Which of the following is classified as a destructive type weld test?

The guided bend test is categorized as a destructive type weld test because it involves applying a force to a weldment until it deforms or breaks. This test aims to assess the quality and integrity of the weld by examining how well it can withstand bending forces. The specimen is bent around a specified radius, and any signs of fracture, cracking, or lack of fusion are indicative of weld quality issues. Since the test results in a permanent change to the specimen, it is considered destructive.

In contrast, visual inspection, radiographic testing, and ultrasonic testing are all non-destructive testing methods. Visual inspection involves checking the weld surface for defects without altering the material, radiographic testing uses X-rays to visualize the internal structure without damaging the weld, and ultrasonic testing employs high-frequency sound waves to detect flaws in the material without causing any harm to the specimen.