What types of defects can be detected in a liquid penetrant test?
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What types of defects can be detected in a liquid penetrant test?
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- /Answer( any five) of the following 1. List the seven types of failure 2.Define die penetrant test 3.Suggest N.D.T.test for an internal defects of metal 4 Define pn juction diode 5. What is the behaviour of smart material (Ti-Br) alloy 6. What is the effect of plasticisers that added to polymerHow is the size of a flaw determined using ultrasonic inspection?The following are non-destructive tests which are considered useful for inspecting internal defects in materials or products(Choose all that apply) Sonic waves Transmission method (ultrasonic) Electrical method (Eddy current) Pulse reflection method (ultrasonic) Magnetic particle method X-ray examination
- What kind of defects or product characteristics can be detected by the Eddy-Current Testing?Q1/ A 2 kg of specimen has a ratio of 90 and 10 % wt (Pb and Sn alloy, respectively) is heated to 260° C and at the same temperature it is entirely a-phase solid solution. The alloy is melted to be liquid in a ratio of 50% while the rest is a-phase. This is achieved by either heating or replacement the alloy composition at a constant temperature. a- What is the temperature must be the sample heated? b- How much tin must be added to the sample (2 kg) at 260 °C to get this state?What are three commonly used test to measure the hardness related properties of materials?
- Q1/ A 2 kg of specimen has a ratio of 90 and 10 % wt (Pb and Sn alloy, respectively) is heated to 260° C and at the same temperature it is entirely a-phase solid solution. The alloy is melted to be liquid in a ratio of 50% while the rest is a-phase. This is achieved by either heating or replacement the alloy composition at a constant temperature. a- What is the temperature must be the sample heated? b- How much tin must be added to the sample (2 kg) at 260 °C to get this state? Composition (at% Sn) 20 40 60 80 100 327°C 600 300 Liquid 500 232°C 200 B+L 400 183°C 18.3 61.9 97.8 300 100 200 100 20 40 60 100 (PD) Composition (wt% Sn) (Sn) Temperature ("C) 8 Temperature ("F)why do we physically mark gauge length on the samples before the test even though the machine is measuring displacement for us.(Tensile Testing Machine) What is the effect of rate of loading, what is a soft start what is its importance?6. Gas turbine engine parts can be successfully inspected only for surface defects by: O Visual testing. Ultrasonic testing. O Radiography testing. O Eddy current testing.
- Describe the six most common tests used to identify material propertiesWhat are the main features of the Rockwell Hardness Test?Select All the correct statements from below. a. If the averaged distance between partial dislocations for material A observed under TEM is smaller than material B, the estimated stacking fault energy of material A is lower than material B. b. K_IC is a material property that doesn't change with testing conditions c. The main difference between high cycle fatigue and low cycle fatigue is the difference in the number of cycles to failure d. A negative R value in fatigue test indicate the minimum stress is compressive in nature