scholarly journals Fast, Accurate, and Reliable Detection of Damage in Aircraft Composites by Advanced Synergistic Infrared Thermography and Phased Array Techniques

2021 ◽  
Vol 11 (6) ◽  
pp. 2778
Author(s):  
Janardhan Padiyar M. ◽  
Luca Zanotti Fragonara ◽  
Ivan Petrunin ◽  
Joao Raposo ◽  
Antonios Tsourdos ◽  
...  
Keyword(s):  
Phased Array ◽  
Robotic Platform ◽  
Horizon 2020 ◽  
Research Initiative ◽  
Infra Red ◽  
Reliable Detection ◽  
Phased Array Techniques ◽  
Aircraft Composites ◽  
Non Destructive ◽  
Evaluation Techniques

This paper presents an advanced methodology for the detection of damage in aircraft composite materials based on the sensor fusion of two image-based non-destructive evaluation techniques. Both of the techniques, phased-array ultrasonics and infra-red thermography, are benchmarked on an aircraft-grade painted composite material skin panel with stringers. The sensors systems for carrying out the inspections have been developed and miniaturized for being integrated on a vortex-robotic platform inspector, in the framework of a larger research initiative, the Horizon-2020 ‘CompInnova’ project.

Interpretation and Evaluation of Near Girth Weld, Short Axial Cracks in a Petroleum Pipeline

2014 ◽  
Author(s):  
Mohamed R. Chebaro ◽  
Achim F. Hugger ◽  
Scott D. Ironside ◽  
Luis A. Torres Garcia ◽  
Dorin I. Rusu
Keyword(s):  
Phased Array ◽  
Evaluation Criteria ◽  
Field Studies ◽  
The Novel ◽  
Oil Pipeline ◽  
Design Specifications ◽  
Girth Welds ◽  
Pull Testing ◽  
Non Destructive ◽  
Evaluation Techniques

A Canadian crude oil pipeline presented a unique cracking mechanism exhibited by short, branched axial cracks located in the vicinity of girth welds. These attributes, among others, translated into added depth sizing complexity for ultrasonic crack in-line inspection (ILI) tools. The scope presented in this paper encompasses results from three crack ILIs carried out between 2011 and 2013. The assessment and mitigation of such atypical cracks required innovative interpretation and evaluation techniques. First, unique ILI analysis approaches and reporting criteria were implemented and validated beyond established design specifications. The goal was to characterize the very short features at girth welds, while understanding and managing sizing limitations associated with conventional ILI analysis methods. This was attained from a laboratory ILI pull-testing program performed on field cut-outs containing cracks of interest, in addition to detailed non-destructive examinations (NDE) completed in field and laboratory settings. Second, customized, depth-independent, likelihood-based evaluation criteria were developed to identify and mitigate cracking with such distinct attributes. The ensuing model was then validated against a comprehensive field NDE program using different sizing techniques (e.g., Phased Array and Multi-angle Shear Wave). This paper highlights the key findings from the analytical, experimental and field studies and describes the novel methodology followed in the assessment of crack-related features reported by ILI.

scholarly journals Plane Wave Imaging through Interfaces

Sensors ◽  
2021 ◽  
Vol 21 (15) ◽  
pp. 4967
Author(s):  
Guillermo Cosarinsky ◽  
Jorge F. Cruza ◽  
Jorge Camacho
Keyword(s):  
Image Quality ◽  
Plane Wave ◽  
Phased Array ◽  
Mathematical Formulation ◽  
Non Destructive Testing ◽  
Arbitrary Geometry ◽  
Destructive Testing ◽  
Wave Imaging ◽  
Imaging Strategy ◽  
Non Destructive

Plane Wave Imaging (PWI) has been recently proposed for fast ultrasound inspections in the Non-Destructive-Testing (NDT) field. By using a single (or a reduced number) of plane wave emissions and parallel beamforming in reception, frame rates of hundreds to thousands of images per second can be achieved without significant image quality losses with regard to the Total Focusing Method (TFM) or Phased Array (PA). This work addresses the problem of applying PWI in the presence of arbitrarily shaped interfaces, which is a common problem in NDT. First, the mathematical formulation for generating a plane wave inside a component of arbitrary geometry is given, and the characteristics of the resultant acoustic field are analyzed by simulation, showing plane wavefronts with non-uniform amplitude. Then, an imaging strategy is proposed, accounting for this amplitude effect. Finally, the proposed method is experimentally validated, and its application limits are discussed.

