ASTM E1118/E1118M-16 (2020) PDF

Full title and description

ASTM E1118/E1118M-16 (2020) — Standard Practice for Acoustic Emission Examination of Reinforced Thermosetting Resin Pipe (RTRP). This practice provides procedures and guidelines for using acoustic emission (AE) techniques to examine and monitor the structural integrity of reinforced thermosetting resin piping, including lined or unlined pipe, fittings, joints, and piping systems constructed with fiberglass or carbon-fiber reinforcements.

Abstract

This practice describes AE instrumentation, test configurations, data acquisition, event characterization, localization, and interpretation methods to detect damage mechanisms in RTRP (resin cracking, fiber debonding/pullout/breakage, delamination, and bond/thread failures). It is intended for both new and in-service RTRP and is suitable for on-line monitoring with minimal process disruption; detected locations should be verified by complementary NDT methods as needed.

General information

• Status: Active (current edition approved/reissued 2020; designation E1118/E1118M-16 (2020)).
• Publication date: Current edition approved June 1, 2020 (published mid‑2020).
• Publisher: ASTM International.
• ICS / categories: Plastics pipes — ICS 23.040.20 (related to piping and RTRP applications).
• Edition / version: E1118/E1118M‑16 (2016 original/technical edition; current edition reapproved/issued 2020).
• Number of pages: 13 pages.

Scope

The practice covers AE examination and monitoring of reinforced thermosetting resin pipe (RTRP) to determine structural integrity for pipe fabricated with fiberglass or carbon‑fiber reinforcements (reinforcing content >15% by weight), for tests below about 35 MPa absolute (≈5000 psia), and for pipe up to and including approximately 0.6 m (24 in.) in diameter. It applies to component, assembly, and in‑service examinations but excludes repair procedures and some larger‑diameter test configurations outside this practice. Values are provided in both SI and inch‑pound units (each system used independently).

Key topics and requirements

• AE instrumentation and sensor mounting recommendations, including preamplifier and threshold considerations.
• Detection and interpretation of AE signatures for damage modes: resin cracking, fiber debonding, fiber pullout/breakage, delamination, and joint failures.
• Event characterization, localization techniques, and criteria for differentiating relevant structural signals from background/noise.
• Guidance on test configurations: pressure ranges, test types (proof testing, on‑line monitoring), and limitations (diameter and material constraints).
• Recommendation to corroborate AE findings with other NDT methods (visual, ultrasonic, dye penetrant) before repair.

Typical use and users

Used by nondestructive testing (NDT) engineers, pipeline and process‑piping owners/operators, RTRP manufacturers, inspection and test agencies, and researchers focused on composite pipe integrity. Typical applications include factory proof testing, installation acceptance testing, and in‑service monitoring for corrosion/structural damage detection and localization.

Related standards

References and related documents commonly cited with this practice include terminology and AE practice standards and NDT agency specifications such as D883 (plastics terminology), E543 (specification for agencies performing NDT), E650 (guide for mounting piezoelectric AE sensors), E750 (practice for characterizing AE instrumentation), and other AE and NDT practices. Users should consult those documents for instrumentation, calibration, and terminology details.

Keywords

Acoustic emission, AE monitoring, RTRP, reinforced thermosetting resin pipe, fiberglass pipe, carbon‑fiber pipe, Felicity ratio, event localization, nondestructive testing, proof testing.

FAQ

Q: What is this standard?

A: A standard practice from ASTM that provides methods and guidance for performing acoustic emission (AE) examinations on reinforced thermosetting resin pipe (RTRP) to assess structural integrity.

Q: What does it cover?

A: It covers AE instrumentation, sensor mounting, data acquisition, event detection and characterization, localization, interpretation of AE from common composite failure modes, applicable pressure and diameter limits, and recommendations to verify AE findings with other NDT methods.

Q: Who typically uses it?

A: NDT practitioners, inspection agencies, RTRP manufacturers, pipeline owners/operators, and engineers responsible for asset integrity and acceptance testing.

Q: Is it current or superseded?

A: The designation E1118/E1118M‑16 indicates the 2016 technical edition; the current edition was reapproved/issued in 2020 (designation shown as 2016 (2020)). Users should verify any subsequent revisions or work items with ASTM for the very latest status.

Q: Is it part of a series?

A: It is part of ASTM Committee E07 (Nondestructive Testing) practices for acoustic emission and is used alongside related AE and NDT standards (for example E750, E650, E543, and terminology standards).

Q: What are the key keywords?

A: Acoustic emission, RTRP, nondestructive testing, fiberglass pipe, carbon fiber, event localization, Felicity ratio.