Notable past NBA players who rely heavily on the underarm fin… Bank Shot. This prevents the aging of the epoxy. Freezers must be capable of maintaining 0 °F or below; most household freezers meet this level. If you're a coach, you already know what "layup" means. When the heating device is below 125 °F, the part can be removed. Do not open these bags until the material is completely thawed, to prevent contamination of the material by moisture. Layups can be broadly categorized into two types: the underarm and the overarm. Types of Layups. I think you make lay-ups with your eyes. The interface between the two parts may or may not have an adhesive layer. You dribble up to the ring and place it on the box above the ring on the board to convert the shot. A clean room for repair layup would be best, but if a clean room is not available, the prepreg should be protected by storing them in bags or keeping them covered with plastic. Warm-up drill with a shooting line and rebounding line, players switch lines, continue then switch sides. The autoclave uses vacuum and positive pressure to consolidate the plies and to provide a path for air and volatiles to escape. Room temperature cure wet layup repairs do not restore either the strength or the durability of the original 250 °F or 350 °F cure components and are often used for wet layup fiberglass repairs for noncritical components. Typical curing temperature for composite materials is 250 °F or 350 °F. Small openings are created at the edges of the tape so that air can escape. Place and seal the vacuum bag, and apply vacuum to the bag. Feet are perpendicular to the baseline, both hands on the ball until the release. 0°/90°, ±45°, 0°/90°, ±45°. Two Foot Layups. No matter what else you do, you must keep your eyes on the prize. A layup is a one-handed shot made from near the basket. Hook Shot This type of shot is more difficult to do. - Duration: 11:50. Vacuum-assisted impregnation consists of the following steps: Place vacuum bag sealing tape on the table surface around the area that is used to impregnate the material. The typical storage temperature is between 40 °F and 80 °F for most epoxy resins. Room temperature cure repairs can be accelerated by the application of heat. All prepreg materials are cured with an elevated temperature cure cycle. A vacuum bag can be used to consolidate the plies and to provide a path for air and volatiles to escape. [Simple Scoring Moves] - Duration: 8:57. This technology has often been referred to as a combination of metal bonding and conventional on-aircraft composite bonded repair. The motion and one-handed reach distinguish it from a jump shot. Store prepreg, film adhesive, and foaming adhesives in a freezer at a temperature below 0 °F. The warp is the high-strength direction due to the straightness of the fibers. Real Talk – What An Opponent Scouting Report Says About You, The Pivot Foot – Which Foot to Use – Permanent vs. This is the preferred method if the repair part is large enough for a vacuum bag on one side of the repair. the under arm is mainly known as the finger roll. - various types of layups, e.g., reverse, power. Typically, attach the first consolidated ply to the tool face and repeat this process after every 3 or 5 layers depending on the prepreg thickness and component shape. This method is preferred for tight-knit weaves and when near optimum resin-to-fiber ratio is required. The vacuum-assisted impregnation method is used to impregnate repair fabric with a two-part resin while enclosed inside a vacuum bag. The resin begins to soften and flow as the temperature is increased. This includes all storage, processing, and quality control functions. The traditional bleedout using a vacuum bag technique places a perforated release film and a breather/bleeder ply on top of the repair. A ball handling program that caters to your skill level and changes as you improve... What does improving your ball handling actually look like? There is no need for a release film because there is no bleeder/breather cloth on top of the repair. The curing oven and heat bonder uses a vacuum bag to consolidate the plies and to provide a path for air and volatiles to escape. Therefore, 90° to zero is across the width of the fabric. Excessively high temperatures cause the material to begin curing, and excessively low temperatures make the material difficult to handle. A layup is the most basic shot type in basketball. As the game has evolved through the years, so has the layup. [Figure 10]. If usage is small, a chest-type freezer may suffice. The layup is considered the most basic shot in basketball. All time and temperature requirements must be met and documented. Do not mix large quantities of quick curing resin. Read the SRM and determine the correct repair material, number of plies required for the repair, and the ply orientation. Laminates cured at room temperature using typical wet layup do not exhibit the same degree of distortion due to the much smaller thermal stresses. A putback of a missed shot is also technically a layup. Block out all that is goin… Lay-ups. Layups - Two lines. The next player on that end gets the rebound and speed dribbles up the other side. Co-curing is a process wherein two parts are simultaneously cured. High-flow resins are preferred for vacuum bag molding. ... two dribbles, from the wing: To survive, this egg must then split into two with each half having exactly the right