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Characterization of the temperature behavior of a piezoresistive accelerometer

  • Piezoresistive accelerometers use a strain-sensing element, generally made of semiconductor material, e.g., silicon to convert the mechanical motion into an electrical signal. This element is usually designed in form of a cantilever beam loaded with a mass. Acceleration causes bending of the beam, which produces a change of electrical resistance proportional to the applied acceleration. Main advantages of piezoresistive accelerometers in comparison to other types, e.g., piezoelectric and capacitive, is their robust and highly dynamic behavior, which qualifies them for application in high impact shock applications. Mechanical damping is typically implemented with silicon oil in a way that the output signal is undistorted over a wide frequency range. These characteristics principally qualify them for the application in drop tests carried out at BAM, for which they are calibrated over the frequency range from 1 to 4 kHz. However, using silicon oil for damping, has the drawback ofPiezoresistive accelerometers use a strain-sensing element, generally made of semiconductor material, e.g., silicon to convert the mechanical motion into an electrical signal. This element is usually designed in form of a cantilever beam loaded with a mass. Acceleration causes bending of the beam, which produces a change of electrical resistance proportional to the applied acceleration. Main advantages of piezoresistive accelerometers in comparison to other types, e.g., piezoelectric and capacitive, is their robust and highly dynamic behavior, which qualifies them for application in high impact shock applications. Mechanical damping is typically implemented with silicon oil in a way that the output signal is undistorted over a wide frequency range. These characteristics principally qualify them for the application in drop tests carried out at BAM, for which they are calibrated over the frequency range from 1 to 4 kHz. However, using silicon oil for damping, has the drawback of temperature dependent change of its viscosity, leading to temperature dependent deviation of the accelerometer’s sensitivity. This study presents experimental results of the temperature behavior of a piezoresistive accelerometer with a dynamic range up to ±5000 g. This type of accelerometer is applied for drop tests which are partially performed at temperatures of -40 or +100 °C.zeige mehrzeige weniger

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Metadaten
Autoren/innen:Matthias Bartholmai, Klaus-Dieter Werner, Sergej Johann, Werner Daum
Persönliche Herausgeber/innen:F. Cosmi
Dokumenttyp:Beitrag zu einem Tagungsband
Veröffentlichungsform:Graue Literatur
Sprache:Englisch
Titel des übergeordneten Werkes (Englisch):34rd Danubia - Adria Symposium on Advances in Experimental Mechanics - Book of proceedings
Jahr der Erstveröffentlichung:2017
Organisationseinheit der BAM:8 Zerstörungsfreie Prüfung
8 Zerstörungsfreie Prüfung / 8.1 Sensorik, mess- und prüftechnische Verfahren
Herausgeber (Institution):University of Trieste, Italy
Verlagsort:Trieste
Erste Seite:93
Letzte Seite:95
DDC-Klassifikation:Naturwissenschaften und Mathematik / Chemie / Analytische Chemie
Freie Schlagwörter:Accelerometer; Drop test; Temperature behavior
Themenfelder/Aktivitätsfelder der BAM:Analytical Sciences
Veranstaltung:34th Danubia-Adria Symposium on Advances in Experimental Mechanics
Veranstaltungsort:Trieste, Italy
Beginndatum der Veranstaltung:19.09.2017
Enddatum der Veranstaltung:22.09.2017
URL:https://www.openstarts.units.it/handle/10077/14921
ISBN:978-88-8303-863-1
Verfügbarkeit des Volltexts:Volltext-PDF im Netzwerk der BAM verfügbar ("Closed Access")
Datum der Freischaltung:25.09.2017
Referierte Publikation:Nein