Introduction
The American Society for Nondestructive Testing (ASNT) is an internationally recognized organization with a history dating back to the 1940s.
Founded in 1941 at the University of Detroit, the American Society for Nondestructive Testing (ASNT) was established in response to the growing need to develop and standardize nondestructive inspection (NDT) techniques. Its main objective has been to provide advanced methods for the evaluation of the integrity of materials and structures without compromising their functionality, thus enabling greater accuracy in monitoring critical conditions in various industries such as: aerospace, oil and gas, and manufacturing.
During World War II, Non-Destructive Testing (NDT) methods acquired strategic importance, particularly in the military industry. The inspection of equipment and aircraft using NDT techniques was essential to ensure both operational safety and efficiency in wartime missions, reducing risks and improving the reliability of materials used in critical situations.
What is Non-Destructive Testing (NDT) and what are its main applications?
Non-Destructive Testing (NDT) is an evaluation method that allows the inspection of materials, components, or structures without compromising their integrity. These techniques ensure that the tested object retains all its original properties, which makes them essential in sectors such as aerospace, oil and gas, and manufacturing, where safety and reliability are critical. Among the most common techniques are ultrasonic inspection, industrial radiography and magnetic particle detection, which identify internal defects and surface flaws.
I invite you to learn more about non-destructive testing with the following video:
The Evolution of Nondestructive Testing: From World War II to the Aerospace Industry
The first steps: the origins in wartime
As the demand for effective inspection methods grew during World War II, ASNT began humbly as an informal group of scientists and engineers meeting in small classrooms at the University of Detroit. The initial purpose of these meetings was to share techniques and solutions to materials inspection problems, a field that was rapidly evolving due to the demands of war. In its early days, ASNT had no formal structure, no membership dues and no bylaws. These meetings were more like a club of curious scientists seeking to improve nondestructive inspection methods, using technologies such as X-rays and gamma rays to ensure the quality of materials.
Impact on the Aerospace Industry
During the Cold War, NDT technologies became a key ally for the aerospace industry, particularly in inspecting aircraft components and ensuring structural integrity for the safety and effectiveness of operations. In a context where every detail was critical, Nondestructive testing became an essential tool for detecting flaws in structural components and aircraft engines. Radiography and ultrasound were particularly important technologies in this field, and ASNT facilitated their development and adoption through its conferences and publications. Thanks to these efforts, ASNT helped establish high-quality standards in material inspection, which are still indispensable for the aerospace industry today.
A Secret Mission in the Army
During World War II, some of ASNT‘s founders worked on highly classified military projects. These projects included the inspection of critical equipment such as aircraft and tanks, which helped strengthen the reputation of Nondestructive testing or non-destructive evaluation as an essential tool for safety and reliability in industrial settings. Many of these projects were so confidential that they could not be discussed openly, even within ASNT, which created an aura of mystery around some of the innovations of the time.
The radiography-Inspired Logo
Interestingly, the first ASNT logo was inspired by radiographic techniques, which were one of the main NDT technologies at the time. Industrial radiography played a crucial role in material inspection during and after the war, so many of ASNT’s early members were specialists in this technique, influencing the choice of the logo design.
This first logo, adopted in the 1940s, shortly after the organization was founded in 1941, was notable for its black and white appearance, featuring the capital letters “SNT” (Society for Nondestructive Testing). The design clearly reflected ASNT’s initial focus on industrial radiography and other emerging NDT technologies of the era.
The choice of a monochromatic and sober style was aligned with the principles of radiography, which allows internal images of structures to be obtained through X-rays, revealing crucial details clearly and precisely. This minimalist design symbolized the ability to “see the invisible,” a key concept in radiography and nondestructive testing. Thus, the logo not only represented the organization but also its mission to illuminate hidden details within materials without causing damage.
Over time, the logo evolved along with the organization, but it always retained the spirit of precision and clarity inherent to nondestructive testing. ASNT continued to use its logo to reflect its commitment to technological innovation and its global expansion in the field of NDT.
