NDT News

Exposing 10 Common Misunderstandings about Penetrant Testing

We reveal common penetrant inspection misperceptions we’ve seen in the field in recent years

The liquid penetrant method of nondestructive testing has been used since the 1940’s. But even after being used by generations of NDT professionals, there are still some common areas of confusion or misunderstanding.

Here we set the record straight on 10 misperceptions we’ve seen in the field in recent years.

 

1. The highest sensitivity penetrant is the best penetrant for my application

The best penetrant for an application is the one that finds the right indications with the least amount of money and time. Sometimes this means not using the highest sensitivity penetrant.

While it is true that a higher sensitivity penetrant will produce indications for very small discontinuities, a higher sensitivity penetrant will probably not give you the best inspection results if you only need to find medium discontinuities since you will see far more indications than are relevant to the inspection.

To start selecting a penetrant, review any governing specifications and work procedures for required sensitivity levels.

Take into consideration the surface finish and configuration of the part.

A high sensitivity level fluorescent penetrant is appropriate for smooth, highly machined surfaces. However, a high sensitivity level fluorescent penetrant may leave excessive fluorescent background on a rough cast part, making inspection difficult. 

A lower sensitivity fluorescent penetrant is a better choice for rough surfaces.

 

2. A penetrant indication is a discontinuity

A penetrant indication is the visual results or response of the penetrant test which must be interpreted to determine its relevance.

Penetrant indications must be evaluated by a qualified inspector to determine if they are nonrelevant or relevant.

Nonrelevant indications may be present on parts because of inherent surface roughness or seams. Fingerprints or fibers may also cause nonrelevant indications.

Relevant indications are the result of a discontinuity, or interruption in the physical structure of an object, and are evaluated according to acceptance criteria. After evaluation, the part is accepted as is, reworked or discarded.

 

3. Water washable penetrants are water based

Some water washable penetrants are water based. However, this is not always the case. A penetrant can be water washable and not contain water.

Water-washable penetrants contain surfactants which allow the penetrant to be easily removed from the part surface with water rinsing, regardless of if they are water-based or oil-based.

 

4. Penetrants are only used on nonferrous metals

Penetrants can be used to inspect ferrous and nonferrous metals.

Penetrant inspection will find discontinuities open to the surface on ferrous and nonferrous metals.

Penetrant testing should not be done on porous surfaces, as the pores will act as discontinuities to trap penetrant and prevent accurate inspection.

 

5. Penetrant will be able to penetrate a discontinuity that contains water

Penetrant cannot seep into a discontinuity if it is already filled with water or other liquid.

Likewise, penetrant will not displace or penetrate through paint, particulate, oil or grease.

This is one of the reasons why an important prerequisite for a valid penetrant inspection is to start with properly cleaned and dried parts.

 

6. Tanks and an inspection booth are required for penetrant inspection

Penetrant inspection is easy to adapt to different environments and job sites.

Penetrant inspection systems with stationary tanks and booths are commonly seen in production environments. However, both fluorescent and visible dye penetrants are available in aerosol cans and kits for convenience and portability.

 

Check out our Penetrant Process Guide for a visual reference outlining each step in the various penetrant inspection methods and to learn 5 tips for penetrant testing

 

7. Penetrant is all that is needed to perform a penetrant inspection

At a minimum, penetrant and developer are required to perform a water washable penetrant inspection.

Additional products such as cleaner/removers and emulsifiers are required for solvent removable and post emulsifiable penetrant inspections.

 

8. Special lighting is required for penetrant inspection

Fluorescent penetrants do require inspection in a darkened area with specification compliant UV lighting. The UV lights may be mounted or hand-held for flexibility and portability.

Visible dye penetrants only require adequate white light, typically 100 foot candles minimum, for inspection.

 

9. Penetrant inspection should be the final check in a manufacturing process

Penetrant inspection is useful immediately after any manufacturing process which is known to cause discontinuities. This allows parts to be reworked or discarded earlier in the manufacturing process, which saves time and cost.

Penetrant inspection may sometimes be performed more than once during the manufacture of a part.

The placement of each penetrant inspection process should be optimized to locate manufacturing-induced discontinuities and reduce the amount of scrap or rework done later in the manufacturing process.

 

10. Penetrant inspection can take place at any point in the manufacturing process

As discussed, it is important to perform penetrant inspection after manufacturing operations likely to cause discontinuities open to the surface in parts.

However, care must be taken to perform penetrant inspection prior to mechanical operations that will smear the metal surface. Machining operations such as shot blasting, peening or grinding may close surface discontinuities, which can prevent subsequent penetrant inspections from finding these discontinuities.

