Satish B Shenoy

• Professor at Manipal Academy of Higher Education, Manipal

Background/Objectives: The increasing demand for total hip arthroplasty (THA), due to aging populations and active lifestyles, necessitates advancements in implant materials and design. This review evaluates the role of surface coatings in enhancing the performance, biocompatibility, and longevity of hip implants. It addresses challenges like wear,...

Topology optimization has emerged as a promising technique to make the machines/machine components lightweight without compromising performance. This article investigates topology optimization of single pad externally adjustable fluid bearing operating in the high-speed application with two-way fluid–structure interaction (FSI) findings. The use of...

Department of Aeronautical and Automobile Engineering, Manipal Institute of Technology, MAHE, Manipal, India, in collaboration with Kyushu Institute of Technology (KIT), Japan, Universiti Putra Malaysia (UPM), Malaysia, Universiti Malaya (UM), Malaysia, and Cranfield University (CU), UK, is organizing the 8th International Conference on Computation...

Background Two-wheeled vehicles are the major mode of transportation in India. Such vehicles are exposed to excessive vibration on the road when compared to four-wheeled vehicles. However, the research on the reduction of whole body vibration in the case of two-wheelers is not explored in detail. The present study predicts rider comfort in the case...

In this study, the crashworthiness analysis of filled and unfilled bumper beams in head-on collisions was carried out through finite element simulations. The beam design was based on popular SUV brands in India. The outer bumper or fascia was made of AA6061-T6. Various advanced filler materials, including expanded polypropylene foam (cellular), pur...

Background Two-wheeled vehicles are the major mode of transportation in India. Such vehicles are exposed to excessive vibration on the road when compared to four-wheeled vehicles. However, the research on the reduction of whole body vibration in the case of two-wheelers is not explored in detail. The present study predicts rider comfort in the case...

The application of novel one-dimensional (1D) architectures in the field of energy storage has fascinated researchers for a long time. The fast-paced technological advancements require reliable rapid synthesis techniques for the development of various Multi-metal oxide (MMO) nanostructures. For the first time, we report the synthesis of a single-ph...

Background Two-wheeled vehicles are the major mode of transportation in India. Such vehicles are exposed to excessive vibration on the road when compared to four-wheeled vehicles. However, the research on the reduction of whole body vibration in the case of two-wheelers is not explored in detail. The present study predicts rider comfort in the case...

Ureters are muscular tubes that transport urine from the kidney to the bladder. The peristalsis wave is responsible for carrying urine to the bladder. With the regular appearance of peristalsis, areas with anatomic narrowing junctions are crucial for ureteral diseases. A three-dimensional flow analysis is performed for different time steps to under...

With Vertical Axis Wind Turbines (VAWTs) showing promising capabilities in the recent years, lately there has been an increase inresearch towards the performance enhancements of said VAWTs, respectively. The following study emphasizes on the conceptual design optimization of a Contra-Rotating VAWT (CR-VAWT) using Taguchi method and CFD. Using the T...

Patient-specific dynamic loadings are seldom considered during the evaluation of hip implants. The primary objective of this study is to check for the feasibility of the use of UHMWPE as the material for an acetabular cup over CoCr Alloy that is reported to produce a squeaking sound after replacement. An elliptical shaped stem with three different...

Novel materials such as fiber-metal laminates (FMLs) have demonstrated significant potential in a variety of applications. They must contend with problems such fatigue, creep, high-speed projectile impact, and deformation at high strain rates while in use. When employed as structural materials in aircraft, especially when exposed to shock wave impa...

Background: Two-wheeled vehicles are the major mode of transportation in India. Such vehicles are exposed to excessive vibration on the road when compared to four-wheeled vehicles. However, the research on the reduction of whole body vibration in the case of two-wheelers is not explored in detail. The present study predicts rider comfort in the cas...

Fatigue failure is one of the causes of the failure of hip implants. The main objective of this work is to carry out fatigue failure analysis on different hip profiles and compare the outcomes for various combinations of materials. Three profiles each for circular, oval, elliptical, and trapezoidal stems are utilized for this study with four differ...

Background: Stress distribution plays a vital role in the longevity and success of implant-supported prosthesis. This study evaluated the von Mises stress and microstrain in the peri-implant bone and the implant-abutment junction of short dental implants with three different implant-abutment connections in splinted and unsplinted conditions using...

