Comprehensive Methodologies Directory

NDT Methods & Technical Standards Guide

Explore 17+ non-destructive testing methodologies cataloged with OEM compatibility, damage mechanism targeting, and code specifications (ASME, API, AWS, ISO).

Standard Industrial Asset Integrity LifecycleChronological workflow from engineering design to field execution & FFS compliance
1

1. Design & Wall Sizing

Calculate nominal wall thickness ($t$), pressure limits, & tank/tube geometry per ASME B31.3 & API 650.

2

2. Scope & RFQ Bidding

Select 1-click inspection scope templates (CUI, MFL, Tubes) & post RFQs to certified NDT agencies.

3

3. NDT Field Execution

Calibrate PAUT focal laws, Snell's Law beam angles, & TCG sensitivity curves for 100% volume coverage.

4

4. FFS & Remaining Life

Compute API 570 $t_min$ corrosion alerts, corrosion rate ($CR$), & remaining useful life ($RL$).

Core(6)

Ultrasonic Testing

Ultrasonic Testing

Advanced thickness measurement and volumetric flaw detection using high-frequency pulse-echo sound waves.

Top ManufacturersUT
Evident ScientificWaygate TechnologiesSonatestZetecInnerspec Technologies
Radiographic Testing

Radiographic Testing

High-energy X-ray or Gamma-ray imaging for total volumetric density analysis and internal defect detection.

Top ManufacturersRT
Carestream NDTWaygate TechnologiesFujifilm NDTComet GroupVisiConsult
Eddy Current Testing

Eddy Current Testing

Near-surface flaw detection and material sorting using electromagnetic induction for high-speed alloy assessment.

Top ManufacturersET
Eddyfi TechnologiesEvident ScientificZetecEther NDERohmann
Magnetic Particle Testing

Magnetic Particle Testing

Surface and near-surface discontinuity detection in ferromagnetic materials using magnetic flux fields and particle indicators.

Top ManufacturersMT
MagnafluxParker LaboratoriesJohnson & AllenBaugh & Weedon
Liquid Penetrant Testing

Liquid Penetrant Testing

Detection of surface-breaking defects in non-porous materials through capillary action of visible or fluorescent dye penetrants.

Top ManufacturersPT
MagnafluxSherwin IncorporatedMet-L-ChekChemetall
Visual Testing

Visual Testing

Foundational direct inspection method assessing surface finish, weld profile, corrosion, alignment, and physical damage.

Top ManufacturersVT
Evident ScientificFluke CorporationWaygate TechnologiesGradient Lens

Advanced(8)

Phased Array Ultrasonic Testing

Phased Array Ultrasonic Testing

Multi-element beam steering and focus control for high-speed, high-resolution cross-sectional imaging of complex geometries.

Top ManufacturersPAUT
Evident ScientificZetecEddyfi TechnologiesSonatest
Time-of-Flight Diffraction

Time-of-Flight Diffraction

Precision diffraction-based flaw sizing and monitoring, providing high-accuracy weld integrity assessments.

Top ManufacturersTOFD
SonatestEvident ScientificZetecWaygate Technologies
Guided Wave Testing

Guided Wave Testing

Long-range screening of pipelines and structural piping using low-frequency ultrasonic waves guided by structural boundaries.

Top ManufacturersGWT
Guided Ultrasonics (GUL)Plant IntegrityTeletestFBS Inc
Alternating Current Field Measurement

Alternating Current Field Measurement

Electromagnetic technique for detecting and sizing surface-breaking cracks in conductive welds, even through thick coatings.

Top ManufacturersACFM
TSC SubseaEddyfi Technologies
Pulsed Eddy Current

Pulsed Eddy Current

Measurement of wall thickness through insulation, fireproofing, or coatings to screen for Corrosion Under Insulation (CUI).

Top ManufacturersPEC
Eddyfi TechnologiesEther NDEMaxwell NDTKromek
Ground Penetrating Radar

Ground Penetrating Radar

Subsurface imaging method projecting electromagnetic radar pulses to detect rebar, conduits, and voids in concrete or soil structures.

Top ManufacturersGPR
Sensors & SoftwareGSSIMALA GPRIDS GeoRadar
Acoustic Pulse Reflectometry

Acoustic Pulse Reflectometry

Ultra-fast acoustic wave inspection method for non-destructively screening tubes of any material (ferrous, non-ferrous, finned, or graphite) up to 4 inches in diameter for leaks, blockages, erosion, and pitting in seconds per tube.

