ultrasonic testing

The Ultrasonic Testing UT Level I course includes a basic introduction to the theory and principles of ultrasound including frequency, velocity, and wavelength.

It addresses the variables related to the propagation, reflection, and attenuation of sound as well as the responses from discontinuities. The various wave modes are presented in a comprehensive way so that the major wave modes are fully understood.

These wave modes include compressional longitudinal or straight beamshear transversesurface Rayleighand thin sheet Lamb. The student will be able to understand the display and to calibrate the UT instrument and identify the location of reflectors and discontinuities in various test specimens.

UT equipment and transducers are demonstrated. UT is also used for precise thickness measurements and the basic procedure for this is also covered. A number of techniques and applications will also be presented including discussions on the data required for precise reporting. This course is essential for those desiring to enter and specialize in UT. It is also beneficial for those who will not be practitioners but who want to understand the basic principles and applications of Ultrasonic Testing.

The completion of these assignments in addition to self-study is strongly encouraged and will add to the overall training benefit and time to be credited. It is recommended that the student a log of the self-study time.

It is also recommended that the applicable Level III be involved and confirm that the reading and self-study assignments have been completed. Online learning gives the student complete control over their learning experience. FAQs How much do I need to know before taking this course? It will prepare you to take the practical training needed to become certified by your employer. Who should take this course? Anyone interested in expanding their welding career to examine welds and other types of materials and products.

How long do I have to complete this course? You have 30 days to take the course and 10 days to complete the exam. Does this course include a completion exam? Yes, you will not only take quizzes after many of the chapters, there is a final exam after the successfully complete the course.Our services include manual and automated mapping, and weld examinations for numerous applications including piping, tanks, vessels and processing plants.

Ultrasonic testing services range from manual thickness readings to large scale automated corrosion mapping to phased array flaw detection.

In the absence of timely manufacturer support for a critical equipment issue, the full time onsite Acuren Condition Monitoring Specialist was able to diagnose and provide a detailed correction path on a defective trunion bearing.

During a planned outage ultrasonic testing and visual inspection revealed that a significant portion of the pump box floor either needed to be repaired, or cut out and replaced.

As the transmission of the COVID virus increases around the world and within our own communities, we want to make our customers aware that, in most jurisdictions, we fall within the essential services exception and we are able to perform the services customers require on their sites. As well we want to take a moment to update you on the measures we continue to implement to ensure business continuity and transmission reduction:. Our primary concern is always employee and client safety.

To this end, we will continue to add to, or modify, our preparedness program in reaction to this evolving situation. We thank you in advance for all of your efforts in doing the same, and, as always we commit to working with you to ensure a safe worksite for all employees.

Should you have any questions regarding the foregoing, please contact me at or kevin. Acuren provides integrated services including inspection, repair and maintenance via rope acess using composite crews with multi-disciplined trades, experienced personnel, IRATA certified technicians, and customized access optimization programs.

Acuren has a specialized team with aerospace industry experience that use both traditional and advanced nondestructive testing methods to identify defects in critical structural, airframe, and engine and accessory components. Structural design engineers, inspectors, nondestructive testing technicians, laboratory technologists and rope access technicians deliver solutions to help you design, construct and maintain your buildings and valuable infrastructure. Our certified and experienced technicians evaluate fabricated components for cracking, porosity, incomplete penetration, inclusions, lack of sidewall fusions and similar defects.At this time, LTI is open for normal business operations.

Read our statement from president, Brandon McVaugh. In addition, ultrasonic testing services can measure the wall thickness of tubing and pipe. Laboratory Testing Inc. Ultrasonic Testing at LTI is set up for fast test results, convenient service and easy order completion.

UT testing services are completed in a large shop area with high-capacity cranes and forklifts to easily move large crates and oversize samples. We are also equipped and experienced at providing added in-house services, such as receipt and final inspection, cutting, trimming and deburring, material identification, and special packaging and shipping. Any standards not in stock can be quickly manufactured in our own Machine Shop or by our qualified local vendor.

Our immersion UT systems are set up for high-speed inspection of tubing, pipe and round bar stock. Material diameters from 0. Contact UT is also performed on other materials, including plate, forgings, flat welds and weld plates to provide information about flaws and inconsistencies.

In addition, has other qualified inspectors on staff for fast, convenient service, including:. The immersion ultrasonic testing equipment is computerized for paperless chart recording and file retention.

LTI performs ultrasonic testing to a wide variety of military, commercial, and customer specifications, including:. LTI is your answer for fast, one-stop inspection. Ask us to provide pricing and turnaround information for your next ultrasonic testing order.

During UT testing, an ultrasound probe connected to the test equipment transmits short pulses of high-frequency sound waves into the item being inspected while passing over its surface. A defect or inconsistency will cause some of the energy to be reflected. Sound pulses are displayed on a screen when reflected from features within the test material.

The technician interprets these reflected signals to determine if the product or material is defective or acceptable according to the test specification or requirements. Immersion ultrasonic testing takes place in water which conducts the sound waves between the probe and test material.