The hip joint is one of the most essential joints for transmitting weights to the lower abdomen during day-to-day activities. Loosening of hip implants is mostly caused by wear. The wear assessment during the design stage offers a clear sense of the implant’s life expectancy, and modest adjustments in the design may also greatly enhance the implant...

Background: Two-wheeled vehicles are the major mode of transportation in India. Such vehicles are exposed to excessive vibration on the road when compared to four-wheeled vehicles. However, the research on the reduction of whole body vibration in the case of two-wheelers is not explored in detail. The present study predicts rider comfort in the cas...

Fiber metal laminates (FMLs) intended for blast and ballistic resistance applications need to contain ballistic grade plies like aramid (Kevlar®), ultra-high molecular weight polyethylene (Spectra®) as supporting plies in addition to the metallic layers. The order of stacking varies depending on the functional grading of plies. In the current work,...

The hip joint helps the upper body to transfer its weight to lower body. A Wear between the joints is the primary cause of the hip implant becoming loose. The wear can occur due to various reasons. Due to this revision surgery are most common in young and active patients. In the design phase of the implant if this is taken care then life expectancy...

Fluid film bearings are well suited for high-speed industrial machineries like turbine generators and marine propulsion systems. Several numerical methods are employed to theoretically investigate the flow phenomenon and performance parameters of journal bearings, operating under various conditions. This paper reviews various Computational Fluid Dy...

The development of armaments has brought forth the challenges of protection systems from gunfire and the like, while the advances in high energy explosives and availability, run the risk of intentional explosions like bomb blasts. The military forces, and the civilians worldwide, have suffered severe injuries/fatalities, victimized by attacks due t...

Orbital debris in space offers a constant threat to spacecraft, satellites, and the International Space Station (ISS). There is a growing concern as the number of satellites and other space objects keep increasing year-on-year with advancements in space exploration and orbital activities. The threat posed by the small debris or MMODs (micrometeoroi...

The scope of fiber metal laminates (FMLs) in the applications for shock and blastwave mitigation has been gaining a lot of focus recently. The response of the FML structures to side-on interaction with shock waves was experimentally investigated using a shock tube. The influence of incorporating ballistic grade fabrics as sandwiched plies between m...

The ability of Horizontal & Vertical Axis Wind Turbine (HAWT & VAWT) to harness the incoming wind is limited due to several factors such as structural constrains, fatigue problems, geographical and ecological issues, noise pollution, vibrational & acoustic losses. Diffuser Augmented Wind Turbine (DAWT) exploits the concepts of velocity augmentation...

Two-wheelers with a total industrial volume of 50 million units over the past decade are one of the most popular modes of transport. Two-wheelers irrespective of the fueled engine or electric variant, are steered by means of the Handle-bar. The handlebar type and quality affects the operational characteristics of the two-wheeler as well as the phys...

The total hip prosthesis is considered one of the greatest advancements in orthopaedic surgery in the early 20th century. In hip implant replacement, the stem is inserted into the femur and femoral head, acetabular cup, and backing cup over the stem. This felicitates the normal range of motion and stability of an individual compared to the natural...

In replacement surgery of the hip joint, an implant is replaced into the natural femur which recreates the articulation and functionally of a natural joint. Total hip replacement is significantly increasing by the day worldwide and is likely to increase by 174% by 2030. Primary revision is another major concern for total hip replacement with revisi...

One of the present industrial requirements is the development of high-speed, high-load-carrying capacity machines. The problem of instability in high-speed conventional fluid film bearings can be prevented with the use of externally adjustable fluid film bearings. In the present study, the elastohydrodynamic behavior of a single pad externally adju...

High-speed turbomachinery like turbine generators and marine propulsion systems uses special fluid film bearing called externally adjustable pad bearing due to their great advantages. The principal feature of this bearing is to alter the radial clearance and film thickness along the circumferential direction to improve the bearing performance param...

Purpose: The aim of this study was to assess and correlate the stress distribution in an anterior maxillary implant-supported prosthesis with 0°(degree), 15°, and 25° angulated titanium and zirconia abutments using a three-dimensional (3D) finite element analysis (FEA). Materials and methods: Six FEA models consisting of a dentate anterior maxil...

