Review and proposition of new dynamic force calibration method

2013 ◽  
Author(s):  
Xie Weidong ◽  
Yin Hao ◽  
Shen Jisheng
Keyword(s):  
Calibration Method ◽  
Dynamic Force ◽  
Force Calibration

scholarly journals In-situ dynamic force calibration using impact hammers

ACTA IMEKO ◽  
2020 ◽  
Vol 9 (5) ◽  
pp. 118
Author(s):  
M. Kobusch ◽  
L. Klaus
Keyword(s):  
Transfer Functions ◽  
Force Measurement ◽  
Measurement Data ◽  
Calibration Method ◽  
Force Transducer ◽  
Experimental Investigations ◽  
Dynamic Force ◽  
In Situ Calibration ◽  
Force Calibration

This paper presents experimental investigations of in-situ dynamic force calibrations in which an impact hammer provides the dynamic reference force. Here, the force transducer to be calibrated remains in the original mechanical structure of the force measurement application to which calibration shock forces are applied in a suitable way. Numerous experiments with different force transducer set-ups and different impact hammer configurations were conducted to validate this in- situ calibration method. The paper describes the analysis of the measurement data and presents the force transfer functions obtained. Finally, these dynamic calibration results are discussed.

FORCE CALIBRATION OF NANO UNIVERSAL TESTING MACHINE USING MILLIGRAM WEIGHTS

2013 ◽  
Vol 24 ◽  
pp. 1360031
Author(s):  
CHUNG-LIN WU ◽  
CHING-FEN TUAN
Keyword(s):  
Force Measurement ◽  
Testing Machine ◽  
Calibration Method ◽  
Force Transducer ◽  
Force Measurements ◽  
Universal Testing Machine ◽  
Universal Testing ◽  
Small Force ◽  
Force Calibration ◽  
Force Range

This paper presents an approach for calibrating the force transducer on the nano universal testing machine using milligram weights. Previous research on force calibration of such a system focused on the range from 10 mN to 200 mN, ignoring forces below 10 mN. The main purpose of this study is to analyze and calculate the uncertainty of force measurements within the range from 0.2 mN to 10 mN. The ABA calibration method in accordance with OIML R111-1 is adopted to determine the uncertainty in force measurement. The results indicate that the maximum relative uncertainty of force measurement is 7.0 × 10−3 with a 95% confidence level. The investigation can be used as the basis for evaluating measurement uncertainty of the system in small force range.

Nano and Micro Mechanical Measurement of Interaction Forces Between Solid Surfaces

2006 ◽  
Vol 326-328 ◽  
pp. 1-4
Author(s):  
Kyung Suk Kim
Keyword(s):  
Scale Effects ◽  
Measurement Techniques ◽  
Calibration Method ◽  
Lateral Force ◽  
Solid Surfaces ◽  
Lateral Interaction ◽  
Force Measurements ◽  
Interaction Forces ◽  
Size Scale ◽  
Force Calibration

Two different types of experimental methods have beeen developed for measuring lateral interaction forces between two solid surfaces for nano- and micro-meter scale contacts. One is the type of direct measurement methods which typically utilize AFM instrumentations. In the direct lateral force measurements some size-scale effects are commonly observed due to the effects of adhesion and surface roughness. A recent development of a fine AFM lateral force calibration method, a diamagnetic lateral force calibrator, has made it possible to study such size-scale effects systematically. The other type is the field projection method which requires a high resolution measurement of a deformation field near the edge of a contact. For such measurements a comprehensive map of deformation measurement techniques is introduced in a domain of spatial and strain resolutions. This technique provides a way of assessing the non-uniform distribution of the surface interaction forces for nano and micro-meter scale contacts.

scholarly journals Research on the counter-force calibration method of tablet hardness tester

2021 ◽  
Vol 18 ◽  
pp. 100233
Author(s):  
Zhenyu Wang ◽  
Xiang Ren ◽  
Haiying Feng ◽  
Dejun Luo
Keyword(s):  
Calibration Method ◽  
Hardness Tester ◽  
Force Calibration ◽  
Tablet Hardness

scholarly journals Calibration of cyclic force with inertial force correction to a fatigue testing machine

ACTA IMEKO ◽  
2020 ◽  
Vol 9 (5) ◽  
pp. 124
Author(s):  
Feng Tian ◽  
Xiao Yin ◽  
Bo Li
Keyword(s):  
Test Piece ◽  
Fatigue Testing ◽  
Testing Machine ◽  
Inertial Force ◽  
Correction Method ◽  
Dynamic Force ◽  
Static Force ◽  
The Real ◽  
Force Calibration

The accuracy between a dynamic force and a static force applied on a specimen by a fatigue machine is usually not the same. By establishing physical vibration models of fatigue machines, it is concluded that the error of a cyclic force is mainly caused by the inertial force of the vibration mass between the machine sensor and the specimen. After the inertial force is exactly corrected, the force displayed on the machine would be consistent with the real force on the specimen. A standard dynamic force calibration sensor (DFCS) with an inertial force correction method has been used to do calibration of fatigue testing machines in this paper. Compared with the replica test-piece method, the two calibration results are close to each other.

scholarly journals Magnetic fields influence on sensors with electrical output under sinusoidal excitations

ACTA IMEKO ◽  
2016 ◽  
Vol 5 (1) ◽  
pp. 51 ◽  
Author(s):  
Nieves Medina ◽  
Jesús De Vicente ◽  
Jorge Robles
Keyword(s):  
Magnetic Fields ◽  
Primary Standard ◽  
Dynamic Force ◽  
Magnetic Effects ◽  
Force Transducers ◽  
Electrodynamic Shaker ◽  
Force Calibration ◽  
Electrical Output

This paper describes the magnetic effects studied at CEM in their realization of a primary standard for dynamic force calibration using sinusoidal excitations of force transducers, although they can also affect any sensor with an electrical output mounted on an electrodynamic shaker. In this study the electromagnetic behaviour for the interaction between sensor and shaker or a similar source of magnetic fields is explained and a solution to minimise this interaction is also included.

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