Penetrant inspection should take place before machining operations like shot blasting, peening or grinding unless chemical etching can be used between these operations and the penetrant testing to reliably expose the discontinuities.

 

What other common misunderstandings or mistakes have you seen? 
Share your knowledge in the comments section below.

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5 Most Popular Inspection Techniques for the Oil and Gas Industry

By Lawrence Agbezuge
April 17, 2017

"The oil and gas industry operates according to stringent standards that primarily strive to keep equipment running efficiently while maintaining workplace safety. Conforming to such standards is challenging because oil and gas operations involve drilling (both on land and offshore), reservoir engineering, well servicing, production services, refining and transportation of petroleum products, and many other operations.
Not only is it challenging to conform to industry standards, but it is expensive to maintain a safe workplace and to protect workers from harm. It is necessary to equip workers with protective apparel; to continually train them on practicing safety procedures; and to keep them up to date on practicing improved equipment inspection techniques.

What is NDT?

Many NDT (Non Destructive Testing) methods are utilized in the oil and gas industry. The best NDT methods address issues regarding safety, equipment reliability, and environmental protection and government regulations."

Click Here to find out the greatest benefits of NDT

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Why AINDT?

American Institute of Nondestructive TestingThe American Institute of Nondestructive Testing not only offers training for exciting, high-demand careers with competitive salaries—we offer blended learning, which the U.S. Department of Education has found to be the most effective method of learning. AINDT's blended learning program combines flexible, affordable instruction as well as hands-on training to complete your course. Best of all, our online courses offer the ultimate flexibility. You can study, watch video lectures, and even complete quizzes on your iPad, iPhone, and Android devices! Instructors are able to teach active learning courses over the internet, and students can work at home on other assignments at their own pace, which helps stimulate self-directed learning. Instructors are free to offer more individualized assistance to those who need it, rather than being in a large lecture hall. AINDT's blended learning is designed to ensure success. Are YOU ready for an exciting new direction? Call AINDT for details today. Instructors are on hand waiting to speak with you! (855) 313-0325.

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How To Start Your Career In Nondestructive Testing

How To Start Your Career In Nondestructive TestingAINDT (American Institute of Nondestructive Testing) can get you started on an exciting, rewarding new career in a lucrative, growing field. Nondestructive testing is used in all areas of modern life, and you can be a part of it! AINDT offers a Nondestructive Testing Technologies Certificate Program that will get you on your way to your high-paying new career. Best of all, we offer on-demand online training—enroll today and start tomorrow! The Nondestructive Testing Technologies Certificate Program also offers a complete curriculum, including all needed materials and textbooks. To finish your training, you will complete a hands-on training program for 18 days at our Baxter, MN facility. Your new rewarding career awaits with AINDT. Call today and talk to one of our instructors: (855) 313-0325. We look forward to speaking with you!

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Radiation Safety Online

AINDT offers many types of NDT training. One of these is a Radiation Safety course online. For $799 inclusive, AINDT offers this 40-hour course on Industrial Radiography and is designed to meet the training requirements for formal certification in Radiation Safety for both X-ray and gamma Radiographers. This course also discusses the requirements of the Department of Transportation and the Nuclear Regulatory Commission and outlines the "Suggested State Regulations for Controlling Radiation (SSRCR)." This 40 hour course exceeds the recommendations and training outline set forth by the NRC training manual available as NUREG/BR-0024 Working Safely in Gamma Radiography and its subsequent ASNT revisions. This course addresses required training topics for radiographic personnel specified in federal (10 CFR 34.43) and equivalent state radiation control regulations, as well as the topics listed in Appendix A to ASNT CP-105-2011 (excluding neutron radiography.) If you're interested in a rewarding career in radiography, contact AINDT about our online Radiation Safety course. Visit us on the web or call for more information (855) 313-0325 today. Instructors are waiting to speak with you!
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Radiation Safety Refresher

Feb01 InspirationalAINDT is your source for industrial radiation safety training. In addition, 10 CFR 34.43 training states require "annual refresher safety training for each radiographer and radiographer's assistant at intervals not to exceed 12 months." AINDT also offers your Radiation Safety 8 Hour Yearly Refresher Training course. For just $129, this online course offers a convenient and cost-effective way to meet the required annual radiation safety refresher training for your company. Our program includes PowerPoint presentations, video lectures, flashcard reviews, graded reviews, graded quizzes and a 60-question final exam. Upon completion of the course, you will receive a digital and hard copy of a certificate of completion for each employee. Keep your radiation safety training current with AINDT. Visit us on the web or call for more details: (855) 313-0325. Instructors are waiting to speak with you!