Bamboo (Arundinaria clarkei) short fibers were treated with 6% conc. NaoH solution for five different durations viz. 3 h, 6 h, 9 h, 12 h and 24 h. Effect on physical properties like diameter and density were studied. Fibers were examined using Scanning Electron Microscope (SEM) to study the effect of alkali treatment on its surface characteristics....

The phenomenal growth in the developments of micro/mini Unmanned Aerial Vehicles needs thin composite materials for its structural applications for weight reduction. As these structures experience high energy loading during their life cycle, the performance improvement of overall failure strain and toughness is deemed compulsory. This study investi...

Advanced polymer laminated composites are widely used in various external structural components in modern aircraft and aerospace applications. These structures are vulnerable to different types of impact, more commonly low-velocity impact during its manufacturing, regular service, maintenance, and/or other phases of its life cycle. Impact damages p...

In this study an attempt was made to explore the possibility of substituting 3D E-glass fabric with eco-friendly basalt fabric along with the modification of resin using MWCNTs, a material system about which very limited information exists. The study involved comparing the mechanical properties of two sets of composites. The first set was comprised...

The novel coronavirus responsible for COVID-19 has spread to several countries within a considerably short period. The virus gets deposited in the human nasal cavity and moves to the lungs that might be fatal. As per safety guidelines by the World Health Organization (WHO), social distancing has emerged as one of the major factors to avoid the spre...

Maxillary protraction and expansion is recommended to treat midfacial deficiency in patients with cleft lip and palate (CLP), where amount and direction of forces can change displacement and stress. This study assessed the initial displacement and stresses using Facemask and Maxgym forces with and without RME at +20∘, 0∘, and -20∘ angulation using...

Trends in the development of lightweight micro/mini Unmanned Aerial Vehicles (UAVs) demand thin composite laminates for their structural applications. As these structures experience impact loading during their life cycle, the performance enhancement in the through-the-thickness direction is deemed mandatory. This study investigates the application...

Hybridization of composites is one of the many ways to optimize cost, manufacturing process and strength required for a particular application. This demands a need for knowledge about the best possible ways to deal with the dissimilar materials in the composite system. Very little light has been shed about the stacking sequence implemented while de...

Fossil fuel is the major source of energy and is a fast depleting resource. The phenomenal increase in fossil fuel consumption has adversely affected carbon footprint impacting our environment. With strict environmental regulations in place, the focus towards renewable sources of energy is gaining momentum supported by recent advancement in technol...

In this paper, a review of natural fibers composites used in protective armors for ballistic applications like bulletproof vests is presented. It seeks to compile the results and establish natural fiber composites as an alternative to absolute synthetic composites used for the same application. The review assesses the latest articles under two cate...

3-D E-glass fabric reinforced epoxy composites at 6 mm thickness were fabricated for various orientations of the binder yarn viz. 0°, 30°, 45°, 60° and 90° respectively. Tensile, flexural, interlaminar shear stress tests were conducted to ascertain the influence of binder yarn orientation on the mechanical properties of the composites. The composit...

Background and objective The hip joint is the vital joint that is responsible for the bodyweight transfer from the upper body to the lower body. Due to age these joints are worn out and need to be replaced by artificial hip implants. Wear is the predominant factor that is responsible for the loosening of hip implants. The wear occurs between the jo...

This numerical study investigates the advantages/disadvantages of two commercial coronary stent designs for its flexibility. Coronary stents are medical devices used to treat atherosclerotic coronary arteries. A variety of geometrical designs of stents are available in the market which can be broadly classified as open cell and closed cell stent de...

[This corrects the article DOI: 10.1016/j.heliyon.2019.e01767.].

Hip implants consist of a stem, femoral head, acetabular cup, and backing cup. There is a wide variety of sizes and lengths. Their adaptability is limited because of the inter-anatomical variations. There is no single fit-for-all implant design that satisfies the orthopedic requirement satisfactorily. In this work, the trapezoidal-shaped stem with...

Purpose The purpose of this paper is to investigate by means of finite element analysis (FEA), the effect of polyethylene insert thickness and implant material, under axial loading following TKA. Design/methodology/approach The 3D geometric model of bone was processed using the CT scan data by MIMICS (3matic Inc.), package. Implant components were...

