Articles | TechKnowServ

Aug 7, 20205 min read

Phased Array, TOFD, and TFM/FMC: Comparing Methods for Weld Lack of Fusion Detection

Phased array ultrasonic testing (PAUT), time-of-flight diffraction (TOFD) ultrasonic testing and full matrix capture (FMC) / total...

Non-destructive Testing Inspector Performance Variations

Thomas R. Hay, Ph.D., P.E

Jul 24, 20205 min read

Non-destructive Testing Inspector Performance Variations

Description of Welded Joints and Inspection Process Non-destructive testing (NDT) inspector performance demonstration qualification (PDQ)...

Pipe Stiffener Crack Detection using Alternating Current Field Measurement and Phased Array Ultrason

noahtwersky

Jul 13, 20204 min read

Pipe Stiffener Crack Detection using Alternating Current Field Measurement and Phased Array Ultrason

Advanced non-destructive testing (NDT) techniques like alternating current field measurement (ACFM) and phased array ultrasonic testing...

Wire Rope Testing – An Introduction to Magnetic Flux Leakage Testing

Thomas R. Hay, Ph.D., P.E

Jun 18, 20204 min read

Wire Rope Testing – An Introduction to Magnetic Flux Leakage Testing

Introduction Wire rope testing with magnetic flux leakage (MFL) is a well-developed non-destructive testing (NDT) technique for wire rope...

Phased Array Testing to Bridge Welding Code

Thomas R. Hay, Ph.D., P.E

Jun 4, 20204 min read

Phased Array Testing to Bridge Welding Code

Introduction Phased array ultrasonic testing (PAUT) is presented in detail in the American Welding Society (AWS) D1.5 Bridge Welding Code...

Phased Array Ultrasonic Testing (PAUT) Weld Flaw Sizing

Thomas R. Hay, Ph.D., P.E

May 21, 20204 min read

Phased Array Ultrasonic Testing (PAUT) Weld Flaw Sizing

Ultrasonic weld inspection using phased array ultrasonic testing (PAUT) is used to detect and size weld defects across many different...

Wire Rope Testing – A Review of Different Non-destructive Testing Methods

Thomas R. Hay, Ph.D., P.E

May 8, 20204 min read

Wire Rope Testing – A Review of Different Non-destructive Testing Methods

Introduction Wire rope testing, or bridge cable inspection, is an essential process in fitness-for-serv ice evaluation of amusement park...

Phased Array Ultrasonic Testing (PAUT) Weld Inspection – Pattern Recognition

Thomas R. Hay, Ph.D., P.E

Apr 24, 20205 min read

Phased Array Ultrasonic Testing (PAUT) Weld Inspection – Pattern Recognition

Introduction Machines are trained by humans to seek patterns in large volumes of data in order to discriminate between different data...

Thomas R. Hay, Ph.D., P.E

Mar 20, 20202 min read

On-line NDT Training

Date: 03/20/2020 Announcement: Remote Learning - NDT Training Ultrasonic Testing Level 1 Course Cost: $1250 On-line NDT Training Course...

Iron Tracking Database - Flow Iron Analytics

Thomas R. Hay, Ph.D., P.E

Mar 9, 20202 min read

Iron Tracking Database - Flow Iron Analytics

TKS’s total flow iron asset management database includes Flow Iron AnalyticsTM (FIA) which currently monitors over 30,000 flowback, frac,...

Recertification of Tube Trailers using Acoustic Emission Testing

Thomas R. Hay, Ph.D., P.E

Sep 19, 20194 min read

Recertification of Tube Trailers using Acoustic Emission Testing

There are many classes of DOT steel cylinders used for medical, industrial, power generation, and gas storage, such as nitrogen, oxygen,...

Thomas R. Hay, Ph.D., P.E

Aug 19, 20198 min read

Ultrasonic Testing of Welds

Introduction It is not uncommon for a nondestructive testing ultrasonic technician to inspect structural welds according to the American...

Acoustic Emission Testing of Fiberglass Reinforced Plastic FRP Tanks

Thomas R. Hay, Ph.D., P.E

Jul 19, 20195 min read

Acoustic Emission Testing of Fiberglass Reinforced Plastic FRP Tanks

TECHKNOWSERV CORP. (TKS) is a leading supplier of fiberglass tank acoustic emission testing on new and in-service fiberglass reinforced...

Thomas R. Hay, Ph.D., P.E

Jul 19, 20194 min read

Fiberglass Tank Inspection

Introduction Fiberglass tanks are complex structures made from multiple layers of different materials to achieve a balance between...

Thomas R. Hay, Ph.D., P.E

May 19, 20195 min read

Pipeline Inspection with Guided Waves

TECHKNOWSERV specializes in the nondestructive testing of pipelines with long-range ultrasound (LRUT). Under ideal conditions, guided...

Acoustic Emission Testing of Aboveground Storage Tanks

Elizabeth Hay

Apr 19, 20194 min read

Acoustic Emission Testing of Aboveground Storage Tanks

TANKSERV: Acoustic Emission Testing of Aboveground Storage Tanks The floor of an Aboveground Storage Tank (AST) remains the most...

Thomas R. Hay, Ph.D., P.E

Mar 19, 20195 min read

Bridge Pin Non-destructive Testing

TECHKNOWSERV CORP. (TKS) provides bridge pin non-destructive testing services to quantitatively assess cross-sectional area loss at...

Non-destructive Testing (NDT) of Amusement Park Rides

Thomas R. Hay, Ph.D., P.E

Jan 19, 20195 min read

Non-destructive Testing (NDT) of Amusement Park Rides

Conventional Nondestructive Testing (NDT) Methods TECHKNOWSERV CORP. (TKS) provides conventional non-destructive (NDT) and advanced...

Non-destructive Testing of Hydraulic Fracturing Components

Thomas R. Hay, Ph.D., P.E

Sep 19, 20184 min read

Non-destructive Testing of Hydraulic Fracturing Components

Flow iron is used in hydraulic fracturing and flowback operations. This process is also referred to fracking. Flow iron requires periodic...

Thomas R. Hay, Ph.D., P.E

Aug 19, 20184 min read

Acoustic Emission Testing of Spheres

Spherical pressure vessels are manufactured in accordance with the American Society for Mechanical Engineering Boiler and Pressure Vessel...

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