Ultrasonic testing thickness measurement procedure. Thickness measurements were taken at multiple reference points on the head and nozzles of the component, and compared to Jul 7, 2022 · Ultrasonic testing is commonly used in industries to detect flaws or measure material thickness. Personnel must be certified in ultrasonic testing. The procedure is to Ultrasonic Thickness Measurement (UTM) is one of the techniques used to determine the condition and wall thickness of tanks, vessels, boilers, pipelines etc. The part requires little or no Oct 22, 2025 · The UTG‐1500 is an advanced lightweight ultrasonic thickness gauge that is designed to be convenient to use and rugged enough to operate in harsh environments. Dec 1, 2007 · Using a UTG for accurate thickness-strain measurements requires a higher-level of detail during the measurement procedures. The procedure is intended to ensure accurate ultrasonic thickness measurements in accordance with applicable codes and standards for Oct 15, 2024 · How can precision be ensured in measurements? What is the significance of the interface between coating and substrate? Using ultrasonic thickness gauges for non-destructive testing is a game changer. Capable of measuring any material that sounds Feb 18, 2025 · How ultrasonic testing works to detect flaws in materials, ultrasonic testing process, key advantages, and industrial applications. Besides its wide use in engineering applications (such as flaw detection/evaluation, dimensional measurements, material characterization, etc. 9 cm or less wavelength at atmospheric Mar 4, 2019 · 1. Principle of ultrasonic thickness testing by Phase II+ The use of Ultrasonic non-destructive testing (NDT) to check material properties such as thickness measurement, is now extensively used in all facets of industry. Three (3) circumferential bands of measurements are to be located on the long radius elbow near Connector F, spaced approximately at a 30, 45, and Abstract ISO 16809:2017 specifies the principles for ultrasonic thickness measurement of metallic and non-metallic materials by direct contact, based on measurement of time of flight of ultrasonic pulses only. Jan 1, 2011 · Other researcher used ultrasonic sensor for inspecting wall thickness measurement [9] and pipe wall [10]. Ultrasonic thickness gauging is a widely used nondestructive technique for measuring the thickness of a material from one side. Offers a wide measuring range coupled with high resolution. Learn more in this blog post. 5 and 15 MHz) to conduct examinations and make measurements. Oct 9, 2025 · MatestLab provides ASTM E213 Standard Practice for Ultrasonic Testing of Metal Pipe and Tubing services in USA, Canada, UK, Mexico, Colombia, Peru, Brazil, New Zealand, and Australia. It provides criteria for acceptance and rejection of statically and cyclically loaded components, emphasizes personnel qualifications, and details the testing angles and methods to assess the integrity of steel plates and This paper shall focus on accomplishing ultrasonic thickness (UT) testing for API 653 and STI SP-001 AST inspections. Metals, plastics, ceramics This article provides you with a sample ultrasonic testing procedure. 5. Mar 4, 2019 · Defined Ultrasonic Thickness Measurement Procedure (API-UT-30) Ultrasonic procedure API-UT-30 was developed during test specimen and test set validation (fingerprinting). A common example is ultrasonic thickness measurement, which tests the thickness of the test object, for example, to monitor pipework corrosion and erosion. By utilizing high-frequency sound waves, UT provides precise and real-time inspection results for industries such as oil & gas, aerospace, power generation, and Ultrasonic Thickness Testing (UTT) is a Non-Destructive Testing (NDT) method specified by the American Society of Mechanical Engineers (ASME), Section V, Article 5 of the Boiler & Pressure Vessel Code, as well as a number of ASTM standards. 16 and 2 inches thick using manual ultrasonic techniques. It is fast, reliable, and versatile, and unlike a micrometer or caliper it requires access to only one side of the test piece. For more information, please visit This document provides an inspection procedure for performing ultrasonic thickness measurements. Key steps include calibrating the instrument using reference blocks, applying a couplant, and taking direct readout measurements between 1. Just about anything made out of metal, plastic, composite, ceramic, glass, fiberglass, or rubber can be measured. This document outlines the procedure for performing ultrasonic thickness measurements using pulse-echo digital readout equipment. It outlines requirements for personnel qualifications, equipment calibration, surface conditions, couplants, probes, and examination techniques. com 1. Key steps include transducer zero compensation, velocity and zero calibration, temperature compensation if needed ULTRASONIC WALL THICKNESS GAUGE MEASUREMENT The use of Ultrasonic non-destructive testing (NDT) to check material properties such as thickness measurement, is now extensively used in all facets of industry. The procedure is applied for the detection of The non-destructive testing market is hugely valuable, with estimates of it being valued at USD 14. PREFACE This standard was prepared by the Association’s Committee on Non-destructive Testing of Metals and Materials, at the request of industry. 