Brijesh Gangil

Hemwati Nandan Bahuguna Garhwal University | HNB · Department of Mechanical Engineering

As friction is inherently nonlinear, simulating its dynamics in a system is never an easy process. The study suggests a novel friction model that mimics the stiction friction model using sigmoid and exponential functions. The friction force value at 0.01 m/s, or just 1% of the whole velocity range, is precisely provided by the suggested model. The...

Utilization of inorganic waste, if included in composite material, can be beneficial in reducing the accumulation of waste, which could help in resolving problems of disposal. beside from that, incorporating waste into composite materials also reduces the overall cost of the composites as a whole. The study examines the impact of dolomite content o...

Operations research (OR) is an academic field that use sophisticated analytical techniques to enhance decision-making processes. The purpose of this book is to present a thorough and inclusive overview of operations research, encompassing both theoretical underpinnings and real-world implementations in many fields. The organization of each chapter...

The incorporation of natural fibers for the fabrication of composite blocks having applications in building construction has been amplified due to its favorable properties such as good mechanical bonding with adhesives, environment friendly, free of carbon emission, and easy to dispose after use. Therefore, in the present investigation, natural fib...

A solid substance encircled by a three-dimensional network of voids not interconnected with each other is referred to as close-cell metal foam. The work is based on enhancing mechanical properties of aluminum base close-cell metal foam through the addition of reinforcing particles in varying percentages. Closed-cell aluminum foams with the addition...

The natural and synthetic fibers are combined in a single composite to achieve a balance between the desired strength and cost considerations. In this study, the vacuum resin transfer moulding process was used to prepare an epoxy‐based composite. The composite consisted of grewia optiva as the natural fiber and glass fiber as the synthetic fiber, b...

In the present study, the influence of titanium oxide (TiO2) nano-filler was investigated for the mechanical and sliding wear properties of basalt–PLA hybrid composites. The TiO2 in the form of nano-filler was hybridized at different weight percent (0, 3, 6, and 9 wt. %) while keeping the basalt fiber weight percentage is fixed at 10 wt. % in all c...

The automotive and aerospace industries are replacing monolithic conventional materials with composite materials for making variety of components. The aluminum metal matrix composites (AMCs) are a lightweight high perforce materials. The aluminum matrix composites (AMCs) have high strength to weight ratio as well as high corrosion resistance proper...

Carpet industries, having international trade, employ a large number of skilled and non skilled labourers who face miseries and exploitation. Covid-19 pandemic has added to their miseries. The situation makes an urgent imperative to study their well being, job satisfaction and role of government initiatives. The present paper, based on secondary so...

Carpet industries, having international trade, employ a large number of skilled and non skilled labourers who face miseries and exploitation. Covid-19 pandemic has added to their miseries. The situation makes an urgent imperative to study their well being, job satisfaction and role of government initiatives. The present paper, based on secondary so...

In the present scenario, the research is now being focused on the naturally occurring polymers that can gradually replace the existing synthetic polymers for the development of bio composites having applications in medical surgeries and human implants. With promising mechanical properties and bio compatibility with human tissues, poly lactic acid (...

Biocomposites are now being viewed as an almost perfect alternative to conventional nonbiodegradable polymers. In addition, the use of natural fillers further augments the value of biocomposites by reducing the overall cost. In the present investigation, biocomposite was prepared using a compression molding method with a walnut (WN) shell as a fill...

Evacuated tube solar water heaters are gaining more attention in the present market scenario as compared to conventional collectors. Such collectors are versatile because no solar tracking is required and the operating temperature range is also broad. Comparatively, it is cost-effective and may attain higher thermal efficiency. However, like other...

Composite materials are emerging as a vital entity for the sustainable development of both humans and the environment. Polylactic acid (PLA) has been recognized as a potential polymer candidate with attractive characteristics for applications in both the engineering and medical sectors. Hence, the present article throws lights on the essential phys...