number of chromosomes. Envelope bagging is a process in which the part to be repaired is completely enclosed in a vacuum bag or the bag is wrapped around the end of the component to obtain an adequate seal. The resin system is already mixed and is in the B stage cure. Sweep the resin into the fabric with a squeegee. Consult the maintenance manual to determine if bleeder plies are required for the repair. More plies of fabric and resin are added and the process is repeated until all plies are impregnated. The bleeder can only absorb a limited amount of resin, and the amount of resin that is bled can be controlled by using multiple bleeder plies. There are more players, more defenders, more hands, and more contact the closer you get to the basket. [Figure 9]. Air that is put into the resin or not removed from the fabric also reduces the repair strength. Film adhesive is often used to improve peel strength. You are shooting the ball in a hook motion. Fabric Impregnation With a Brush or Squeegee, The traditional way of impregnating the fabric is by using a brush or squeegee. Maximum properties are achieved at 150 °F. Most wet layup processes have a room temperature cure but extra heat, up to 150 °F, are used to speed up the curing process. Any volatile contaminants, such as air and/or water, are drawn out of the laminate with vacuum during this time. Adhesive film is frequently placed into the interface between the stiffener and the skin to increase fatigue and peel resistance. Co-cured skins may also have poorer mechanical properties, requiring the use of reduced design values. Always use clamps with pressure distribution pads because damage to the part may occur if the clamping force is too high. Other times, the repair is located on the end of a large component that must have a vacuum bag wrapped around the ends and sealed all the way around. Layups can be broadly categorized into two types: the underarm and the overarm. You’ll typically shoot layups from very close range after dribbling to the basket, or taking a pass near the hoop. The elevated cure cycle consists of at least three segments: Ramp up: The heating device ramps up at a set temperature typically between 3 °F to 5 °F per minute. Objectives: Students will be able to Demonstrate the composite layup process Explain the role of matrix and resin The resin should be uniformly distributed over all of the fabric. The oven or autoclave air temperature probe that measures oven or autoclave temperature is not always a reliable device to determine part curing temperature. Layups are of different types depending upon your position on the court and during transition.Let's break then down one by one. Unlike metal repairs in which the materials are premanufactured, composite repairs require the technician to manufacture the material. resin and hardener. Use a breather and a vacuum bag to compact the repair. - pull-up jump shots off the dribble (e.g. A sheet of solid release film (no holes) is placed on top of the prepreg and taped off at the edges with flash tape. Through purposeful basketball drills, focus on finishing in diverse ways. Make sure to scrape the edges and bottom of the mixing cup to ensure that all resin is mixed correctly. Prepreg material is temperature sensitive. Layups. The practical range of strength and stiffness of carbon epoxy extends from values as low as those provided by fiberglass to as high as those provided by titanium. Most heating devices use a programmable computer control to run the cure cycles. On a layup, players approach the basket and lightly bounce the ball off the backboard with an overhand or underhand motion.As you approach the basket, you should pick up your dribble and get ready to jump towards the basket. These prepregs contain exactly the amount of resin needed in the cured laminate; therefore, resin bleedoff is not desired. Have both feet hit the ground at the same time. It results from personal contact between two opposing players. The plies are usually placed using the smallest ply first taper layup sequence, but an alternative method is to use the largest ply first layup sequence. According to healthcare professionals one is more accurate than the other when it comes to negative results. Put a piece of breather material between the fabric and the edge breather to provide an air path. There are mainly two types of layups the over arm and the under arm. Light scuff sanding removes high resin peak impressions produced by the peel ply weave which, if they fracture, create cracks in the bondline. Place a second piece of solid parting film over the fabric. Principal advantages derived from the co-cure process are excellent fit between bonded components and guaranteed surface cleanliness. The material is typically placed on a roll and a backing material is placed on one side of the material so that the prepreg does not stick together. Figure 7 presents examples of the effects caused by nonsymmetrical laminates. In the co-bonding process, one of the detail parts is precured with the mating part being cured simultaneously with the adhesive. When an autoclave is used for curing parts, make sure that the pressure in the autoclave is relieved before the door is opened. Basketball features constant motion, and contact between opposing players is unavoidable, but significant contact that is the fault of illegal conduct by one opponent is a foul against that player. Laminates co-cured over honeycomb core may have distorted plies that have dipped into the core cells. Your legs? A vacuum bag will be used to consolidate the plies and to bleed off excess resin and volatiles. 