Interpretable Acoustic-Emission Leak Detection and ED+MLE-Based Regional Localization in Thin Aluminum-Alloy Plates Under Vacuum Pressure-Difference Excitation.

Wei Sun, Jian Zhang, Tao Zhang, Xuyan Hou

Abstract read

In one paragraph

Article in Sensors (Basel, Switzerland), 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

0numbers the graph read from it

0cells of the map it votes in

0citing papers in PubMed

–field-weighted citation impact

1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

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3 · Its place in the literature

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0 citing papers in PubMed.

No citing paper in PubMed yet.

4 · The record

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5 · Who and what money

Authors and funding

4 authors.

Wei SunSchool of Mechatronics Engineering, Harbin Institute of Technology, Harbin 150001, China.

Jian ZhangSchool of Mechanical and Electrical Engineering, Northeast Forestry University, Harbin 150040, China.ORCID 0000-0003-4476-171X

Tao ZhangSchool of Mechanical and Electrical Engineering, Northeast Forestry University, Harbin 150040, China.

Xuyan HouSchool of Mechatronics Engineering, Harbin Institute of Technology, Harbin 150001, China.ORCID 0000-0002-6798-6113

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Continuous gas leakage in thin-walled sealed spacecraft structures produces sustained broadband acoustic-emission (AE) signals from which reliable first-arrival picking is difficult. This study presents an interpretable two-stage workflow that decouples leak screening from regional localization. Experiments used a 500 × 500 × 2.5 mm 3A21 aluminum-alloy plate with eight piezoelectric AE sensors under 0.1 MPa pressure difference. Intact, circular-hole, and slit-leak conditions were each tested three times with a 0.5-1.5 s steady-state window. Leak screening employed the 20-200 kHz mean spectral amplitude (Hann window). A provisional threshold of 0.85, set from three intact records, separated all leak records from intact controls. Regional localization used relative logarithmic RMS amplitudes in an energy-decay plus maximum-likelihood-estimation (ED+MLE) cost function on a 10 mm grid. The equivalent attenuation coefficient, empirically selected as 2.3 m

Indexed as

acoustic emissionleak monitoringspacecraft sealed structurethin-walled aluminum-alloy plate

Identifiers

PMID42740078

DOI10.3390/s26175458

PMCPMC13568264

What OpenQuestion holds

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.