In the present study, waste of tasar silk fiber was used as reinforcement in the epoxy resin. Tasar silk fiber waste (TSFW) was pre-treated with NaOH coupling agent before reinforcing it with epoxy matrix. Treated and untreated TSFW-epoxy composites were made using the compression moulding technique. Composites were characterized for physical, mech...

The present study was designed to explore the applicability of dolomite dust (a waste from a dolomite quarry) as filler in polymer composites. Therefore, fixed carbon fiber reinforced vinyl ester composites with varying dolomite dust proportions (0, 5, 10 and 15 wt.%) are manufactured and subsequently evaluated for physicomechanical and sliding wea...

The reinforcement of natural fibre and fillers in polymer resin is the latest trend followed by research groups and industries for the development of sustainable composites. Basalt fibre and waste marble powder are naturally occurring substances used to enhanced polymer properties. The present research examined the effect of both basalt fibre and w...

The current segment comprises information of various bio-based fibers such as plant and animal fibers, their method of extraction, and their surface treatment. Application and the leading producer of bio-based fibers are also reported in the present segment. The effect of surface treatment on bio-based fibers and the challenges associated with the...

Being a biodegradable polymer, poly(lactic acid) (PLA) based composites receive greater preference over non-biodegradable plastics. Poly(lactic acid) has to find its place in various applications such as polymer composites, agriculture, biomedical, etc. Polymer composites based on PLA possess comparable mechanical strength, endurance, flexibility a...

The present environmental condition indicates the immediate need for sustainable materials containing mainly natural elements for composite fabrication. Encouragement of natural fibers in composite materials can significantly reduce the greenhouse effect and the high cost of manufacturing synthetic fiber-based polymer composites. Hence, this study...

This article investigates the effect of fabrication techniques on the physical, mechanical, and erosion wear properties of glass fiber reinforced dolomite dust‐filled epoxy composites. The composites were fabricated by hand layup and vacuum‐assisted resin transfer molding (VRTM) techniques with fixed glass fiber (20 wt%) and varying dolomite dust (...

Waste collected from the agricultural sector can be used as reinforcement in the composites to lower the material cost and encourage the renewable material to reduce carbon footprints. Hence, the current investigation evaluates the physical, mechanical, and wear properties of hybrid composite laminates comprising Tasar silk waste (a waste obtained...

In polymer composites, synthetic fibers are primarily used as a chief reinforcing material, with a wide range of applications, and are therefore essential to study. In the present work, we carried out the erosive wear of natural and synthetic fiber-based polymer composites. Glass fiber with jute and Grewia optiva fiber was reinforced in three diffe...

Nanobiology deals with nanoscale biological interactions, which are inherently revolutionizing the discipline of medicine. Nanobiology is the interplay between the chemistry, physics, and biology of a system. The small size makes these materials superlative and peerless in medicine. This chapters attempts to summarize contemporary developments in n...

Kenaf fiber (KF) is one of the strongest natural fibers that have found a vital place in various automotive and industrial applications. Kenaf fiber polymer composites are strong, durable, and biodegradable, which makes them useful for a variety of applications. The mechanical properties of kenaf fiber polymer composites are being investigated and...

The work carried in the present study deals with the physical and mechanical characterization of walnut filled-vinyl ester composite prepared by gravity die casting and centrifugal casting (functionally graded materials). Among the physical and mechanical properties, void content, hardness, flexural strength, and impact energy in the case of functi...

Green and sustainable material is the utmost prerequisite for the advancement of a healthy society and fulfilling the necessary for the improvement in material science. Naturally obtaining wood flour has the competence to be reinforced as a filler substance in the polymer composite. The present article deals with the usage of wood flour as a filler...

Hemp‐sisal natural fiber‐reinforced hybrid epoxy composites containing a varying proportion of silica nanoparticles (0, 1, 2, 3, and 4 wt%) were manufactured and subsequently evaluated for physical, mechanical, and sliding wear properties. The density of the composite was found to increase, whereas void content was found to decrease with the increa...

