HIMANSHU BISARIA
@larpm.gov.in
Project Scientist, R&D
Laboratory for Advanced Research in Polymeric Materials (LARPM)
EDUCATION
PhD (Mechanical Engineering):Motilal Nehru National Institute of Technology, Allahabad
RESEARCH INTERESTS
Composite materials
Advanced Machining
Smart materials
Biomaterials
Scopus Publications
Scholar Citations
Scholar h-index
Scholar i10-index
Scopus Publications
Somanath Ojha, Himanshu Bisaria, Smita Mohanty, and Krishnan Kanny
Wiley
AbstractThe present research paper investigates the chemical, thermal, mechanical, thermo‐mechanical properties, and fractography of sandwich composites made from E‐glass‐reinforced isophthalic polyester with Poly Vinyl Chloride (PVC) foam as a core by hand. These composites are commonly used in marine applications and manufactured by hand lay‐up method. A comparison is made between the properties of the PVC foam polyester sandwich composite with E‐glass layers on both sides (SC1) and the PVC foam isophthalic polyester sandwich composite with double layers of E‐glass on both sides (SC2) in relation to single‐layer E‐glass. Fourier transform infrared (FTIR) spectroscopy is employed to analyze the chemical composition of the composites. Various mechanical properties, including impact strength, flexural strength (FS), fracture toughness, and tensile strength (TS), are evaluated for the fabricated composites. Thermo‐mechanical and thermal properties are examined using dynamic mechanical analysis and thermogravimetric analysis (TGA), respectively. The chemical analysis identifies the unsaturation sites of (CH2)n, carbonyl group CO of the ester group, and the stretching of CH and CH3. The mechanical properties of SC2 composites are observed to be superior to those of SC1 composites. TGA revealed that both SC1 and SC2 composites showcased comparable temperature‐dependent weight loss patterns. Nonetheless, the SC2 composite displayed elevated glass transition temperature values and superior damping properties, as indicated by its higher Tanδ values. Examination of the fractured surfaces using a scanning electron microscopy (SEM) micrograph reveals a honeycomb structure, matrix cracking, and fiber pullout.Highlights Examination of the chemical, thermal, mechanical, and thermo‐mechanical attributes of sandwich composites made from E‐glass‐reinforced isophthalic polyester with PVC foam as the core. Evaluation of the impact of E‐glass layering on the thickness of the composite skin. Analysis of interfacial properties through FTIR techniques. Assessment of mechanical properties like impact strength, FS, fracture toughness, and TS. Investigation of fracture surfaces using SEM.
Somanath Ojha, Himanshu Bisaria, Smita Mohanty, and Krishnan Kanny
Wiley
AbstractIn the past decade, polymer‐based glass fiber‐reinforced laminate composites have gained significant popularity in various mass transit applications, including marine, aircraft, and automotive industries. However, it is crucial to consider the degradation and potential failure of these materials, especially in mass transit networks. To address this concern, fractographic analysis has emerged as a valuable approach for investigating fracture surfaces, extracting vital information, and facilitating the development of new materials. Furthermore, it sheds light on the underlying physical mechanisms that contribute to composite failure. This paper primarily focuses on examining flaws, failure modes, and performing fractography analysis on fiber‐reinforced polymer (FRP) laminate composites subjected to various loading conditions such as tension, compression, flexure, impact, shear, and fracture. Fractography, as an indispensable method, plays a pivotal role in the comprehensive development of composite structures and has become a reliable tool for composite engineers. The outcomes of this study are expected to serve as a foundation for identifying areas that require further investigation in terms of fracture analysis and failure modes specific to FRP composite materials, particularly those used in marine applications.Highlights Introduction to FRP laminate composites in marine structures. Concise analysis of failure modes in FRP laminate composites. SEM fractography review of FRP laminate composites under varied loading conditions. Comprehensive study on tensile, flexural, impact, compression, shear, and fracture toughness failure modes. Summarization of identified defects in FRP composites.
