GB/T 23904-2025 Active National standards

GB/T 23904-2025 Non-destructive testing—Test method for ultrasonic testing by surface wave

GB/T 23904-2025 Non-destructive testing—Test method for ultrasonic testing by surface wave

Publish Date: 2025-05-30 Implement Date: 2025-09-01 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

Basic Information

Standard Code: GB/T 23904-2025

Standard Type: National standards

Standard Status: Active

is_force_gb: no

CCS Name: Basic standards and general methods

ICS Name: Non-destructive testing

Publish Date: 2025-05-30

Implement Date: 2025-09-01

Pages: 20 pages

Scope

This document specifies a general method for contact-type pulsed reflection ultrasonic surface wave detection to detect surface defects in metal materials.
This document is applicable to workpieces with a surface roughness Ra not exceeding 6.3 μm and a thickness not less than 5 times the wavelength of the surface wave used for detection. For curved workpieces such as cylinders, the radius of curvature should be not less than 22.5 mm.
Note: The wavelength of the surface wave used for detection is calculated based on the theoretical surface wave speed of the workpiece divided by the nominal frequency of the surface wave probe used for detection.

Development Information

Word Count: 21 Thousand words Pages: 20 pages

Replace the following standards

GB/T 23904-2009 Non-destructive testing—Test method for ultrasonic testing by surface wave

Referenced Standards

GB/T 12604.1-2005 Non-destructive testing—Terminology—Terms used in ultrasonic testing GB/T 12604.1-2020 Non-destructive testing—Terminology—Ultrasonic testing GB/T 27664.1-2011 Non-destructive testing—Characterization and verification of ultrasonic test equipment—Part 1:Instruments GB/T 27664.2-2011 Non-destructive testing—Characterization and verification of ultrasonic test equipment—Part 2:Probes GB/T 27664.3-2012 Non-destructive testing—Characterization and verification of ultrasonic test equipment—Part 3:Combined equipment GB/T 27664.1-2026 Non-destructive testing instruments—Characterization and verification of ultrasonic test equipment—Part 1:Instruments GB/T 27664.2-2026 Non-destructive testing instruments—Characterization and verification of ultrasonic test equipment—Part 2:Probes GB/T 27664.3-2026 Non-destructive testing instruments—Characterization and verification of ultrasonic test equipment—Part 3:Combined equipment

Related Standards

GB/T 7704-1987 Replaced

GB/T 7704-1987 Residual stress measurement by X-ray

Publish Date: 1987-05-04

GB/T 11343-1989 Replaced

GB/T 11343-1989 Ultrasonic angle beam examination by the contact method

Publish Date: 1989-05-08

GB/T 11344-1989 Replaced

GB/T 11344-1989 Measuring thickness by ultrasonic pulse-echo contact method

Publish Date: 1989-05-08

GB/T 2611-1992 Replaced

GB/T 2611-1992 General requirements for testing machines

Publish Date: 1992-08-29

GB/T 15823-1995 Replaced

GB/T 15823-1995 Examination for helium leak detecting

Publish Date: 1995-12-14

GB/T 12604.9-1996 Replaced

GB/T 12604.9-1996 Terminology for nondestructive testing—Infrared testing

Publish Date: 1996-04-10