Biodegradable polymers have attracted much attention in various applications like agriculture, medicine, packaging, and drug delivery. Generally, biodegradable polymers are categorized as natural and synthetic polymers. Some are derived from nonrenewable resources like petroleum and others from renewable resources like biological materials. It has...

Scope of functionally graded materials (FGMs) has been showing positive response in the applications where materials are subjected to a elevated temperature (higher than room temperature). Numerous applications have greatly attracted to the FGMs due to its high wear resistance and toughness. To increase the applicability of FGMs, the present invest...

This paper is focused on fabricating TiB2 reinforced surface composites via the Friction Stir Process (FSP) method to study the effect of tool pin profile on mechanical properties. The surface composites were fabricated with the help of an experimental setup developed on the vertical milling machine. The microstructure analysis was carried out usin...

The emergence of solar PV systems is an important area of research due to the availability of these photovoltaics at cheaper rates. The emerging technology of PV is already being used in many parts of the world as a source of energy to reduce dependence on non-renewable sources. The recent popularity of Photovolatalic Thermal systems also known as...

Present work aims to investigate the thermal conductivity and mechanical characterization of the textile material reinforced polymer composites. Low cost needle-punched nonwoven fabric mat were used as reinforcing material. Polymer composites were developed with various weight percentages of 400gsm and 600gsm fabric mats in epoxy matrix by hand lay...

The present investigation explores the effect of mechanical fastening of natural filler (orange peel) based epoxy composite on the tensile, flexural, and impact strength. Open mold casting technique used to fabricate composites with the orange peel of average size 500 µm as filler material and epoxy and as a matrix material. Four compositions of sa...

In diverse engineering applications, ongoing research on natural fibres has extended its possibilities owing to outstanding physical, mechanical and anti-corrosive characteristics. Banana fiber, a natural fiber obtained as agricultural waste, can improve the properties of epoxy composite with an overall reduction in the cost. In this article, non-w...

The current research work is based on the effects of walnut content on mechanical and wear property of ramie-glass fiber epoxy composites. Four different variations of hybrid polymer composites were fabricated by varying walnut content range from 0 wt% to 9 wt%, while keeping ramie and glass fibre fixed (at 5 wt%). Results predict that the addition...

Natural abundance, high strength‐to‐weight ratios, and their biodegradable nature make bast fibers (belong to plant fiber) attractive as reinforcing agents in polymer composite world. However, certain restrictions such as inferior fire resistance, storing the raw fibers for extending duration because of possibility of degradability, and high water...

Aim of the study is to use natural and synthetic fibers to fabricate a prosthetic limb. Conventionally, natural fibers are not used for prosthesis. However, synthetic fibers such as Carbon fiber, Kevlar fiber and the Glass fiberare extensively in use as reinforcement in the manufacturing of prosthesis. In this paper the influence of different resin...

In the current scenario, components demand superior mechanical, thermal, and tribological properties that can be achieved with the use of synthetic fibers. However, the environmental and energy issues are the problem associated with the synthetic fiber composites. Because of this, natural fiber‐reinforced polymers (NFRPs) composites become the eye...

ABSTRACT: The aluminium matrix composites are classified as lightweight aluminium centric metal matrix composites. It has dual properties of metal and ceramic materials. Now a days, monolithic metals and conventional alloys have been replaced by aluminium metal matrix composites in many applications in the field of automobile and aerospace due to h...

Metal foams are cellular solids in which gas is uniformly distributed throughout the metal matrix. One of the cheapest ways of evolving the gas is introducing the blowing agent in parent metal in liquid state. A blowing agent is defined as a material that decomposes under the presence of heat and releases gas which then propels the foaming process....

