DVA-CENAM DVA-SEV 1

SIM AUV Report 2015-2017

Centro Nacional de Metrología, México

Vibrations, Acoustics and Ultrasound Area

INMETRO, Nov. 2017

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Acoustics, Ultrasound and Vibrations

Working Groups Group Staff

DGMF director DVA director

Salvador Echeverría-Villagómez, Ph. D. Andrés E. Pérez-Matzumoto, Ph. D.

Vibrations Guillermo Silva-Pineda, M. Sc. Lorenzo M. Muñiz-Mendoza, Mech. Eng. Arturo Ruiz Rueda, M. Sc. Rafael Martínez-Padilla, Mech. Eng. Aldo Adrian García González, M. Sc. Manuel Alejandro González Durán, M. Sc. Julio Heriberto Mata Salazar, M. Sc.

Acoustics Alfredo A. Elías-Juárez, Ph. D. Adolfo Esquivel-Delgado, M. Sc. Maricela Gamiño-Galindo, Sist. Eng. Osvaldo Llamas-Llamas, Mech. Eng. Juan Pablo Ayala Breña, Mechatronics Eng.

Ultrasound Ana L. López-Sánchez, Ph. D. Gilberto Loera-Medrano, Elect. Eng.

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AUV Staff

Cooperation with International Institutes:

PTB (Germany) Visit 2015

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DVA Vitality – New Measurement Techniques in Mexico

•  Acoustics Group facilities at the new Building for Special Laboratories (Edificio de Laboratorios Especiales, ELE) (ongoing).

•  Development of dynamometer to calibrate dynamic torque sensors (ongoing).

•  Research and Evaluation of the Effect of Noise Pollution in Mexico´s Housing (2015-2017) in collaboration with the National Autonomous University of Mexico.

•  Primary calibration of accelerometers using high intensity shock with a Hopkinson bar, from 5 km/s2 to 50 km/s2 (2016).

•  Design of calibration devices for mechanical couplers used in measuring bone vibrations (2015).

•  Design of an impedance tube for the measurement of acoustic properties of materials (2015).

•  Determination of hardened layers in steels using ultrasonic measuring techniques (2015).

•  System for mapping sound sources using sound intensity (2014-2015).

•  Sound power determination for home and commercial appliances, automotive components and communication systems (2013-2015)

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Primary Laboratories

Reference   Description  

CNM-PNF-1   Alternating Acceleration  CNM-PNF-16   Transient Acceleration in Impact and Shock  CNM-PNF-2   Primary Acoustic Pressure  CNM-PNF-7   Sonometry  CNM-PNF-14   Free field calibration system of measuring

hydrophones/projectors  

Free Field Primary Acoustic Pressure (under development)

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Peer Review in Vibrations

30th September to 2nd October 2015. Dr. Thomas Bruns, Dr. Michael Kobusch, from PTB (Germany). Assessment of the vibration and shock laboratories of CENAM in order to perform a peer review (part 5 of ISO 17025:2005).  

Alternate Acceleration National Standard

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Key Comparisons

Identification Description Progress Quantity

CCAUV.V-K4 Accelerometer shock calibration

Measurements in process

Voltage and charge sensitivity at nominal value

CCAUV.V-K3 Accelerometer calibration 0.1 Hz to 40 Hz

Approved for equivalence

Acceleration complex sensitivity

DVA participated in the following CCAUV key comparisons:

CCAUV.V-K3 Acceleration Complex Sensitivity. •  Amplitude sensitivity of CENAM was within the claimed uncertainties with respect

to the KCRV for all the frequency range. •  The phase shift sensitivity higher differences were above 0.2 Hz up to 40 Hz,

considering the reported uncertainties. •  From the KC results an error in the program to calculate the phase shift was

identified. A Data Adquisition Board NIDAQ 6110 is used to measure two channels from the laser interferometer and one channel for the accelerometer signal.

•  The correction of the error in the calculation program using LabView is under development.  

