Consultative Committee for Acoustics, Vibration and Ultrasound CCAUV - - PowerPoint PPT Presentation

Consultative Committee for Acoustics, Vibration and Ultrasound ‐ CCAUV

• Dr. Takashi USUDA
• n behalf of
• Prof. Dr Joaquín Valdés

CCAUV President and CIPM member (UNSAM ‐ Argentina) 25th meeting of the CGPM

2

AUV in your daily life

Louis XIV

Ultrasound

Vibration Vibration How much?

3

Main Areas

Consultative Committee for AUV / Prof. Dr Joaquín VALDES

Consultative Committee for Acoustics…………………… Ultrasound……………….. Vibration & shock….. Underwater acoustics .

Comparison of pressure sensitivity using standard microphones [2 Hz – 40 kHz]: hearing, machinery and environmental noise Comparison of ultrasonic power using hydrophones [1 MHz – 20 MHz]: diagnostics and therapy, cleaning, sterilization and food industry Comparison of acceleration using accelerometers [0.1 Hz – 10 kHz]: car and aeronautic industry, health and safety issues Comparison of ultrasonic power using hydrophones [250 Hz – 500 kHz]: marine‐ imaging, communication, mapping, climate studies

Established in 1998

Pa W m/s2 W

4

Areas of priority and potential

Consultative Committee for AUV / Prof. Dr Joaquín VALDES

Acoustics

Keep pace with clinical practices, objective audiology, synergy with industry for low‐cost robust sensor systems

Ultrasound

Support High‐Intensity Ultrasound Therapy for clinical practice, alternative cancer therapy and drug administration, validated methods for acoustic material properties

Vibration & shock

Machine safety, inertia navigation and dynamic measurements, MEMS‐accelerometers and gyros

Underwater acoustics Noise pollution of marine

environment, support off‐shore applications at deeper water

5

Interdisciplinary issues

• Acoustic thermometry

to determine the Boltzmann constant via the speed of sound

• Materials metrology [1], Metrology and Testing [1]

To use for materials metrology and material properties (e.g. elastographic imaging techniques)

• Vibration and seismology

Long term observation of plate tectonics, earthquake detection and alarm system

• Ultrasound and chemistry, biochemistry

To characterize liquid composition or evaluate protein solutions, molecular imaging, drug absorption

• Ultrasound and ionizing radiation

Concepts of radiation dosimetry in ultrasound environment

[1] Metrologia 2010 47 Special issue: Materials metrology, Ed. S. Bennett and J. Valdés

Consultative Committee for AUV / Prof. Dr Joaquín VALDES

6

Stakeholder involvement

Consultative Committee for AUV / Prof. Dr Joaquín VALDES

• NMIs and DIs, themselves precursor to other stakeholders

e.g. regulators for pharmaceutical, occupational, traffic, etc.

• The International Electrotechnical Commission (IEC)
• TC29: Electroacoustics
• TC87: Ultrasonics
• The International Organization for Standardization (ISO)
• TC108: Mechanical vibration, shock and condition

monitoring

• TC43/SC3: Underwater acoustics

7

• MEMBERSHIP: KEBS (Kenya) obtained observer status
• CCAUV strategy revised in 2012 following the BIPM time schedule
• Consolidated planning of needed key comparisons
• RMO TC Chairs invited to the CCAUV 2012 and 2013, and to selected WG

meetings

• 2 CCAUV comparison completed:
• Ultrasonic power (pilot PTB)
• Vibration acceleration (pilot PTB)
• Launched 4 CCAUV comparisons:
• Acoustics completed (pilot NPL) / standard microphone calibration
• Ultrasound in progress (pilot NPL) / hydrophone calibration
• Vibration completed (pilot PTB) / angular acceleration (supplementary comparison)
• Vibration in progress (pilot NIM) / low frequency – acceleration complex sensitivity

Achievements 2011 ‐ 2014

Consultative Committee for AUV / Prof. Dr Joaquín VALDES

8

Future Strategy

Consultative Committee for AUV / Prof. Dr Joaquín VALDES

• CCAUV strategy to be revised by 2017
• An analysis of impact cases will be carried out before the next

meeting.

• Feedback from the CCAUV meeting 2013:
• The CCAUV strategic document provides a good basis for

planning on a local scale and for the search for funding;

• Review of the CIPM‐MRA from the CCAUV perspective
• Close contact with industries, regulators

Thank you

• Dr. Susanne PICARD

Executive Secretary of the CCAUV 2010‐

• Dr. Penelope Allisy‐Roberts

Executive Secretary of the CCAUV 1998‐2010

• Prof. Dr Joaquín Valdés

CCAUV President 2000‐2014

Thank you