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© NMISA 2012 Status of Acoustics, Ultrasound and Vibration at the NMISA Ian Veldman 13 June 2012
© NMISA 2012 Recent and future developments Acoustics –Reciprocity calibration system in conformance with IEC 60194-2: 2009 LSP1 & LSP2 Magnitude and phase –Acquired a commercial reciprocity calibration system to be implemented during 2012 Vibration –Extended low frequency capability down to 0,4 Hz –Developing a system for measuring transverse sensitivity of accelerometers in compliance with ISO 16063-31 –Designed an air-bearing exciter table. Performance validation to commence later this year
© NMISA 2012 Recent and future developments Ultrasound –Finalising the appointment of an Underwater Acoustics/Ultrasound metrologist –Re-establish the NMISA underwater Acoustic National Standard –Initiate a project plan to establish Ultrasound Power measurement standards at the NMISA
© NMISA 2012 Development & Comparison Activities Acoustics –Participation in CCAUV.A-K5 software validation project –CCAUV.A-K5 –APMP.AUV.A-S1 –Reciprocity calibration of LSP1 & LSP2 microphones
© NMISA 2012 Development & Comparison Activities Vibration –CCAUV.V-K2 –AFRIMETS.AUV.V-S2 (Pilot laboratory) –APMP.AUV.V-S1 –AFRIMETS.AUV.V-S3 –Primary calibration of accelerometers < 1 Hz –Low frequency air-bearing exciter table –Transverse sensitivity calibration of accelerometers (ISO 16063- 31)
© NMISA 2010© NMISA 2012 AFRIMET Activities Provided training for KEBS metrologist in Acoustics and Vibration Assist in arranging inter-laboratory comparison, AFRIMETS.AUV.V-S3
© NMISA 2010© NMISA 2012
AFRIMETS The Intra-Africa Metrology System Système Intra-Africain de Metrologie TC AUV Meeting Feedback July 2011 Ian Veldman Chair: TC-AUV.
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Disclaimer: The findings and conclusions in this presentation are those of the author(s) and do not necessarily represent the views of the National Institute.
Physics 434 Module 3 – Created by (and thanks to) T. Burnett 1 Physics 434 Module 3 Acoustic excitation of a physical system.
Tables Learning Support x 2 = 0 1 x 2 = 2 2 x 2 = 4 3 x 2 = 6 4 x 2 = 8 5 x 2 = 10 6 x 2 = 12 7 x 2 = 14 8 x 2 = 16 9 x 2 = x 2 =
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