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Key Comparisons

CCAUV.V-K4: Accelerometer Shock Calibration. 2016-2018 CENAM Measurements: March-April 2017. KC included two accelerometers, one single ended and one back-to-back, and one charge amplifier. Only the shock sensitivity of each accelerometer is considered for the calculation of the Key Comparison Reference Value.  

b) Single ended accelerometer a) Back to back accelerometer

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SIM Collaboration

Proficiency test   Laboratory (country)   Date  Calibration of Acoustic calibrators   Laboratorio de calibración TECHNIK LTDA.,

Bogotá - Colombia  2017  

Calibration of accelerometers by comparison according to ISO 16063-21  

Universidad Pontifica Bolivariana, Bucaramanga - Colombia  

2016  

Calibration of Acoustic calibrators Calibration of Sound Level Meters  

Inteccon Colombia S.A.S., Medellín - Colombia  

2015  

Determination of the frequency response function according to ISO 7626-2 and ISO 7626-5  

Universidad Pontifica Bolivariana, Bucaramanga - Colombia  

2015  

Course / workshop   Aimed to   Date  Calibration of instruments for vibration measurements  

Astilleros y Maestranzas de la Armada, Talcahuano, Chile  

2017  

Calibration of instruments for acoustic measurements  

Innovare Calibración, S.A de C.V. (México-Colombia-Chile)  

2015  

Measurement uncertainty estimation according to GUM and Monte Carlo method.  

a) Metrology department of the Instituto de Salud Pública de Chile. Santiago, Chile (1 course) b) INM of Colombia and accredited laboratories. Bogotá, Colombia (2 courses)  

2015  

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SIM Collaboration

Maricela Gamiño Galindo, participated as CENAM’s representative at the Workshop ISO/IEC 17043 (Panamá, March, 2017)  

Participants at the Workshop ISO/IEC 17043

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Recent Projects: Vibrations

Development of test bench and an algorithm to perform high accuracy dynamic measurements of transmission error and backlash in a differential

for automotive industry.

Technology transfer of measurement system from

dynamic test bench of transmission error and

backlash.

A test bench and algorithm has been implemented to calculate the dynamic transmission error and backlash of an automotive differential, using a data acquisition board in a test bench instrumented with two high resolution encoders under laboratory conditions. Static measurements against dynamical have been compared to verify and validate the obtained results.

The technology transfer of the measurement system has been successfully implemented in six measurement stations at the industry.

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Recent Projects: Acoustics

Measuring sound power levels of high impedance sound source in small rooms (under development)

Normalized error of the sound power levels of a high

impedance sound source between ISO 3745 method and

ISO 3741 method for three different setup of measuring

reverberation time

The degree of diffuseness of the sound field in a small room was defined as a function of the normalized error of the sound power measurements by different methods. The sound power of a high impedance sound source was determined based on ISO 3745, ISO 9614-1, and ISO 3741 using rooms of different volume, and the reverberation time by different setups. The transition from non-diffuse to diffuse conditions of a small room was assessed by different criteria. And the sound field produced by the measurement setup for sound power measurements produced a sound field where it is valid the statistical theory one octave band below the Schroeder frequency of the small room.

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Recent Projects: Ultrasound

Determination of case hardness depth in steel axles using ultrasonic measuring techniques (under development)

Photograph of the immersion setup

This is an on-going non-destructive testing project aiming to quantify the depth of hardened layer in steel specimens after a stage of heat treatment by induction. Manufacturing companies routinely perform destructive testing in order to keep under control their corresponding heat treatment processes, which is time consuming. The interaction of high frequency ultrasound (25 MHz) in the interface between the heat-treated material and the core material, generates a backscatter signal that after applying signal processing can be used to measure the case hardness depth with a measuring error within 0.1 mm, compared with results obtained through metallography and micro-hardness methods.

results obtained in the sizing of the detected flaws

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DVA Publications

2017 (4)

1.  M. Kobusch, L. Klaus and L. Muñiz Mendoza. Investigation of impact hammer calibrations. IMEKO 23rd TC3, 13th TC5 and 4th TC22 International Conference. Helsinki, Finland. 30 May to 1 June, 2017.

