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Difino
| • | Nondestructive testing (equivalently called NDT, nondestructive evaluation, NDE, nondestructive inspection and NDI) is testing that does not destroy the test object. While destructive testing usually provides a more reliable assessment of the state of the test object, destruction of the test object usually makes this type of test more costly to the test object's owner than nondestructive testing. That there is a tradeoff between the cost of the test and its reliability favors a strategy in which most test objects are inspected nondestructively; destructive testing is performed on a sampling of test objects that is drawn randomly for the purpose of characterizing the testing reliability of the nondestructive test.
The content of the American Society for Nondestructive Testing's journal Materials Evaluation and of the textbook Nondestructive Evaluation: A Tool for Design, Manufacturing and Service suggests a smaller scope for the discipline called "nondestructive testing" than is implied by its label. For example, the discipline appears to exclude nondestructive biomedical tests, such as urinalysis.Its testing reliability is defined by a test's perfect gold standard test, by a binary variable, to be called OK/not_OK, and by the set of permissible values of OK/not_OK. By definition, the nondestructive test errs when its measurement of OK/not_OK differs from the measurement of the same quantity by the perfect gold standard test.
OK/not_OK is defined by division of the Cartesian product of the sets of values belonging to the variables that are measured by the nondestructive test into two, non-overlapping parts, assignment of OK to one of these parts and assignment of not_OK to the other. In applications of NDT to quality control, OK can be associated with success by a test object, in meeting the requirements of its specification, and not_OK with failure.
NDT's Defect Detection Tests attempt to detect defects (e.g., cracks, intergranular corrosion, pits and inclusions) before they can cause structural failure, leaks or other, unfavorable outcomes. In this case, the test has a single, measured variable, with the values "not detected" and "detected". Let us establish correspondence of this test's "not detected' to OK and "detected" to not_OK.
The Cartesian product of the values measured by a Defect De
Source: [wikipedia: nondestructive testing]
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quality_engineering:technology
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Academy of Infrared Thermography |
| | link to a discussion on analyzing mechanical systems using infrared thermography.
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Advanced NDT Instruments UK - Non-Destructive Testing Equipment |
| | uk based suppliers of non-destructive testing equipment, including hardness testing devices, thickness gauges, eddy current instrumentation and corrosion mapping systems
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All Test International Inc. |
| | international ndt company based in canada. our services include radiography, ultrasonic, pipeline integrity, magnetic particle, liquid penetrant and visual testing. api, cgsb and snt certified.
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Amdata Non Destructive Testing Solutions |
| | wesdyne amdata provides ultrasonic non-destructive testing (ndt/ndi/nde) systems and services for detection of corrosion, cracks, delamination and weld flaws within flat, curved and complex surfaces including airfoils, tanks, pipelines and boilers
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AMEC Engineering Pty Ltd |
| | specialising in non-destructive testing, metallurgical consultancy, mechanical testing and inspection/ expediting. ofices in perth, adelaide, melbourne and sydney australia.
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American Society for Nondestructive Testing |
| | the organization of ndt professionals. offers many services and products of interest to the ndt community.
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Applied Inspection Systems, Inc. |
| | ais provides quality nde and mechanical integrity services for the utility, petrochemical, gas, manufacturing and pulp and paper industries nationwide.
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ARTEC.System |
| | artec.system sets up devices for industrial applications. our systems measure humidity and fat in different materials, quickly and easily. nmr is used in an innovative way: non-destructive testing for applications like food sector, wood, pulp, cosmetics, etc.
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Auto-Ut |
| | auto-ut ltd, have created an automated ultrasonics simulator and manual ut simulator to aid in training and competence testing of operators and or proceedures.
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BAKER Consulting Company |
| | nondestructive examination level ii and level iii services; materials joining procedures and personnel qualification asme and state stamp program development; quality control/project surveillance quality assurance
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Boldstar Infrared Services |
| | canadian thermography company with some useful background material on infared thermography, including a thermography screensaver.
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Britek SA, Inc. |
| | britek offers a full line of ultrasonic transducers. we specialize in, but are not limited to, thickness gauge, flaw detection, nuclear transducers, and custom built transducers.
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Center for Nondestructive Evaluation, Iowa State University |
| | research center that focuses on the research and development of new theories and techniques for use in quantitative nde.
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Certified Inspection Services Ltd. |
| | visual weld inspection and non destructive testing. we inspect cranes, elevating work platforms, pressure vessels, pipe, forklifts, steel shop fabrications, steel buildings, bridges, towers, corossion investigation and fall protection systems.
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CompuscanIR |
| | a division of stockton infrared thermographic services, inc. specialized infrared p/pm inspections on the electrical and mechanical systems that support the uninterrupted operation of computer centers.
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Control Mesure System |
| | manufacturer of eddy current and ultrasonic equipment.
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CSNDT: The Canadian Society for Nondestructive Testing |
| | the canadian society for nondestructive testing home page. source for finding information on and gaining contacts in the field of nondestructive testing, including job resources for the ndt professional.