500 inches. Utilizing the latest in micro computer circuitry, this unit offers a combination of high accuracy and quick measurement time. It outlines equipment requirements including ultrasonic instruments, search units, cabling, and couplants. Discover its procedure, applications, advantages, limitations, and common inspection methods. (1. 3 Ultrasonic Testing. Oct 13, 2025 · What is ultrasonic thickness measurement? Ultrasonic thickness measurement is a widely used non-destructive testing (NDT) technique, especially for determining the actual thickness of a component. Ultrasonic thickness gauges measure the thickness of materials by employing ultrasonic waves. Mar 4, 2019 · This document defines the procedure for ultrasonic thickness measurements of materials between 0. 050 in. It provides a method for the measurement of thickness by non-destructive testing, and is one of a series of standards on thickness measurements; others in the series are as follows: Part 1 Determination of the Wall Thickness of Pipe by the Use of . 1. It can also This ultrasonic testing thickness measurement report details inspections of a condensate cooler at a cogeneration plant. A non-destructive testing method used to inspect the thickness of a material of component. It is usually assumed to be a constant for a given class of materials. Similar to naval sonar and medical ultrasound, industrial UT operates on the principle of sending sound waves into a material and analyzing the returned echoes to gather information about the internal Jul 8, 2020 · This document provides a procedure for measuring material thickness using an ultrasonic thickness gauge. The technology is applied extensively in the manufacturing, construction, aerospace, and shipping industries for measuring metal, plastic, and composite material structural capacity. 7 Performance requirements for ultrasonic thickness measuring equipment To comply with this standard, ultrasonic thickness measuring equipment shall be verified using the tests described below and shown in Table 2. 0 in (150 mm) for most geometric configurations encountered in fabrication under normal conditions. Sound waves with a frequency greater than 20 kHz and a 1. 1). The two way duration of travel, divided by the known sound velocity through that particular metal, provides The methods of making ultrasonic measurements of thickness may be classified according to the type of transducer used to make the measurement, or they may be classified by the choice of echoes used to determine the ultrasonic pulse transit time through the test piece. Quantifiable information can be gathered for detection of localised or general This document provides a procedure for ultrasonic thickness gauging using digital ultrasonic thickness meters. Jul 29, 2025 · A well-defined procedure ensures consistency, safety, standardisation, and quality assurance in ultrasonic testing, ultrasonic examination, and ultrasonic NDT testing. This can be taken as a measure of the combined precision and accuracy of individual measurements of tank wall measurements if the measurement of the test plates sufficiently resembles the measurement of tank wall thickness. Metals, plastics Calibration Procedure Phase II, Inc. Have you ever wondered why calibrating an ultrasonic thickness gauge is essential?To get a precise reading from an ultrasonic gauge and for appropriate analysis of the flaws detected, knowing how to calibrate the ut thickness gage is necessary for you. This includes inspectors testing critical parts like aircraft turbine blades for wear and maintenance crews checking pipes and tanks for in-service corrosion This document provides a quality control procedure for using ultrasonic thickness measurement to inspect materials. 2 mm) to 6. The term “non-destructive” means that the integrity of the piece remains completely unaffected during the process. Its main field of application is to check the remaining wall thickness of objects which are subject to corrosion or erosion, like piping or vessels. This is a sample UT procedure and may be required to be modified as per specific requirements. Using an ultrasonic thickness gauge on ships and offshore has made working with hazardous materials safer and reliable. Ultrasound can be used on almost any material to locate discontinuities from large disbonds, down to the smallest defects. Feb 27, 2024 · Ultrasonic Testing: Complete Guide Table of Content Introduction Did you know that the ultrasonic testing principle has applications beyond the medical field? Indeed, its significance extends to various industries. It describes calibration of the equipment using reference blocks, performing measurements on test materials, and documentation and reporting of results. Feb 5, 2020 · AW-02A Jumper F-Z As-Built Wall Thickness Testing: Locations of the measurements are specified in the attached datasheet. 