2.  I.M. López Bautista, G. Silva Pineda, L. Nava Balanzar. Dynamic characterization of MEMS accelerometers embedded into IMU sensor. Automotive Testing Show & Conference Mexico. March, 2017.

3.  Aldo A. García G., J. Salvador Echeverria V. and Manuel A. González D. Dynamic measurement of transmission error and backlash in automotive differential. Automotive Testing Show & Conference Mexico. March, 2017.

4.  F. Arturo Machuca-Tzili, Felipe Orduña-Bustamante, Antonio Pérez-López, Santiago J. Pérez-Ruiz, and Andrés E. Pérez-Matzumoto. Modified acoustic transmission tube apparatus incorporating an active downstream termination. The Journal of the Acoustical Society of America. Feb., 2017.

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DVA Publications

2016 (8)

5.  J.S. Echeverría Villagómez and A.A. García González. Creación de una línea de productos para diseño y fabricación de equipo para pruebas funcionales de transmisiones automotrices. (Creating a product line for design and manufacture of equipment for functional testing of automotive transmissions). Simposio de Metrología. CENAM-México. Sept., 2016.  

6.  A.A. García González, G. Silva Pineda, M. Alvarado Roa, A. I. González García, L. Hernández León, A. Loquercio and R. A. Pacheco Ugalde. Estudio del fenómeno físico del rechinido en discos de frenos (Study of the physical phenomenon of squeaking brake discs). Simposio de Metrología. CENAM-México. (Poster) Sept., 2016.  

7.  G.M. Rivera, G. Silva-Pineda; Desarrollo de un interferómetro láser para calibrar acelerómetros en barra de Hopkinson. Development of a laser interferometer to calibrate accelerometers in a Hopkinson bar. Simposio de Metrología. CENAM-México. Sept., 2016.  

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DVA Publications

2016 cont.

8.  J.N. Razo Razo, A.E. Pérez Matzumoto and O. Llamas Llamas. Actualización de la norma NOM-081-SEMARNAT – Discusión de los límites máximos permisibles y método de medición (Updating the NOM-081-SEMARNAT standard - Discussion of the maximum permissible limits and measurement method). Simposio de Metrología. CENAM-México. Sept., 2016.  

9.  M. Gamiño Galindo, A.E. Pérez Matzumoto and S.J. Pérez Ruiz. Diseño de la Medición de Ruido en la Ciudad de Querétaro. (Design of noise measurements in the city of Queretaro). Simposio de Metrología. CENAM-México. Sept., 2016.  

10. A.A. Elías Juárez, A.L. López Sánchez, G. Loera Medrano, J.A. Antonio Salas Téllez, J.L. Cabrera Torres and R. Cárdenas. Mediciones ultrasónicas para cuantificar espesor de capa endurecida en aceros templados por inducción. (Ultrasonic measurement of hardening depth in induction hardened steel components). Simposio de Metrología. CENAM-México. Sept., 2016.  

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DVA Publications

2016 cont.

11.  T. F. Arroyo, A.L. López Sánchez, A.A. Elías Juárez and G. Loera Medrano. Sistema ultrasónico para inspección semi-automática de cordones de soldadura usando ultrasonido. (Ultrasonic system for semi-automated inspection of welding in plates). Simposio de Metrología. CENAM-México. Sept., 2016.  

12. F. Orduña Bustamante, A. Pérez López, F. A. Machuca Tzili, S. J. Pérez Ruiz and A. E. Pérez Matzumoto. Simplified Two-Load Transmission Tube Measurements using an Active Absorbing Termination. International Congress on Acoustics. Argentina. Sept., 2016.  

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Thank you!

South wall (detail). Diego Rivera, Detroit Industry murals. 1932-33