Applus+ cuenta con una amplia gama de herramientas y técnicas que permiten satisfacer las necesidades de cualquier proyecto de inspección, desde simples mediciones de espesor hasta inspecciones totalmente automatizadas. Disponemos de oficinas en todo el mundo, desde las que podemos movilizar unidades en un plazo muy reducido para asegurar una respuesta ágil y rápida.
Manual UT wall thickness measurements is a technique using high-frequency sound energy to conduct examinations and obtain thickness measurements. In an ultrasonic thickness measurements (UTM) inspection, a straight beam is introduced into the test object perpendicular to the surface and round-trip time is measured. Quantifiable information can be gathered for detection of localised or general wall-thickness changes.
The ultrasonic shear wave method is a technique which encompasses angle beam ultrasonic testing to identify subsurface anomalies not found directly underneath the transducer itself. Shear wave ultrasonic testing uses ultrasonic energy that is reflected back to the transducer from indications within a material and or weld. This is displayed as an A-scan, from which an operator can review the relevant information to assess the integrity of the component.
Guided wave ultrasonic testing has been identified as an effective pipe-screening technology capable of assessing damaged areas over extended lengths in pipeline integrity inspections. The technology used by Applus+ for (long-range) guided wave NDT is designed with a minimum footprint of sensors and bands so that the asset integrity inspection can cover zones previously hindered by insulation or poor access. The coatings are now accessible, which reduces the mobilization times. Recent technological improvements mean that Applus+ can deploy guided wave ultrasonic testing in an array of environments and product temperatures. The results obtained from the guided wave UT inspection can be analyzed on-site by Applus+ and the client, enabling technicians to focus their efforts on areas of concern and help reduce the overall costs of system assessment.
Automated ultrasonic C-scan is a technique that utilises ultrasound and mechanised scanners to build a comprehensive plan view of the component being inspected. Typical plan-view imaging is displayed in colour-coded maps according to the thicknesses obtained throughout the inspection area. Calibrated dual-axis encoders provide a scale map to measure the lengths and widths of the indications found.
Guided wave ultrasonic testing has been identified as an effective pipe-screening technology capable of assessing damaged areas over extended lengths in pipeline integrity inspections. The technology used by Applus+ for (long-range) guided wave NDT is designed with a minimum footprint of sensors and bands so that the asset integrity inspection can cover zones previously hindered by insulation or poor access. The coatings are now accessible, which reduces the mobilization times. Recent technological improvements mean that Applus+ can deploy guided wave ultrasonic testing in an array of environments and product temperatures. The results obtained from the guided wave UT inspection can be analyzed on-site by Applus+ and the client, enabling technicians to focus their efforts on areas of concern and help reduce the overall costs of system assessment.
IRIS (internal rotating inspection system) is a technique that can be applied to both ferrous and non-ferrous materials and even non-conductive materials like plastics. With IRIS, the remaining wall thickness of tubes can be accurately measured. IRIS inspection is more accurate than other tube-inspection techniques and has the advantage of presenting information about the geometry of defects. Local defects and wall loss on both sides of the tube can be accurately measured. Defects under support plates can be measured without any limitations. The probe used in IRIS examination is made up of a centering device, an ultrasound transducer and a rotating mirror. An ultrasound pulse is generated in the transducer that is mounted in an axial direction, then a 45-degree rotating mirror in the probe will guide the sound bundle towards the tube wall. Next, there will be an ultrasound reflection (echo) at the inner and outer walls of the tube. These echoes are reflected back and processed by the equipment. The time between these two echoes represents the wall thickness of the tube. Knowing the sound velocity in the material under test enables the wall thickness to be calculated. Water is used to rotate the probe mirror and is also needed as a couplant between the transducer and the tube wall. A calibration standard of the same material and dimensions as the tubes to be examined is used to check the IRIS system response in preparation for the inspection. The tubes should also be cleaned to an acceptable standard.
Various locations within a facility have the potential to see the release of product due to hidden corrosion. These locations are referred to as 'difficult to inspect' and include equipment and piping which is partially buried, soil-to-air interfaces, concrete-to-air interfaces, piping encased in a sleeve or concrete, the support-to-equipment interface known as the 'touch point' and the critical area inside a storage tank. Unless the equipment is lifted, taken out of service or un-earthed, the owner/user is usually unaware that issues exist. LoRUS (Long-Range Ultrasonics) is capable of detecting external or internal corrosion within ferrous or non-ferrous material at a distance of up to 90cm (3 feet) depending on the material and its surface condition, corrosion, coatings and temperature.
Applus+ has developed proven and tested procedures for EMAT NDT and EMAT ultrasonic testing in accordance with applicable codes. The NDT technicians at Applus+ are rigorously assessed on data acquisition and interpretation for EMAT ultrasonic testing, with both internal and external assessment.
Phased array ultrasonic testing (PAUT) provides a fast and reliable UT inspection solution for flaw detection and characterisation across multiple presentations simultaneously. Phased array NDT technology uses multiple elements fired in quick succession to produce beams that can be steered, swept and focused electronically. Inspections across multiple angles are performed concurrently, creating significant cost savings and providing recordable results for further analysis and/or future inspections. Phased array ultrasound is capable of performing multiple applications including NDT welding inspection, CUI inspection mapping, and inspections on composites and components of complex geometry. Through use of accurate scan-planning and beam-steering capabilities, phased array ultrasonic testing increases the probability of detection, while inspection times are reduced to a minimum.
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