Top ManufacturersAPR
SWIS Ltd (MachOne)Talcyon
Electro Magnetic Acoustic Transducer

Electro Magnetic Acoustic Transducer

Non-contact electromagnetic ultrasonic testing for high-temperature corrosion mapping, boiler tube inspection, and dry testing.

Top ManufacturersEMAT
Innerspec TechnologiesEddyfi TechnologiesSonatest

Visual(2)

Certified Welding Inspection & Quality Oversight

Certified Welding Inspection & Quality Oversight

AWS CWI / CSWIP Certified Welding Inspection supervising weld fit-up, root pass integrity, filler metal certification, WPS/PQR procedure validation, and post-weld NDT quality auditing across structural steel, pressure vessels, and process piping.

Top ManufacturersCWI / CWI-VT
Hobart BrothersLincoln ElectricMiller ElectricESABFronius
Remote Visual Inspection

Remote Visual Inspection

High-definition internal visual assessment of boilers, turbines, and pipes using robotic crawlers and videoborescopes.

Top ManufacturersRVI
Waygate TechnologiesEvident ScientificFlyabilityEddyfi Technologies

Radiography(4)

Computed Radiography

Computed Radiography

Filmless radiography utilizing photostimulable phosphor imaging plates to capture and digitize internal component geometry.

Top ManufacturersCR
Carestream NDTWaygate TechnologiesDürr NDTKUBTEC
Digital Radiography

Digital Radiography

Real-time radiographic imaging using flat panel detectors (DDA) for immediate film-free weld and component inspection.

Top ManufacturersDR
Waygate TechnologiesCarestream NDTVisiConsultVarex Imaging
Neutron Radiographic Testing

Neutron Radiographic Testing

High-penetration thermal neutron beam imaging to evaluate internal components, contrast organic matter, or view shielded materials.

Top ManufacturersNR
Phoenix LLCNtechHFIR
Computed Tomography

Computed Tomography

Advanced 3D X-ray radiographic scanning providing cross-sectional volumetric views of metallic and composite components.

Top ManufacturersCT
Waygate TechnologiesNikon MetrologyYxlon (Comet)VisiConsult

Specialized(14)

Magnetic Flux Leakage

Magnetic Flux Leakage

High-speed tank floor and pipeline scanning for the detection of underside corrosion and volumetric wall loss.

Top ManufacturersMFL
Eddyfi TechnologiesJIREH IndustriesMFE EnterprisesROSEN Group
Vibration Analysis

Vibration Analysis

Condition monitoring of rotating machinery using vibration measurement and spectrum diagnostics.

Top ManufacturersVA
Emerson (CSI)Fluke CorporationSKFBently Nevada
Acoustic Emission Testing

Acoustic Emission Testing

Continuous passive monitoring of transient elastic waves generated by rapid stress release from growing cracks or leaks.

Top ManufacturersAE
Mistras GroupVallen SystemePAC Acoustic
Leak Testing

Leak Testing

Detection and localization of envelope containment breaches using bubble, pressure change, or helium tracer gas sniffers.

Top ManufacturersLT
InficonPfeiffer VacuumLeyboldAgilent
Infrared Thermography

Infrared Thermography

Non-contact temperature distribution analysis to detect thermal anomalies, insulation voids, and structural delaminations.

Top ManufacturersIR
FLIR SystemsFluke CorporationTestoOptris
Laser Testing Methods

Laser Testing Methods

High-precision surface profiling, shearography, and holography using laser alignment systems to detect micro-deformations.

Top ManufacturersLM
Dantec DynamicsMicro-EpsilonKeyenceFARO Technologies
Microwave Testing

Microwave Testing

High-frequency electromagnetic technique scanning composite and ceramic structures for internal voids, delamination, and moisture.

Top ManufacturersMW
EvisiveKeyenceAnritsu
Pressure Safety Valve Testing & Recertification

Pressure Safety Valve Testing & Recertification

Comprehensive pop-pressure testing, seat tightness evaluation, and body NDT inspection for Pressure Relief Valves (PRV) and Pressure Safety Valves (PSV).

Top ManufacturersPSV / PRV
Emerson (Farris/Crosby)Baker Hughes (Consolidated)LeserPentairVentil
Internal Rotary Inspection System

Internal Rotary Inspection System

Precision ultrasonic immersion testing technique for scanning the internal and external wall integrity of heat exchanger tubes.

Top ManufacturersIRIS
Eddyfi TechnologiesEvident ScientificWaygate Technologies
Remote Field Electromagnetic Technique

Remote Field Electromagnetic Technique

Electromagnetic NDT method optimized for scanning carbon steel and ferromagnetic tubes from the inside.

