Question B5 A 10-mm thick Al 2024-T4 plate has a 5-mm by 5-mm slot running along the centre line as shown in Figure 2. T

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Question B5 A 10 Mm Thick Al 2024 T4 Plate Has A 5 Mm By 5 Mm Slot Running Along The Centre Line As Shown In Figure 2 T 1 (205.4 KiB) Viewed 17 times

Question B5 A 10-mm thick Al 2024-T4 plate has a 5-mm by 5-mm slot running along the centre line as shown in Figure 2. The plate is to be inspected by ultrasonic inspection using angle beam technique. The angle beam probe uses a 5 MHz crystal, 6.35 mm in diameter, mounted on an acrylic wedge. Left Side Right Side Centre Line Figure 2 (a) Calculate the incident angle of the acrylic wedge such that the probe will produce a 70° shear wave. (2 marks) (b) Calculate the full-skip distance and V-path distance. (3 marks) (c) An indication is found with a sound path distance of 43.86-mm. The probe beam index point is positioned 14.2-mm from the Centre Line. With the aid of a diagram, illustrate the possible location of the discontinuity. (3 marks) (d) Explain which type of indication is described in part (c) and if straight beam method can produce the same indication. (2 marks) - End of Section B -