Leinders S.M.,Technical University of Delft |
Westerveld W.J.,Technical University of Delft |
Westerveld W.J.,TNO |
Westerveld W.J.,Applus+ RTD |
And 8 more authors.
Scientific Reports | Year: 2015
With the increasing use of ultrasonography, especially in medical imaging, novel fabrication techniques together with novel sensor designs are needed to meet the requirements for future applications like three-dimensional intercardiac and intravascular imaging. These applications require arrays of many small elements to selectively record the sound waves coming from a certain direction. Here we present proof of concept of an optical micro-machined ultrasound sensor (OMUS) fabricated with a semi-industrial CMOS fabrication line. The sensor is based on integrated photonics, which allows for elements with small spatial footprint. We demonstrate that the first prototype is already capable of detecting pressures of 0.4 Pa, which matches the performance of the state of the art piezo-electric transducers while having a 65 times smaller spatial footprint. The sensor is compatible with MRI due to the lack of electronical wiring. Another important benefit of the use of integrated photonics is the easy interrogation of an array of elements. Hence, in future designs only two optical fibers are needed to interrogate an entire array, which minimizes the amount of connections of smart catheters. The demonstrated OMUS has potential applications in medical ultrasound imaging, non destructive testing as well as in flow sensing.
Witts J.,Applus+ RTD
Canadian Nuclear Society - 35th Annual Conference of the Canadian Nuclear Society and 38th CNS/CNA Student Conference 2015 | Year: 2015
RTD-Incotest or insulated component testing, a method of pulsed eddy current, is designed and developed by Applus-RTD for the detection and sizing of corrosion under insulation. RTD-Incotest measures average wall loss over an area beneath the probe. This is accomplished by measuring the decay curve of the eddy current and then utilizes a software algorithm to determine percent wall loss. If there is a verification point this can also give average remaining wall thickness. The benefits for the nuclear industry are: 1) No need to remove insulation. Only requires one verification point. 2) Reduces potential exposure/ maintains ALARA 3) Quick and accurate screening method. For exposed piping there is no need for contact with the piping. So it can be applied for high temperature or for increasing standoff to reduce exposure.
Rosenfeld M.J.,Applus+ RTD
Proceedings of the American Gas Association, Operating Section | Year: 2013
Following its investigation of the San Bruno pipeline accident, the NTSB recommended to the pipeline operator that pipelines in Class 1 and Class 2 High Consequence Areas and in Class 3 and Class 4 areas, be subjected to hydrostatic pressure tests using the spike test format. The concept of hydrostatic testing pipelines considers that if a pipeline can withstand a test to a high pressure, it is logical that it can safely operate at a lower pressure. A discussion covers the difference between the pressure spike test and conventional pressure tests; the technical basis for the pressure spike test; what constitutes an effective pressure spike test; limitations of the spike test; regulatory recognition of spike testing; and under what circumstances the pressure spike test is or is not of value. This is an abstract of a paper presented at the 2013 AGA Operations Conference (Orlando, FL 5/21-24/2013).
Rosenfeld M.J.,Applus+ RTD
Proceedings of the Biennial International Pipeline Conference, IPC | Year: 2014
Pipeline construction projects underway in the US during the 2005 to 2010 timeframe encountered occurrences of unintended diameter expansion during hydrostatic testing of high-strength line pipe. Causes of expansion were in some cases attributed to inadequate pipe manufacturing and procurement practices or in other cases to high external loads present concurrently during pressure testing. This paper considers the implications to long-term pipeline integrity arising with pipe that underwent unintended diameter change with associated strain accumulation. The paper presents a relationship between test pressure and diameter expansion, estimation of the reserve strain capacity, effects on fracture control, and effects on integrity reassessment intervals. The conclusions are that the integrity issues associated with limited magnitudes of diameter change can be readily managed. Copyright © 2014 by ASME.
Applus+ RTD | Date: 2015-05-18
A tool, method, and system for in-line inspection or treatment of a pipeline, with the tool including a first traction module on a first longitudinal end, and a second traction module on a second end. The tool includes at least one work module, such as an encoder module and/or an ultrasonic testing module, which is positioned between the first and second traction modules. A plurality of flexible connecting elements each interconnect one of the first and second traction modules for articulation to the at least one work module. Each of the first and second traction modules has at least one sealing element that causes propulsion in response to a fluid flow in a pipeline to be inspected or treated in one direction and allows relatively unhindered passing of the fluid flow in an opposite direction.
Applus+ RTD | Date: 2015-02-26
A system for radiographic inspection of welds from at least a portion of a vertical wall such as the wall of a storage tank for gas or oil wherein the wall comprising a plurality of metal plates connected by means of the welds, the system comprising a frame comprising a first sub frame arranged to be positioned, in use, on a first side of the portion of the wall and a second sub frame arranged to be positioned, in use, on a second side of the portion of the wall which lays opposite to the first side of the portion of the wall. The system comprises a radiation source which is attached to the first sub frame for transmitting electromagnetic radiation towards the weld and a radiation detector which is attached to the second sub frame for detecting radiation which has travelled through the weld for carrying out the inspection.
Applus+ RTD | Date: 2012-09-05
A method and system are described for examining the interior material of an object from a surface of an object using ultrasound having a frequency of at least 100 kHz. The method comprises the step of transmitting at least a first ultrasound signal by a first ultrasound transmitter of a first number of ultrasound transmitters to the interior material of the object for forming a first image in order to determine, according for example to the principle of inverse wave field extrapolation, where in the interior material of the object reflections and/or diffractions occur. Reflections and/or diffractions of the first ultrasound signal from the interior material of the object are received using a second number of ultrasound receivers which are acoustically coupled to the surface of the object at positions which are distributed in at least one dimension of the surface of the object.
Applus+ RTD | Date: 2016-01-08
A method and system are described for examining the interior material of an object from a surface of an object using ultrasound having a frequency of at least 100 kHz. The method comprises the step of transmitting at least a first ultrasound signal by a first ultrasound transmitter of a first number of ultrasound transmitters to the interior material of the object for forming a first image in order to determine, according for example to the principle of inverse wave field extrapolation, where in the interior material of the object reflections and/or diffractions occur. Reflections and/or diffractions of the first ultrasound signal from the interior material of the object are received using a second number of ultrasound receivers which are acoustically coupled to the surface of the object at positions which are distributed in at least one dimension of the surface of the object. With each of the second number of ultrasound receivers, a receiving signal is generated from the received reflections and/or diffractions of the first ultrasound signal from the interior material of the object, and each of the receiving signals generated by one of the ultrasound receivers is processed separately into a separate dataset. The separate datasets of all the ultrasound receivers are combined to the first image.
Applus+ RTD | Date: 2010-05-11
Method of determining an edge of a first anomaly in a wall of a pipeline from a first set of data elements representing measurements of the wall of the pipeline. An element of the first set comprises a first coordinate, a second coordinate, and a parameter being indicative for the presence and/or severity of the first anomaly a position along the wall indicated by the first and second coordinate. The method comprises determining a data element that is associated with a maximum in the severity of the first anomaly; evaluating a value of the parameter by comparing with a predetermined threshold; determining an initial edge data element for which the parameter has reached the threshold; determining a next edge data element; determining further edge data elements; and determining the edge of the first anomaly by combining the first and second coordinates of the determined edge data elements.
Applus+ RTD | Date: 2014-05-20
Computer software for pipeline operations, pipeline inspection and pipeline integrity. Scientific research and development; Scientific and technological services, namely, scientific research, analysis, testing, design and development of computer hardware and software, all in the field of pipeline operations, pipeline inspection and pipeline integrity.