Top ManufacturersRFET
Eddyfi TechnologiesZetecRussell NDE
Near Field Testing

Near Field Testing

High-speed electromagnetic testing method for detecting internal corrosion and pitting in carbon steel fin-fan tubes.

Top ManufacturersNFT
Eddyfi TechnologiesZetecRussell NDE
Dry-Coupled Ultrasonic Testing

Dry-Coupled Ultrasonic Testing

Dry-contact ultrasonic testing utilizing elastomeric film transducers for non-contaminating composite, wood, and metal testing.

Top ManufacturersDCUT
Innerspec TechnologiesEvident ScientificSonatest
Robotic & Automated NDT Systems

Robotic & Automated NDT Systems

Automated magnetic crawlers, pipe inspection crawlers, and robotic manipulators for hazardous and un-manned in-service inspections.

Top ManufacturersRobotic NDT
Eddyfi TechnologiesJIREH IndustriesWaygate TechnologiesGecko Robotics
Drone Visual Testing

Drone Visual Testing

Aerial and confined-space visual inspection using UAV platforms equipped with HD/4K cameras, LiDAR, and thermal sensors. Used for elevated, hazardous, or inaccessible structures such as flare stacks, towers, bridges, and offshore jackets without scaffolding.

Top ManufacturersDVT
FlyabilitySkydioPerceptoEasy Aerial
Free Engineering & Inspection Tools

⚡ Free Pipe Size, Thickness & UT Calculators

Select pipe sizes, calculate $t_min$ corrosion alerts per API 570, or compute ultrasonic beam angles.

Select Nominal Pipe Size (NPS):
NPS 2"Sch 40 (STD)
ASME B36.10M
Outer Diameter (OD)60.3 mm
Wall Thickness (t)3.91 mm
Inner Diameter (ID)52.48 mm
Weight per Meter5.44 kg/m
NPS 2"Sch 80 (XS)
ASME B36.10M
Outer Diameter (OD)60.3 mm
Wall Thickness (t)5.54 mm
Inner Diameter (ID)49.22 mm
Weight per Meter7.48 kg/m
NDT Predictive Maintenance

Asset Degradation & Remaining Useful Life (RUL)

How NDT techniques and AI Copilot quantify wall loss, calculate corrosion rates, and prevent catastrophic asset failures.

API 510 / 570 Standard

Corrosion Rate (CR)

CR = (t_initial - t_actual) / Years

Calculates annualized metal loss (mm/yr or mils/yr) between historical baseline and recent UT/PAUT readings.

API 653 Standard

Remaining Useful Life (RUL)

RUL = (t_actual - t_min) / CR

Determines years remaining before component reaches minimum allowable wall thickness (t_min) per ASME Section VIII.

AI Copilot

AI Degradation Forecasting

AI Predictive Degradation Model

AI Copilot ingests historical thickness logs, identifies localized pitting anomalies, and auto-schedules next inspection.

Primary NDT Techniques for Degradation Profiling

Standard non-destructive methods used to measure metal loss, wall thinning, and pitting.

Try AI Degradation Copilot
PAUTPhased Array Ultrasonic

High-density wall thickness grid mapping for storage tank shells and process pressure vessels.

PECPulsed Eddy Current

Corrosion Under Insulation (CUI) wall loss scanning without stripping insulation or fireproofing.

MFLMagnetic Flux Leakage

Rapid tank floor bottom plate metal-loss detection & underside pitting profiling.

TOFDTime-of-Flight Diffraction

Sub-millimeter vertical crack height sizing and environmental fatigue crack growth tracking.

AI-Assisted Technical Reference & Regulatory DisclaimerEducational & Reference Only

Technical articles, damage mechanism guides, inspection scopes, engineering formulas, and code summaries published across the NDT Exchange knowledge base are synthesized with the assistance of Artificial Intelligence (AI) and specialized industrial engineering reference models.

While all content is cross-referenced against authoritative standards (ASME, API, AWS, ISO, ASTM, NACE/AMPP), it is provided strictly for educational, preliminary scoping, and reference purposes. It does not constitute formal professional engineering advice, procedure qualifications (WPS/PQR), or certified inspection sign-offs. Always verify testing parameters, wall thickness sizing, and flaw acceptance criteria against the latest governing code edition and consult a certified Level III, Professional Engineer (PE), or certified inspector (API 510/570/653, AWS CWI, CSWIP) prior to field execution.