Novel friction composites materials using pineapple fiber as a sustainable alternative for automotive industry were developed by increasing its amount from 5−20 wt.% in the step of 5 %. To compare the performance of pineapple fiber, friction composites with 5−10 wt.% of Kevlar fiber were also manufactured. The results of physico-mechanical properti...

The study was intended to investigate the influence of dolomite content on the physical, mechanical and erosive wear properties of hybrid natural-synthetic fiber reinforced polymer composites. Therefore, epoxy composites, having fixed amount of Grewia optiva and glass fiber with varying proportion of dolomite particles (0, 5, 10 and 15 wt.%) were d...

In this work, vinylester resin based and hybrid Kevlar-bagasse fiber reinforced homogeneous and graded composites were developed and evaluated for wear performance on a pin-on-disc machine. An orthogonal array (L16) was applied to examine the influence of four tribological control factors i.e. fiber content, normal load, sliding distance and slidin...

With the growing industrial development and reliance on fossil fuels, green house gas emission has become a major problem. Transportation plays a massive role in producing CO2 gas emission with personal vehicles producing the largest share. Light weighting is a possible solution of reducing the CO2 gas emissions. On an average, 100 kg of mass reduc...

Poor quality leads to poor efficiency. As the research progresses, the development in the sustainable material are also progresses. This change leads to enhancement in the efficiency of the product. Novel sustainable material is the need of the hour for the future development. Natural composite fits the best alternative to deal with environment pro...

This book chapter focuses on the development in replacement of first generation brake materials (asbestos) by organic fiber based polymer composites. This replacement is necessary as the asbestos brake pads causes hazardous effects to the human being and environment. Many researchers report the several organic alternatives for asbestos in different...

The research work aims to study the physico-mechanical and erosive wear behaviour of polyester fibre-based needle-punched nonwoven fabric mat reinforced epoxy composites. Therefore, the epoxy composites with varying proportion of polyester fibre-based needle-punched nonwoven fabric mat were fabricated and characterized for their physical , mechanic...

The cellulosic bast fibers are recognized as a justifiable and biodegradable substitute for producing moderate strength polymer composite materials because of their characteristics of renewability, eco-friendliness, and higher specific strength. Hence the aim of this research work is to fabricate Himalayan bast fibers (Nettle fiber (NF)/bauhinia va...

and sand abrasion wear behavior of glass fiber reinforced epoxy composites was investigated. An inorganic filler such as talc and organic filler like mustard cake with 0wt%,5wt%,10wt%, and 15wt% were loaded in glass epoxy composites by hand lay-up technique. The mechanical properties such as tensile strength, impact energy, and hardness was carried...

The physical, mechanical, and sliding wear properties of Grewia optiva and hybrid G. optiva/Bauhinia vahlii fiber-reinforced epoxy composites were investigated. Results reveal that 6 wt.% hybrid G. optiva/B. vahlii fiber-added composites resulted in highest physical (void content, water absorption) and mechanical (impact energy, hardness, tensile,...

The influence of cryorolling and post-deformation annealing on the tensile and fracture behaviour of aluminium–lithium (Al 8090) alloy is reported in the present investigation. The solution-treated (ST) alloy was cryorolled (CR) up to the true strain of 2.3 to achieve ultrafine-grained (UFG) microstructure and then annealed at different temperature...

In this research, the effect of rice husk fillers were investigated on physical, mechanical and sliding wear properties of on hybrid Bauhinia-vahlii-weight (BVW) and Bauhinia-vahlii-weight/sisal (BVWS) fibers reinforced hybrid composites. The rice husk content was hybridized by loading variation of 0, 2, 4 and 6 wt% with 6 wt% BVW and combined 6 wt...

In the present work, agriculture waste based biocomposites were developed by reinforcing corn starch resin with various rice husk and walnut shell content of 5, 10 and 15 wt.%. These fabricated biocomposites were investigated for physical, mechanical and thermal properties. It was found that the physical properties such as density and water absorpt...

