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Ply (layer)
A ply is a layer of material which has been combined with other layers in order to provide strength. The number of layers is indicated by prefixing a number, for example 4-ply, indicating material composed of 4 layers. Etymology The word "ply" derives from the French verb ''plier'', "to fold", from the Latin verb ''plico'', from the ancient Greek verb ''πλέκω''.Cassell's Latin Dictionary, Marchant, J.R.V, & Charles, Joseph F., (Eds.), Revised Edition, 1928, p.421 Examples *Yarn, where plying is a spinning technique to combine several fibres. *Vehicle tires *Plywood *Toilet paper Toilet paper (sometimes called toilet tissue or bathroom tissue) is a tissue paper product primarily used to clean the anus and surrounding anal region of feces after defecation, and to clean the perineal area and external genitalia of u ... References Structural analysis Structural engineering ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Layer
Layer or layered may refer to: Arts, entertainment, and media *Layers (Kungs album), ''Layers'' (Kungs album) *Layers (Les McCann album), ''Layers'' (Les McCann album) *Layers (Royce da 5'9" album), ''Layers'' (Royce da 5'9" album) *"Layers", the title track of Royce da 5'9"'s Layers (Royce da 5'9" album), sixth studio album *Mega Man X8#Maverick Hunters, Layer, a female Maverick Hunter in the ''Mega Man X'' series *Layer, an element in a digital painting *Layer (film), ''Layer'' (film), a 2022 Russian film Science * Stratum, a layer of rock or soil with internally consistent characteristics * Thermocline, a layer within a body of water where the temperature changes rapidly with depth *Layer, an area in the Neocortex#Layers, neocortex with specific structure and connection pattern among neurons Technology Computing * Layer (object-oriented design), a group of classes that have the same set of link-time module dependencies to other modules * Layers (digital image editing), used i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Plying
In the textile arts, plying (from the French verb ''plier'', "to fold", from the Latin verb ''plico'', from the ancient Greek verb .) is a process of twisting one or more strings (called strands) of yarn together to create a stronger yarn. Strands are twisted together in the direction opposite that in which they were spun. Plied yarns will not unravel, break, or degrade as easily as unplied yarns. When enough twist is added to the plies to counter the initial twist of each strand, the resulting yarn is "balanced", having no tendency to twist upon itself. The number of strands used to make the yarn is usually the same as the number of plies it has. Two-ply yarn means two strands were used, three-ply yarn means three strands were used, etc. Embroidery floss is generally a six-ply yarn, for example. There are some exceptions to this, most notably in chain plying. Plying handspun yarns There are two common ways to ply a balanced yarn: regular and chain plying. Both methods involv ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tire
A tire (American English) or tyre (British English) is a ring-shaped component that surrounds a Rim (wheel), wheel's rim to transfer a vehicle's load from the axle through the wheel to the ground and to provide Traction (engineering), traction on the surface over which the wheel travels. Most tires, such as those for automobiles and bicycles, are pneumatically inflated structures, which also provide a flexible cushion that absorbs shock as the tire rolls over rough features on the surface. Tires provide a footprint, called a contact patch, that is designed to match the weight of the vehicle with the bearing strength of the surface that it rolls over by providing a bearing pressure that will not deform the surface excessively. The materials of modern pneumatic tires are synthetic rubber, natural rubber, fabric, and wire, along with carbon black and other chemical compounds. They consist of a tire tread, tread and a body. The tread provides Traction (engineering), traction ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Plywood
Plywood is a material manufactured from thin layers or "plies" of wood veneer that are glued together with adjacent layers having their wood grain rotated up to 90 degrees to one another. It is an engineered wood from the family of manufactured boards which include medium-density fibreboard (MDF), oriented strand board (OSB) and particle board (chipboard). All plywoods bind resin and wood fibre sheets (cellulose cells are long, strong and thin) to form a composite material. This alternation of the grain is called ''cross-graining'' and has several important benefits: it reduces the tendency of wood to split when nailed at the edges; it reduces expansion and shrinkage, providing improved dimensional stability; and it makes the strength of the panel consistent across all directions. There is usually an odd number of plies, so that the sheet is balanced—this reduces warping. Because plywood is bonded with grains running against one another and with an odd number of composite part ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Toilet Paper
Toilet paper (sometimes called toilet tissue or bathroom tissue) is a tissue paper product primarily used to clean the anus and surrounding anal region of feces after defecation, and to clean the perineal area and external genitalia of urine after urination or other bodily fluid releases. It also acts as a layer of protection for the hands during these processes. It is usually supplied as a long strip of perforated paper wrapped around a paperboard core for storage in a dispenser near a toilet. The bundle is known as a toilet roll, or loo roll or bog roll in Britain. There are other uses for toilet paper, as it is a readily available household product. It can be used like facial tissue for blowing the nose or wiping the eyes. Some women may use the paper to absorb the bloody discharge that comes out of the vagina during menstruation. It can be used to wipe off sweat or absorb it. Toilet paper can be used in cleaning like a less abrasive paper towel. As a prank, toile ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Structural Analysis
Structural analysis is a branch of Solid Mechanics which uses simplified models for solids like bars, beams and shells for engineering decision making. Its main objective is to determine the effect of loads on the physical structures and their components. In contrast to theory of elasticity, the models used in structure analysis are often differential equations in one spatial variable. Structures subject to this type of analysis include all that must withstand loads, such as buildings, bridges, aircraft and ships. Structural analysis uses ideas from applied mechanics, materials science and applied mathematics to compute a structure's deformations, internal forces, stresses, support reactions, velocity, accelerations, and stability. The results of the analysis are used to verify a structure's fitness for use, often precluding physical tests. Structural analysis is thus a key part of the engineering design of structures. [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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