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Non-Destructive Testing and Inspection Market by Technique, Service, Vertical, and Geography

Non-Destructive Testing and Inspection Market by Technique, Service, Vertical, and Geography - Global Forecast to 2022
Source: Research and Markets, June 2016
http://www.researchandmarkets.com/publication/m8ung6o/3750332

"The Non-Destructive Testing (NDT) Market is Expected to Reach USD 11.39 Billion by 2022 at a CAGR of 8.30% Between 2016 and 2022"

"The non-destructive testing (NDT) and inspection market size was valued at USD 6.46 Billion in 2015 and is expected to increase to USD 11.39 Billion by 2022, at a CAGR of 8.30% between 2016 and 2022. The base year considered for the study is 2015 and the forecast period is between 2016 and 2022. This report provides a detailed analysis of the non-destructive inspection market based on technique, method, service, vertical, and geography. The demand for NDT is increasing all over the world due to regulations by governments for improving the overall safety of industrial assets, workforce, and the surrounding environment. Non-destructive testing is a process to test defects or discontinuities in materials, components, or assemblies without destroying its serviceability."

Click Here to read and evaluate this Global Forecast to 2022.

If you have questions regarding non-destructive testing or our complete Nondestructive Testing Certificate Program contact an AINDT Instructor today 855-313-0325.

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A Change For Good

Oct05 InspirationalGraphicAre you stuck in a dead-end job? Tired of the daily grind, and looking for a new career? AINDT has the solution! Non-destructive testing is an ever-expanding field that will never become obsolete. AINDT offer more than just online classes...we offer vocational training in an exciting, high-demand career in just about every major industry you can think of. Give your career the boost it needs with the best technical school, AINDT. Combining online, interactive learning with hands-on training, AINDT is the trade school to get you certified in an exciting, rewarding new career. Call 855-313-0325 today and get started on your change for good.
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Successful Start to Son's Career in NDT

"I am writing to let you know how happy my husband and I are with our decision to have our son Matthew train in NDT through your excellent program. As you know, he recently accepted an offer and began working at TEAM Industrial Testing in New Jersey. His training has him ahead of the curve for his position as an assistant Radiographer and that is a credit to your program.

Matthew is now working in refineries and power plants in and around the Philadelphia area and loves the challenge every day brings with his new career. He often talks of his great experience in the month of hands-on training in Baxter. The advice and life stories of your entire staff had a great impact on a young man who is both ambitious and excited about his future.

Matthew is the youngest of 6 children in our family, 5 of whom attended colleges and universities with varying degrees in diverse fields of education. It is safe to say his career outlook is as promising or even more so than some of his siblings. Your program casts new light on careers in the trade industry.

We wish you continued success with your program and will most certainly share our positive experience with others. Thank you again for giving our son a great education and an opportunity of a very bright future."

Sincerely,
Barb and Paul C.

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Ultrasonic Velocity and Attenuation Measurements in Geological Samples

Feb02_StartTomorrow

Source: Olympus, Application Notes
http://www.olympus-ims.com/en/applications/ultrasonic-velocity-and-attenuation-measurements-in-geological-samples/?utm_content=sf44187015&utm_medium=spredfast&utm_source=facebook&utm_campaign=Olympus+IMS&sf44187015=1

"Ultrasonic velocity and attenuation measurements in geological samples such as rocks and minerals."

Click Here to read how "Ultrasonic velocity and attenuation measurements in geological samples such as rocks and minerals." You'll learn about the background of ultrasonic velocity, the equipment needed, the procedures commonly used for preparing samples and more.

If you think a career in Ultrasonic testing could be for you, contact the American Institute of Nondestructive Testing to talk directly with an instructor!

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NDT Market Worth 2015-2020 Projections

NDT Market Worth 18.88 Billion USD by 2020
Source: NDT Blog, (http://nondestructivetesting.org/ndt-market-worth/?fb_ref=14b784e1a81a464cbb017de413757dd0-Facebook)
Posted 22 January 2016, By ndtinstructor
Under Non-Destructive Testing Blog

"The NDT market worth is estimated to be valued at USD 12.98 Billion in 2015 and is projected to reach USD 18.88 Billion by 2020, at a CAGR of 7.78% from 2015 to 2020. Years considered for this study are 2014 as the base year and the projections are made up to 2020.

This report provides qualitative and quantitative information about the global NDT market. It identifies the market application gaps, emerging technologies, the need for new product launches, and high potential geographic regions and countries. It also provides a segmentation of the market, tracking the market size, market share, revenue projections, and financial portfolio, covering a broad spectrum of the different methods, end-user, applications, and techniques of NDT industry."

