Which of the following are considered applications of ultrasonic testing?
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Metallurgical Engineering · all questionsMetallurgical Testing and Inspection
Metallurgical Testing and Inspection
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Necking occurs in material at
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Match the examination/inspection technique(s) in the following cases:
| P. Internal crack developed in a component due to faulty metal flow conditions during its forging. | 1. X-ray diffraction |
| Q. Segregation in steel casting. | 2. Dye penetrant test |
| R. Hydride formation in a Tia Boy component due to its exposure to H2 at high temperature. | 3. Sulphur printing |
| S. Surface cracks formed on a car body during its manufacture. | 4. Radiography |
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When a longitudinal wave sound beam passes through an acoustic interface at some angle other than zero degrees
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Hydrogen embrittled steels samples can exhibit
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The ductile to brittle transition temperature of decreases by the addition of
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The resolution of an optical microscope is of the order of
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How is the wavelength of scattered radiation compared to the primary beam?
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A 150 mm long cylinderical rod having a diameter of 100 mm contains six microvoids which are situated at radial distances of 5 mm, 8 mm, 12 mm. 20 mm, 30 mm, 36 mm respectively, on a given r-z plane. Along the length (z-direction) of the rod, the voids are spaced uniformly. The specimen is to be tested by an ultrasonic cylinderical probe, 7.5 mm in diameter: The maximum number of flows, that can be detected in a single measurement by placing the probe at one end of the rod (flat surface) is
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Pyramid type diamond indenter is used in
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A tensile specimen was deformed to a true strain of 0.405. The change in the gauge length was 5 mm. The final gauge length of the specimen, in mm, is
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Rockwell hardness on the 'C' scale is measured using an indentor with a
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Match the suitability of non-destructive testing method in Group I for the detection of defects listed in Group II.
| Group I | Group II |
| P. Magnetic particle inspection | 1. Surface crack in martensitic stainless steels |
| Q. X-ray radiography | 2. Surface crack in austenitic stainless steels |
| R. Dye penetrant test | 3. Hairline crack in aluminium |
| S. Ultrasonic testing | 4. Inclusion in steels |
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Brittle fracture is more dangerous than ductile fracture because
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The energy dispersive spectrometer (EDS) in an electron microscope does chemical analysis by analysing the energy of
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If the surface crack causing fracture in a brittle material is made twice as deep, the fracture strength will
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A penetrant process in which excess penetrant is removed with an organic solvent is called
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The boundary between slip and unslip plane is called
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Match the NDT method in Group 1 with the items in Group 2.
| Group 1 | Group 2 |
| P. Ultrasonic testing | 1. Core shift in castings |
| Q. Dye penetrant testing | 2. Surface defects in HSLA welds |
| R. Magnetic particle inspection | 3. Fillet welds |
| S. Radiography | 4. Hot crack in austenitic SS welds |
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Q100
Open questionThe technique (s) which can be used for the direct observation of dislocations is (are)
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