Somanath Ojha, Himanshu Bisaria, Smita Mohanty, and Krishnan Kanny
SAGE Publications
The chemical, mechanical, thermal, and microstructural properties of Poly Vinyl Chloride (PVC) foam based E-glass reinforced polyester sandwich composites are evaluated as compared with single layer E-glass both side of PVC foam polyester composite (C1) and double layer E-galss both side of PVC foam polyester composite (C2). Fourier transform infrared (FTIR) spectroscopy was used to analyze the chemical composition of composites. The mechanical properties of fabricated composites were studied in terms of impact, flexural, and tensile strength. Thermogravimetric analysis and Dynamic mechanical analysis tests were done for examine thermal properties. Carbonyl group –C=O of the ester group, unsaturation sites of –(CH2)n–, CH, and CH3 stretching were identified in chemical analysis. The tensile strength and tensile modulus for C2 was found higher 37% and 152% more respectively as compared to C1 composite however C1 composite showed better flexural properties as compared to C2. C2 composite has a 31% higher impact strength than composite C1. Both C1 and C2 composite showed approximately equal thermal stability whereas C2 composite showed better damping properties. SEM micrograph of fractured surface divulges the fiber pullout, matrix cracking, and honeycomb structure. Fabricated light weight sandwich composites can be used for marine application.
Himanshu Bisaria and Arun Kumar Rouniyar
Springer Science and Business Media LLC
Somanath Ojha, Himanshu Bisaria, Smita Mohanty, and Krishnan Kanny
SAGE Publications
This study examined the mechanical performance of two polyester resins (isophthalic and orthophthalic) used to create e-glass-based laminate composites for the marine industry. The current study performed a static analysis of laminate composites using compressive, impact and hardness tests. Single edge-notched beam (SENB) fracture tests under mode I (i.e. opening mode) were performed on e-glass reinforced orthophthalic polyester laminate composites (S1) and e-glass reinforced isophthalic polyester laminate composites (S2) at cryogenic temperature (−10°C), ambient temperature (25°C) and high temperature (100°C). The interaction between fibres and matrix material was studied using Fourier transform infrared (FTIR) spectroscopy. A scanning electron microscope (SEM) was used to examine the substructure of fractured surface. A water absorption test was also performed on the fabricated samples. FTIR study revealed NH stretching, CH bend, CN stretching, C-O-C and CH-stretching. e-Glass isophthalic polyester composites had higher compressive strength, impact strength, hardness, fracture toughness and fracture energy than orthophthalic polyester laminate composites. The decrease in temperature increased the fracture properties. In both types of laminate composites, as the temperature increased, the fracture toughness and fracture energy decreased. The diffusion and permeability coefficients of isophthalic composites were greater than those of orthophthalic-based composites. The crushed fibre, fibre pull-out, riverline, matrix-fibre delamination and debonding are all evident in the fractured surface SEM micrograph.
Himanshu Bisaria and Pragya Shandilya
Informa UK Limited
Shlok Agrawal, Hritik Ray, Abhijeet Kulat, Yashwardhan Garhekar, Rahul Jibhakate, Sushil Kumar Singh, and Himanshu Bisaria
Elsevier BV
Somanath Ojha, Himanshu Bisaria, Smita Mohanty, and Krishnan Kanny
Thomas Telford Ltd.
Composite materials have distinct properties such as a high strength-to-weight ratio, high corrosion resistance, a high modulus-to-weight ratio and wear resistance. The potential, strong mechanical properties and lower cost of E-glass fiber motivated the authors to carry out this work. Tensile, flexural and Izod impact tests were used in the current study to conduct a static analysis of an E-glass-reinforced isophthalic polyester composite and an E-glass-reinforced general-purpose (GP) or orthophthalic polyester composite. The thermal–mechanical behavior was investigated using thermogravimetric analysis and dynamic mechanical analysis tests. Furthermore, the surface morphology of the tested composites was examined using scanning electron microscopy (SEM). When compared with the E-glass-reinforced GP polyester composite, the E-glass–isophthalic polyester composite demonstrated superior flexural properties and thermal stability. However, the tensile and impact properties of the E-glass–GP polyester composite were found to be higher than those of the E-glass–isophthalic polyester composite. SEM images show fiber pullout, matrix cracking and fiber breakage, among other things. The loss modulus and damping values of the E-glass-reinforced GP polyester composite were found to be greater than those of the E-glass-reinforced isophthalic polyester composite. The current composite can be used in marine applications, particularly the hull frame or body of the boat.