1. Dec 15, 2021 · Introduction Basic Principles of Ultrasonic Testing Ultrasonic Testing (UT) uses high frequency sound energy to conduct examinations and make measurements. A total of five (5) measurement bands (measurements designated along the pipe circumferential perimeter) are to be established. Learn more in these application notes: Thickness of Small-Diameter Tubing High-Temperature Ultrasonic Testing Ultrasonic Gauging Procedure for Plastic Pipe Thickness Measurement Plastic pipe thickness measurement is a common application for ultrasonic gauges. Ultrasonic Testing: thickness measurement Related Term: wall thickness measurement, Description: The method of measuring the thickness of a sample of known velocity, using the pulse echo method, measuring the displacement of the first back-wall echo from the start of the transmission peak (direct contact). Includes equipment, calibration, and examination guidelines. Ultrasonic testing was conducted on May 3, 2019 using an Olympus 38DL Plus instrument with a 5MHz twin crystal search unit and wallpaper paste couplant. Unlike traditional methods that can damage materials, these gauges provide accurate measurements without compromising integrity. It can also be used to measure the overall thickness of a material, and the specific depth of a defect. Ultrasonic inspection can be used for flaw detection/evaluation, dimensional measurements, material characterization, and more. Most measurements are made at Jan 18, 2022 · What is UT Gauging? UT (Ultrasonic Testing) gauging is an NDT Technique used for measuring the thickness of material (plate, pipe, forging or casting or any other material shape) using the contact pulse-echo technique at temperatures not to exceed 93 C [200 F] where only one-sided access is available for the inspector. Ultrasonic thickness gauging is a widely used nondestructive test technique for measuring the thickness of a material from one side. See full list on paktechpoint. Scope This is a general procedure that describes the methods and principles for manual ultrasonic thickness measurements and corrosion monitoring of metallic materials. 28 billion in 2022. What Is Ultrasonic Testing and How is it Used in NDT? Ultrasonic testing is an NDT method that uses high-frequency sound waves to detect and measure discontinuities in industrial components. Jun 15, 2023 · One of such devices is the ultrasonic system for continuous belt thickness measurement, which is being built under the LIDER X project, called BeltSonic. to . If measurement uses delay line or immersion transducers the time of flight measurement Discover the ultrasonic testing procedure with this detailed, step-by-step guide. WALL THICKNESS MEASUREMENT BY ULTRASONIC EXAMINATION METRIC CONVERSIONS The conversion of quantities between systems of units involves a determination of the number of significant digits to be retained. Measurements are to be made using pulsed echo techniques with appropriate probes and couplant on cleaned surfaces ATS NDT performs ultrasonic thickness testing (UTT) to determine material thickness and to measure the thickness of coatings and/or linings. The procedure involves identifying the pipe, preparing a risk assessment, cleaning the inspection Nov 30, 2018 · Ultrasonic Testing In most common UT applications, very short ultrasonic pulse-waves with center frequencies ranging from 0. The document outlines the Ultrasonic Thickness Measurement Procedure (QA-045-21) for non-destructive testing of welds in steel materials, detailing the purpose, scope, equipment, calibration, safety, and acceptance criteria. It outlines requirements for personnel qualifications, ultrasonic equipment and materials, examination surfaces, calibration procedures, examination methods, acceptance criteria, and reporting. In an ultrasonic thickness measurements (UTM) inspection, a straight beam is introduced into the test object perpendicular to the surface and round-trip time is measured. The ability to gauge thickness measurement without requiring access to both sides of the test piece, offers this technology a multitude of possible applications. Mar 28, 2025 · Discover how ultrasonic testing works through coatings, its challenges, and innovations for accurate thickness measurement in industrial applications. 2 The following procedure addresses equipment and evaluation techniques for ultrasonic examination of ferrous and non-ferrous metal plating using manual ultrasonic techniques only. It specifies that personnel must be qualified to ASNT Level II or equivalent and describes the necessary equipment and techniques for conducting ultrasonic inspections The document provides standard operating procedures for ultrasonic thickness inspections of ferrous pipe welds and walls. minimum thickness. Use of this procedure is not mandatory; however, it is strongly recommended. Ultrasonic testing is a form of non-destructive testing that utilizes high-frequency sound waves to measure the thickness and condition of materials. 