To read the entire report of NDT's market worth projected by 2020, click here.

The American Institute of Nondestructive Testing is a personalized hybrid teaching school for nondestructive testing, that prides itself in top notch eduction, a state of the art facility, great relationships with top employers in the NDT industry and more.

Call today and talk directly to an instructor to answer any questions you may have. We want you to know our school, understand the career field of nondestructive testing to make the right choice for you and your life.

Give us a call, we look forward to answering all of your questions and getting to know you. 855-313-0325.

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Increasing Investment in the Global Transportation Industry Drives Growth in the NDT Market

Source: http://www.marketwatch.com/story/increasing-investment-in-the-global-transportation-industry-drives-growth-in-the-ndt-market-2015-12-08-11203242

Published: Dec 8, 2015 11:02 a.m. ET

"MOUNTAIN VIEW, California, Dec 08, 2015 (PR Newswire Europe via COMTEX) -- Frost & Sullivan finds considerable investment to clear aircraft orders backlog and expand vehicle production to support increasing demand MOUNTAIN VIEW, California, Dec. 8, 2015 /PRNewswire/ -- Stringent regulations for safety and emission control are steering the development of the nondestructive testing (NDT) equipment and inspection services market in the transportation industry. The emphasis on lightweighting and the resulting use of advanced materials are changing requirements for manufacturing and maintenance inspection, accelerating NDT adoption. Even though the transportation sector will lag behind energy industries in terms of NDT market potential, its steady growth and higher acceptance of sophisticated technology will fuel revenues."

Click Here to read the recent analysis from Frost & Sullivan, Analysis of the NDT Inspection Services and NDT Equipment Market in the Transportation Industry. For complimentary access to more information on this research, please visit: http://bit.ly/1X9tSdj

The American Institute of Nondestructive Testing (AINDT) is an interactive online Learning Management System is second to none. Complete reading assignments, view PowerPoint presentations, interact with our flashcard review, watch instructor video lectures, complete graded quizzes, and write essays. Our online courses are available on the iPad, iPhone, and Android Devices! Call 855-313-0325 for more information or to talk directly to an AINDT Instructor.

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Testing The Waters

Testing-the-waters-659032-lSource: http://www.ferret.com.au/c/olympus-australia-341796/testing-the-waters-n2520290?sf35864117=1
By John Smith, January 22, 2015

"Mining operations rely on the continued safe operation of vehicles and machinery to maintain profitability.

Any equipment failure can be expensive in terms of lost production and cost of repairs. An estimate for the cost of lost production for a single dragline is $8000 per hour, making any breakdown costly when it might take weeks for a replacement part to be available.

One way to minimise losses is to continually monitor plant and machinery using non-destructive testing (NDT) methods to ascertain component health, and monitor mechanisms for damage."

Read more at: http://www.ferret.com.au/c/olympus-australia-341796/testing-the-waters-n2520290?sf35864117=1

The American Institute of Nondestructive Testing (Baxter, MN) offers a nondestructive testing (NDT) technologies program in just 16 weeks.

The American Institute of Nondestructive Testing is licensed as a private career school with the Minnesota Office of Higher Education pursuant to Minnesota Statutes, sections 141.21 to 141.32. Licensure is not an endorsement of the institution. Credits earned at the institution may not transfer to all other institutions.

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AINDT Offers State Of The Art Facility to Students

b2ap3_thumbnail_AINDT-Onsite-Training.jpg

The American Institute of NonDestructive Testing has a 4,200 Square FT. facility that offers a state of the art training lab with individual workstations for up to 40 students.

NonDestructive Testing labs are equipped with everything needed to gain the hands-on experience in UT, RT, MT, PT, and VT methods of examination.

Hands-On Training at our facility coming in 2014!

Come to our OPEN HOUSE Saturday, September 7th from 9:00am - 5:00pm and see it for yourself!

 7942 College Road Suite 105, Baxter, MN 56425

 

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AINDT Adds the GE USM GO to it's training facility

b2ap3_thumbnail_USM-GO.jpgThe American Institute of NonDestructive Testing has added the GE USM GO to it's training facility. USM Go is setting new standards in flaw detection instrumentation. The new ultrasonic Go platform from GE's Inspection Technologies business combines a thickness gauge and a flaw detector in one single lightweight instrument. 

USM Go offers a wide range of applications: 

  • Weld Inspection
  • Inspection of Forgings and Castings
  • Inspection of Rails
  • Inspection of Composites

For more information about the GE USM Go device, visit www.gesensinginspection.com.

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