Performance Analysis of Strain Gauge with Different Techniques
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Running head: PERFORMANCE ANALYSIS OF A STRAIN GAUGE WITH DIFFERENT TECHNIQUES 1 Performance Analysis of Strain Gauge with Different TechniquesName of the studentName of the universityAuthor Note:May 20 2018
Running head: PERFORMANCE ANALYSIS OF A STRAIN GAUGE WITH DIFFERENT TECHNIQUES 2i.Aim A strain gauge is a sensor that works in a way that it senses variations in electrical resistance as it experiences deformation in order to monitor a system ‘s pressure, strain, stress, shape and to measure strain. The strain gauge performance can be analyzed using various techniques. The aim of analyzing the performance of a strain gauge is to ensure its effectiveness since the analysis results determine whether it needs adjustments or not. The techniques use for strain gauge performance analysis range from the Automatic Fluid Dispensing System which is widely used for strain gauge evaluation (Varghese et al., 2007) to the performance evaluation based on the load cell and finally using the Effect of Stress impedance (Withers, Watanabe, 2013). All these techniques have different effectiveness levels and can be applied to determine the efficiency of a strain gauge in order to ensure accuracy in measurement. other major aims:To analyze the performance of a strain gauge using different methodsTo determine the accuracy of the methods used to analyze the performance of the strain gaugeTo give recommendations on the improvements to be implemented on the methods used to measure the performance of the strain gauge.ii. Background Strain gauge can be defined as the specific device that is being utilized for the purpose of measuring strain over a particular object. The most widespread kind of this strain gauge comprises of the insulating flexible backing that eventually supports any pattern of metal foil. This particular kind of strain gauge is subsequently attached to an entity by a proper connecting link like cyanoacrylate (Sloan et al., 2013). Since, the object is not formed properly, the foil becomes deformed and thus causing a proper alterationwithin the resistance in electrical field. The change of this resistance is subsequently measured with the help of a Wheatstone bridge and this change in resistance is solely related to the typical strain with the help of a fixed quantity, known as the gauge factor (Ando, Bruno and Salvatore Baglio, 2013). This type of strain gauge takes up various benefits of the physical properties of any electrical conductance and even its dependence over the geometry of the conductor (Yang, Shixuan and Nanshu Lu, 2013). When the electrical conductor is being stretched in the elasticity limit like not breaking or getting permanently deformed, it becomes longer as well as narrower and the changes or alterations increment the electrical resistance from one end to other. From all the calculated resistance in electrical on strain gauge, there is an inferred amount of induced stress. The strain performance can be made better by not increasing the sensitivity. The performance of the strain gauge could be easily analyzed by the help of various techniques. The most significant and popular technique for evaluating the performance of a strain gauge is the Automatic Fluid Dispensing System (Cai et al., 2013). This is utilized in various organizations for the purpose of evaluation of the strain gauge performance. The second important technique in this case is
Running head: PERFORMANCE ANALYSIS OF A STRAIN GAUGE WITH DIFFERENT TECHNIQUES 3the performance evaluation based on the load cell. The third technique is by determining the performance of strain gauge on the basis of the effect of stress impedance. According to Cruise a strain gauge is a sensor operating with the method that its resistance changes with the force applied to it. In its operation it translates tension, weight and pressure applied on it into an electric resistance change which is measured (Cruise et al., 2008). Sloan states that the strain gauge load cell is the most common in the industry. They are advantageous for their qualities such as good resonance values, stiffness and a long-life cycle. They work with the principle of deformation where when a material is put on them there is a strain that causes deformation which in turn alters its electrical resistance.1Varghese, Tomy, and Jonathan Ophir. "A theoretical framework for performance characterization of elastography: The strain filter." IEEE transactions on ultrasonics, ferroelectrics, and frequency control 44, no. 1 (2007): 164-172.2Watanabe, Fumihiko, Ichiyo Uno, Yoshiaki Hata, Gerhard Neuendorff, and Axel Kirsch. "Analysis of stress distribution in a screw-retained implant prosthesis." International Journal of Oral & Maxillofacial Implants 15, no. 2 (2009).3Withers, Philip J., and H. K. D. H. Bhadeshia. "Residual stress. Part 1–measurement techniques." Materials science and Technology 17, no. 4 (2007): 355-365.4Gardiner, John C., Jeffrey A. Weiss, and Thomas D. Rosenberg. "Strain in the human medial collateral ligament during valgus loading of the knee." Clinical Orthopaedics and Related Research® 391 (2007): 266-274.iii. Significance This study seeks to scrutinize the methods used to measure the performance of the strain gauge. Experiments will be performed to determine the most effective method after which recommendations will be made. Strain gauges are applied in various fields and their efficiency plays a significant role in ensuring the success of the projects they are used in (Siebert et al., 2007). Industries require the strain gauge in monitoring a system ‘s pressure, stress and strain. Over the years various methods have been applied in the analysis of the strain gauge performance but most of these methods have proven to be ineffective. This study seeks to apply three of the most effective methods which are, Automatic Fluid Dispensing System in which the automatic fluid dispensing system acts as an alternative to the printing using conductive inks because of ink incompatibility and low flexibility, Performance evaluation based on the load cell and Using the basis of the effect of stress impedance. iv. Innovations Without efficiency a strain gauge will not serve its purpose, this project seeks to ensure the efficiency of strain gauges using the methods of Automatic Fluid Dispensing System, the
Running head: PERFORMANCE ANALYSIS OF A STRAIN GAUGE WITH DIFFERENT TECHNIQUES 4performance evaluation based on the load cell and using the Effect of Stress impedance (Hild et al.,2009). All these methods will be evaluated in terms of their effectiveness in analyzing the strain gauge performance and adjustments will be made where necessary to ensure maximum accuracy. This project is innovative since it seeks to employ alternative methods to ensure the strain gauge accuracy. Many industries require the use of the strain gauge in order to monitor a system ‘s pressure, strain, stress, shape and to measure strain thus with these measurements assuring of efficiency in strain gauges they will benefit significantly.v. Approach and methodology a. Experimental design The experiment will be designed in a way that three methods used in evaluating the performance of the strain gauge will be evaluated to determine their accuracy and recommendations made on how to improve these methods to ensure that they are totally effective(Soares et al.,2008). The strain gauge is the device, which eventually varies the electrical resistance in proper proportion to the strain. This could result from various internal or external influences. The strain gauge factor GF can be demonstrated as:Where, is the resistance change that is caused by the strain and RG is the resistance on the un-deformed gauge. is the strain. The performance of the strain gauge is evaluated by various different techniquesThe methods that will be used to analyze the performance of the strain gauge are as follows:Automatic Fluid Dispensing System. In this case the automatic fluid dispensing system acts as a substitute to the printing using conductive inks this is so because of low flexibility and ink incompatibly. The strain gauge needsto meet standards such as rigorous and flexible to handle typical stresses resulting from the motion of the human body. The existing conventional strain gauges do not have these characteristics thus must be gauged and replaced by digital components fabricated by the use of printing technologies with the help of conductive ink.
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