4. 00 inches. Thickness measuring is essential across many industries to monitor corrosion, erosion and damage. The procedure commences when a transducer emits ultrasonic sound waves into the test material. NDT Procedure for Ultrasonic Inspection A Nondestructive testing (NDT) Procedure suitable for General Ultrasonic Inspections. ATS provides ultrasonic pipe thickness testing services to help clients evaluate the condition of their piping systems. 3 This procedure provides guidelines and techniques for ultrasonic thickness measurements of corroded areas on Tank Bottoms. It describes instrument calibration using standard blocks, coupling agent selection, and testing methods. 1 Scope This document specifies the principles for ultrasonic thickness measurement of metallic and non-metallic materials by direct contact, based on measurement of time of flight of ultrasonic pulses only. The UTG measures total travel time between the transducer sending the ultrasonic wave through the sheet and the transducer receiving the return wave bounced back from the back edge of the sheet (Fig. The usage of an ultrasonic thickness gauge for non-destructive testing to check material properties such as thickness measurement, is regular in all areas of industrial measurements. This includes inspectors testing critical parts like aircraft turbine blades for wear and maintenance crews checking Does the thought of using an ultrasonic thickness gauge ever get you frustrated? This feeling can arise when you miss a step in the operating procedures of the ultrasonic thickness gauge. 250 inches and less. An ultrasonic thickness gauge works by measuring how long it takes for a sound pulse to travel through a material and reflect from in internal surface, this is then displayed on a digital screen. 6. T 5 Vt 2 where: T 5 thickness, V 5 velocity, and t 5 transit time. It used contact method (contact between sample with sensor) for thickness detection. An ultrasonic thickness gauge’s working principle is that the ultrasonic waves are used in measuring the thickness without damaging the material. ), ultrasonics are also used in the medical field (such as sonography, therapeutic ultrasound, etc Apr 30, 2025 · Ultrasonic testing uses high-frequency sound waves to detect internal flaws in materials for quality and safety assurance. 1 Introduction to Ultrasonic Thickness Gauges For more than fifty years, ultrasonic thickness gauges have been used by quality control professionals to measure the thickness of a wide variety of products across a range of industries. A common example is ultrasonic thickness measurement, which tests the thickness of the test object, for example, to monitor pipework corrosion Ultrasonic Testing (UT) is a highly effective non-destructive testing (NDT) method like Visual Testing (VT) or Radiographic Testing (RT). Learn the ultrasonic testing process with this step-by-step guide. Sometimes, moving from using another thickness measurement method to the ultrasonic gauge method can also be the reason for this frustration. Manual UT wall thickness measurements is a technique using high-frequency sound energy to conduct examinations and obtain thickness measurements. To describe the process for performing ultrasonic (UT) thickness measurements and inspections for interfering conditions using manual, contact, and longitudinal wave techniques. Ultrasonic thickness testing (UTT) is a valuable non-destructive test (NDI) method used to measure the thickness of a material by employing high-frequency sound waves. 2 Place the transducer on the test material in an area with a uniform back-wall reflection free from any indications and representative of sound material. Ultrasonic testing, or UT as it is commonly called, is the procedure of introducing an ultra high-frequency sound wave into the exterior side of a pipe or some other type of material, and reflecting the sound wave echo from its interior surface to produce a measurement of wall thickness. Ultrasonic thickness measurement (UTM) Ultrasonic thickness measurement (UTM) is a non-destructive testing method used to inspect the metal thickness of ship hulls, piping and structural steel. The ability to gauge thickness measurement without requiring access Sep 2, 2021 · Measurements are made from one side of the object, without requiring access to the rear surface. Ultrasonic Testing inspection is a widely used NDT method that plays a crucial role in various industries, such as manufacturing, construction, aerospace, and oil and gas, focusing Jul 26, 2024 · Ultrasonic thickness measurement (UTM) is a non-destructive testing method used to detect and assess hull corrosion on ships. 2. This a sample UT procedure and you need to modify it to meet your project specification. 