11:50. Since many resin systems do not have a dye, the resin must be mixed slowly and fully for three minutes. This film should be the same size or larger than the first piece. High quality parts can be made inexpensively using shrink tape. Cool down temperatures are typically below 5 °F per minute. Prepreg is a fabric or tape that is impregnated with a resin during the manufacturing process. The temperature of large parts that are cured in an oven or autoclave might be different from that of an oven or autoclave during the cure cycle, because they act like a heat sink. Room temperature curing is the most advantageous in terms of energy savings and portability. When we say "finishing", that means the player is going to the basket and finishing with some type of shot. There are a few things to keep in mind when shooting this: Jump off of one foot and land on two. Store the prepreg material in a freezer below 0 °F to prevent further curing of the resin. Both methods are illustrated in Figures 3 and 4. the first two players from each end start the left-handed speed dribble and shoot the left-handed lay-up. I ask you, what part of the body allows you to make lay-ups? 1. With only two balls on each end, this is a much more difficult goal to make than if every player has a ball. Bleedout of these prepregs results in a resin-starved repair or part. These effects are most pronounced in laminates that are cured at high temperature in an autoclave or oven due to the thermal stresses developed in the laminate as the laminate cools down from the cure temperature to room temperature. Layup definition is - the action of laying up or the condition of being laid up. Autoclaves, curing ovens, and heat bonders can be used to cure the prepreg material. Pour the resin onto the fabric. Progressions. Place an edge breather cloth next to the vacuum bag sealing tape. All prepreg material should be protected from dust, oil, vapors, smoke, and other contaminants. THE DIFFERENT TYPES OF LAYUPS IN BASKETBALL FOLLOW ALL OF THESE! There should only be three or four dribbles total when going to the elbow and back. Built by Varick Design. ±45°, 0°/90°, ±45°, 0°/90°, Mix more than one batch if more material is needed than the maximum batch size. Controlled bleed allows a limited amount of resin to bleed out in a bleeder ply. Cool down: The heating device cools down at a set temperature. This type is the result of two separate sperms fertilizing a single egg. As with any fundamental skill, the basic fundamentals need to be mastered before you gain the ability and confidence to perform more advanced maneuvers. The vacuum bag is taped in place with tacky tape and a vacuum port is placed through the bag to create the vacuum. Place a piece of perforated release film on top of the prepreg material, a bleeder ply on top of the perforated release film, and a solid release film on top of the bleeder. Precured laminates undergoing secondary bonding usually have a thin nylon or fiberglass peel ply cured onto the bonding surfaces. The prepreg material is sticky and adheres to other plies easily during the stack-up process. ... A layup in basketball is a two-point shot attempt made by leaping from below, laying the ball up near the basket, and using one hand to bounce it off the backboard and into the basket. Both types of glaciers form through the slow accumulation and compaction of snow into dense glacial ice. the last type that is used is called the over hand shot. If these types of materials need to be shipped, place them in special containers filled with dry ice. For wet layup repair, impregnate the fabric with resin. Muscular Strength Exercises: Example, Types, and Benefits 3 / 5 ( 2 votes ) If you are new to starting muscular strength exercises, you may be faced with questions such as where to start, how many times to practice, and how to do it. Composite Honeycomb Sandwich Repairs Part 1, Composite Honeycomb Sandwich Repairs Part 2. The curing process is accomplished by the application of heat and pressure to the laminate. The resin should be a continuous pool in the center area of the fabric. Free Throw. Prepare the prepreg repair plies in a controlled-temperature environment and bring them to the repair area immediately before using them. How to use layup in a sentence. Use a brush or squeegee to thoroughly wet the fabric. These types of resins produce heat after they are mixed. Hold or soak: The heating device maintains the temperature for a predetermined period. The Different Types of CRAZY LAYUPS! Refrigerators are used to store laminating and paste adhesives and should be kept near 40 °F. Remove the fabric and cut the repair plies. Too much or too little resin affects the strength of the repair. The oven temperature and the part temperature can be substantially different if the part or tool acts as a heat sink. These methods include the three stages of learning, types of skills, types of practice and types of feedback (See Appendix 3). If you get this type of shot down, then you can work on practicing the other types of shots. This also limits the time out of the freezer for a big roll. Allow 2 minutes for the air to be removed from the fabric. Copy the repair ply information to a piece of repair material that is