For size reasons, adapted sensors, able to measure intrinsic mechanical properties of fabrics, have not been developed yet. The study aims at developing a sensor that can be inserted within a specific textile, a complex fabric used as seat-cover fabrics, and consisting of an assembly of three layers. Piezoelectric polymer sensors containing PVDF (polyvinylidene fluoride) were chosen. A total of 20 complex were studied. A characterisation in compression was achieved, using the Kawabata evaluation system. The best-adapted measurement method using a PVDF sensor has been required. The method consists in analyzing the response under compressive stress of a PVDF disc using the resonant frequency of the material. A constraint series is applied to the fabric in the sensor area; the maximal phase at the sensor's resonant frequency is taken up for each one. Phase variation is linear and differs according to the studied complex. A correlation study between Kawabata compression parameters and slopes did not show any relationship between slope values and compression properties when the surface fabrics of complex are compared, but a classification in families is possible when different foams are considered. Further studies should demonstrate whether these smart textiles could find applications in the automotive field, to measure accurately the mass of a passenger. The influence of the external parameters (vibrations, temperature variations) has to be checked, knowing that the sensor is not depending on moisture. To complete the study, the sensor has to be tested in a real situation, that is inserted in a car-seat, in contact with a human body. This study promises development of a sensor that can be inserted into a specific textile, a complex fabric used as a seat-cover, consisting of an assembly of three layers.


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    Titel :

    A smart sensor for compression measurement in automotive textiles


    Weitere Titelangaben:

    Ein intelligenter Sensor im Autopolsterstoffen - die Herausforderung der Druckfestigkeit und der piezoelektrische Polymer-Sensor


    Beteiligte:


    Erscheinungsdatum :

    2007


    Format / Umfang :

    11 Seiten, 7 Bilder, 4 Tabellen, 4 Quellen




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




    A smart sensor for induced stresses measurement in automotive textiles

    Drean, Emilie / Schacher, Laurence / Bauer, Francois et al. | Tema Archiv | 2006


    Automotive textiles

    Ravnitzky, Michael | TIBKAT | 1995


    Automotive textiles

    Dharmesh Parate | Tema Archiv | 1999


    Automotive textiles

    Mukhopadhyay, S.K. / Partridge, J.F. | Tema Archiv | 1999


    UNCONVENTIONAL AUTOMOTIVE TEXTILES

    Patwardhan, S. / Kulkarni, P. R. / SASMIRA (The Synthetic & Art Silk Mills Research Association) | British Library Conference Proceedings | 2000