What are the good attributes of a good bumper system? Geometry, stability and energy absorption. Bumpers on colliding vehicles should line up geometrically so that they engage each other during a low-speed crash to absorb crash energy.
What makes a good car bumper?
Plastic is the preferred material for modern car bumpers for several reasons. First and foremost, plastic is much lighter and more aerodynamic than metal, which improves the car’s fuel efficiency. Plastic is also easier to shape, which is useful during both the manufacturing and bumper repair process.
What are the bumper requirements?
The standard requires protection in the region 16 to 20 inches above the road surface and the manufacturer can provide the protection by any means it wants. For example, some vehicles do not have a solid bumper across the vehicle, but meet the standard by strategically placed bumper guards and corner guards.
What is the purpose of bumper system?
The purpose of bumpers is to reduce or prevent physical damage to the front and rear of vehicles in low-speed crashes. The bumpers are designed to protect the hood, trunk, grill, fuel, exhaust and cooling system. A bumper is a shield that is usually made of steel, aluminum, rubber or plastic.
What is bumper system?
1. Introduction. The front car bumper system is a complex energy-absorbing system in a car design  which must meet both the requirements of pedestrian safety [2, 3] and low-speed impact . An energy absorber is often set between the bumper beam and the bumper skin to absorb impact energy [5–7].
What kind of plastic are car bumpers?
Polycarbonate. Like polypropylene, polycarbonate is so resistant to impact that it is often used for car bumpers and headlight lenses. This kind of car plastic is highly resistant to weathering, able to handle conditions from rain and snow to heat and cold.
Are car bumpers metal or plastic?
Most OEM bumpers are made out of plastic and feature an aluminum or steel reinforcement bar hidden in the middle. Some bumpers may also contain polypropylene in order to help absorb energy during an impact.
How much impact can a bumper take?
Today, standard passenger vehicle bumpers have a rigid reinforcing bar under the outer cover, with sections of compressible foam or plastic underneath. In the United States, passenger car bumpers must absorb a five mph impact from another vehicle with no damage to the car body.
Can DOT bumper be bent?
According to Dot requirements, it must be within 305 mm or 12 inches of the rearmost surface, so that right corner is probably bent too far.
Can you drive with a broken bumper?
Is it illegal to drive with a damaged bumper? Depending on the accident, you may need to replace these because driving a car with bumper damage or a missing fender is illegal. Misplaced or broken bumpers, jagged edges, and major damage need to be repaired before you can drive again.
What is a 5 mph bumper?
9. What is a 5 mph bumper? Five miles per hour is a benchmark, an impact speed at which bumpers could easily — but generally don’t — prevent all but very minor cosmetic damage in barrier tests.
What is the meaning of bumper harvest?
In agriculture, a Bumper Crop is a crop that has yielded an unusually productive harvest. The word “bumper” in this context comes from a usage that means “something unusually large“, which is where this term comes from.
How much does it cost to get a bumper installed?
Bumper Replacement Costs
According to Cost Helper, a new bumper for a passenger car can cost anywhere between $100 and $1,000. Installation and painting the new bumper can cost between $200 and $600. Bumpers for pickup trucks, SUVs and luxury vehicles will have higher costs.