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Diverse Technologies |
| | diverse magnets, magnetic field and flux measuring products and consultancy to industry.
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Don E. Bray, Inc. |
| | research and consulting in ultrasonic and nondestructive evaluation. laboratory facilities and staff provide expertise in mechanical engineering, materials characterization, stress evaluation and design of experiments.
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Eclipse Scientific Products Inc |
| | eclipse scientific products inc. is dedicated to developing leading edge tools - including ultrasonic transducers, calibration blocks, and scanning systems - for the non-destructive testing (ndt) industry.
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ECNDT 2006 |
| | 9th european conference on non-destructive testing, berlin 2006
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Elander Inspection Ltd. |
| | offers traditional non-destructive testing and visual inspection services, including eddy current and remote field tube inspection.
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Ettemeyer AG |
| | ettemeyer ag is a manufacturer and service provider for full-field, non-contact measurement of strains, stresses, vibrations and for non-destructive inspection. shearography, espi and ndt solutions worldwide.
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Feinfocus |
| | x-ray inspection systems and tubes.
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Foerster Instruments Incorporated |
| | non-destructive testing equipment using eddy current testing methods for components, uxo unexploded ordnance, flaw detection, magnetic field strength measurement and permeability testing.
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General Stress Optics Inc. |
| | general stress optics specializes in software controlled holographic interferometry, moire techniques, and speckle techniques applied to: optical contouring, stress/strain analysis, material property determination, and non-destructive evaluation.
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Geni-Metal |
| | inspection laboratory of non-destructives methods specialized in metallurgy, welding, inspection and coating.
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Hotspot Thermal Imaging Systems (UK) |
| | use thermal imaging cameras to detect hotspot infra red radiation emitting from machines and equipment prior to critical failure.
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Infrared Inspection Service |
| | infrared thermal imaging. independent certified infrared inspections located in south jordan, utah.
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Inidam |
| | inidam provides radiographic, magnetic particle, ultrasonic, penetrant and heat treatment examination by non destructive testing (ndt) carried out by personnel with pcn level 3 and asnt approvals.
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InspectionJobs |
| | ndt and industrial inspection career resource center. job postings, resume database, industry news, industry links.
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International School of Aerospace NDT Limited |
| | a british institute of non destructive testing accredited training school for all methods of aerospace ndt level i, ii and iii approvals.
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Isovac Engineering Radiflo |
| | since 1969, our mission has been to provide excellence in leak detection with products and services.
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IsoVac Engineering, Inc. |
| | isovac manufactures radiflo leak testing equipment. isovac also offers leak testing services that comply with the following military standards: mil-s-202, mil-s-883, mil-s-19500, mil-s-750, mil-s-38103 b
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Kleinfeld Technical Services, Inc. |
| | kts offers infrared thermography services and consulting. we combine it with fea- and cfd-based heat transfer analysis for increased effectiveness and efficiency. applications include buildings, process & product design and improvement.
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Lavender International Non Destructive Testing Consultancy |
| | provision of ndt training, examination, and consultancy; including pcn/snt to levels 1, 2, and 3 in vt mt pt ut rt et.
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Magnetic Analysis Corp. |
| | manufacturer of eddy current, ultrasonic, magnetic analysis and flux leakage equipment for nondestructive testing of bar, tube and wire parts.
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Material Measurements Ltd |
| | material measurements ltd. are a non-destructive testing (ndt) company based in the uk and ireland. we provide the following inspection services: radiography, dye penetrant, magnetic particle, ultrasonics and eddy current, plus level iii services.
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MediVac Technologies |
| | medivac technologies performs helium leak testing and related forms of non destructive testing to all types of industry.
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Megasonic Industries Pvt. Ltd. |
| | manufacturers of ultrasonic thickness gauges, megasonic industries pvt. ltd., india, mumbai
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N.T.S. Ultrasonics Pty Ltd |
| | custom designed systems and consulting, especially for ultrasonic non-destructive testing and ultrasonic rail flaw detection.
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NDT Consulting Group |
| | ndt consulting, program administration, ndt training and qualification services. on-site training in nondestructive testing. procedures, level iii services, third party consultant. services offered worldwide.
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NDT Resources Center |
| | this site was created with funding from the national science foundation to serve as a focal point for ndt education on the internet.
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NDT.org |
| | online information for the ndt community. includes job openings, vendors and their products, and a news section devoted to the latest headlines in nondestructive testing.
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NDTCabin |
| | the internet magazine for ndt professionals - updated daily with ndt jobs and ndt news.
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NDTCertCentral.com |
| | ndtcertcentral provide online, on demand storage and retrieval of documents such as training certificates, certfication documents, etc for ndt and qc personnel.
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Non Destructive Testers Ltd. - Trinidad, W.I. |
| | providers of a full spectrum of non destructive testing and examination for both the energy and non-energy sectors.
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Non Destructive Testing Services |
| | business specializes in high volume rapid turn-round of mpi, usi, lpi and ec sorting of manufactured components and raw materials. site contains descriptions of tests and contact details.
