1. Introduction to Bump Testing:

Bump testing can be considered as the cumulative effect of mechanical shock testing—a process of repeated impacts. Compared to mechanical shock, the various magnitudes in bump testing are relatively smaller. Its purpose is to examine components, equipment assemblies, and other electronic parts of the specimen that are subjected to repeated impacts during transportation or in-use environments. The results are compared against the specimen's specifications to determine its ability to withstand the severity of bump conditions. This test is primarily aimed at unpackaged samples and samples whose packaging can be considered an integral part of the product itself (e.g., in transport cases). For the effects of repeated land transport vibration on the test object, bump testing simulates repeated jolts, severe shaking, or collisions, which vary with distance, road conditions, vehicle, trailer, and railway transport types. These effects occur at different frequencies and exhibit complex and random characteristics, with railway transport primarily experiencing medium-intensity jolts due to rail joints.

2. Bump Test Standards:

Bump Testing: IEC 60068-2-27, GB/T 2423.6, GB/T 4857.20, GB/T 2423.6

3. Application Areas of Bump Testing:

1) Road Transportation: Road vehicle electronic and electrical equipment, automotive devices and components, automotive parts, etc.

2) Computers: Computers, displays, mainframes, computer components, medical equipment, precision instruments, etc.

3) Electronics and Communications: Mobile phones, RF devices, electronic communication components, PCBs, PCBAs.

4) Electrical Appliances: Household appliances, lighting fixtures, transformers, various household electrical equipment, instruments, medical devices.

5) Others: Packaging boxes, transportation equipment, etc.

4. Bump Testing Machine Parameters:

Table Load Capacity: 50 kg

Half-sine Peak Acceleration: (15~150) g

Pulse Duration: (2~11) ms

5. Advantages of GTS Testing:

The bump testing machine in the GTS laboratory features a highly rigid working platform with excellent uniformity of peak acceleration across the table surface. The system is highly reliable with comprehensive protection functions. It can be expanded to generate additional shock waveforms such as terminal peak sawtooth and trapezoidal waves, enabling both shock and bump testing.