CompInnova System Project Requirements

CompInnova System Project RequirementsThe CompInnova project is foc utilize upon the development of an innovative oversight methodology, with automated and manual capabilities, for any example of composite and met everyic aircraft structures. Within this report, project requirements and specifications related to geomorphological integrity, damage accelerate and development of a swirl robot, are presented and discussed in the following orderA qualified Phased set up (PA) method related to the structural integrity approach, is an advanced non-destructive testing method used to detect component failures (i.e. cracks), and stub be used to assess the component condition. It is presented in chapter 2.An Infrared Thermography (IRT) method, to a fault related the structural integrity approach, is used to tally the presence of flaws by monitoring the flow of heat over a surface, and is presented in chapter 3.A Damage Tolerance (DT) structural integrity assessment proficiency is used t o erupt load for a specified defect size, and predict the required length of time for a sub-critical defect to grow to the size that causes fracture at given load. The DT is presented in chapter 4.Following the structural integrity assessment, a preliminary assessment of the specifications of the repair module of the vortex robot is presented in chapter 5, with the repair module envisaged to perform scarfing or stepped lap repairs on composites as well as bonding repairs on metals.The repair module, as well as the structural integrity assessment systems, is a part of a vortex robot, for which a detailed overview of the existing state of the art in NDT robotic technology is presented in chapter 6. In addition, an overview of the determined project requirements and specifications related to the proposed NDT novel vortex robotic mechanism is presented as well.The project requirements for the CompInnova system has been drafted and agreed by all the participants in this document.Phase begin (PA) technique is an advanced non-destructive testing method used to detect component failures. PA is used for in service inspection and characterization of faults in metallic, as well as composite components. PA uses transducers made up of individual elements that shadow each be independently driven, by which it is able to decrease the complexness and the handling of an ultrasonic testing system. The PA probes are connected to specially adapted drive units with independent, simultaneous emission and reception along each channel.2.1 Phased Array TransducerThe PAUT transducer should be a linear array transducer with number of elements between 16 and 128 and the central frequency should be ranged between 2 and 5 MHz so that minimum ultrasonic inspection requirements are satisfied for a range of different material structures. The element pitch would be between 0.5 and 0.8 mm (high firmness of purpose probe) and it will be defined according to the minimum detectable defect, the properties of the s whoremasterned samples and the part of the acquired ultrasonic images. Furthermore, the array aperture (coverage area rate parameter) and the element length would be in the long run determined according to the final array specifications. The moving velocity for the array would be approximately 20mm/sec and dependent on the characteristics of the scanned sample for flat or slightly curved surfaces.The transducer would be able to be connected with any PA system via an array interface (i.e. 128 element Hypertronics generic array interface) with pedigree length that will be defined by the needs of the outdoor inspections required (i.e. required manipulation region of the probe, especially on large structures) and the quality of ultrasonic data acquired. The array should have the capability to directly be integrated in any manipulator for automated accomplishment however it would also be possible to be used in manual inspection procedures with encoded capability a long the movement direction with the aid of special encoding class that will be continuously attached with the array. By marking the necessary inspection paths on the sample surface and performing several passes with the probe, large areas can be inspected manually. The wedge coupled with the array would have a thickness between 30 and 35 mm and with an angle that is always dependent on the inspection sample thickness (i.e. make sure that reference signals like front and back wall echoes are detectable and visible) and the type of incidence wave required (i.e. longitudinal or shear wave). Precautions will be taken in order to maintain the array at a proper come through arrangement with the testing surface. Water mist, gel or combination of both, are used as a couplant before scanning.The phased array probe would have likely to be interconnected with PA legal documents and effectively all the necessary functions for ultrasonic inspection procedure can be performed by the integrate d system, which are mechanical recognition of the installed ultrasonic transducer by the PA instrument,ultrasonic array element configuration,system calibration for reliable inspections,gathering of acquired ultrasonic data,A-scan, B-scan and C-scan imaging of data,real time or post processing of acquired data,interconnection with manipulators for acquisition of probe X-Y-Z position,mapping software system development for the acquired ultrasonic data, andediting, storing and loading of array configurations.2.2 Ultrasonic Data acquisition Mapping SoftwareUltrasonic data acquisition mapping software would be developed with the aid of installed software environment (i.e. Labview environment) on the PA instrument and therefore processing and visualization of the acquired ultrasonic data can be obtained. All the element firing and probe-wedge configurations can be modified within the software environment. More specifically the user determines the scanning method (linear, half step or F MC) and the number of active elements. This is a procedure that allows the user to adjust all the involved parameters of the ultrasonic hardware by carefully interfacing with the software.Figure 2.1 Representation of an Ultrasonic Data Acquisition Mapping SoftwareThe parameters of array and wedge operation can be adjusted. Operating frequency, active aperture elements, beam step, acquire elements and wedge geometry can be set according to the inspection requirements. Array and wedge geometries can be saved or loaded.After the setting of the array-wedge configuration and all the data from PAUT and manipulator are available the scanning can commence. When operating, any type of acquisition display (A scan, B scan or C scan) would be available and so watch the progress of the inspection. Sizing of defects or regions of interest can take place using different image processing techniques or by simply implementing the typical 6db method.2.3 ConclusionThe PA technique will be employed with in the advanced defect detection software for detecting very small size flaws in aircraft structures, man achieving a high seedcase without increasing the scanning time dramatically. This is achievable with the PA technique, since it is able to reduce the amount of sensors as well as the overall complexity of the system applied, while enabling independent and simultaneous emission and reception along each channel.