Evolution of ASNT logos over time
Creation of the “Materials Evaluation” Publication
In its commitment to promoting knowledge and innovation in Nondestructive testing, ASNT launched the Materials Evaluation magazine during its early years. This publication has become a reference source in the NDT industry, serving as a vehicle for disseminating research, technical discoveries, NDT technologies, and case studies that have influenced the evolution of the field. Through Materials Evaluation, ASNT has fostered collaboration among academics, researchers, and industry professionals, ensuring that the latest advances in NDT techniques and technologies are accessible to all its members.
Manuals and publications on nondestructive testing (NDT) together with a commemorative medal and international flags
The Debate on Certification: The Perspective of Field Engineers
In the 1970s, ASNT faced a minor internal crisis when field engineers, who worked in more challenging industrial environments, began to question the certification standards that were being developed. These professionals felt that the established guidelines did not adequately reflect the real conditions they faced in factories, power plants, and drilling platforms. This “rebellion” led to intense debates at ASNT conferences, and as a result, changes were made to include more practical field experience in the certification standards.
Unforeseen Innovations and Discoveries
One of the most curious anecdotes in ASNT’s history is related to ultrasonic technology. In the 1960s, while engineers experimented with ultrasonic waves to detect flaws in materials, they made an accidental discovery that transformed the field of medicine. They found that sound waves could also be used to detect abnormalities in human tissues, leading to the development of medical ultrasounds, which are now commonly used in hospitals and clinics.
The Conference That Almost Didn’t Happen
One of the most critical moments in ASNT’s history was when a conference in the 1950s was nearly canceled due to financial issues. The organization could not make an initial payment to the hotel where the event was to take place. However, a group of ASNT engineers, committed to the cause, offered to cover the costs out of their own pockets, ensuring that the conference could take place. This incident became an emblematic example of the community spirit and dedication that has characterized ASNT over the years.
Early Conferences and Their Impact on the Industry
The early conferences organized by ASNT during the 1950s and 1960s marked a turning point in the spread of Non-destructive testing. These events brought together experts from various parts of the world who shared their knowledge and experiences in using emerging technologies like radiography and ultrasound. These conferences not only helped establish ASNT’s reputation as an industry authority but also fostered the exchange of ideas that led to significant improvements in NDT practices. The influence of these conferences was felt in many industries, which began to incorporate the methods discussed to improve the safety and quality of their products.
The “Lost X-ray Machine”
Another curious anecdote in ASNT’s history occurred during a demonstration at a conference when an X-ray machine, which was to be part of a crucial exhibit, was mistakenly sent to a hospital instead of the conference center. Although the equipment eventually arrived at the correct location, the incident caused panic among the organizers and became a recurring joke at subsequent ASNT meetings.
Unusual Collaborations: Trains and Ships
In the 1960s, ASNT played a key role in inspecting transportation infrastructures such as trains and ships. During a project where they were evaluating high-speed train rails, engineers discovered that vibrations generated by the trains interfered with the testing equipment. This problem led to innovations in testing techniques that are still used today in transportation infrastructure inspections.
International Expansion
In the early 1970s, ASNT began expanding internationally. One of the first conferences outside the United States was held in Europe, remembered not only for the technical advances discussed but also because a heavy snowstorm stranded many attendees at the event venue. This incident forced engineers to share transportation and hotel rooms, creating unexpected connections between professionals from different countries and helping to boost ASNT’s global expansion.
Certification Programs and Continuing Education
Over the years, ASNT has been a pioneer in designing and implementing certification programs for technicians and engineers in NDT. These programs have established a competency framework that ensures industry professionals possess the knowledge and skills needed to perform precise and safe evaluations. Additionally, ASNT has promoted continuing education, offering seminars, courses, and training materials to keep professionals updated on the latest techniques and regulations. Also, ASNT’s certification programs ensure that professionals are well-versed in the latest NDT technologies, maintaining high standards in the field. This has been key to raising quality standards in the industry and creating a network of highly qualified professionals committed to the safety and efficiency of industrial processes.
The Evolution of Certifications
In the 1980s, when ASNT began formalizing its certification programs, there was some resistance from experienced professionals who had been working in the industry for years. Some veterans argued that certification could not replace the practical experience accumulated over decades. This debate led to a balance between practical experience and certification requirements, solidifying ASNT as the leading authority in NDT professional certification.
