The paper describes a new torque standard machine at NIM. The new reference torque standard machine is designed to calibrate the reference torque wrench and torque transducer. The relative expanded uncertainty of this torque standard from 10Nm to 5000Nm is better than 5×10-4(k=2). The calibration experiment of three kinds of reference torque wrenches by the new reference torque standard machine is described in the paper.
Traditional we use the standard accelerometer to calibrate the dynamic force. The standard accelerometer was
calibrated by vibration standard machine. However, the calibration condition is not as the use condition. So we need to
develop a dynamic force calibration method, which was the same condition as used. This paper describes a new method
of dynamic force calibration. Now we measure the acceleration by a laser Interferometer. Traceability for force is
realized via the measurement of acceleration with laser-Doppler-interferometers and the determination of the dropping
masses. This paper introduces the structure and the working principle of the equipment, performance parameters and the
uncertainty evaluation. This paper also compares the data between the accelerometer and laser-Doppler-interferometer.
Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks.
You are receiving this notice because your organization may not have SPIE eBooks access.*
*Shibboleth/Open Athens users─please
sign in
to access your institution's subscriptions.
To obtain this item, you may purchase the complete book in print or electronic format on
SPIE.org.
INSTITUTIONAL Select your institution to access the SPIE Digital Library.
PERSONAL Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.