Elamvazhudi.B
@ifet.ac.in
Associate Professor/ Mechanical Engineering
IFET College of Engineering
Scopus Publications
Scopus Publications
V. Velmurugan, B. Elamvazhudi, S. Kulothungan, and C. Mamimaran
IEEE
To support the competition and to produce industrial economically, it seems mostly that manufacturing systems must exhibit a high level of disgruntlement in their operation. Hence, to create such flexibility and thereby develop a Flexible Manufacturing System (FMS), it is necessary to reduce the human intervention in production. Flexibility in manufacturing can be understood and applicable through various standards & interpretations. In this work, the defects in the tools will be analyzed using image processing tools could exploit defects in the tool at a flexible manufacturing environment. Information from the installed sensors on vibration, acoustic emissions, spindle speed and cutting force in machine can be employed together to infer indirectly about tool flaws; portions or position referenced for correspondence mapping thus locating areas of interest. This information is primarily obtained through sensors, and upon processing this data it gives us some insight as to how the tool functions abnormally or where potential defects may be. A more direct approach is the non-contact cutting tool monitoring especially that which typically relies on vision images using optical inspection. This is because using this method, tool defects can be accurately described by size and position. It is possible to use digital image processing technologies to enhance the precision of the inspection and identification of the cutting tool’s condition. Besides making the methodology less rigid, it improves the reliability of cutting tool damage, workpiece defects, and tool positioning. In this case, the inspection process is aided by the DIP in providing extensive visual information concerning the condition of the tool. When it comes to this technology method, real-time control and quick decisions are provided and the dependence on people is significantly reduced, increasing versatility and manufacturing system performance. Therefore, the development of competitive and genuinely versatile production settings entails the incorporation of such advanced monitoring approaches.
C. Manimaran, B. Elamvazhudi, S. Kulothungan, and V. Velmurugan
IEEE
Nowadays, robots play an important part in our daily lives, decreasing human effort and error. Robots can be operated manually and automatically based on the requirement. This work's primary goal is to build and create a new robot that can conduct domestic surveillance. This robot can move around the area, gather information from the surrounding environment both visual and auditory and relay it to the user. The Internet of Things (IoT) enables control of the robot from a laptop or smartphone, and the wireless camera allows for daytime and nighttime live video streaming. Robot uses an Arduino microcontroller, an ultrasonic sensor, and an infrared sensor to gather data and transmit it to the microcontroller, which then regulates the robot's actions. Using object and motion detection, the user can identify the presence of people and objects in addition to the live streamed video output. This information provides a reliable surveillance activities. Further, this work may be applicable in defence areas to provide secret surveillance.
B. Elamvazhudi and S. Gopalakannan
ASTM International
B Elamvazhudi and S Gopalakannan
SAGE Publications
Optimizing the impact properties of polymer composites is essential in aircraft industries. Hybridization of fibres is one of the efficient methods to enhance the impact properties of polymer composites. Dispersion of nanoparticles into epoxy resin improves the toughness of composites. This study examines the low-velocity impact (LVI) behaviour of hybrid epoxy-based carbon/glass fibre-reinforced laminates. Initially, the epoxy resin was modified with 0, 0.5, 1, 1.5, and 2 wt% of nanoclay and TiO2 nanoparticles using mechanical stirring followed by an ultrasonication method. To investigate the influence of stacking sequences, laminates were fabricated with (90 G/0 G/90 C)S, (90 G/0 C/90 G)S, and (90 C/0 G/90 G)S. The samples used for this study are six-ply symmetric laminates. Laminates were impacted with different impact energies between 30 and 80 J with an impact velocity of 7 m/s to generate damages. The residual strength of damaged specimens is determined using compression after the impact test. The order of stacking, fibre orientation, and the presence of nanoparticles all have a significant impact on the residual strength of laminates. By using C-scan images, layer-wise damage mechanisms were identified. The specimen with (90 C/0 G/90 G)S sequence has very high damage resistance compared to other laminates.
