…
Expensive, therefore not an economical substitute for cast iron.
Polymer Impregnated Concrete (PIC)- Improved damping capacity (High damping at lower frequency range
Hollow Composites Sphere- It consists of hollow spheres as filler and epoxy resin as matrix material. Reduced weight. Higher thermal coefficient of expansion than steel. Hollow sphere consists of a mixture of metal oxides or plastic and size ranges from 10µm to 2mm.
Cementitious Composite Materials- Cement as binders.…
Knee Wraps: The Benefits and Drawbacks
What are knee wraps?
The knee wrap is similar to the wrist wrap regarding the logic that applies to both. Knee wraps are also to an “Ace” bandage, except that they are much thicker and stronger. The elastic material that is used to make the knee wrap is the same found in wrist wraps. The allowed width for knee wraps is 8 cm (3 inches), although they can sometimes be 2.0 meter, 2.5 meters or even 3.5 meters long.
Advantages of using knee wraps
Bamboo sheets are smoother because Egyptian cotton sheets still have some fiber ends woven into the fabric. In contrast, the long strands in bamboo sheets are stretched across the entire length of the sheet. As a result, bamboo sheets don’t have any rough ends woven into the fabric making them smooth as silk.
Lastly, both Egyptian cotton and bamboo sheets are unbelievably luxurious. After learning about their soft and smooth textures, it’s easy to see why Egyptian cotton and bamboo…