The polymer materials are reinforced with various fiber/ particulate for enhancing the physical, mechanical, thermal and wear properties of the composite materials. The composites consist of both particulate and fiber for further improving the properties are of key interest to researchers. In addition to that, the composites are also fabricated in...

The present study is intended to investigate the influence of process parameters like pulse on time, pulse off time, pulse current and voltage on the performance aspects like material removal rate (MRR), tool wear rate (TWR) and surface roughness (SR) of cobalt bonded tungsten carbide work-piece in an electrical discharge machining (EDM) with graph...

In the present work, hybrid natural-synthetic fiber (bagasse and Kevlar) reinforced vinylester resin based homogeneous and functionally graded composites have been fabricated. The physical, mechanical, thermal and dynamic mechanical properties of the fabricated composites have been studied. The physical properties like, density and void content of...

An attempt has been made to study the influence of agro-waste filler on the mechanical and wear properties of bast fiber reinforced polymer composites. Two groups of the specimens, based on a combination of grewiaoptiva as fibrous material and epoxy as matrix material, and the grewiaoptiva containing specimens where hybridization is done with the a...

Epoxy composites reinforced with novel bast (Bauhinia vahlii) fiber and leaf (sisal) fiber combinations are designed, fabricated and characterized for physico-mechanical and sliding wear properties. The densities, void contents and the water absorption of these developed composites remain between the range of 1.247-1.254, 0.24-0.48% and 0.147-0.230...

In this article, hybrid analytical hierarchy process (AHP) and complex proportional assessment (COPRAS) approach was proposed to optimize automotive brake friction materials. Sixteen formulations based on phenolic resin, barium sulfate, Kevlar fiber, Lapinus fiber, multiwall carbon nanotube (MWCNT), nanoclay and graphite were formulated and evaluat...

Natural fibres are gaining interest as reinforcement for polymer composite due to their environ mental and cost-effective benefits. Bast fibres is a prominent reinforcement for use in polymeric materials because of its low weight and cost, eco-friendly and abundant in nature. Several authors manifest the advantageous usage of cellulosic bast fibres...

In this article, multiwalled carbon nanotube (MWCNT) filled and lapinus-Kevlar fiber reinforced friction composite material have been fabricated and characterized for their chemical, physico-mechanical and tribological properties. The experimental results indicated that the density, hardness, impact energy, tensile, and flexural strengths decreases...

The man-made fibers (glass, carbon and Kevlar) are widely used as reinforcing material in polymer composites because of high strength to weight ratio and stiffness as compared to conventional materials, i.e. steel, wood and concrete. Beside its primacy to the safety and environmental issues, polymer composites are becoming great contributions to va...

Closed-cell aluminum foams with different percentages of zinc content were successfully prepared and investigated. The foamable precursors were prepared in a pit furnace by adding calcium as thickening agent, calcium carbonate as blowing agent and different percentages (0 wt.%, 0.5 wt.% and 1 wt.%) of zinc particles at 650–750°C. The distribution o...

In the current research, the effects of walnut filler and fiber loading on mechanical properties of sisal-kevlar fiber based hybrid polymer composites were evaluated. Composites were fabricated by simple hand-lay-up technique. This research work describe the development and charcterization of new set of bidirectional hybrid polymer composite consis...

This research monograph reported the thermal behavior of Kevlar fiber reinforced/cement by pass dust (CBPD) filled vinyl ester resin based homogeneous and graded composite materials. The designed composites characterized for their thermal behavior via Thermo-Gravimetric Analysis (TGA) method. The thermal behavior of the composites could easily be u...

Natural fibres are gaining interest as reinforcement for polymer composite due to their environ mental and cost-effective benefits. Bast fibres is a prominent reinforcement for use in polymeric materials because of its low weight and cost, eco -friendly and abundant in nature. Several authors manifest the advantageous usage of cellulosic bast fibre...