Sunday, January 10, 2010

Uses Top-Rated Non-Destructive Testing Methods - ABC Testing Inc.

ABC Testing Inc. is one of premier company that utilizes non destructive and destructive testing techniques for conducting quality assurance checks. The non-destructive techniques that they make use of during the various inspection processes are ultrasonic, radiographic, magnetic particle, liquid penetrant, eddy current, visual, leak testing, mechanical, welder/welding procedure qualification, Positive Material Identification, Hydrostatic, Ground Penetrating Radar, and Digital Imaging. One or more of non-destructive techniques are used to conduct the inspection procedures. The selection of the testing methods is made by inspectors who are the authorized to conduct the tests.

The inspectors are highly qualified and hold years of experience and expertise in conducting the quality checks utilizing the non-destructive testing methods. They have complete knowledge about quality compliance regulations and standards of various industries and make use of only the approved procedures to specific industry standard. ABC Testing Inc. offers non destructive testing techniques that are widely used in forensic engineering, mechanical engineering, electrical engineering, civil engineering, systems engineering, medicine, and art for product evaluation, troubleshooting, and research.

The mission statement of the company is to help the manufactures increase the quality standards of their goods but cutting down on their cost. They offer inspection services to various industries which include automotive, aviation, construction, power plants, manufacturing, railways, military, and naval industry. They utilize state-of-the testing equipments and tools in order to generate absolute accurate results. The company only uses safe and secures non destructive testing techniques that do not hamper the quality of the goods in anyway. They follow great brilliance parameters when it comes to conducting inspection utilizing non destructive testing techniques.

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Monday, November 9, 2009

Vacuum Box Testing

Vacuum Box Testing is a test method that is used to detect leaks. It is a practical way of testing in comparison to the quantitative measures used to examine objects. Vacuum Box Testing can be used to test objects on which a pressure differential can be created across the area to be examined. The common application areas of Vacuum Box Testing include piping systems, pressure vessels, and storage tanks.

There are various types of boxes or frames used in Vacuum Box Testing depending upon the application area. Vacuum box inspection of lap welds, butt welds and fillet welds. These vacuum boxes are used to examine a small and specific portion of the welded area to produce accurate results. The vacuum boxes used in vacuum box testing are fabricated of thick, clear Perspex with a closed cell foam seal along the bottom edge.

Before proceeding with the vacuum box testing, a vacuum gauge and hose coupling are fitted in the box. Then a soapy solution is put on the line of welding in the testing object. After that the vacuum box is placed over the testing object and a vacuity is created inside the box. Now, the object is observed, if there any drop in the vacuum or bubble formation on the surface then it shows that there is leak in the weld and the object is defected or faulty.

Vacuum Box Testing is a very popular non-destructive testing method that is widely used to test various objects against defects, flaws, leaks, or other imperfections. It is very efficient and effective way of testing various welded objects for any kind of leaks or defects. There are basically two main types of Vacuum Box systems used for performing vacuum testing (a) High Pressure Models that are mainly used for inspection of above ground storage tanks that have been in service. (b) Low Pressure Models used for weld integrity checks on new tank builds where gross defects are the main concern.

Abcndt.com use Vacuum box testing in non-destructive and destructive testing methods to increase customer satisfaction and lower manufacturing costs. They cater to industries, such as automotive, aviation, construction, power plants, manufacturing, railways, military, and naval industry. ABC Testing Inc. have Certified Welding Inspectors (CWI) doing welding inspections for steel, aluminum, specialized metals like Inconel, Monel and NiAlBrz, and many other alloys. The company uses approved procedures to specific industry standard. Browse through www.abcndt.com for more information.

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Wednesday, October 14, 2009

Non-destructive testing is a proven technique used to discover equipment flaws

ABC Testing Inc is a leader in providing new non-destructive testing (NDT) techniques in the area of structural testing. Our processes are proven to discover flaws or weaknesses your equipment may have. Many of our non-destructive testing services are completed in state-of-the-art NDT laboratories. Below are some of the NDT services we offer.

Ultrasonic Testing

Using an ultrasonic flaw detector, our non-destructive testing technicians can provide instantaneous results to reveal the structural design intentions were met.
This technique is used in NDT laboratories to ascertain whether there are any incomplete fusion points, cracks inclusions within a particular structure. Email us to learn more about ultrasonic testing.

Ground Penetrating Radar

Ground penetrating radar is used to collect high resolution subsurface data. This highly effective, non-destructive examination (NDE) technique helps to eliminate mistakes that can occur while drilling.
With this procedure, our certified NDE technicians are able to get fast, accurate data about the quality of subsurface concrete structures that would otherwise be difficult to reach..

