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Mechanics and Acoustics

Division 1

Weight, force, velocity, loudness -€“ the mechanical and acoustic quantities are cared for by Division 1. Apart from basic research, testing within the scope of legal metrology is a main task.

Head of Division

Head of Division
Dr.-Ing. Prof. h. c. Frank Härtig
Phone: +49 531 592-1010
Email: frank.haertig(at)ptb.de

Tasks

The Division carries out basic research in the field of mechanical and acoustical measurands. On the basis of the Units and Time Act, standards and standard measuring devices are developed with the aid of which the measurement scales for all relevant mechanical and acoustical measurands such as mass, force, torque, acceleration, flowrate of gases and liquids, sound and ultrasound pressure can be realized with maximum accuracy and disseminated, predominantly to DAkkS laboratories. The tasks of the Division also comprise type examinations and certifications of measuring instruments on the basis of national regulations - such as the Verification Act and the Verification Ordinance - of European Measuring Instruments Directives as well as international recommendations of the OIML. In addition, employees of the Division provide advice in all matters of relevant metrology, assess DAkkS and other calibration and test laboratories and cooperate in the respective national and international committees.

News

Sound level meters serve the purpose of measuring sound levels and, thereby, in particular, to measure and check the observance of legally prescribed maximum or reference values (for example, in accordance with the "Technical Instructions on Noise Abatement" ["TA Lärm"]). Sound level meters can be found in private life (e.g. in home building), in environmental protection, and at work (in the form...

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A measuring system for airborne ultrasound is being developed within the scope of a technology transfer program. This system is specially dedicated to the practical application of measuring noise for occupational health and safety purposes. It will allow the determination and assessment of risks represented by widespread ultrasonic machines which can cause very high sound pressure levels.

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Gegenüber klassischen Kraft- und Drehmomentsensoren, welche nur Kräfte und Momente in einer fest vorgegebenen Richtung messen, sind Mehrkomponentensensoren deutlich flexibler einsetzbar. Dies führt jedoch zu erheblichem Aufwand bei der Kalibrierung solcher Sensoren, welcher sich in der erreichbaren Messunsicherheit widerspiegelt. Im Vergleich zur uniaxialen Kalibrierung liegt diese Unsicherheit...

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