Background: The hip joint is the largest joint after the knee, which gives stability to the whole human structure. The hip joint consists of a femoral head which articulates with the acetabulum. Due to age and wear between the joints, these joints need to be replaced with implants which can function just as a natural joint. Since the early 19th ce...

Materials play a huge role in the shaping and development of human civilization. The need for materials started from the early stone-age where man needed fire to keep him warm and also to cook his food. Many materials such as copper, iron have been used in the past for few of the applications. But with the advancement of technology and new innovati...

In this work, a 3D urinary bladder was subjected to various pressure loading conditions mimicking the bladder filling volume. The bladder layer consisting of adventitia, detrusor and mucosa layer having different mechanical properties produced different deformation and stresses when subjected to the varying loads. The volume of the bladder changed...

Background: The Hip joint is the primary joint which gives stability to the human body. The wear and tear associated with age and other factors, require these joints to be replaced by implants using hip arthroplasty surgeries. Cobalt chromium alloy (CoCr), titanium alloy, stainless steel are some of the most common hip joint materials used for hip...

Background: Growing patients with cleft lip and palate (CLP) exhibit maxillary deficiency due to early surgical intervention. Maxillary protraction with expansion is the recommended treatment modality for deficient maxilla. Facemask is a conventional protraction appliance, and Maxgym is a new protraction appliance. The purpose of this study is to...

A combustion chamber of an engine operating at really high temperature expels a hot stream of gas and thus, may be equipped with a cooling device. To achieve a lower temperature around the combustion chamber, a valve facing the combustion chamber in which engine oil is circulated with the help of valve stems which are equipped with oil introduction...

Background The femur bone is an essential part of human activity, providing stability and support in carrying out our day to day activities. The inter-human anatomical variation and load bearing ability of humans of different heights will provide the necessary understanding of their functional ability. Objective In this study, femur bone of two hu...

Background Femur bone is an important part in human which basically gives stability and support to carry out all day to day activities. It carries loads from upper body to lower abdomen. Objective In this work, the femur having composite structure with cortical, cancellous and bone marrow cavity is bisected from condyle region with respect to 25%,...

Different types of orthodontic tooth movement may produce different mechanical stresses in varying locations within the root. The quantification of stress in the periodontal ligament is an important concept as stress in this tissue is transmitted to alveolus with subsequent bone remodeling and tooth movement. Constructing complicated three-dimensio...

Purpose: The purpose of this study was to compare the stress patterns on a four implant supported over denture with that of All-On-Four Concept. Method: The computed tomographic image of the human edentulous mandible was simplified into an arc shaped bone block of 7.5mm thick and 15 mm high with 1mm cortical bone layer. With the help of projector t...

Purpose: The biomechanical behavior of the two-implant-supported overdenture was compared with that of four-implant supported mandibular overdenture using the three dimensional finite element method (FEM). Thereby evaluating the von Misses stresses induced on the implants under different loading simulations. Materials & Method: Three dimensional mo...

Today, the turbomachinery engineering plays a vital role in the field of air breathing propulsion, most importantly the components like compressor, turbine and its possible numerical strategies to improve the overall efficiency especially in the transonic flow conditions. The main objective of this paper is to address the numerical solution for mos...

Development of new materials in place of existing traditional metals and alloys to meet specific requirements is taking place worldwide. Natural fibre reinforced composites are being considered as one of the alternative materials which can find scope in indoor and low load bearing applications. The biodegradability and low density make them attract...

A posterior stabilized type of total knee replacement (TKR) device was used to assess the impact of material of tibial tray and varying posterior tibial slopes on the periprosthetic bone region. Two type of tray material viz. all-polyethylene (AP) metal-backed (MB) and four posterior tibial slopes (0°, 3°, 5° and 7°) were considered in a subject-sp...

Hip joint is the second largest joint in human after knee joint. It is associated with different types of motion which helps in the movement of human body and provide stability. Biomechanics involves the study of movement of living organism. It is important to know and understand the basics of biomechanics of hip joint to define the movement of hip...

Numerical analysis of complex physical environment continues to be preferred over "build and test" approach in product development process. Finite Element Analysis (FEA) of coronary artery stenting is studied and researched worldwide for many years. Potential of using FEA for mimicking in-vivo is high as experimental test is ruled out for variety o...

