HS semi-circular ladder test block (HS test block) Ultrasonic standard test block

• GB / T18852-2002 Non-destructive testing Ultrasonic testing reference block for measuring the sound beam characteristics of contact probe
• This standard recommends two reference test blocks, the HS semi-circular step test block and the SDH horizontal hole test block. This standard provides a measurement method for the sound field generated by a probe used in contact flaw detection in a solid body. This standard is applicable to probes for testing forged or rolled steel, aluminum alloy or titanium alloy products. The frequency range of the probe applicable to this standard is 1MHz-15MHz. 1MHz-15MHz is most suitable for the detection
• HS semi-circular ladder test block (HS test block), the test block should be placed on an appropriate wooden frame when used as a support The wooden frame of the support can neither damage the test block nor generate any damping.
• The SHD horizontal hole test block is only used when the test block is used to adjust the detection sensitivity of the longitudinal wave straight probe. Longitudinal wave Straight probe flaw detection allows three kinds of Φ3, Φ4, Φ6 equivalent flat-bottom hole sensitivity.

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