What is a simply supported beam impact testing machine?
In the field of engineering materials and product quality testing, the simply supported beam impact testing machine is a commonly used equipment used to determine the toughness and impact resistance of materials under impact loads. This article will introduce in detail the definition, working principle, application scenarios and related technical parameters of the simply supported beam impact testing machine, and help readers better understand this equipment through structured data.
1. Definition of simply supported beam impact testing machine
The simply supported beam impact testing machine is a device used to test the impact resistance of materials. It mainly impacts the sample with a pendulum to measure the energy absorbed when the sample breaks. This equipment is widely used to test the impact properties of non-metallic materials such as plastics, rubber, composite materials, and some metallic materials.
2. Working principle
The working principle of the simply supported beam impact testing machine is based on the law of conservation of energy. The pendulum is released from a certain height and impacts the sample placed on the support. After the sample breaks, the remaining energy of the pendulum is measured by the angle sensor. By calculating the difference between the initial energy and the remaining energy of the pendulum, the energy absorbed when the sample breaks can be obtained.
| steps | Description |
|---|---|
| 1 | The pendulum is raised to its initial height, storing potential energy |
| 2 | Release the pendulum and impact the specimen |
| 3 | The specimen breaks and the pendulum continues to swing |
| 4 | Measure the remaining energy of the pendulum and calculate the absorbed energy |
3. Application scenarios
Simply supported beam impact testing machines are widely used in the following fields:
| Industry | Application |
|---|---|
| plastic industry | Test the impact resistance of plastic products |
| automobile manufacturing | Evaluating the Toughness of Automotive Parts |
| building materials | Testing the impact resistance of building materials |
| Electronics industry | Testing the impact resistance of electronic component housings |
4. Technical parameters
The following are common technical parameters of simply supported beam impact testing machines:
| parameters | Typical value |
|---|---|
| impact energy | 1J~50J |
| pendulum angle | 150° |
| Sample size | 80mm×10mm×4mm |
| Impact speed | 3.8m/s |
5. The difference between simply supported beam impact testing machine and cantilever beam impact testing machine
Simply supported beam impact testing machine and Izod beam impact testing machine are two common impact testing equipment. Their differences are as follows:
| Comparative item | Simply supported beam impact testing machine | Izod impact testing machine |
|---|---|---|
| Specimen support method | Supported at both ends | One end is fixed |
| Impact direction | The middle part of the sample is impacted | The free end of the specimen is impacted |
| Applicable materials | Plastics, composite materials, etc. | More metal materials |
6. Operation precautions
When using a simply supported beam impact testing machine, you need to pay attention to the following matters:
| Things to note | Description |
|---|---|
| Sample preparation | Ensure that the sample size meets the standards and that there are no defects on the surface |
| Equipment calibration | Regularly calibrate pendulum energy and angle sensors |
| Security protection | Wear protective glasses during operation and stay away from the pendulum swing area |
| environmental control | Tested under standard temperature and humidity conditions |
7. Future development trends
With the advancement of material science and the increase in industrial demand, simply supported beam impact testing machines are developing in the direction of intelligence and high precision. The future may have the following features:
1. Automate the testing process to reduce human errors
2. Real-time data collection and analysis system
3. Multi-language operation interface to improve user experience
4. Higher test accuracy and wider energy range
Through the above introduction, I believe that readers will have a more comprehensive understanding of simply supported beam impact testing machines. This equipment plays an important role in material performance testing and provides a scientific basis for product quality control.
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