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May 02, 2023

Answer: 

Introduction

Due to the increasing complication of systems in modern environment, there is a greater demand for monitoring and analysis of strains and stresses created in parts, as well as the ability to control from a distant location. For these kind of measures, several industry areas . The importance of strain gauges cannot be overstated. Devices with accurate measurements can determine the amount of strain generated in a variety of constructions, ranging from structural to biomechanical technology. Strain assessment can be used to determine the lifespan and threat of a specific structure. Strain is the deformation that occurs as a result of stress, (Cabaleiro, Riveiro, Arias and Caamaño, 2015). Connected electronic strain gauges are the most common and dependable means of monitoring strain. The strain gauge`s electrical resistance varies when the conducting grid deforms. The Wheatstone Bridges are used to translate changes in resistance into electrical impulses, i.e., in accordance with the defined voltage, as the strain gauge provides measurements in terms of resistance. However, because the voltage difference is so small, it must be amplified to a particular level in order for the controller to perceive it. A full bridge circuit is created by attaching a strain gauge to one of the Wheatstone bridge circuit`s four legs, which improves the micro strain values from each strain gauge as well as gives responsiveness that is two to four times higher than the Half Bridge as well as Quarter Bridge setups, respectively. The differential voltage between two output terminals is the output value as a result. Stress measurements & analyses on a Simply Supported beam were performed in this research; a setup was built and fabricated for the test, and samples were recorded; the acquired experimental data were verified with theoretical data as well as the NI-DAQ modules, (Tebedge, Alpsten and Tall, 2018).  

Part 1: Measurements With Strain Gauges VI

Developing a circuit to measure the output voltage of a quarter bridge configuration with a strain gauge using a schematic depiction.
 
The resistance levels selected for the Wheatstone bridge`s remaining 3 arms.

The rheostat arm of the bridge (R2 in the diagram) is normally set to the strain gauge resistance when no force is applied. The two ratio arms (R1 and R3) of the bridge are set to the same value. If no force is given to the strain gauge, the bridge will be symmetrically balanced and the voltmeter will show 0 volts, reflecting zero force on the strain gauge, (POPLE, 2016).

What should be considered before connecting the circuit to a Daq device?

We`ll use an Arduino to monitor strain and stress from a Wheatstone bridge, as well as the output voltage from a signal conditioning circuit. Arduino is an open-source tool for creating online technology and interacting items that can detect as well as function both manually as well as electrically or programmatically utilizing single-board embedded systems and microprocessor kits. A 16 MHz clock drives it. Additional circuits & devices like as sensors, switches, as well as displays are connected to the boards using a range of digital and analog input/output (I/O) pins. Serial communications interfaces, such as the Universal Serial Bus (USB), are also supported on the boards, which are used to load programs from computers, (?RSEL, 2021).

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