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Status of Acoustics, Ultrasound and Vibration at the NMISA

Status of Acoustics, Ultrasound and Vibration at the NMISA. Ian Veldman 13 June 2012. Recent and future developments. Acoustics Reciprocity calibration system in conformance with IEC 60194-2: 2009 LSP1 & LSP2 Magnitude and phase

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Status of Acoustics, Ultrasound and Vibration at the NMISA

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  1. Status of Acoustics, Ultrasound and Vibration at the NMISA Ian Veldman 13 June 2012

  2. 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

  3. 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

  4. 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

  5. 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)

  6. AFRIMET Activities • Provided training for KEBS metrologist in Acoustics and Vibration • Assist in arranging inter-laboratory comparison, AFRIMETS.AUV.V-S3

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