Development of International Standards
Since its founding, ASNT has played a fundamental role in developing international standards for Nondestructive testing (NDT). These standards have been widely adopted across various industries, from construction and automotive to nuclear energy and aerospace. The standardization of inspection methods has allowed for greater consistency and quality in material evaluation processes, strengthening the safety and reliability of assets worldwide. SNT, through its work with international organizations like ISO, has helped align NDT procedures globally, facilitating the export of NDT technologies and services.
An Inspiring Legacy
ASNT is not only a testament to the evolution of Non-destructive testing but also to the dedication and passion of its members over the years. Since its founding in 1941, each president and member has worked to move the industry forward, ensuring safety and reliability in industrial applications. With a legacy full of innovation, commitment, and a global community, ASNT remains a beacon of excellence in NDT, inspiring future generations to continue this noble work.
Presidents Who Left Their Mark
Several presidents have been key to ASNT’s success and expansion. Here are some of the most notable:
- Robert C. McMaster – 12th President (1952-1953): He was a pioneer in the standardization of NDT and the creation of fundamental publications like Materials Evaluation. The Robert C. McMaster Award honors his contribution to the NDT field.
- Donald O. Thompson – 33rd President (1973-1974): A promoter of advanced NDT research, he played a key role in introducing new technologies to the industry. The Donald O. Thompson Award is a recognition of his legacy in innovation.
- Robert E. Green Jr. – 49th President (1989-1990): He strengthened certification programs and played an essential role in ASNT’s international expansion. His leadership helped establish a more modern educational system.
- Lester Mehl – 29th President (1969-1970): An innovator in ultrasonic technology, his contributions were so significant that the Lester/Mehl Honor Lecture was created in his honor.
- Charles N. Sherlock – 35th President (1975-1976): He played a fundamental role in expanding educational programs and creating standards. The Charles N. Sherlock Meritorious Service Award honors his service to ASNT and the industry.
- Ward Rummel – 47th President (1987-1988): Known for his dedication to technical excellence, he helped establish the high engineering standards that ASNT maintains today. The Ward Rummel Award pays tribute to his legacy in engineering.
- Lou DiValerio – 63rd President (2003-2004): Famous for professionalizing NDT technicians and advocating for their crucial role in the industry. The Lou DiValerio Technician of the Year Award was created in his honor.
- Kevin Smith – 71st President (2017): In recent years, Kevin Smith modernized ASNT, focusing on the digitalization of certification programs and promoting the adoption of emerging technologies in the global NDT industry. His presidency marked a turning point towards ASNT‘s modernization.
The Digital Era and ASNT
ASNT has adapted to technological changes over recent decades, including the transition to digitalization. Following the COVID-19 pandemic, ASNT accelerated the digitalization of its certification and training programs, offering online courses and exams to ensure the continuity of NDT professionals’ training.
This modernization has allowed more technicians and engineers to access ASNT training from anywhere in the world, providing access to knowledge at a time when mobility was restricted. The adoption of digital technologies has proven to be a strategic step for ASNT, strengthening its role as a global leader in NDT training and certification.
Conclusions
Since its founding in 1941, ASNT has come a long way, evolving from a small informal group to becoming a global leader in the Non-destructive testing industry. Throughout its history, ASNT has faced challenges, driven unexpected innovations, and maintained a community spirit that has been key to its success. The anecdotes and curiosities behind its history reflect the dedication and passion of its members to advance the field of NDT and ensure safety and reliability in various industries.
The upcoming annual ASNT conference will be held from October 21 to 24, 2024, in Las Vegas, at the Caesars Forum, with recommended accommodation at Harrah’s. This conference is one of the most important events in the world of Nondestructive testing, with over 2,200 expected attendees and more than 200 exhibitors. This will be the 83rd edition of this event, which continues to be a key gathering point for industry professionals, facilitating knowledge exchange and advancements in inspection technologies (EventsAir) (ASNT Portal).
References
- Charles Hellier (2003). Handbook of Nondestructive Evaluation. McGraw-Hill.
- American Society for Nondestructive Testing. (2024, October 10). In Wikipedia. https://en.wikipedia.org/wiki/American_Society_for_Nondestructive_Testing
Loading...
