Personalized Helmet Design
Since the 900 BC, Helmets have been used for safety and since then, they have become a worldrenoun safety instrument. There have been innovations of them ever since. For bikers, motorcyclists, sports, etc. Helmets are very important because they help prevent or even minimize head injuries. There injuries could be life long and can even be fatal in an uncontrollable environment. Riders with helmets are less likely to be seriously hurt from their injuries and to break facial bones, than those not wearing a helmet. They are usually designed to handle major crash energy through a layer of crushable foam. When you crash and hit a hard surface, the foam part of a helmet crushes, controlling the crash energy and extending your head's stopping time by about six thousandths of a second to reduce the peak impact to the brain. Without a helmet this could be life changing but with a helmet, it might be able to only hold you to a concussion. Bad hits to the head often lead to a concussion which is able to be cured. "An estimated 1.6-3.8 million sports- and recreation-related concussions occur in the United States each year. During 2001-2005, children and youth ages 5-18 years accounted for 2.4 million sports-related emergency department (ED) visits annually, of which 6% (135,000) involved a concussion." Thick and less dense foam is better, giving your head more room and milliseconds to stop. Basic laws of physics result in more force to the brain if the stopping distance is shorter. If the helmet has less dense foam, it can crush in a lesser impact, but it has to be thicker in order to avoid crushing down and "bottoming out" in a harder impact.
The head is probably the most vulnerable part of the human body during an accident. While the driver's body is strapped in very tightly, the head can jerk around uncontrollably. The helmet (as shown in the image below) is designed to dissipate impact energy over the entire helmet and prevent debris from puncturing it.
NASCAR racing is a very risky sport. Motions due to sudden deceleration forces on the head especially when the car loses control at a very high speed. Every NASCAR driver is required to wear some type of helmet. Most wear a full-faced helmet which covers the entire head and wraps around the mouth and chin. Others wear an open-faced helmet which only covers the head. Drivers who wear the open-face helmet usually wear protective goggles. It is It is known that the percentage of racing accidents resulting in the hospital in, at around 25 percent, is higher than any other major international sport and that the average period in hospital is the longest. They claim that a full-face helmet restricts their peripheral vision. NASCAR driving hasn't been around for a super long time. As the racing progressed, so did the helmets. Especially in its safety features and comfortability.
NASCAR racing is a very risky sport. Motions due to sudden deceleration forces on the head especially when the car loses control at a very high speed. Every NASCAR driver is required to wear some type of helmet. Most wear a full-faced helmet which covers the entire head and wraps around the mouth and chin. Others wear an open-faced helmet which only covers the head. Drivers who wear the open-face helmet usually wear protective goggles. It is It is known that the percentage of racing accidents resulting in the hospital in, at around 25 percent, is higher than any other major international sport and that the average period in hospital is the longest. They claim that a full-face helmet restricts their peripheral vision. NASCAR driving hasn't been around for a super long time. As the racing progressed, so did the helmets. Especially in its safety features and comfortability.
Orthographic Perspective Helmet Design
https://www.nascar.com/en_us/news-media/articles/2012/10/31/nascar-drivers-racing-helmets-preference.html
https://en.wikipedia.org/wiki/Racing_helmet
http://www.protectthebrain.org/Brain-Injury-Research/What-is-a-Concussion-.aspx
https://www.youtube.com/watch?v=I7F8Y6Uf6Ls
HELMET REFLECTION
- First off, that was a very difficult task. Using Auto Desk 360 was a completely new experience that at first, was hard to get the hang of. I wish I knew how to use it early on or even had a clue how it even worked. The videos were a huge help and now I have a better idea on how to use this program. It still took a great amount of time but I was able to ask my classmates and peers as well to help me with the process. I was able to draw small pictures of the different perspectives of the helmet as I went along. From this experience, I've learned to adapt to the environment and problem solve with my available resources. Overall, this was a successful helmet and a program that I am now familiar with. It has improved my computer skills and has definitely got me ready for the future.
Key Concepts:
ACCELERATION is a change in speed over a period of time; the higher the acceleration, the faster the change in speed. For example, if a car goes from 0 miles per hour (mph) to 60 mph in 2 seconds, it is a higher acceleration than if the car goes from 0 mph to 40 mph in 2 seconds. Acceleration is a rate of change of speed; NO change means NO acceleration. If something is moving at constant speed, it is NOT accelerating.
COEFFICIENT OF FRICTION is the measurement of the level of friction embodied in a particular material. The formula is μ = f/N, where μ is the coefficient of friction, f, is the amount of force that resists motion, and N is the normal force. Normal force is the force at which one surface is being pushed into another.
CRUMPLE ZONES are areas of an object designed to deform and crumple in an impact, as a means to absorb the energy of a collision. The fronts of most automobiles are designed as crumple zones to protect the passengers from frontal collisions.
DRAG is a term used in fluid dynamics that is sometimes referred to as air resistance or fluid resistance. Friction is one of multiple factors that influence the amount of drag encountered by a body moving through a fluid such as air or water.
INERTIA when an object remains still or moves in a constant direction at a constant speed.
G FORCE a force acting on a body as a result of acceleration or gravity, informally described in units of acceleration equal to one g.
FRICTION is a force that resists motion when two objects or surfaces come in contact.
FORCE causes masses to accelerate; they are influences that cause a change of movement, direction, or shape. When you press on an object, you are exerting a force on it. When a robot is accelerating, it does so because of the force its wheels exert on the floor. Force is measured in units such as pounds or newtons. For instance, the weight of an object is the force on the object due to gravity (accelerating the object towards the center of the earth).
KINETIC FRICTION (or dynamic friction) occurs when two objects are moving relative to each other and rub together (like a sled on the ground).