ISO 10375-1997 PDF

Full title and description

ISO 10375:1997 — Non‑destructive testing — Ultrasonic inspection — Characterization of search unit and sound field. The standard defines methods for characterizing ultrasonic search units (probes/transducers) and their sound field for use in ultrasonic inspection and laboratory measurements.

Abstract

ISO 10375:1997 specifies parameters and measurement procedures to characterise ultrasonic probes and their free‑field sound beams (frequency limits, centre frequency, bandwidth, near‑field length, beam profile, sensitivity and electrical impedance) to provide a consistent basis for performance evaluation across laboratories and inspection activities. It was published in 1997 and later withdrawn; several national bodies adopted or adapted its content.

General information

• Status: Withdrawn (standard was cancelled by ISO; withdrawal recorded 25 January 2022).
• Publication date: 10 April 1997.
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: 19.100 — Non‑destructive testing.
• Edition / version: Edition 1 (1997).
• Number of pages: 17 pages (typical publication length reported by national distributors / catalogs).

Key bibliographic and lifecycle details are recorded on the ISO bibliographic record and in national standards catalogues (publication 1997; withdrawal stage 95.99 in 2022).

Scope

Defines test methods and technical parameters for ultrasonic probes and their sound fields in liquid (free‑field) for nominal probe frequencies approximately 0.5 MHz to 15 MHz (straight and angle probes; surface wave probes are excluded). The standard establishes measurement procedures (time/frequency response, near‑field length, half‑power beamwidth, beam cross‑section amplitude distribution, electrical impedance, relative sensitivity) to enable consistent probe characterization but does not itself set acceptance criteria for probe performance.

Key topics and requirements

• Definition of probe/sensor performance parameters: centre/upper/lower frequency, bandwidth, wavelength, and time/frequency responses.
• Methods to measure near‑field length and beam divergence (half‑power angles) and beam cross‑section amplitude distribution in a liquid medium.
• Procedures for measuring electrical impedance and relative sensitivity of probes independent of the ultrasonic instrument.
• Recommended measurement setups and reference conditions to improve repeatability between laboratories.
• Application scope limited to through‑transmission/immersion (free‑field) measurements for nominal 0.5–15 MHz probes; excludes surface‑wave probes and some contact‑field measurements unless specified.

Typical use and users

Used by ultrasonic NDT laboratories, probe manufacturers, inspection equipment suppliers, and quality/inspection engineers to: (a) verify and document probe performance; (b) establish baseline probe characteristics for procurement and acceptance; (c) support traceable measurements and inter‑laboratory comparisons; and (d) assist in specifying probe selection and measurement setup for specific inspection tasks. Practical users include NDT service companies, OEM inspection groups, research labs and national standards bodies.

Related standards

ISO 10375:1997 has been adopted or used as the basis for national standards (for example GB/T 18694‑2002 — Non‑destructive testing — Ultrasonic inspection — Characterization of search unit and sound field). Other standards relevant to ultrasonic probe calibration and general UT practice include ISO 2400 (reference/calibration block specifications) and the ISO series on ultrasonic testing general principles (e.g., ISO 16810 and later revisions). These documents are commonly referenced together when establishing measurement setups and calibration procedures.

Keywords

ultrasonic testing, non‑destructive testing, probe characterization, transducer, sound field, beam profile, near‑field, bandwidth, sensitivity, probe calibration.

FAQ

Q: What is this standard?

A: ISO 10375:1997 is an ISO International Standard that defines methods and parameters for characterizing ultrasonic search units (probes) and their sound fields used in ultrasonic inspection.

Q: What does it cover?

A: It covers technical parameters (frequency, bandwidth, near‑field length, beam angles and beam cross‑section amplitude distribution), measurement procedures in liquid/free‑field conditions, and electrical probe characteristics; it does not set pass/fail acceptance criteria.

Q: Who typically uses it?

A: NDT laboratories, probe manufacturers, inspection equipment vendors, and inspection engineers use it to document probe performance, calibrate equipment, and support inter‑laboratory comparison. (Practical users include industrial inspection teams, research labs and standards bodies.)

Q: Is it current or superseded?

A: ISO 10375:1997 has been withdrawn by ISO (withdrawal recorded 25 January 2022). Its content has been adopted or adapted by some national standards (for example GB/T 18694‑2002). Users should consult current national or ISO standards for up‑to‑date methods and any newer replacements.

Q: Is it part of a series?

A: It belongs to the body of ISO standards produced by ISO/TC 135 (Non‑destructive testing), subcommittee SC 3 (ultrasonic testing). It is commonly used alongside related ISO standards on ultrasonic testing procedures and calibration (for example ISO 2400 and the ISO general principles for ultrasonic testing).

Q: What are the key keywords?

A: Ultrasonic testing, probe/transducer, sound field, beam profile, calibration, non‑destructive testing, sensitivity, impedance.