Our Projects
Read More Ultrasonic Testing is based on the principle of sound waves transmitting through materials. Sound waves are transmitted and received by peizoelectric probes called ultrasonic transducers. The two types of sound waves used in NDT are longitudinal or compression waves and shear or transverse waves. Typical frequency of sound waves used in ultrasonic testing is 2 to 5 MHz, but lower frequencies such as 1 MHz and higher frequencies such as 10 -20 MHz are also used. |
Read More Ultrasonic thickness gauges work by very precisely measuring how long it takes for a sound pulse that has been generated by a small probe called an ultrasonic transducer to travel through a test piece and reflect back from the inside surface or far wall. Because sound waves reflect from boundaries between dissimilar materials, this measurement is normally made from one side in a "pulse/echo" mode. |
Read More Magnetic Particle testing is based on inducing magnetic field in parts and then looking for breaks in magnetic fields caused by surface discontinuities. MT testing includes methods for magnetization and magnetic mediums such as particles. During MT testing, a magnetic field is applied and magnetic particles sprayed (wet) or dusted and floated (dry particles). An accumulation of magnetic particles is an indication of potential discontinuity. The method is applicable to ferromagnetic materials. |
Read More The principle of liquid penetrant testing (PT) is based on capillary action of liquids whereby the penetrant applied on the surface enters the discontinuities and shows them visibly on the surface. |
Read More Radiography is based on the electromagnetic radiation that transmits through a volume of material and is attenuated to different degrees depending on the amount of material loss. Radiography is a thru transmission method where the object is placed in between the radiation source and detector. A defect is a loss of material and therefore lesser attenuation and higher transmission. This difference in transmission is detected by the radiation sensitive detector that produces grey images where changes in density (darkness) are used to detect discontinuities. |
Read More Phased array testing is an extension of ultrasonic testing. Instead of single element probe used in conventional UT, phased array uses multi-element probes, typically 32 or 64 elements. The elements are pulsed individually with programmed time delays to control the beam steering and focusing. Beam steering allows the beam to sweep over a range of angles instead of a fixed angle in conventional UT. Phased array testing is the same technology as used in medical ultrasound and displays the results in a sectorial scan showing the beam sweep over a range of angles. |
Read More Ultrasonic probes are positioned on either side of the weld, one acting as a transmitter and the other a receiver. The longitudinal sound beam may encounter obstacles along its path which cause reflected and diffracted signals When the probes are moved in a parallel motion along the weld, the resultant waveforms are digitized, stored on hard disk and displayed on the video-screen as a grey scale image. The image provides a sectional view through the weld and can be used for accurate sizing and monitoring of indications. |
Read More Eddy current testing is based on the principle of electromagnetic induction. Alternating current is passed through a coil placed next to the test piece. The coil produces an alternating magnetic field called the primary magnetic field. In response, eddy currents are produced in a material that oppose the primary magnetic field. The magnetic field produced by the eddy current interact with the primary field and affects the impedance of the coil. This change in impedance is measured and displayed by the instrument and is the basis of eddy current testing. Eddy current testing is applicable only to conductive materials. |
Read More Positive Material Identification (PMI) is a fast and non-destructive method for verifying the chemical composition of metals and alloys. Portable and cost-effective, PMI can be performed in one of our state-of-the-art labs, or in the field |
Read More Hardness is a characteristic that applies to a range of materials—metals and nonmetals alike—and is defined as the resistance of the material to deformation, penetration, scratching, or other physical. |
Read More The FERITSCOPE FMP30 measures the ferrite content in austenitic and duplex steel according to the mag‑ netic induction method. All magnetisable structure sections are measured i. e., in addition to deltaferrite also strain-induced martensite, for example, or other ferritic phases. Areas of application are onsite measurements, e.g. of austenitic platings as well as weld seams in stainless steel pipes, containers, boilers or other products made of austenitic or duplex steel. |
Read More Thermographic inspection, also known as infrared thermography, is a non-destructive testing technique used to detect and visualize thermal patterns and temperature differences on the surface of an object or within a material. This method involves using an infrared camera to capture the infrared radiation emitted by an object, which is then converted into a visible image that represents the temperature variations. |
Read More Holiday testing is a non-destructive test method applied on protective coatings to detect unacceptable discontinuities such as pinholes and voids. The test involves checking an electric circuit to see if current flows to complete the circuit. This testing is used to find coating film discontinuities that are not readily visible. |
Read More Heat Treating is the controlled heating and cooling of metals to alter their physical and mechanical properties without affecting the product’s shape. Noted benefits to this treatment are increasing the strength of the material,or achieving certain ease of manufacturing objectives such as improved machinability, formability, or restoring ductility after a cold working operation. In addition to the manufacturing benefits, many industries may rely on this process for better product performance due to increased strength and other desirable material property characteristics. Benefits of Post Weld Heat Treatment: Post Weld Heat Treatment or Stress Relief is a crucial step in maximizing the life of process equipment. PWHT tempers the metal and reduces residual stresses, minimizing the risk of brittle fracture, stress and corrosion cracking and initiation of potential fatigue cracks. This is especially important for equipment used in harsh service environments,such as oil and Gas, Marine industries. |
Read More |