B. Elamvazhudi, V. Velmurugan, P. Hemalatha, and K. Dhinesh
Springer Nature Singapore
B. Elamvazhudi and Digvijay Boodala
Elsevier BV
B. Elamvazhudi, S. Gopalakannan, and Mohamed Ashif
AIP Publishing
B Elamvazhudi and S Gopalakannan
IOP Publishing
Abstract Incorporating nanofillers in epoxy resin is a novel approach to improve the mechanical properties of polymer composites. Recent studies discloses that the inclusion of nanofillers such as SiC, CNT, alumina and nanoclay into epoxies at micro and nanoscale levels enhances the mechanical properties of epoxies. In this research, the improved mechanical properties of nanoclay modified carbon/glass fibre-reinforced polymer nanocomposite (FRPNC) were investigated. The neat DGEBA epoxy resin was modified with nanoclay at different wt % (0.5- 2wt %) by ultrasonication process for achieving better dispersion of nanofillers. The modified polymer laminates were fabricated with unidirectional carbon/glass fibres with the stacking sequences of (0°G/0°G/0°C)S using hand lay-up process. The mechanical properties such as mode III delamination toughness, tensile strength and flexural strength were investigated using servo controlled hydraulic universal testing machine and 3-point bending test setup respectively. The highly cross linked structure between epoxy and nanoclay particles improves the mode III fracture toughness, tensile and flexural properties. The damage mechanisms of fractured specimens are characterised by SEM images.
Elamvazhudi B and Gopalakannan S
IOP Publishing
Abstract Nanofillers dispersion in polymeric matrix has been identified as a novel method to enhance the mechanical properties of Fibre Reinforced Polymer Nanocomposites (FRPNCs). In general, addition of nanofillers in polymeric resin improves the fracture toughness, tensile and other properties of polymer composites. On the other hand, this inclusion significantly reduces the stiffness, strain at rupture and thermal properties. To overcome these limitations, hybrid nanofillers have been introduced in polymer composites. This work aims to investigate the effect of addition of hybrid nanofillers (Nanoclay-TiO2) on mode I interlaminar fracture toughness (GIC), tensile as well as flexural characteristics of carbon/glass/epoxy based composites. The pristine epoxy resin was modified with nanoclay and nanoscale TiO2 nanofillers together with different weight percentages (0.5, 1, 1.5 & 2 wt%) using mechanical stirrer followed by sonication process. The modified epoxy based carbon/glass polymer laminates were fabricated using hand lay-up process. The lay-up sequence considered in this study was (90 °C/90 °G/0 °G)S, (90 °G/0 °G/90 °C)S and (90 °G/0 °C/90 °G)S. The mechanical properties of modified laminates were characterized by DCB test, tensile and three point bending test. The experimental results show that the addition of hybrid nanofillers in epoxy resin increased the mode I interlaminar fracture toughness (GIC) by 77% at 1.5 wt%, tensile strength by 31% at 1.5 wt%, and flexural strength by 33% at 2 wt%. Further addition of nanofillers (<2 wt%) decrease the mechanical properties of FRPNCs as a result of matrix embrittlement. The toughening mechanisms such as fibre pull-out, fibre breaking, particles debonding, and crack deflection were identified at the fractured surfaces.
B. Elamvazhudi, , S. Gopalakannan, and
Blue Eyes Intelligence Engineering and Sciences Engineering and Sciences Publication - BEIESP
Theoretically predicting the service life of the Fiber Reinforced Polymer (FRP) laminates is important to design safe structural components. In common, failure of FRP laminates includes fiber/matrix cracking, delamination of fibers, debonding of reinforcement materials, and matrix failure due to stress gradients. Conventionally failure envelops of the FRP laminates are strongly depends upon maximum stress criterion and normal strain criterion. This review paper reveals the all the failure prediction theories based on stress and strain induced in laminates. This article covers the recent well established failure prediction theories and common modeling approaches of fiber reinforced polymer composites.
B. Elamvazhudi and S. Gopalakannan
Elsevier BV