Reference standards containing a series of flat bottom holes of the same diameter at different depths in each block are called?

Related MCQs

• On the area-amplitude ultrasonic standard test blocks, the flat-bottomed holes in the blocks are:
• Which of the following is false concerning a magnetic field in and around a hollow conductor as compared to that of a solid conductor of the same outside diameter when both are of the same magnetic material, and when the applied current is the same?
• When comparing discontinuity echoes to equivalent flat bottom hole echoes in materials with similar impedance, surface finish and attenuation:
• What is the magnetic field strength at the surface of a 100 mm diameter bar as compared to that at the surface of a 50 mm diameter bar, each carrying 1000 amps of current?
• What is the magnetic field strength at the surface of a 25mm diameter bar as compared to that at the surface of a 50mm diameter bar, each carrying 1000 amps of current?
• What is the magnetic field strength at the surface of a 25 mm diameter bar as compared to that at the surface of a 50 mm diameter bar, each carrying 1000 amps of current?
• A common application of an aluminium block containing quench cracks is to:
• When inspecting a long bar with a longitudinal wave from one end, a series of additional echoes are seen immediately after the bottom surface reflection. these are most likely:
• The 50 mm diameter hole in an IIW block is used to:
• The ASTM penetrameter for a 25 mm thick test piece contains holes of what sizes?