Ultrasonic flaw detection method for titanium and titanium alloy processed products GB 5193-85

： Ultrasonic Testing of Titanium and Titanium Alloy Processing ProductsThis standard specifies the method for the ultrasonic testing of titanium and titanium alloy processing products. The standard applies to the inspection of titanium and titanium alloy plates, strips, wires and forgings.1. MethodologyThe ultrasonic testing of titanium and titanium alloy processing products is based on the principle of reflection and refraction of ultrasonic waves generated by an ultrasonic transducer. The principle is such that an ultrasonic transducer, which is placed in contact with the object to be tested, is energized with an appropriate electric pulse to generate ultrasonic waves. These waves then propagate through the material and are reflected or refracted off any irregularities in the materials structure. An ultrasound receiver then reads these reflections and refractions and interprets them to detect any structural abnormalities within the material.2. Safety ConsiderationsSafety considerations must be taken into account when conducting ultrasonic tests. Ultrasound is hazardous if used incorrectly and has the potential to cause harm to the operator and to other people in the vicinity. It is vitally important that the operator understands and adheres to all safety precautions set out by the manufacturer of the equipment being used to conduct the tests.3. Equipment RequirementsIn order to conduct correct ultrasonic tests of titanium and titanium alloy processing products, it is essential to use the correct equipment. All ultrasonic inspection equipment must conform to the corresponding standards and must also conform to the manufacturers specifications. The operator must be trained and qualified in the operation of the equipment he/she is using.4. Test PreparationBefore an ultrasonic test can be undertaken, the object being tested must be adequately prepared. This preparation can include cleaning, demagnetizing, polishing and other surface preparation techniques depending on the purpose of the test.5. Test ProcedureThe test procedure will depend on the type and geometry of the object being tested. Generally speaking, the operator of the test will use a circular scanning motion in order to scan the entire surface of the object. The ultrasound receiver should be set to the correct threshold level and any special instructions from the manufacturers should be observed.6. Interpretation of ResultsThe results of the ultrasonic test must then be interpreted. This interpretation should be done according to the accepted standards for ultrasonic testing.7. Record KeepingA record should be kept of the test and its results. This is necessary to enable the results of the test to be compared over time in order to assess any potential changes in the material. This is especially important when testing components which are subject to environmental degradation.ConclusionUltrasonic testing of titanium and titanium alloy processing products is a reliable and effective way of detecting structural defects and other material flaws. The test must be conducted in a safe manner and all equipment used must conform to the relevant standards. The test procedure also requires a certain degree of preparation and the results should be interpreted in accordance with accepted standards. Overall, ultrasonic testing is an effective and reliable means of detecting structural defects and other material flaws in titanium and titanium alloy processing products.