Himanshu Bisaria, Bharat Bhusan Patra, and Smita Mohanty
Informa UK Limited
Bipin Wankhede, Himanshu Bisaria, Somanath Ojha, and Vinayak Sanjay Dakre
SAGE Publications
Natural fibres may be a good alternative to synthetic fibres when reinforcing polymer composites in order to maintain a healthy environment. Cotton is a natural fibre with many benefits, including low density, good heat conductivity, high flexibility, resilience, elasticity and renewability. Cotton's crystalline and fibrillar structure accounts for its exceptional strength. We were inspired to conduct this review because of the potential of cotton fibre, as well as its mass production and low cost. This article reviews and summarises the mechanical properties of cotton fibre-reinforced polymer composites, including their flexural, tensile and impact properties. The effect of compatibilizers on the adhesion of two different phases of a composite material was also investigated in this study. Cotton fibre-reinforced composites were investigated as a replacement for desirable features by the textile, building and automotive industries. The industrial applications of cotton fibre-reinforced polymer composites are also highlighted in the final section.
Aiyeshah Alhodaib, Pragya Shandilya, Arun Kumar Rouniyar, and Himanshu Bisaria
MDPI AG
Powder mixed electrical discharge machining (PM-EDM) is a technological advancement in electrical discharge machining (EDM) processes where fine powder is added to dielectric to improve the machining rate and surface quality. In this paper, machining of Nimonic-90 was carried out using fabricated PM-EDM, setup by adding silicon powder to kerosene oil. The influence of four input process parameters viz. powder concentration (PC), discharge current (IP), spark on duration (SON), and spark off duration (SOFF) has been investigated on surface roughness and recast layer thickness. L9 Taguchi orthogonal and grey relational analysis have been employed for experimental design and multi-response optimization, respectively. With the addition of silicon powder to kerosene oil, a significant decrease in surface roughness and recast layer thickness was noticed, as compared to pure kerosene. Spark on duration was the most significant parameter for both surface roughness and the recast layer thickness. The minimum surface roughness (3.107 µm) and the thinnest recast layer (14.926 μm) were obtained at optimum process parameters i.e., PC = 12 g/L, IP = 3 A, SON = 35 μs, and SOFF = 49 μs using grey relational analysis.
Himanshu Bisaria and Pragya Shandilya
SAGE Publications
The current study unveils the variation of surface integrity aspects (micro-hardness, surface crack density, and surface characteristics) for Ni55.95Ti44.05 shape memory alloy (SMA) with wire electric discharge machining (WEDM) process parameters, namely, pulse off time, wire tension, spark gap voltage, wire feed rate and pulse on time. The experimental results reveal that micro-hardness displays direct relationship with spark gap voltage, pulse on time, and pulse off time whereas surface crack density shows direct relationship with pulse on time and inverse trend with spark gap voltage and pulse off time. Wire tension and wire feed rate show trivial effect on both surface crack density and micro-hardness. Machined surface comprises crater, micro-cracks, micro-voids, pockmarks, and lumps of debris while inspecting through a scanning electron microscope (SEM). During energy-dispersive X-ray spectroscopy (EDS) analysis, the foreign elements namely carbon, oxygen, copper and zinc were also detected on the surface. The high energy density at higher pulse on time adversely affects the surface morphology. The formation of large size craters (deep and wide) with more cracks on the machined surface were observed at lower pulse off time as compared to higher pulse off time.
Himanshu Bisaria and Pragya Shandilya
Springer Science and Business Media LLC
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Himanshu Bisaria and Pragya Shandilya
Springer Science and Business Media LLC
Himanshu Bisaria and Pragya Shandilya
Informa UK Limited
ABSTRACT In wire electrical discharge machining (WEDM) process, to the machine, sharp corner without error is an extremely challenging issue which is vital for precision machining. Owing to the presence of huge wire deflection, the accuracy of the machined corner is undesirably affected. The aim of this study is to explore the effect of process parameters namely, spark on time, spark off time, wire tension, wire feed rate, and spark gap voltage on corner error for acute angle (60°), right angle (90°) and obtuse angle (120°) triangular profiles during WEDM of Ni50.89Ti49.11 shape memory alloy (SMA). Owing to the effect of discharge concentration, corner error for acute angle profile is predominantly affected by spark on time, spark off time, and spark gap voltage. Wire tension was the most influencing parameter for corner error of obtuse and right angle profile due to the effect of wire deflection and wire vibration, whereas wire feed rate has trivial effect for all type of profile. In order to reduce the corner error, pulse modification technique was utilized. At low pulse parameters, corner error for 60°, 90°, and 120° profile was reduced by 43.38%, 31.12%, and 29.04%, respectively, as compared to high pulse parameters.
