Pengujian Tarik

Summary

This video demonstrates a mechanical testing procedure focused on tensile testing of materials. The process involves setting up a testing machine, inserting a specimen, and performing the test to measure its tensile strength. The video walks through the setup, calibration, and analysis of data using specialized software. The material is then subjected to a force until it deforms and breaks, and the test results are exported for further analysis. The presenter explains each step of the process in detail, ensuring viewers understand the necessary setup, safety precautions, and data interpretation required in the tensile testing of materials.

Takeaways

• 😀 The video introduces the tensile test, a common mechanical test used in industries to measure the strength of materials like metals, ceramics, and polymers.
• 😀 The goal of the practical session is to determine the tensile strength of a material and analyze the phenomena that occur during the test.
• 😀 The first step in the procedure is to set up the equipment, including turning on the power panels and test control systems.
• 😀 After powering up the equipment, the test software (Tes Expert) is opened, and the system settings are configured to begin the test.
• 😀 It’s important to set the correct sample distance in the machine (115 mm in this case) to ensure proper testing of the specimen.
• 😀 The specimen is mounted in the grips of the machine, ensuring that the force applied during the test is below 50 GR.
• 😀 Prior to testing, it's essential to ensure that the system is properly calibrated, and any forces acting on the specimen are set to zero in the software.
• 😀 The actual tensile test begins once all settings are verified. The sample will elongate and eventually break, which is recorded by the system.
• 😀 After the specimen breaks, the test data is exported in Excel format for further analysis.
• 😀 The specimen is then carefully removed from the machine, starting with the upper grip, followed by the lower grip. Afterward, the system is powered down and the testing process is complete.

Q & A

What is the primary purpose of the tensile test described in the video?

The primary purpose of the tensile test is to determine the tensile strength of a material and analyze the phenomena that occur during the test.

Why is the tensile test considered one of the most commonly used tests in the industry?

The tensile test is widely used because it applies to various types of materials, including metals, ceramics, and polymers, making it versatile and essential for understanding material behavior under stress.

What is the first step to perform before starting the tensile test?

The first step is to ensure that the electrical panels and control systems are properly set up and powered on. This includes turning on the test control units and ensuring the system is ready for use.

How is the specimen set up for testing in the tensile test machine?

The specimen is placed in the test machine, and grips are used to hold it securely. The distance between the grips is set to 115 mm for the specific material being tested.

What should be done before starting the actual tensile test to ensure accurate results?

Before starting the test, it's important to ensure that the system is properly calibrated, the load is set to zero, and all the settings are correct for the specific test being performed.

What does the graph during the tensile test represent?

The graph during the test shows the actual stress and strain data of the sample as it is being tested. It visually represents the material's behavior, including deformation and fracture.

What happens to the material during the tensile test as it approaches its maximum point?

As the material approaches its maximum tensile strength, it begins to deform. Eventually, it reaches a point where it breaks, signaling the end of the test.

How can the user stop the test and save the data?

The user can stop the test by clicking the 'Stop' button on the test application. Afterward, the data can be exported to an Excel file for further analysis.

What is the final step in the process after completing the tensile test?

The final step is to release the specimen from the machine, shut down the computer, and power off all control systems and electrical panels.

What should the user do if the specimen is bent before starting the test?

If the specimen is bent, the user should adjust the system to ensure that the force is correctly set to zero before starting the test to avoid errors in the results.