Cars have become more and more common in people's lives, but there are also a lot of accidents every day, which have a lot to do with the performance of the car, such as the performance of the brake pad. The quality of brake pad directly affects the effectiveness and reliability of the stopping process or emergency braking process, and also directly affects the life safety of drivers and passengers. Using the infrared thermal camera can see the temperature change of the brake pads to work process, so as to test the brake pads and wear resistance.

1. Why should the brake pad be tested for temperature?

High performance braking comes from a good braking system. An automobile brake system generally includes brake pedals, brake pads, hydraulic circuits, calipers and brake discs. When the driver presses down on the pedal, the hydraulic circuit applies force to calipers fitted with brake pads that snap together and hold the brake discs in the wheels, slowing them down. The choice of friction material determines the braking performance of brake pad to a great extent.

Temperature is an important factor affecting the performance of brake pad. On the one hand, the temperature affects brake brake brake brake brake brake brake, wear resistance and other aspects of performance; On the other hand, it reflects the brake braking and wear resistance and other properties. Therefore, temperature detection is very important in the study of brake pad materials.

2.The application of infrared thermal camera in brake pad temperature detection

When the brake pad temperature is too high, the working efficiency will decrease. If the brake pad friction material is too soft, the brake pad temperature will rise sharply after continuous braking, and braking force will drop significantly. On the contrary, if the friction material is too hard, the temperature change trend is relatively slow, will accelerate the brake disc brake disc wear, emergency braking may let the brake friction plate cracking or falling off, and eventually lead to brake failure.

By using the infrared thermal camera, the staff can know the temperature change trend of the entire brake pad and brake system. According to this temperature change trend, the brake condition and wear resistance of the brake pad can be analyzed.

3. Infrared thermal camera temperature detection unique advantages

There are three existing means of temperature measurement:

1) Contact thermocouple

The response speed of contact thermocouple is slow, and it cannot show the overall temperature distribution of the entire brake pad. The operation is too complex, so the efficiency of staff is difficult to improve.

2) Infrared point thermometer

The infrared point-temperature instrument has fast reaction speed and adopts non-contact temperature measurement, but the infrared point-temperature instrument cannot display the temperature distribution of the whole brake pad.

3) Infrared thermal camera

The infrared thermal camera makes up the deficiency of contact thermocouple and infrared point thermometer. It is easy to operate and has fast reaction speed. It adopts non-contact temperature measurement and can display the temperature distribution of the whole brake pad.