PENGUJIAN TRANSVERSAL BENDING PADA SAMBUNGAN LAS

Introduction

This tutorial provides a step-by-step guide on conducting a transverse bending test on weld joints using a universal testing machine. The process follows the guidelines outlined in ASME Section IX, and is particularly designed for students conducting laboratory practices during the COVID-19 pandemic. Understanding this testing method is essential for evaluating the strength and integrity of welded connections.

Step 1: Prepare the Test Specimen

• Select the Material: Choose the type of welded material you will be testing.
• Cut the Specimen: Ensure the specimen is cut to the appropriate dimensions as specified in ASME Section IX.
• Weld the Specimen: Perform the welding process carefully, ensuring proper technique and alignment.
• Inspect the Weld: Check for any visible defects in the weld that may affect the test results.

Step 2: Set Up the Universal Testing Machine

• Calibration: Ensure the universal testing machine is calibrated according to the manufacturer's specifications.
• Install the Specimen: Place the welded specimen in the machine, making sure it is securely positioned.
• Adjust the Machine Settings: Set the machine to the appropriate parameters for bending tests, including load rate and displacement limits.

Step 3: Conduct the Bending Test

• Start the Machine: Initiate the testing process, monitoring the machine as it applies force to the specimen.
• Record Data: Observe and document the load and deformation values throughout the test.
• Identify Failure Points: Note the load at which the specimen fails or yields, as this is critical for analysis.

Step 4: Analyze the Results

• Calculate Strength: Use the recorded data to calculate the bending strength of the weld joint.
• Visual Inspection: Examine the fracture surface of the specimen to assess the quality of the weld.
• Document Findings: Prepare a report summarizing the test results, including any observations about the weld quality and performance.

Conclusion

In this tutorial, you have learned how to perform a transverse bending test on weld joints using a universal testing machine. Key steps include preparing the test specimen, setting up the machine, conducting the test, and analyzing the results. Practicing these steps will enhance your understanding of weld integrity and ensure adherence to industry standards. For further learning, consider experimenting with different materials and welding techniques to compare results.