Engineering Research & Field Notes

Technical Insights & Signal Physics

Deterministic signal processing derivations, Acoustic Emission filtering algorithms, and static asset integrity models from our Tampere engineering facility.

Signal Processing & Noise Rejection Sep 23, 2026 7 min read Published Paper

Overcoming the "Sunny Day" Trap: How We Filter Operational Noise Out of Acoustic Emission Telemetry

A deep engineering analysis on eliminating the "weather delay trap" in field NDT. We break down the mathematics of separating authentic micro-crack stress waves from environmental and pump noise using real-time RA-value thresholds, planar arrival-time validation (cs ≈ 3,200 m/s), and hardware-assisted spectral centroid tracking.

Stage 1: RA-Value Boundary (RA ≤ 8.0 μs/mV)
Stage 2: Planar ToA Wave Speed Limits (|Δtij| ≤ Dij/cs)
Stage 3: Bandpass Centroid (150 – 380 kHz)
Focus: Carbon Steel Storage Tanks & Static Pressure Vessels Read Full Engineering Paper
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6 Technical Papers
Signal Processing Sep 23, 2026

Overcoming the "Sunny Day" Trap: Operational Noise Rejection

Deterministic filtering rules using RA values, arrival-time deltas, and spectral centroids to separate structural micro-cracking from continuous flow chatter and rainfall.

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Acoustic Physics October 06, 2026

Energy vs. Amplitude: Why Traditional dB Thresholds Miss Micro-Cracks

Why high-energy micro-fissuring bursts can hide below standard decibel alarms, and how MARSE energy integration captures active damage propagation up to 120 days earlier.

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Storage Tank Integrity October 20, 2026

Continuous vs. Periodic: The True Cost of Taking API 653 Tanks Out of Service

Evaluating the contractor day-rates, degassing hazards, and lost throughput of internal tank entry against non-intrusive in-service acoustic emission surveillance.

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Asset Integrity Economics November 03, 2026

Quantifying Integrity ROI: Preventing €2.4M Downstream Failures

Empirical financial models quantifying the avoidance of catastrophic pressure vessel failure, unplanned flare shutdowns, and insurance premium escalation via early acoustic warning.

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Explainable Industrial AI November 17, 2026

Demystifying Industrial AI: Why Reliability Engineers Need Explainable Models

Why black-box neural networks fail to achieve adoption on high-hazard sites, and how physics-constrained feature attribution directly maps AI outputs to API 581 RBI risk matrices.

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Sensor Fusion & IoT December 01, 2026

Multi-Modal Sensor Fusion: Unifying AE Ultrasound with Vibration & Thermal

Architecting edge gateways that fuse micro-crack acoustic emission (>100 kHz) with low-frequency triaxial accelerometer telemetry (<10 kHz) and thermal gradient monitoring.

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