Liquid Penetrant

With non-magnetic materials (aluminum, stainless steel, titanium, etc.) liquid penetrates are used to detect surface flaws that would be difficult to discover during a visual inspection.
Our non-destructive testing experts can apply various types of dye to a surface. This dye is then removed and replaced by a white developer that will act as a blotter, drawing out any remnants of the penitent that is left in voids in the structure. The penetrant stains the developer revealing the presence and location of surface breaking structural flaws.

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Monday, October 5, 2009

Nondestructive Testing

Nondestructive testing (NDT) includes an extensive range of analysis techniques that are used to assess the physical attributes of a component or a system. Some of the most popular Nondestructive testing (NDT) methods include ultrasonic, radiographic, magnetic particle, liquid penetrant, eddy current, visual, leak testing, mechanical, welder/welding procedure qualification, Positive Material Identification, Hydrostatic, Ground Penetrating Radar, and Digital Imaging.

With the success rate of Nondestructive testing (NDT) methods, they have become an integral part of the forensic engineering, mechanical engineering, electrical engineering, civil engineering, systems engineering, medicine, and art. The three main things that play major role during Nondestructive testing are (1) Electromagnetic Radiation, (2) Sound, and (3) Inherent Properties of Materials to be tested.

The application areas where Nondestructive testing (NDT) is used include automotive, aviation, construction, power plants, manufacturing, railways, military, and naval industry. NDT has been proved extremely beneficial for product evaluation, troubleshooting, and research as it does not affect the object that being tested in any way. Some of the applied examples of Nondestructive testing are given below:

Weld Verification

The NTD or Nondestructive testing techniques used in welds testing include as industrial radiography using X-rays or gamma rays, ultrasonic testing, liquid penetrant testing or via eddy current and flux leakage. All these tests help to identify cracks in the surface area which are not visible to the naked eye. Welding technique is basically for joining metals, usually the metal joints or connection is prone to extra wear and tear during the product life therefore it is very important to ensure that welding is properly done and all the testing procedures are carefully conducted.

Radiography in Medicine

Radiography has been widely used to image parts or functions of the body. Some elements of human body act in response to radiographic inputs like x-rays or magnetic resonance which help the medical professionals to study the functionality of the human body. It is used to detect bone fractures and diseases and also examine the interior of mechanical systems. Radiography is majorly used in many types of medical treatments and due to its accurate and efficient results has become an integral part of the medical science.

Abcndt.com use reliable non-destructive and destructive testing methods to increase customer satisfaction and lower manufacturing costs. They cater to industries, such as automotive, aviation, construction, power plants, manufacturing, railways, military, and naval industry. ABC Testing Inc. have Certified Welding Inspectors (CWI) doing welding inspections for steel, aluminum, specialized metals like Inconel, Monel and NiAlBrz, and many other alloys. Browse through www.abcndt.com for more information.

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Wednesday, July 22, 2009

Ground Penetrating Radar

Ground-penetrating radar (GPR) is a very popular non-destructive testing method that is used in industries dealing in geophysics. Although, there are many non destructive and destructive testing methods in this branch geology which includes study of physics of the earth and its atmosphere, including oceanography, seismology, volcanology, and geomagnetism but, Ground-penetrating radar (GPR) is one of the most steadfast non-destructive testing method. In this highly reliable non-destructive testing method radar pulses are used to test the subsurface of rocks soil, ice, fresh water, pavements and structures.

Ground-penetrating radar, a non-destructive testing method in which electromagnetic radiation in the microwave band (UHF/VHF frequencies) of the radio spectrum are used test the subsurface structures. The signals reflected back from the tested subsurface structures help to detect metamorphism, voids, cracks, fractures, splits and fissures in the surface. In this non-destructive testing method, transmitting and receiving antennas are used to record the signals. The transmitting antenna transmits high-frequency radio waves in the form of short pulses which penetrate into the ground or tested subsurface structure. On the other hand, the receiving antenna record the signals reflected from the tested subsurface. The variation in the signals helps in generating results of the non-destructive testing procedure.

Working of non-destructive testing method Ground penetrating radar

The penetration depth of radio waves is inversely proportional to the electrical conductivity of the subsurface structure. If the electric conductivity of the subsurface increases the penetration depth will automatically decrease. The depth range of Ground-penetrating radar is dependent on three things electrical conductivity of the subsurface, frequency of the transmitted centre, and the radiation power. The penetration depth of ice is very high up to several hundred meters. Dry sandy soils or massive dry materials such as granite, limestone, and concrete have average penetration depth in the range of 15 m. In moist and/or clay-laden soils the penetration depth in very low up to few centimetres only.

Applications areas of non-destructive testing method –Ground penetrating radar

There number of application areas where GPR, non-destructive testing method is widely used, such as:

• Earth sciences like geography, geology, or meteorology to study bedrock, soils, groundwater, and ice.
• Engineering applications like civil engineering for non-destructive testing of structures and pavements.
• Environmental remediation for identify landfills, contaminant plumes and other related sites.
• Archaeology for mapping archaeological features, such as graves, buildings, tools, pottery or other remaining material evidence.
• Military for the detection of mines, unexploded ordnance, and tunnels.

