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2006 -

 

Past projects since year 2006

Development of Surface Treatment Methods

On assignment of the Finnish Air Force the laboratory participates in the development of surface treatment methods for metal bonding together with other F-18 Hornet users (CREDP cooperation). Silane and Sol-Gel methods are studied to get more reliable and easy-to-use surface treatment methods for adhesive bonding of aluminium (plated and non-plated), steel and titanium parts.(Surface preparation results)

Carbon Fibre Heater Blanket

In repairs with composite materials resins and adhesives are cured at elevated temperature. The objective of the project is to develop a novel carbon fibre (CF) blanket for heating. The tested prototype blanket provided more even temperature distribution than traditional metal wire based heater blankets. (Carbon blanket Phase1 Report) The second CF blanket is more flexible and it has an optimised temperature distribution. It can also be used inside the vacuum bag during the curing. Further, a segmented CF blankets are developed. With it the supplied heat energy may vary within the blanket area and more energy can be guided to areas of heat sinks.

Measurement of Moisture Content

Composites parts must be dry when repaired. The objective of the project is to develop moisture indicator techniques by replacing currently used colour indication granules with the use of an electronics moisture transducer. With accurate measurements unsuccessful repairs on wet composite parts can be avoided. Dewpoint Report Phase1, Abstract and Dewpoint Report Phase 2, Abstract
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Study on Carbon Fibre Tube Inserts, Part1 and 2,  2003 – 2004 and 2005 - 2007

TKK/KRT and Patria Advanced Solutions – Space participated the ESA funded DLR lead project where the performance of a novel carbon fibre tube insert was verified. The insert was originally used in the Rosetta Lander. The study included an extensive test program and analytical and numeric analyses of its performance. The results were included in a coming ECSS standard, which replaces the ESA Insert Design Handbook. TKK/KRT performed half of the tests and Patria performed the analyses.(Abstract)
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Adaptive Structures 2002 – 2007

The project belongs to the Tekes funded national technology program MASINA. It concentrates in adaptive structures in machine construction applications. Sensor, actuator and control features are studied with defined application areas. The project consists of three subprojects. TKK/KRT is responsible for the Active Shell subproject, where shape control of shell surfaces is studied. Shape memory alloys (SMA) are used as actuators and optical strain gauges together with traditional resistance based strain gauges are used as sensors. The control system has been developed by University of Oulu. (VTT Adaptive Structures website)
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