Disk Simply Supported Beam Impact Tester Dial Impact Tester for Nonmetallic Materials

A disk simply supported beam impact tester, also known as a dial impact tester, is a specialized piece of equipment used for evaluating the impact resistance of nonmetallic materials. This tester is commonly used in materials testing laboratories and quality control settings to assess how well materials can withstand sudden impact or shock loads. Here's a breakdown of the key components and functions of this type of impact tester:

1. Testing Fixture: The tester typically consists of a support structure that holds the test specimen. In this case, it's designed for nonmetallic materials. The support structure may include a clamping mechanism or fixtures to securely hold the specimen in place.

2. Impact Pendulum: The heart of the impact tester is an impact pendulum, which is a swinging arm or pendulum mechanism that stores and releases energy to strike the test specimen. The pendulum is raised to a predetermined height, where it stores potential energy.

3. Dial Indicator: A dial indicator is an essential component of the tester. It's used to measure the deflection or deformation of the specimen upon impact. This measurement provides data on the material's ability to absorb energy and resist damage during impact.

4. Release Mechanism: The pendulum is released, allowing it to swing down and strike the test specimen. The release mechanism is carefully controlled to ensure consistent and repeatable impacts.

5. Specimen Holder: The nonmetallic material sample is securely held in a specimen holder or fixture. The fixture is designed to minimize any movement or slippage during impact.

6. Data Recording System: Some modern dial impact testers are equipped with data recording and analysis systems. These systems capture and record data on impact force, deflection, and other relevant parameters. This data is then used for analysis and quality control purposes.

The testing process typically involves the following steps:

1. The nonmetallic material sample is prepared and securely fixed within the specimen holder.

2. The impact pendulum is raised to a predetermined height, loading it with potential energy.

3. The pendulum is released, and it swings down to impact the specimen.

4. The dial indicator measures the deflection or deformation of the specimen upon impact.

5. The test results, including the amount of deflection and any visible damage to the specimen, are recorded and analyzed to assess the material's impact resistance.

Dial impact testers are used to evaluate a wide range of nonmetallic materials, including plastics, composites, rubber, and other polymers. The results of impact testing can be crucial for product development, quality control, and ensuring that materials meet specific safety and performance standards. Researchers and manufacturers use this information to make informed decisions about material selection and design to enhance product durability and safety.