ASTM E587-15 (2025) PDF

Full title and description

Standard Practice for Ultrasonic Angle‑Beam Contact Testing — ASTM E587‑15 provides recommended procedures and practical guidance for performing ultrasonic angle‑beam pulse‑echo contact examinations using continuously coupled angular incident ultrasonic vibrations. It explains transducer/wedge configurations, wave modes (longitudinal, shear, Lamb, Rayleigh), coupling, beam angles, and basic interpretation considerations for nondestructive evaluation of metallic and other materials.

Abstract

This practice describes the angle‑beam contact ultrasonic technique (pulse‑echo) for detection and evaluation of subsurface reflectors. It covers fundamentals of wave generation using piezoelectric transducers and wedges, selection of incident angles, expected wave modes, limitations (surface wave and Lamb‑wave effects in thin sections), and guidance for developing examination procedures suited to the material and geometry under test. The document is concise (nine pages) and intended as a procedural reference rather than a full qualification scheme.

General information

• Status: Current practice with later reapproval activity and periodic review by ASTM Committee E07; historically withdrawn/replaced entries exist for earlier non‑current printings.
• Publication date: Original approval/publication: December 1, 2015; current edition approved June 1, 2020 (published July 2020); listed/reaffirmed with a document date of June 1, 2025 in document records.
• Publisher: ASTM International.
• ICS / categories: Non‑destructive testing — ICS 19.100; Non‑destructive testing of metals 77.040.20.
• Edition / version: Designation E587‑15 with reaffirmation notation (E587‑15(2020) / E0587‑15R20 reported); active under Subcommittee E07.06 and subject to periodic 5‑year review.
• Number of pages: 9 pages.

Scope

This practice covers ultrasonic examination of materials by the pulse‑echo technique using continuously coupled angular incident ultrasonic vibrations (angle‑beam contact testing). It is applicable for development of examination procedures agreed upon by users and provides guidance on wave generation, selection of wedge/transducer angles, coupling, and expected responses; it does not cover personnel qualification schemes or all safety aspects, which must be addressed separately.

Key topics and requirements

• Principles of angle‑beam pulse‑echo contact testing and transducer/wedge interaction with the test surface.
• Selection of incident angles to generate desired refracted longitudinal or shear beams and discussion of angle ranges where mode coexistence (e.g., 55° longitudinal and 29° shear) occurs.
• Recognition and implications of Lamb waves and Rayleigh (surface) waves in thin or near‑surface examinations.
• Guidance on coupling, wedges, frequency selection, and beam path considerations for procedure development.
• Limitations of the method and statement that users are responsible for establishing appropriate safety and health practices.

Typical use and users

Used by nondestructive testing (NDT) engineers, ultrasonic technicians, inspection services, fabrication and maintenance organizations, and inspectors tasked with flaw detection and characterization in metallic components, welds, pipes, tubing, and thin‑section parts where angle‑beam interrogation is advantageous. It is a practical reference for procedure development rather than a personnel certification standard.

Related standards

Commonly referenced and used alongside other ultrasonic and NDT standards and guides such as ASTM E164 (ultrasonic contact examination of weldments), ASTM E797 (thickness measurement by manual pulse‑echo), ASTM E213 (pipe and tubing UT), ASTM E317 (instrument performance), ASTM E1065 (search unit evaluation), and other ASTM/ASME/NDT guidance documents that address qualification, calibration, and acceptance criteria.

Keywords

angle beam; contact ultrasonic method; pulse‑echo; Lamb waves; Rayleigh waves; longitudinal waves; shear waves; nondestructive examination; ultrasonic examination; NDT.

FAQ

Q: What is this standard?

A: ASTM E587‑15 is a practice (procedural guidance) for performing ultrasonic angle‑beam contact (pulse‑echo) testing of materials using continuously coupled angular incident ultrasonic vibrations.

Q: What does it cover?

A: It covers fundamentals and recommended procedures for angle‑beam contact testing: transducer/wedge selection, beam angles and modes, coupling, limitations such as Lamb and surface waves, and guidance for developing specific examination procedures. It does not replace qualification or safety requirements.

Q: Who typically uses it?

A: NDT technicians, inspection engineers, inspection service providers, and others who write or perform ultrasonic angle‑beam inspections in manufacturing, fabrication, maintenance, and quality assurance settings.

Q: Is it current or superseded?

A: The original designation E587‑15 was approved in 2015; the practice was carried forward and noted with a 2020 approval/confirmation (E587‑15(2020) / E0587‑15R20) and appears in record listings with a 2025 reaffirmation/document date. The committee has also initiated a revision work item (WK91327) for the 5‑year review cycle, so users should check for any newer revisions or ballots.

Q: Is it part of a series?

A: It is part of ASTM Committee E07 (Non‑destructive Testing) publications and is commonly used together with other ASTM ultrasonic standards and guides that cover straight‑beam testing, weld examination, instrument performance, and probe characterization.

Q: What are the key keywords?

A: Angle beam, contact ultrasonic, pulse‑echo, Lamb waves, Rayleigh waves, longitudinal wave, shear wave, nondestructive testing, ultrasonic examination.