The process is partially automated and eliminates the need for direct contact with the test material during inspection.

ultrasonic testing

During contact ultrasonic testing, an ultrasonic probe emitting sound waves is manually run over the surface of the test piece. The immersion technique is preferred because it can be faster and more accurate. Ultrasonic Testing is Reliable for Defects and Measurement. Request a Quote Contact Us.

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Nice people, clean environment, and professional staff members…what more can I say? I am very happy I found your firm. Copyright Laboratory Testing Inc. All rights reserved. Metals and Alloys Composites Other Materials.A staple of non-destructive testing NDTMISTRAS provides traditional ultrasonic testing UT inspection services for the detection and location of discontinuities, material composition analysis, and wall thickness measurements. In ultrasonic testing UTa transducer introduces ultrasonic waves into a material, which travel in a straight line and at a constant speed until they encounter a surface.

This causes some of the wave energy to be reflected, while the rest is transmitted. Analyzing the amount of reflected energy vs. MISTRAS provides a wide range of UT inspection services to clients in multiple industries, including aerospacerefiningmanufacturinginfrastructureand power generation. Ultrasonic Thickness Testing UTT is a method for determining the extent of corrosion and erosion on the walls of piping, vessel, storage tank, and other assets.

Ultrasonic Thickness Testing UTT is one of the most common applications of the ultrasonic inspection technique. These evaluations are critical for plant equipment maintenance management personnel to make informed run-repair-replace decisions. As corrosion and erosion often occur on the inside of pipe and vessel walls, degradation can potentially lead to more damaging effects if allowed to worsen.

Consulting Access Special Emphasis. Equipment Monitoring Data Management. Call Me. Select your Industry. Select a Specialty. Select a Method.Ultrasonic testing UT is a non-destructive testing techniques based on the propagation of ultrasonic waves in the object or material tested. In most common UT applications, very short ultrasonic pulse-waves with center frequencies ranging from 0.

A common example is ultrasonic thickness measurement, which tests the thickness of the test object, for example, to monitor pipework corrosion. Ultrasonic testing is often performed on steel and other metals and alloys, though it can also be used on concrete, wood and composites, albeit with less resolution.

It is used in many industries including steel and aluminium construction, metallurgy, manufacturing, aerospace, automotive and other transportation sectors. In ultrasonic testing, an ultrasound transducer connected to a diagnostic machine is passed over the object being inspected.

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The transducer is typically separated from the test object by a couplant such as oil or by water, as in immersion testing. As shown in below figure left : A probe sends a sound wave into a test material. There are two indications, one from the initial pulse of the probe, and the second due to the back wall echo.

As shown in below figure right : A defect creates a third indication and simultaneously reduces the amplitude of the back wall indication. There are two methods of receiving the ultrasound waveform.

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Reflected ultrasound comes from an interface, such as the back wall of the object or from an imperfection within the object. The diagnostic machine displays these results in the form of a signal with an amplitude representing the intensity of the reflection and the distance, representing the arrival time of the reflection.

In attenuation or through-transmission mode, a transmitter sends ultrasound through one surface, and a separate receiver detects the amount that has reached it on another surface after traveling through the medium. Imperfections or other conditions in the space between the transmitter and receiver reduce the amount of sound transmitted, thus revealing their presence.


Using the couplant increases the efficiency of the process by reducing the losses in the ultrasonic wave energy due to separation between the surfaces. Save my name, email, and website in this browser for the next time I comment.

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We'll assume you're ok with this, but you can opt-out if you wish. Accept Read More. Primary Menu Inst Tools. Search for: Search. Previous Article.Selected Applications Rail Inspection Weldments. History of Ultrasonics.

Ultrasonic Testing (UT) : Principle, Advantages, Disadvantages

Prior to World War II, sonar, the technique of sending sound waves through water and observing the returning echoes to characterize submerged objects, inspired early ultrasound investigators to explore ways to apply the concept to medical diagnosis. In andSokolov studied the use of ultrasonic waves in detecting metal objects. Mulhauser, inobtained a patent for using ultrasonic waves, using two transducers to detect flaws in solids.

Firestone and Simons developed pulsed ultrasonic testing using a pulse-echo technique. Shortly after the close of World War II, researchers in Japan began to explore the medical diagnostic capabilities of ultrasound.

The first ultrasonic instruments used an A-mode presentation with blips on an oscilloscope screen. That was followed by a B-mode presentation with a two dimensional, gray scale image. Japan's work in ultrasound was relatively unknown in the United States and Europe until the s.

Researchers then presented their findings on the use of ultrasound to detect gallstones, breast masses, and tumors to the international medical community. Japan was also the first country to apply Doppler ultrasound, an application of ultrasound that detects internal moving objects such as blood coursing through the heart for cardiovascular investigation.

Ultrasound pioneers working in the United States contributed many innovations and important discoveries to the field during the following decades. Researchers learned to use ultrasound to detect potential cancer and to visualize tumors in living subjects and in excised tissue. Real-time imaging, another significant diagnostic tool for physicians, presented ultrasound images directly on the system's CRT screen at the time of scanning.

