ISIS - Shearography NDT
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The aerospace industry, as well as other industries requiring high-performance materials, are meanwhile manufacturing the majority of the components using composite materials. Some examples are printed circuit boards, rubber compounds, metal sandwich components, and carbon or glass-fiber reinforced plastics (with or without honeycomb or foam core). Due to the high quality standards and the applicable safety directives, highly precise and non-destructive test methods are indispensable for both manufacturing and maintenance. The ease of use and easy adaptability to new components or materials...

SHEAROGRAPHY: PRINCIPLE Besides the detection of clearly visible defects (see image left above: hail damage), the actual size and relevance of defects in the deeper material layers, not visible to the human eye, are critical for the evaluation and assessment of material damage (purely visual or function-limiting/endangering). 3 The shearography technology is an interferometric test method with which damage or defects can be identified on components under load. This measuring technique even enables detection of deformations of only a few micrometers in size. Already a relatively low...

A measurement consists of a reference image of the object in the unloaded state, followed by loading the component and taking a measuring image in the loaded state. The image processing software automatically subtracts the two images from each other to create the result image. Depending on the test parameter settings, the reference image can be taken either before or after applying the test load. The test load types which are typically selected are thermal and/or pressure/ vacuum loads. The optimum load type depends on the component structure and material and on the size, position and type...

5 typical delamination in top layer (artificially induced defect) stringer delamination typical characteristics of test part structure TYPICAL RESULT IMAGES DIGITAL IMAGE PROCESSING phase calculation and subtraction filtering and unwrapping video images (loaded/unloaded state) phase image result image delamination ondulations and wrinkles trace functionality

6 The ISISmobile 3010 and ISISmobile 3100 mobile shearography systems enable the fast and easy testing of various composite components, such as sandwich structures with honeycomb or foam core, GlareTM, aluminium composite and other compound materials. Developed as a complete system solution, ISISmobile 3010/3100 provides unique system features for non-destructive material testing. The system can be effortlessly operated by one person; it further offers an automatic program run routine and the software-guided creation of a test protocol. Equipped with a vacuum unit, the handy measuring head...

7 TECHNICAL DATA • 2 laser diode arrays • 2 heating lamps • shearography system with phase shifting • high-resolution CCD camera • field of view ISISmobile 3010: 360 x 270 mm, ISISmobile 3100: 220 x 185 mm • power supply via control unit • vacuum generation with pressurized air or vacuum pump • electrical specification ISISmobile 3010: 400 V, 3 phase, 16 A, 6 bar / 230V, 1 phase, 16 A, 6 bar ISISmobile 3100: 110 V - 230 V, 1 phase, optional 6 bar • signal lamp for „Laser ON“ • remote control for measurement / tablet PC • button for deactivation of suction cups • button for activation of...

8 As a new feature, the mobile ISISrobot shearography system now comes with a fully integrated robot interface for an automatic test procedure. This interface consistently continues our philosophy of incorporating base technologies into a user-friendly environment, thus allowing users to benefit from maximum system integration. The new system configuration effectively and precisely satisfies the practice-driven demand to test large-surface parts without the operator being forced into investing much work on documentation, while nevertheless ensuring the required traceability of the test....

9 The flexibility of the shearography technology makes it possible to install an identical measuring unit in both a stationary and a mobile system. Measuring head positioning can be extended to up to 5 axes, which allows the complete testing of the optically accessible component surfaces. The system software is controlled by a fully automatic test procedure in the standard mode and permits manual control in the expert mode. The software can be combined with component data from a CAD program, a database or manual positioning parameters. Since requirements are mostly very specific, the...

SOFTWARE ISISplus 10 Hardware and image processing are controlled by the ISISplus software developed by Steinbichler. The Windows-based program is easy to use and ensures system integrity. The available operating modes feature a standard and an expert mode. Providing full access to all relevant software tools, the expert mode allows setting of test parameters, creating new automatic programs, deleting programs, defining the test documentation and accessing the program library. In the customized standard mode, the existing automatic programs can be selected from a library. The expert mode...

11 TEST PROCEDURETEST PROCEDURESHEAROGRAPHY MEASUREMENTSHEAROGRAPHY MEASUREMENTRESULT DOCUMENTATION TEST PARTRESULT PARTSINGLE TEST RESULT PRESENTATIONSINGLE PRESENTATION2D CAD data2D datadatabasedatabase3D data3D dataOPTIONAL:OPTIONAL: MANUAL MODE MODEAUTOMATIC MODE AUTOMATIC *.tif*.jpg*.bmp*.ffw*.ffwSTORE*.xlsSTORE*.doc*.html*.xlsPRINTPRINT

Steinbichler Optotechnik GmbH • Georg-Wiesböck-Ring 12 • 83115 Neubeuern - Germany fon: +49-8035-8704-0 • fax: +49-8035-1010 • sales@steinbichler.de • www.steinbichler.de © Steinbichler Optotechnik GmbH 09_2009