Sonometric Inspection
Magnetic in Cape Town

Providing Quality Inspection Solutions, Magnetic Particle and Liquid Penetrant Inspection, Wall Thickness, Ultrasonic Flaw Detection, etc.

All reports are generated by our experienced report coordinators on our custom designed reporting system or the Classification Society reporting software along with our detailed and accurate CAD drawings. Ultrasonic testing uses the transmission of high frequency sound waves into a material to detect imperfections within the material or changes in material properties. Digital wall thickness measurement is used to determine the thickness of different items and detect corrosion that may have occurred on a part that is not open to other types of inspection. As one of the world leaders in ultrasonic thickness measurement services, we have extensive experienced and competent technicians to provide high quality services in accordance to the Classification Societies and/or the Client's requirements. Magnetic particle testing is done by inducing a magnetic field in a ferro-magnetic material and dusting the surface with iron particles (either dry or suspended in a liquid). Surface imperfections will allow the magnetic field to leak out of the part, distort the magnetic field and concentrate the iron particles near imperfections, thus indicating their presence. Magnetic Particle Testing uses magnetic leakage fields to detect surface and subsurface cracks and discontinuities. We can provide the inspection service both in the field and at our head office with high volume processing of many different parts using both fluorescent and visible, wet or dry methods. A radioactive isotope or a x-ray machine is used as a source of radiation dependant on the material, accessibility. When the film is processed, a negative-like picture is obtained that shows the internal characteristics of a part. Our Level II radiographers and appointed ASNT Level III radiographer are experienced in many different specialty techniques involving geometrically challenged parts. Hardness testing is used on welds, heat affective zones and base materials to detect hardness. Olympus remote field probes and equipment are used successfully around the world to inspect heat exchangers, feedwater heaters, and boiler tubes. Two magnetic fields are present: the direct field, in the vicinity of the exciter coil, is rapidly attenuated with distance, while the indirect field is diffused outward through the tube wall. The zone where the indirect field is dominant is called the remote field. The magnetic flux leakage (MFL) technique is based on the magnetization of the material being inspected. As the probe encounters a wall reduction or a sharp discontinuity, the flux distribution varies around that area and is detected either with a hall-effect transducer or with an inductive pickup coil. This technique uses an ultrasonic beam to scan the internal surface of the tube in helicoidal patterns, ensuring that the full length of the tube is tested. Olympus tube inspection systems monitor the front-wall and back-wall echoes in order to measure the tube wall thickness. The internal rotary inspection system probe operates in pulse- echo mode to measure wall thickness, material loss, and defect orientation within the range of 0.5 in. The IRIS probe consists of an ultrasonic transducer firing in the axial direction of the tube. A mirror mounted on a water- propelled turbine deflects the ultrasonic beam in order to obtain a normal incidence wave on the internal wall of the tube. Because the mirror revolves about the axis, the entire circumference of the tube is examined. Non-magnetic impellers for vessels and hydro-electric power plants.