Gas turbines are used in power plants to supply peak loads in hydro-plants and they are also used in jet, aircraft and ships for propulsion. Turbine blades extract energy from high temperature and pressure of combustion gases. In order to endure this extreme condition of temperature, gas turbine blades are often cooled internally. This ensures that...

Coronary stents are tubular, mesh-like structures used to force open clogged artery. Mounted on an inflatable balloon, stent compresses calcified plaque inside atherosclerotic artery with an inflating device, which transfers the load through the compliant balloon, thus maintaining the patency of lumen. One of the contributors for success of angiopl...

Today the aircraft industry is looking for faster and safer engines for both civil and military applications. The performance of all different types of air breathing engines depends on the amount of mass flow rate of air entering and hot gas ejecting out from the engine. Thrust is the key role for any engine performance. To achieve more thrust all...

In the recent years the development of turbomachinery materials performance enhancement plays a vital role especially in aircraft air breathing engines like turbojet engine, turboprop engine, turboshaft engine and turbofan engines. Especially the transonic flow engines required highly sophisticated materials where it can sustain the entire thrust w...

Natural fiber reinforced polymer composites were prepared using unsaturated polyester resin reinforced with bast fibers extracted from Grewia Serrulata trees. The extracted fibers were subjected to sodium hydroxide pretreatment followed by exclusive chemical treatments such as acetylation, permanganate treatment and Silane coupling treatment to mod...

Gas turbines have become one of the most important prime movers especially in aircraft propulsion, land-based power generation, and industrial applications. Cooling of gas turbine blades is a major consideration because HP stage blades are subjected to high temperature working conditions. Several methods have been suggested in the past for the cool...

Thermal efficiency and power output of gas turbines increase with increasing turbine rotor inlet temperature. The rotor inlet temperatures in most gas turbines are far higher than the melting point of the blade material. Hence the turbine blades need to be cooled. In this work, simulations were carried out with the leading edge of gas turbine blade...

Gas turbines are broadly used in propulsion of aircraft and in the generation of electric power. Conserving of gas turbine blades is a foremost importance since high pressure stage blades will be exposed to high temperature operational surroundings. Numerous techniques have been incorporated for the cooling of high pressure stage blades and one suc...

The stability of a bearing is influenced by the turbulent conditions encountered during its operation. In this paper, a linearised perturbation method is used to theoretically investigate the stability of a three-axial groove water lubricated bearing. The stiffness and the damping coefficients are plotted for different eccentricity ratios of the be...

Dynamic stiffness and damping coefficients of a finite journal bearing operating on TiO2 based nanolubricant are obtained using the linear perturbation approach. Time dependent version of governing Reynolds equation is modified to consider the couple stress effect of TiO2 nanoparticle lubricant additives. The viscosity variation of lubricant with v...

The objective of this paper is to give a holistic view of the most advanced technology and procedures that are practiced in the field of turbomachinery design. Compressor flow solver is the turbulence model used in the CFD to solve viscous problems. The popular techniques like Jameson's rotated difference scheme was used to solve potential flow equ...

Gas turbines are greatly operative engineered prime movers for transforming energy from thermal form (combustion stage) to mechanical form which is widely used for propulsion and power generation systems. The power output and thermal efficiency of gas turbine can be increased with increase in turbine inlet temperature of the hot gases. The modern g...

Natural fibre reinforced polyester composites were prepared using bast fibres as the reinforcement which were extracted from Grewia serrulata trees. Chemical treatments such as alkali pretreatment followed by permanganate treatment, acetylation and silane treatment were exclusively applied to modify the fibre surface. Hand lay-up technique with com...

The main aim of this work was evaluation of the displacements, strains and stresses in components of knee endoprosthesis by means of Finite Element Method. The semiconstrained knee endoprosthesis instrumented into femur and tibia bones was chosen for the analysis. The first step was preparation of full knee endoprosthesis geometrical model which wa...

orthodontic forces, research on lingual system is still limited. The purpose of this study is to evaluate the efficacy of two different lingual bracket systems using FEM. FEM of maxilla which included six upper anterior teeth, periodontal ligament has been created. Six upper anterior teeth were digitally arranged in final position using a new compu...