160 inches and less than 2. Alternate phrases for UT include: Ultrasonic inspection (UI) Ultrasonic thickness measurement (UTM) Ultrasonic flaw detection (UFD) Ultrasonic examination (UE) Ultrasound testing (UT) Ultrasonic non-destructive testing (UNDT) Ultrasonic testing Non-destructive testing — Ultrasonic thickness measurement Scope document materials specifies by direct principles on ultrasonic me thickness measurement of flight of ultrasonic of metallic Normative references constitutes following references, requirements of document. Ultrasonic Testing or Ultrasonic Flaw Detection is a type of non-destructive Testing that employs high-frequency ultrasound waves to perform inspections and measurements. ASME Ultrasonic Thickness Measurement Procedure 6. Nov 9, 2023 · Ultrasonic Testing Terminologies, the Standards and Codes of Ultrasonic Testing act as a common language, ensuring that whether you're testing a bridge in New York or a pipeline in Tokyo, the procedures and measurements remain consistent. All conversions depend upon the intended precision of the original quantity and are rounded to the appropriate accuracy. It specifies qualifications for personnel, calibration of equipment, surface preparation, marking of test locations, examination process, and reporting requirements. UTG-2000/2020 Ultrasonic Thickness Gauge Ultrasonic Gauging Procedure to Measure Conveyor Belt Thickness In the most common situation using the M1036 transducer to measure the outer rubber layers on belts with textile or fabric reinforcement, start with the gauge's M1036 default setup and increase maximum gain as necessary to measure the thickness range of interest. It Ultrasonic Testing – UT Ultrasonic Testing Utilises Sound waves with frequencies more than 20,000Hz to travel into the material to be inspected and finds out Defects or makes measurements, This document outlines procedures for performing ultrasonic thickness measurements on metal pipes and vessels. However, the ultrasonic thickness gauge offers so many benefits An ultrasonic thickness gauge is a measuring instrument for the non-destructive investigation of a material's thickness using ultrasonic waves. Ultrasonic inspection is often used to discover and evaluate flaws, measure dimensions, characterize materials, and more. Nearly all materials can be tested using ultrasonic sound. 0. Jul 1, 2022 · Its complex inner structures cannot be detected accurately by traditional testing methods. 5 This procedure outlines the requirements for contact methods, using longitudinal wave 0 degree straight beam techniques. Jul 29, 2016 · This document provides procedures for ultrasonic thickness testing using digital thickness gauges or ultrasonic flaw detectors. Ultrasonic inspection procedure for thickness measurements of metallic materials according to BS EN ISO 16809:2019. Ultrasonic Thickness Testing up to 550 °C Ultrasonic thickness measurement is a common industrial method used to measure the thickness of solid materials, with access only from one side of the test object. Aug 26, 2021 · Ultrasonic testing equipment, such as flaw detectors, thickness gauges, and phased array scanners, are used on many materials for various applications across the aerospace, automotive, railway, mining, and oil and gas industries. Ultrasonic testing (UT) is an NDT method that uses high-frequency sound waves to detect flaws, measure material thickness, and characterize materials. Ultrasonics uses (ultra) sound to detect internal and external discontinuities ranging from cracks to disbonds. Examples of state-of-the-art UT testing protocols shall be explained along with the advantages and weaknesses of each. Ultrasonic thickness measurement (UTM) can determine the thickness of a solid material. Ultrasonic testing is extensively used to detect flaws in welds. 3 The velocity in the material under test is a function of the physical properties of the material. 5mm and 200mm thick. This procedure defines the equipment and techniques that have been proven successful and efficient for UT Thickness Measurement of Plating. It is also referred to as ultrasonic thickness measurement (UTM) and is usually utilised on metal parts or structures. Personnel must be qualified to level II and follow calibration, operation, and reporting requirements outlined. Includes methods and equipment. Perfect for anyone interested in learning more . Ultrasonic testing (UT) comprises a range of non-destructive testing (NDT) techniques that send ultrasonic waves through an object or material to characterise the material or for flaw detecting. used to detect internal defects in materials, measure thickness, and evaluate weld integrity. Dec 13, 2024 · Ultrasonic testing (UT) is an NDT method that uses high-frequency sound waves to detect flaws, measure material thickness, and characterize materials. It can also be utilised for weld inspection, corrosion detection, and quality control in manufacturing processes. UTM utilizes high-frequency sound waves to measure the thickness of materials without causing damage or requiring the removal of protective coatings. Ultrasonic Testing (UT) uses high frequency sound waves (typically in the range between 0. A steel thickness gauge measures parts 5. 