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Nondestructive Testing Information Analysis Center (NTIAC) |
| | comprehensive web site devoted exclusively to nondestructive testing. offers free literature searches to the ndt community.
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Nondestructive Testing Management Association |
| | dedicated to the management of ndt projects and personnel. has an extensive database of ndt companies, searchable by service or product.
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Oregon Infrared |
| | infrared imaging reveals maintenance problems before they become acute and expensive.
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PQT Services, Inc. |
| | consulting and training provided in radiation safety, magnetic particle, liquid penetrant, ultrasonic, visual and radiographic examinations.
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QSL Plus. Quality Services Laboratories |
| | comprehensive nondestructive testing, inspection and consulting services for every industry.
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Quest Integrated |
| | quest offers ndt inspection services, training, and consulting services. including use of lotis to inspect fired heaters, furnaces, reformers, heat exchangers, etc.
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Rail Technology International |
| | rail technology international is actively engaged in design, manufacture sales and service in the field of rail management and automated ultrasonic non destructive testing.
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Remote Access Technology Inc |
| | utilizes industrial remote access technology by rope access services for inspection and maintenance by applying non destructive testing by certified technicians.
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Remote Access Technology USA |
| | remote access technology specializes in industrial rope access for inspection, maintenance and nde services. multi-disciplined technicians use rope access methods to safely reach areas of concern and perform work from small tasks to major projects.
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RNDT, Inc. |
| | specialty commercial nondestructive testing laboratory offering radiographic, ultrasonic, magnetic particle, liquid penetrant, acoustic emission and visual/cwi services to all industries.
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Sattler Consultants, Inc. |
| | provides nondestructive testing level iii services in consulting, training, auditing, procedure writing, inspection technique development, written practices and expert witness testimony.
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Saugnac gauges |
| | saugnac gauges allow measurement of changes in cracks and distortions
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Scientific Technical Inc. |
| | si-tech testing laboratory, a quality control testing lab providing nondestructive (ndt), etc.
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SENSSONIC |
| | we are pioneers of nonlinear wave methods of material inspection. senssonic is focusing on applying its knowledge and expertise primarily to the aesospace industry, a heavy user of composite materials for which conventional ultrasonic methods do not work.
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Sercal NDT |
| | non destructive testing to the rail industry. repairs & servicing.
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Sonalyse |
| | acoustic solutions for quality control
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Talon NDT |
| | non destructive testing (ndt) & rope access training courses
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TCR Engineering Services |
| | india based, nabl & iso 17025 accredited material testing laboratory for chemical, mechanical, ndt, pmi, inspection and research per international standards.
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Technical Scanning Systems |
| | providers of ndt with experience in the petrochemical, refining industry, power generation. primary areas of expertise are in eddy current and automated ultrasonic system.
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Technologies Consulting International Inc. |
| | providing ndt professional and inspection services; sales and marketing of quality and high technology ndt systems/products.
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TesTex, Inc. |
| | using state of the art technology, testex is a non-destructive testing company specializing on plant equipment, such as boilers, heat exchangers, pressure vessels, pipelines and storage tanks.
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The e-Journal of Nondestructive Testing |
| | the online journal of nondestructive testing & ultrasonics. very useful online resource for anyone with an interest in ndt.
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Themal Imaging |
| | thermal imaging survey by intersafe ltd carrying out thermograpic surveys and thermography for preventive maintenance, electrical & mechanical system condition monitoring, energy conservation, process control, non destructive testing, security, surveillance, healthcare and research and development
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Thermal Imaging Surveys |
| | uses high definition military specification equipment for ground and aerial surveys.
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TJ Engineering & Inspection |
| | tj provides nde, qa/qc, lifting gear inspections and rope access services. industry sectors serviced are offshore oil & gas, industrial fabrication and in-service inspections for manufacturing plants.
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Tri-Tip Probe |
| | we have non-ferrous eddy current probes and tubing inspection where you can achieve non destructive testing of your tri tip probe.
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Ultraoptec |
| | ultraoptec develops and manufactures laser-ultrasonic systems and optical probes for ndt. links to some introductory papers on laser ut.
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Veritec |
| | non destructive testing ndt, verification service including ultra sonic testing, inspection services, time of flight defraction totd, corrosion mapping and sub sea inspection in industries such as oil & gas.
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Walls Inspection Company Inc |
| | quality assurance, third party inspection, and non-destructive examinations.
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Welding inspection in México |
| | welding inspection, x rays, ultrasonic, magnetic, penetrant, visual test, more than 25 years of experience in méxico and overseas. (in spanish only)
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X-ray Industries |
| | providers of ndt supplies and services.
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Zetec, Inc. |
| | eddy current specialist in the nondestructive testing industry specializing in the design and manufacture of eddy current instruments, software, probes, and accessories.
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Zevenaar Elektronica & Sensoren |
| | sensor and electronics design. ultrasonic and electromagnetic sensors.
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