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Content available remote A review of flexible printed sensors for automotive infotainment systems
Srinivasan K. P., Muthuramalingam T., Elsheikh Ammar H.
Archives of Civil and Mechanical Engineering
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2023
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Vol. 23, no. 1
art. no. e67, 2023
EN
Automobiles today are propelled by a variety of technologies that can be divided into three categories: safety, infotainment, and powertrain. The automobile industry is currently placing a high value on vehicle electronics and ergonomics in order to meet the needs of customers and to prepare for future applications. Flexible printed sensors are becoming increasingly popular in the automotive industry, owing to their high production rates, flexibility, and ability to accommodate complex geometries. Since the capacitive flexible printed sensors require many improvements to improve the performance measures in all aspects of the process. It was discovered that there were only a few research works accessible for the design and fabrication of suitable flexible sensors for automotive information and entertainment systems. Several researchers concluded that just a few studies had been conducted on the application of optimization algorithms in the design and fabrication of flexible printed capacitive sensors for the IVI bezel. Research attention has only been focused on investigating the impact of electrode parameters and sensor pattern on the performance of sensors in a limited number of studies.
2
Content available remote Application of laser power diode on leather cutting and optimization for better environmental quality measures
Vasanth S., Muthuramalingam T.
Archives of Civil and Mechanical Engineering
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2021
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Vol. 21, no. 2
228--235
EN
Since the leather materials are used in various industries such as shoes, fashion, furniture and automotive industries, it is essential to introduce laser technology on cutting leathers with intricate geometries under better environmental conditions. In this investigation, an effort was made to analyze the effects of laser power diode on environmental measures such as carbonization, striations and dross formation in leather cutting. It was attempted to compute the optimal factors using TGRA methodology. It was inferred that laser power diode cutting process can eliminate the striations and dross formation on leather cutting due to elimination of mechanical impact energy. Laser power diode can reduce the carbonization effect on leather cutting owing to the lower and concentrated energy. The optimal process parameters combination of laser power diode based leather cutting process was found with tolerance of 4.6%. Standoff-distance highly influences on determining the lower carbonization region and kerf width in laser power diode based leather cutting process.
3
Content available remote Effect of process parameters on mechanical properties of hollow glass microsphere reinforced magnesium alloy syntactic foams under vacuum die casting
Anbuchezhiyan G., Muthuramalingam T., Mohan B.
Archives of Civil and Mechanical Engineering
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2018
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Vol. 18, no. 4
1645--1650
EN
In the present study, an endeavour has been made to investigate the mechanical properties of hollow glass microspheres reinforced die cast magnesium alloy under vacuum die casting process. The particle size, mass fraction, stirring speed has been considered as input process parameters to analyze the mechanical properties such as hardness, compressive strength, porosity and density of the syntactic foams. Taguchi-Grey relational based multi response optimization has been utilized to compute the optimal process parameters and find the influence of those parameters on performance measures of casting process. From the experimental investigation, the optimal process parameters have been found as particle size (45 microns), mass fraction (20%) and stirring speed (600 rpm) among the chosen process parameters. The highest max–min indicates the particle size has higher influence on determining the mechanical properties of the syntactic foam owing to its importance on determining the porosity. It has been also observed that the density of syntactic foam decreases with increases in the mass percentage of hollow glass microspheres.
4
Content available remote A review on influence of electrical process parameters in EDM process
Muthuramalingam T., Mohan B.
Archives of Civil and Mechanical Engineering
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2015
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Vol. 15, no. 1
87--94
EN
Since the thermal energy produced in electrical discharge machining process is due to the applied electrical energy, it is very important to enhance the electrical process parameters to improve the process efficiency. The present study discusses about having an overview of the EDM process, modeling of process parameters, and influence of process parameters such as input electrical variables, pulse shape, and discharge energy on performance measures such as material removal rate, surface roughness and electrode wear rate. This study also discusses about controlling the electrical process parameters, and empirical relationships between process parameters and optimization of process parameters in EDM process. From the review results, it has been observed that the efficacy of the machining process can be improved by electrical process parameters, and only less attention has been given for enhancing such parameters.
5
Content available remote Performance analysis of iso current pulse generator on machining characteristics in EDM process
Muthuramalingam T., Mohan B.
Archives of Civil and Mechanical Engineering
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2014
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Vol. 14, no. 3
383--390
EN
Extremely hard materials can be easily machined by Electrical Discharge Machining process due to its thermal erosion nature. In this process, the amount of material removed is directly proportional to the discharge current. Due to the stochastic nature of the thermal erosion process, the discharge current is varied for every applied electrical pulse. It results in different levels of material removal over the material surface during machining process. The volume of the crater is determined by the discharging energy. The variation in the discharging energy produces high surface roughness, which is influenced by discharge current. A constant duration discharge current is needed throughout the process to produce better surface quality. In this research, an iso duration current pulse generator has been proposed to achieve good surface finish. An experimental performance evaluation has been conducted with conventional transistor pulse train generator and modified iso current pulse generator by Taguchi L27 orthogonal array design. The machining characteristics have been evaluated for both the pulse generators. It is found the that modified iso duration current pulse generator has produced better surface quality with higher material removal rate than the conventional transistor pulse train generator.
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