5. Basic Principles of Ultrasonic Testing Ultrasonic Testing (UT) uses high frequency sound energy to conduct examinations and make measurements. What are the ultrasonic testing methods for NDT? In this article: Ultrasonic Testing (UT) Is a Key Non-Destructive Evaluation Technique: UT uses high-frequency sound waves to inspect internal structures, detect flaws, and measure material thickness without damaging the test object. The reason for this is that metal and solid materials carry sound waves in a way that makes this kind of measurement possible. The examinations are to be carried out by direct contact, based on measurement of the time of flight of ultrasonic pulses. A detailed procedure for ultrasonic thickness measurement (UT-TM) according to API standards. This procedure specifies the techniques for manual ultrasonic thickness measurements within the thickness range of 0. 4 This procedure is applicable to material thicknesses from 0. 2 The pulse-echo ultrasonic instrument measures the tran- sit time of the ultrasonic pulse through the part. 2 Ultrasonic thickness measurements are used extensively on basic shapes and products of many materials, on precision machined parts, and to determine wall thinning in process equipment caused by corrosion and erosion. It outlines the purpose, scope, personnel qualifications, equipment, calibration process, surface preparation, probe selection, measurement procedure, acceptance criteria, reporting requirements, and safety considerations for ultrasonic thickness gauging. 3 Observe the signal level and adjust the gain control to produce the same signal height or response as noted from the calibration block. 3 This procedure provides guidelines and techniques for ultrasonic thickness measurements of corroded areas. Equipment must be periodically verified and calibrated Very small tubing and hot pipes are special cases. As most non-destructive testing includes visual inspections and ultrasonic testing or ultrasonic thickness measurements, this technology isn’t going anywhere. Ultrasonic Thickness Testing involves the use of high-frequency sound waves to measure the thickness of materials like metal, plastics, and composites, which are commonly used in tanks and pipelines. The procedure specifies calibration of the ultrasonic system using reference blocks of similar material to the test specimen. A staple of non-destructive testing (NDT), MISTRAS provides traditional ultrasonic testing (UT) inspection services for the detection and location of discontinuities, material composition analysis, and wall thickness measurements. Measurement locations should be tested three times each and abnormal readings addressed by changing probes or using ultrasonic flaw detection instead of thickness Dec 10, 2018 · Procedure qualification test shall be performed to the satisfaction of the company before starting of the work using multi step thickness standardization block that yields the 1. Feb 14, 2022 · Ultrasonic testing (UT) makes use of sound waves during the inspection of various types of materials. This article presents the method of calibrating this device and the obtained measurement accuracy. Read More… In the marine industry, the most common application of ultrasound is the identification & quantification of corrosion on vessels constructed of steel & aluminum. It describes the qualifications needed for personnel, references appropriate industry standards, lists the required equipment, and outlines the UT examination procedure. Among all non-destructive testing (NDT) methods, ultrasonic testing method has certain advantages in measurement accuracy and efficiency for measuring wall thickness values. 1-15 MHz, and occasionally up to 50 MHz, are transmitted into materials to detect internal flaws or to characterize materials. To illustrate the general inspection principle, a typical pulse/echo inspection configuration as illustrated Abstract Introduction of Ultrasonic Thickness Measurements Ultrasonic thickness measurement is a non-destructive testing technique used to determine the thickness of a solid material by utilizing high-frequency sound waves. Introduction to Ultrasonic Thickness GaugesIntroduction to Ultrasonic Thickness Gauges For more than fifty years, ultrasonic thickness gauges have been used by quality control professionals to measure the thickness of a wide variety of products across a range of industries. This document outlines the ultrasonic testing procedure specifically designed for inspecting groove welds on steel fabrication with a parent metal thickness of 8mm and above. Oct 13, 2023 · Conclusion Ultrasonic Thickness Gauges, known by various names such as ultrasonic thickness measurement devices, meters, and testing equipment, stand as indispensable tools across a wide spectrum of industries. wy jms ftsh lgi0lfe7 fxa ivf7t jg ptiez s83ot ioae5zr