Himanshu Bisaria and Pragya Shandilya
Springer Science and Business Media LLC
Himanshu Bisaria and Pragya Shandilya
SAGE Publications
Owing to the increasing demand for Ni-rich shape memory alloys in various sectors such as biomedical, aerospace, and robotics, the efficient machining of shape memory alloys is vital for their productive exploitation. The aim of this experimental investigation is to explore the influence of wire electric discharge machining process parameters such as spark gap voltage, wire tension, spark off time, wire speed, and spark on time, on the cutting efficiency and surface roughness of Ni50.89Ti49.11 SMA using one factor at a time approach. The results reveal that cutting efficiency and surface roughness are strongly influenced by spark off time, spark on time, and spark gap voltage, whereas wire speed and wire tension have the inconsequential effect. The presence of many microcracks, craters, voids, bulges of debris, and the re-solidified layer of molten material on the machined surface have been detected in scanning electron micrographs. The results of phase analysis using energy-dispersive X-ray spectroscopy and X-ray diffraction divulge the migration of foreign elements from the brass wire and dielectric to the machined surface. Due to the formation of recast layer and various oxides, the hardening effect near the machined surface was also observed. The hardness near the machined surface has been increased several times in comparison to bulk hardness.
Himanshu Bisaria and Pragya Shandilya
Informa UK Limited
ABSTRACT Nimonic C-263 superalloy offers a wide range of outstanding properties, namely, high-temperature resistance, high specific strength, high thermal fatigue, and hot corrosion resistance. The concern of the present study is mainly focused on the effect of wire electrical discharge machining (WEDM) process parameters namely, spark energy, spark frequency, and peak current on surface roughness, average cutting rate, and surface integrity aspects of Nimonic C-263 superalloy by using one-parameter-at-a-time (OPAT) approach. Surface roughness and average cutting rate were showing the increasing trend with the spark energy and peak current and reverse trend with the spark frequency. Surface integrity aspects of Nimonic C-263 such as surface topography, surface morphology, recast layer thickness, elemental composition, and phase analysis have been also considered in this study. Scanning electron microscope (SEM) micrograph of the machined surface shows the presence of micro-voids, discharge craters, micro-globules, and droplets of molten material. A recast layer of minimum thickness, with less transfer of foreign atoms (Mo, C, and O) from dielectric fluid and molybdenum wire, has been formed at lower spark energy compared to higher spark energy. The various compounds of Ni, Fe, Al, and Ti such as Fe1.2Ni0.8, Fe1.5Ni0.5, Co0.06Fe0.94, and Alo.29Ni0.27Ti0.44 were formed on the machined surface identified through analysis of XRD peaks.
Himanshu Bisaria and Pragya Shandilya
Informa UK Limited
ABSTRACT The experimental investigation explores the effect of electrical discharge wire cutting (EDWC) variable parameters such as spark gap voltage, wire tension, pulse off time, wire feed rate, and pulse on time on the surface roughness, average cutting rate, and metallographic changes of Ni55.95Ti44.05 shape memory alloy (SMA). The spark gap voltage, pulse off time, and pulse on time have the significant effect on the surface roughness and average cutting rate, whereas wire tension and wire feed rate have the trifling effect. Ni55.95Ti44.05 SMA’s surface after EDWC is characterized by many discharge craters, microcracks, voids, and white layer of resolidified molten material. The elemental composition analysis of white layer using energy-dispersive spectroscopy divulges the deposition of the foreign element from the brass wire as well as the dielectric on the surface after EDWC. The machined surface as well as the wire electrode surface consists of various compounds of Ti, Ni, Zn, and Cu which have been identified by X-ray diffraction peak analysis.
Himanshu Bisaria and Pragya Shandilya
IOP Publishing
Nowadays NiTi SMAs are gaining more prominence due to their unique properties such as superelasticity, shape memory effect, high fatigue strength and many other enriched physical and mechanical properties. The current studies explore the effect of machining parameters namely, peak current (Ip), pulse off time (TOFF), and pulse on time (TON) on wire wear ratio (WWR), and dimensional deviation (DD) in WEDM. It was found that high discharge energy was mainly ascribed to high WWR and DD. The WWR and DD increased with the increase in pulse on time and peak current whereas high pulse off time was favourable for low WWR and DD.
Himanshu Bisaria and Pragya Shandilya
Elsevier BV
Himanshu Bisaria, M.K. Gupta, P. Shandilya, and R.K. Srivastava
Elsevier BV