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+---- Thread: ASTM A435 / A435M - 90(2007) Standard Specification for Straight-Beam Ultrasonic Exam (/thread-33378.html)
ASTM A435 / A435M - 90(2007) Standard Specification for Straight-Beam Ultrasonic Exam - mybest - 02-04-2012
ASTM A435 / A435M - 90(2007) Standard Specification for Straight-Beam Ultrasonic Examination of Steel Plates
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This specification covers the standard procedure and acceptance for straight-beam, pulse-echo, ultrasonic examination of rolled fully killed carbon and alloy steel plates. The equipment shall be of the pulse-echo straight beam type. Nondestructive examination of the material shall be conducted in an area free of operations that interfere with proper functioning of the equipment. The test shall be done by one of the following methods: direct contact, immersion, or liquid column coupling. Ultrasonic examination shall be made on either major surface of the plate. Grid scanning shall be continuous along perpendicular grid lines or shall be continuous along parallel paths, transverse to the major plate axis, or shall be continuous along parallel paths, parallel to the major plate axis, or smaller centers. Any discontinuity indication causing a total loss of back reflection which cannot be contained within a circle is unacceptable.
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