large enough to cut all plies. Epoxy resins may require refrigeration until they are used. [Figure 1]. Some wet layup repairs use an elevated cure cycle as well to increase repair strength and to speed up the curing process. The label on the container states the correct storage temperature for each component. The strength and stiffness of a composite buildup depends on the ply orientation. As a result, compressive stiffness and strength can be reduced as much as 10 and 20 percent, respectively. Place a sheet of fabric on the caul plate and apply resin in the middle of the sheet. The area should be at least 4 inches larger than the material to be impregnated. Wilt Chamberlainwas one of the early practitioners of a showy finger-roll layup. Lay out the repair plies on a piece of fabric and impregnate the fabric with the resin. In order to minimize any residual thermal stresses caused during cure of the resin, it is always good practice to design a symmetrical, or balanced, laminate. Shot of of 1 foot, Lay up. A personal foul is the most common type of foul. While the peel ply sometimes hampers nondestructive inspection of the precured laminate, it has been found to be the most effective means of ensuring surface cleanliness prior to bonding. Layup Process (Typical Laminated Wet Layup). In order to ensure success of developing my skill acquisition, I have chosen to focus on two types of practice; part and drill. The underarm layup involves using most of the wrist and the fingers to 'lay' the ball into the net or off the board. [Figure 8]. A piedmont glacier is a type of alpine glacier formed where two or more alpine glaciers meet at the base of a valley system. You should aim for 10 layups, or see how many baskets you can make within a 30-second time limit. Carbon and Kevlar® dry fabric could also be used with a wet layup resin system. Materials that are stored incorrectly can begin to cure before they are used for a repair. The laminate is compacted by applying pressure, usually vacuum (atmospheric pressure); autoclaves apply additional pressure, typically 50–100 psi. Place a piece of solid parting film on the table. The disadvantage of room temperature wet layup is that it does not restore the strength and durability of the original structure and parts that were cured at 250 °F or 350 °F during manufacturing. Several different versions of the layup are around today. BEST 1 ON 1 BASKETBALL MOVES! Epoxy resins, like all multipart materials, must be thoroughly mixed. Always consult the maintenance manual or manufacturer tech sheets for correct bagging and bleeding techniques. After the material is thawed and removed from the backing material, cut it in repair plies, stack in the correct ply orientation, and vacuum bag. This range of values is determined by the orientation of the plies to the applied load. Weigh the fabric to find the amount of resin mix that is necessary to impregnate the material. Some resin systems have a dye added to aid in seeing how well the material is mixed. There are four main methods that are used in order to gauge the level of an athlete’s motor skill. Honeycomb sandwich assemblies commonly use a secondary bonding process to ensure optimal structural performance. The different stroke types cause similar symptoms because each affects blood flow in your brain. Remove this trapped air by covering the prepreg with a perforated release film and a breather ply, and apply a vacuum bag. The handling life is shorter than the mechanical life. When a piedmont glacier flows down a mountain and into the sea, it is called a tidewater glacier. It is frequently used for removable aircraft parts, such as flight controls, access panels, etc., and when a part’s geometry and/or the repair location makes it very difficult to properly vacuum bag and seal the area in a vacuum. A free throw is a shot attempt given to a player that was fouled and it is taken on the … The hold at the final cure lets the resin finish curing and attain the desired structural properties. For repairs on aircraft in very cold or very hot climates, the area should be protected by a tent around the repair area. It is critical during a repair operation to replace each damaged ply with a ply of the same material and orientation or an approved substitute. In the vacuum bag molding process, the plies are generally placed in the mold by hand layup using prepreg or wet layup. No bleeder is used, and the resin is trapped/sealed so that none bleeds away. In this sequence, the first layer of reinforcing fabric completely covers the work area, followed by successively smaller layers, and then is finished with an extra outer layer or two extending over the patch and onto the sound laminate for some distance. The technician puts a mold release compound or a release film on a caul plate so that the plies will not adhere to the caul plate. A 2-inch strip of breather cloth is placed around the repair or part (edge breather). Practicing one-foot and two-foot layups are important but how often do you get wide open layups in games? Parts can also be pressed together with clamps. Regular: ... Keeping two hands on the ball and jumping off of two feet keeps the player in control and in a stronger, more balanced position. Another method of pressure application for oven cures is the use of shrink wrapping or shrink tape. The tape is wrapped around the completed layup, usually with only a layer of release material