A Strain Gauge Based Torque Transducer (Sensor) …

1 A Strain Gauge for Measuring 1 Faculty of Science, University of Sirte2 Faculty Abstract- Torque measurement is paramount in engine and transmission testing, turbine testing, pump testing and testing of gear trains and power measurement within propulsion systems. Monitoring Torque can be critical to the performance of axles, drive trains, gear drives, and electric and hydraulic motors. Other in-plant applications include gas and steam turbines. Really, Torque is an important factor in anything that rotates or spins on a shaft, spindle or axle.

2 In this research, the shaft wfor the application of a V shaped Strain Gauge ; Torque on a rotating shaft. The implementation of the Transducer will be executed. This paper also discussestransducer with Spider8 measurement electronics, diagram of the measuring chain, main points of the measuring software and the measurement accuracy. Ttested with simulated loads. The structure possible for measuring Torque with Strain gauges on it. This saves wear on the drive system and increases product quality. I. INTRODUCTIONA lthough Torque is unquestionably an important mechanical quantity in the construction of machines; its significance is not confined to that area alone.

3 The precise measurement of Torque , particularly in rotating components, places heavy demands on manufacturers and users of test benches. The situation is further complicated by the trend towards improvmechanical performance of modern engines by increasing the rotational speed; coupled with a desire for greater accuracy in such areas as the measurement of efficiency [2].There is no denying that signals play a major role in our life. A signal can be a function of time, distance, position, temperature, pressure, Torque , etc., and it represents some variables of interest associated with a system.

4 For examplean electrical system the associated signals are electric cuand voltage. In a mechanical system, the associated signals may be force, speed, Torque , etc [1].[4]. It isthat the most important quantity of a rotating machine is the acting mechanical power. There are many methods to measure this. By definition, the most straightforwardby measuring both the Torque directly on the rotating shaft and the rotational speed. There are many widely used measuring methods and more or less standardized instruments for measuring rotational speed; howevermeasurement device is specific for each application, sincemust be built onto the machine s structure.

5 Based Torque Transducer ( sensor ) Measuring Dynamical Load Hilal Muftah1 and S. M. Haris2 Faculty of Science, University of Sirte, Sirte, Libya aculty of Engineering & Built Environment Universiti Kebangsaan Malaysia 43600 UKM Bangi, Malaysia Torque measurement is paramount in engine and transmission testing, turbine testing, pump testing and testing of gear trains and power measurement within propulsion systems. Monitoring Torque can be critical to the performance of axles, drives, and electric and hydraulic motors.

6 Other plant applications include gas and steam turbines. Really, Torque is an important factor in anything that rotates or spins on the shaft will be adapted Strain Gauge ; to measure the implementation of the Transducer is paper also discusses calibration of the Transducer with Spider8 measurement electronics, the block the measuring chain, main points of the measuring The Transducer is then of a grinder makes it possible for measuring Torque with Strain gauges on it. This saves product quality. NTRODUCTION ough Torque is unquestionably an important mechanical ; its significance is not confined to that area alone.

7 The precise measurement of Torque , particularly in rotating components, places heavy demands on benches. The situation is further complicated by the trend towards improving the dern engines by increasing the with a desire for greater accuracy in such areas as the measurement of efficiency [2]. ignals play a major role in our life. can be a function of time, distance, position, ., and it represents some of interest associated with a system. For examples, in an electrical system the associated signals are electric current echanical system, the associated signals It is undoubtedly true rotating machine is the acting mechanical power.

8 There are many methods to measure straightforward method would be the Torque directly on the rotating shaft and the rotational speed. There are many widely used measuring methods and more or less standardized instruments for however for Torque , the device is specific for each application, since it nto the machine s structure. For many years metallic resistance Strain gauges have been used as principal sensors for measuring Torque on a shaft. Therefore, Gauge Torque Transducer is capa[3].[5]. Torque is defined as a measure object that causes it to rotate.

9 About an axis, which is call Distance (r) from the pivot point to the point where the force acts is called the moment arm. Note that a vector, and points from the axis of rotation to the point where the force acts, as shown in [1] More generally, the torqu Position (r) in some reference frame) can be defined as the cross product: Where particle's position (r)fulcrum, and Force (F) is the Magnitude ( ) of the Torque is given by Where Distance (r) is the distanceto the particle, Force (F) applied, and Angle ( ) is the angle betweenforce vectors [16].

10 [17].[18]. II. MATERIALS AND A. Strain Measurement CStrain gauges change resistance in response to the surface strains that they sense. The relationship between Strain and Torque Transducer ( sensor ) .Rotation metallic resistance Strain gauges have been used as principal sensors for measuring Torque on a shaft. Therefore, the Strain e Torque Transducer is capable to measure dynamical loads measure of the force acting on an to rotate. Force (F) rotates the object called the Pivot Point (O) . The from the pivot point to the point where the force acts is called the moment arm.