Why are the rear bumpers of many medium and small SUV cars black plastic? Is it safe?
The bumpers outside the car are plastic, and the main thing is that the plastic has an anti-collision steel beam behind it, and the thickness of the anti-collision beam is the real safety of the car
The rear bumpers of SUV are plastic, for the overall beauty of the car. In fact, the insurance is plastic wrapped cushioning, rigid foam and metal anti-collision beam.
If the bumper is also made of hard steel, it is very harmful to pedestrians. As a simple example, you as a pedestrian, with iron hammer (representing steel bumper) and with a plastic hammer hit you with the same intensity, which is worse? The same is true of cars. At the same speed, one is all steel similar to an armored car, and one is a plastic car that crashes into you. Which one hurts more?. Obvious。 Plastic in the impact process, because it is a soft material, there will be a contraction force, buffering force, so it can reduce pedestrian damage.
You don't understand the difference between bumpers and anticollision beams. The front and rear bumpers are usually plastic, and the bumper has an anti-collision beam, which is made of steel. Some of them have bubbles. This is not cutting corners. The bumper is just beautiful, so it's plastic. In addition, if the heavy pedestrian, because it is plastic, can effectively alleviate the impact, reduce pedestrian damage. Of course, some manufacturers disdain the behavior of rear anti-collision beams in order to reduce costs. So, personally, you don't know much about cars, and you might have misunderstood something.