scholarly journals Inspection of the Composite Materials

2021 ◽  
Vol 10 (3) ◽  
pp. 146
Author(s):  
Yaser A. Jasim ◽  
Senan Thabet ◽  
Thabit H. Thabit
Keyword(s):  
Composite Materials ◽  
Visual Inspection ◽  
Magnetic Particle ◽  
Phased Array ◽  
Ultrasonic Inspection ◽  
Test Method ◽  
Main Method ◽  
Destructive Test ◽  
Eddy Current Inspection ◽  
Non Destructive

<p><em>A non-destructive test method is the main method to examine most of the materials, composite materials in particular. There are too many </em><em>Non-Destructive Test (</em><em>NDT) methods to inspect the materials such as, Visual Inspection, Liquid Penetrate Inspection, Eddy-Current Inspection, Phased Array Inspection, Magnetic Particle Inspection and Ultrasonic Inspection</em><em>.</em></p><p><em>This paper aims to creat a unified methodology for engineers depending on reaserch onion to study the inspection of the composite materials.</em></p><p><em>The researchers concluded that NDT method is the most suitable method for testing any materials and the composite materials. They also recommended to choose the most suitable NDT method as every materials and composite materials have its own properties as well as the inspection methods had its own capabilities and limitations. </em></p>

The effect of variation in phased array element performance for Non-Destructive Evaluation (NDE)

Ultrasonics ◽  
2013 ◽  
Vol 53 (6) ◽  
pp. 1065-1078 ◽  
Author(s):  
David Duxbury ◽  
Jonathan Russell ◽  
Michael Lowe
Keyword(s):  
Phased Array ◽  
Array Element ◽  
Non Destructive Evaluation ◽  
Non Destructive

Phased Array UT Application for Boiling Water Reactor In-Vessel Inspection

2006 ◽  
Author(s):  
Yasuhiro Yuguchi ◽  
Taiji Hirasawa
Keyword(s):  
Phased Array ◽  
Water Immersion ◽  
Crack Depth ◽  
Immersion Method ◽  
Power Company ◽  
Examination Result ◽  
Flat Type ◽  
Visual Testing ◽  
Non Destructive ◽  
Reactor Internals

This paper describes development and application of Phased Array Ultrasonic Testing (UT) and Remotely Operated Vehicles (ROV) for In-Vessel Internals Inspection. Stress Corrosion Crack (SCC) on reactor internals is one of the most important issues since 1990s, and demand to inspect the reactor internals is increasing. Instrument manufactures and inspection venders have developed and applied 1) Phased Array UT technologies and technique as one of our Non-Destructive Examination (NDE) technologies, 2) several kinds of ROVs and special tools for probe delivery and positioning. They are available and effective in In-Vessel Inspection (IVI) and maintenance, which shall be conducted in the narrow room under water. Furthermore, the UT technique for Alloy 182 weld that used to be difficult to detect and size flaws was developed and deployed in the BWR IVI. UT experiences in reactor vessels are increasing in recent years. An immersion technique by Phased Array UT is a key to perform the In-vessel UT on a complex geometric surface to be inspected, and to achieve very wide accessible range by ROVs or simple special tools efficiently. Advantages of the water immersion method and a ROV development result are shown in this paper. Particularly, TOSHIBA developed a flat type ROV for Shroud (Shroud ROV), which can be held against the surface of the shroud by thrusting propellers and scan mechanically through narrow gap within 2 inches {50mm}. The ROV’s positioning accuracy and applications for Shroud UT are shown. As the field experience, this introduces the UT results for CRD Stub tube Alloy 182 weld that is located on the vessel bottom head in Hamaoka UNIT 1 of Chubu Electric Power Company in Japan. An axial SCC flaw was detected by underwater visual testing, after the CRD stub tube leakage was detected. Then UT examination for the flaw was accomplished on the Alloy 182 weld in the vessel. We evaluated that the flaw penetrated into the weld metal of the CRD stub tube-pat weld and didn’t propagate into the low alloy of Reactor Pressure Vessel base metal. After UT sizing, the CRD stub tube was removed and replaced. The examination result was proven to have a good agreement with the actual crack depth. As a result, the efficiency of our Phased Array Technique was confirmed. As the other immersion method application, UT coverage example and accessible range for Shroud inspection are shown.

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