between the tape and the layup. The operator can select from a menu of available cure cycles or write his or her own program. Store the prepreg materials in a sealed, moisture proof bag. Your arms? Warp is the longitudinal fibers of a fabric. An aircraft repair’s cure cycle starts with material storage. Use a piece of thin plastic, and trace the size of each repair ply from the damaged area. The part is impregnated with resin, and the vacuum bag is placed over the repair. In some cases, a part may be too small to allow installation of a single-side, bag vacuum. The player then explodes off the ground and shoots a left-hand layup straight up in the air. We sometimes use the word "layup" and "finishing" interchangeably. In this lab, the students will fabricate by a sequenced two layer lay-up of composite material using epoxy resin as matrix and fiberglass woven cloth as reinforcement. Mix the resin system just before making the repair. The demand for your concentration goes up accordingly. Layups Types, Laminated Wet Layup Process, Saturation and Vacuum Bagging Techniques, Alternate Pressure Application, Curing of Composite Materials - Composite Repairs Part 2 Types … As the temperature approaches the final cure temperature, the rate of reaction greatly increases, and the resin begins to gel and harden. On "Go!" bank shots). The holes in the release film allow air to breath and resin to bleed off over the entire repair area. The curing of a repair is as important as the curing of the original part material. Composite materials can be used to structurally repair, restore, or enhance aluminum, steel, and titanium components. Secondary bonding utilizes precured composite detail parts, and uses a layer of adhesive to bond two precured composite parts. Some resin systems require storage below 40 °F. Mix only the amount of material that is required. A typical co-cure application is the simultaneous cure of a stiffener and a skin. This technique is used for solid laminate edges of honeycomb panels. Types of shots. Do not forget to remove the backing material when stacking the plies. Apply the vacuum for 10 to 15 minutes at room temperature. Many repair facilities cut the material in smaller kits and store them in moisture-proof bags that thaw quicker when removed from the freezer. Thermocouples are placed near the repair, and they provide temperature feedback for the heating device. After the fabric is impregnated, cut the repair plies, stack in the correct ply orientation, and vacuum bag. All frozen prepreg materials need to be stored in moisture-proof bag to avoid moisture contamination. It is important to put the right amount of resin on the fabric. Tristan Jass Recommended for you. The material can be tested, and the storage life could be extended by the materialmanufacturer. If the warp clock is not available on the fabric, the orientation is defaulted to zero as the fabric comes off the roll. Walk-in freezers can be used for large volume cold storage. Wet layup repairs are often used with fiberglass for nonstructural applications. there is a form of finger roll which you fake to one way and layup the other way which is called the "around the world". The recommended time at room temperature to complete layup and compaction is called the handling life. The breather allows the air to escape. There are 2 basic types of lay ups’ Shot off of 2 feet, Power Lay Up. The maximum time allowed for material at room temperature before the material cures is called the mechanical life. Consolidation is necessary if parts are made from several layers of prepreg, because large quantities of air can be trapped between each prepreg layer. Boron prepreg tape with an epoxy resin is most often used for this application. Spring clamps can be used in applications where resin squeeze-out during cure would require C-clamps to be retightened periodically. This layup is more commonly known as the finger roll. The first one is the normal layup which coaches teach you first when you start playing basketball. Horizontal (or edge) bleedout is used for small room temperature wet layup repairs. A jump shot can make three different types of points which are: a free throw shot, two pointer, and three pointer. With all that goes on around you during a basketball game, that activity level increases ten-fold as you get closer to the basket. There are different ways you can shoot a two footed layup, but I'm just going to breakdown the jump stop layup. Too many bleeder plies can result in a resin-starved repair. Co-curing often results in poor panel surface quality, which is prevented by using a secondary surfacing material co-cured in the standard cure cycle or a subsequent fill-and-fair operation. Layups. That's why it's essential to have many different types of finishing moves in your bag of tricks to be as effective as possible. The edge breather should be 1–2 inches wide. Many high-strength prepregs in use today are no-bleed systems. Material that exceeds the mechanical life needs to be discarded. very little reaction occurs. Slowly sweep the resin from the center to the edge of the fabric. Examples of balance laminates are presented in Figure 6. Clamps (e.g., C-clamps and spring clamps) are used for pressing together the edges of components and/or repair details. A vacuum is applied and a squeegee is used to remove air and excess resin to the edge breather.
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