Contact www.abcndt.com, for ground penetrating radar of concrete structures. They use minimum equipment yet deliver instant, radiation free results.

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Tuesday, June 23, 2009

Ultrasonic Testing

Ultrasonic Testing is a Nondestructive Testing (NDT) method but it is used in various application areas, such as aerospace, automotive and transportation sectors. It is used for the inspection of metals, components, assemblies and composite structures. The process of Ultrasonic Testing involves introducing ultrasonic pulse-waves into the testing object to identify internal defects or to distinguish materials.

The frequency range of the ultrasonic pulse-waves is somewhere between 0.1-15 MHz. Ultrasonic Testing helps to determine the thickness of the object and check things like pipework corrosion. When Ultrasonic testing is done on steel and other metals and alloys high frequency waves are penetrated into the object. In case of concrete, wood and composites less resolution frequency waves are launched into the object.

Ultrasonic Testing – Working Explained

An Ultrasonic Testing system is used for the inspection procedure. The system comprises of certain functional units like pulser/receiver, transducer, and display devices.

Pulser/Receiver: It produce high voltage electrical pulses
Transducer: It produce high frequency ultrasonic energy
Display Devices: Reflects signal strength

The high voltage electrical pulses produced by pulser/receiver are driven to the transducer which in turn generates high frequency ultrasonic energy. This energy wave propagates through the test object in the form of waves. If there is some obstacle in the wave path like a crack then some part of the energy is reflected back. The reflected energy shows that there is a flaw in the surface of the test object. The transducer transforms the reflected wave signal into electrical signal and displays it on the screen of the display device. Imperfections or other conditions in the space between the transmitter and receiver reduces the time of transmission of the signal and reveal the presence of defects.

Advantages Ultrasonic Testing

• Ultrasonic testing makes detection of the deep rooted flaws easy due high frequency waves that penetrate into the testing object.
• Ultrasonic testing also allows to spot flaws that are extremely small and otherwise not visible due to the high sensitivity of ultrasonic pulse-waves.
• Ultrasonic testing requires access to only one surface to detect the flaws and transmit the results.
• Ultrasonic testing produces extremely accurate results in comparison to the other nondestructive methods.
• Ultrasonic testing helps to determine the in-depth internal flaws with easy and also identify thickness of parts with parallel surfaces.
• Ultrasonic testing helps to estimate the size, orientation, shape and nature of defects as well.
• Ultrasonic testing is a highly automated operation and is not affected by the surrounding equipment and materials in the area.

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Tuesday, May 19, 2009

Industrial Radiography

Radiography is a procedure that helps to see objects that cannot be seen with naked eye. The use of electromagnetic radiation helps to view these objects without any hindrance. The concept of Radiography came into existence in 1895 when X-rays were discovered. Radiography soon became widely applicable in various areas for testing and inspection. Today, Industrial Radiography has become an integral part of nondestructive testing (NDT). The electromagnetic radiations penetrate deep into the object and help to inspect it from inside. The technology allows identifying the hidden flaws, and rectifying them at early stage.

Use of Industrial Radiography for Inspection of materials

Industrial Radiography is being widely used for testing and grading of welds of equipments to ensure their quality. It is used to carry out welding inspection in various areas and check the welds on pressurized piping, pressure vessels, high-capacity storage containers, pipelines, and other structural welds. While conducting a welding Inspection with radiography, it is advisable to inspect the component for any external defects. It is very difficult to inspect an irregular welded surface and identify internal defects.

Industrial Radiography can be used to inspect any flat or solid material, such as walls and floorings. It allows testing concrete and locating rebar or conduit and also inspecting pipe walls against anomalies that are caused because of corrosion and mechanical damages. Industrial Radiography is one of the most essential methodologies to maintain high quality standards and carry out welding inspection efficiently and effectively.

Industrial Radiography Equipment

Radiography (X-ray) or high energy X-ray machines are used in Industrial Radiography. These machines generate a radiograph of the object and show internal and external defects. The radiography is generated in variations of black, white and gray. These state-of-the-art machines also help to check the thickness variations and assembly details of inspected object. They are widely used in welding inspections and carry out the welding operations successfully.

Industrial Radiography Safety Precautions

Industrial Radiography is a critical task and involves use of high energy radiations and gamma rays; therefore, it is very important to take safety precautions for the people using this technology. Some of the safety tools used in Industrial Radiography inspections are radiation survey meter an alarming dosimeter, a gas-charged dosimeter, and a film badge or thermo-luminescent dosimeter (TLD). Use of these safety devices help to protect the radiographer against the injuries that can be caused due to overexposure to radioactive rays.

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