Ultrasonic testing

The introduction of spectral Doppler and later color Doppler depicted blood flow in various colors to indicate the speed and direction of the flow. The United States also produced the earliest hand held "contact" scanner for clinical use, the second generation of B-mode equipment, and the prototype for the first articulated-arm hand held scanner, with 2-D images.

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Nondestructive testing has been practiced for many decades, with initial rapid developments in instrumentation spurred by the technological advances that occurred during World War II and the subsequent defense effort.

During the earlier days, the primary purpose was the detection of defects. As a part of "safe life" design, it was intended that a structure should not develop macroscopic defects during its life, with the detection of such defects being a cause for removal of the component from service.

In response to this need, increasingly sophisticated techniques using ultrasonics, eddy currents, x-rays, dye penetrants, magnetic particles, and other forms of interrogating energy emerged. In the early 's, two events occurred which caused a major change in the NDT field. First, improvements in the technology led to the ability to detect small flaws, which caused more parts to be rejected even though the probability of component failure had not changed.

However, the discipline of fracture mechanics emerged, which enabled one to predict whether a crack of a given size will fail under a particular load when a material's fracture toughness properties are known.Ultrasonic testing UT is a form of non-destructive testing NDT that uses high-frequency sound waves to measure the thickness or hardness of a material.

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Ultrasonic tests often are performed to assess corrosion on pipes, valves and steel or aluminum constructions. An ultrasonic tester also is used to detect flaws such as cracks and leaks. Thus, an ultrasonic tester is an integral tool used in material testing and engineering, manufacturing quality control, equipment condition monitoring, building and bridge inspection and more.

PCE Instruments offers accurate, affordable ultrasonic test equipment for the non-destructive evaluation NDE of ferrous and non-ferrous metals and alloys, plastics, composites and ceramics as well as for the non-destructive inspection NDI of industrial welds and building walls.

PCE-TG 50 is a compact ultrasonic thickness tester or gauge used to measure the thickness of metal, glass, plastic and other homogeneous materials. This portable handheld material thickness gauge operates with an external ultrasonic contact transducer sensor probe and requires the use of coupling gel or paste.

This ultrasonic thickness tester PCE-TG works with an external ultrasonic probe; this probe conducts ultrasonic waves into the material to be tested. Different materials conduct ultrasound at different speeds, so you can choose different ultrasonic speeds on the PCE-TG Ultrasonic Thickness Tester.

ultrasonic testing

The PCE-TG is an ideal ultrasonic thickness tester for water pipes, steam pipes and pipes for chemicals. This ultrasound-based Thickness Tester uses a contact transducer included to measure the thickness of coated and uncoated ferrous and non-ferrous metal, glass, plastic, and other homogeneous materials including aluminum, brass, copper, iron, lead, nickel, steel, gold, titanium, pyrex and quartz glass, nylon, polyethylene, and silicone rubber.

Software sold separately - see accessories for details. ISO Calibration Certificate.

ultrasonic testing

For example, the ultrasonic leak detector can help identify leaks in compressed air, gas, steam, vacuum and refrigeration systems as well as around door seals. The noise-cancelling headphones of the ultrasonic leak detector ensure that the device can be used successfully even in noisy environments. The tester comes with two probes, one UCI probe for non-destructive testing and one Leeb probe for rebound testing.

Small imprint after measuring for mirrored surfaces. Small imprint after measuring for mirrored surfaces and nitrided surfaces. PCE-FD 20 is a portable ultrasonic thickness tester or ultrasonic thickness gauge with a large LCD screen that displays A-scan maps of ultrasonic signals as well as B-scan cross sections.

PCE-USC 20 is a portable or benchtop ultrasonic thickness tester or ultrasonic thickness gauge with a 5. A portable ultrasonic tester or ultrasonic gauge is an incredibly versatile measuring device that comes in handy in myriad applications, especially when detecting leaks or measuring the effects of corrosion on tanks, pipes and structures with limited one-sided access.

In addition, an ultrasonic thickness gauge can be used to determine the thickness of coated or painted metals without the need for stripping.

Another kind of ultrasonic testing device is an ultrasonic contact impedance UCI durometer or hardness tester. A UCI hardness tester makes and then measures a diamond indent in the surface of material to determine the material hardness. Show Info Hide Info. Order no. The ultrasonic level indicator is the ideal measuring device to determine the fill level of a silo. The Ultrasonic Leak Detector is used to locate leaks on compressed air lines.

Furthermore, the Ultrasonic Leak Detector can also be used on coolant lines or gas lines for leak detection. In general, the wall thicknesses of all homogeneous materials can be measured with the ultrasonic tester. For damping or scattering materials such as plastic or cast a special sensor is available.

The ultrasonic thickness tester is a versatile measuring device. This is made possible by the various optional sensors on the ultrasonic thickness tester. Ultrasonic Tester PCE Choosing the Right Ultrasonic Test Equipment for Your Application A portable ultrasonic tester or ultrasonic gauge is an incredibly versatile measuring device that comes in handy in myriad applications, especially when detecting leaks or measuring the effects of corrosion on tanks, pipes and structures with limited one-sided access.