YaBeSH Digital Library: Recent submissions
Now showing items 14361-14380 of 316660
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Effect of Cavity Shapes on the Lubrication Performance of High Precision Static and Dynamic Thrust Bearing Under Eccentric Load
(The American Society of Mechanical Engineers (ASME), 2024)The oil cavity shapes, which represent the spatial structures for storing lubricant in static and dynamic thrust bearings, and offset distances, defined as the horizontal distances between the load center and the bearing ... -
Analysis of Variation in Sagittal Curvature of the Femoral Condyles
(The American Society of Mechanical Engineers (ASME), 2024)In designing femoral components, which restore native (i.e., healthy) knee kinematics, the flexion–extension (F-E) axis of the tibiofemoral joint should match that of the native knee. Because the F–E axis is governed by ... -
Implementation of a New Smart-Lubricant Model Using Generalized Newtonian Approach in Soft Elastohydrodynamic Lubrication
(The American Society of Mechanical Engineers (ASME), 2024)This is an inceptive attempt to replace the classical Bingham fluid model with a continuous double Newtonian power law-based constitutive equation for smart lubricants like magneto-rheological, electro-rheological, and ... -
Friction Variability in Slip Rings: Geometry and Stiffness Effects
(The American Society of Mechanical Engineers (ASME), 2024)This study explores the frictional dynamics in wire-on-V-groove contacts, particularly in slip rings, by examining the effects of contact geometry and loading stiffness. Our experimental setup, using three different custom ... -
Developing Linear-Elastic Material Models for Pressure Measurement Films in Steel–Steel and Wheel–Rail Contact
(The American Society of Mechanical Engineers (ASME), 2024)The contact between two steel components can be identified by using multiple methods, for example, by experiments using pressure measurement films or by computational simulations with finite element analysis (FEA). For FEA ... -
Microstructure, Mechanical Properties, and Wear Behavior of Dissimilar Metallic Coatings for Steel Discs of Butterfly Valves
(The American Society of Mechanical Engineers (ASME), 2024)In the present work, coating materials that can be welded to the EN 1.6220 low-alloy steel disc of a butterfly valve and are also compatible with the seal material, i.e., 17–4 PH steel, are studied. 312 duplex stainless ... -
Improving Signal Transmission Quality of Wind Turbine Pitch Slip Ring With Copper Matrix Composites
(The American Society of Mechanical Engineers (ASME), 2024)To improve the signal transmission quality, copper matrix composites added with different contents of carbon nanotubes (CNTs) and molybdenum disulfide (MoS2) were prepared. The electrical and tribological properties of ... -
A Review of Computational Fluid Dynamics Approaches Used to Investigate Lubrication of Rolling Element Bearings
(The American Society of Mechanical Engineers (ASME), 2024)Optimizing bearing performance is based on effective lubrication, especially in high-speed machinery, where minimizing churning and drag losses is of significant importance. Over the past few decades, extensive research ... -
Review on Carousel Heliostat Designs
(The American Society of Mechanical Engineers (ASME), 2024)An overview of carousel heliostats is given. The general advantages and disadvantages are explained first. To distinguish between the different designs, possible variants of the carousel architecture and of the main ... -
Closed-Loop Pointing Feedback for Heliostats in Concentrating Solar Power
(The American Society of Mechanical Engineers (ASME), 2024)Concentrating solar power (CSP) facilities need to ensure alignment of all sun-tracking heliostats onto the sunlight receiver. A method is proposed to keep all heliostats in a CSP facility under closed-loop pointing control ... -
Evaluation of Composite Structural Materials for Heliostat Cost Reduction
(The American Society of Mechanical Engineers (ASME), 2024)Structures manufactured from steel comprise up to 40% of a concentrating solar thermal power (CSP) heliostat's cost. Composite structures represent a potential opportunity to reduce this cost. A reference heliostat structural ... -
HelioPoint – A Fast Airborne Calibration Method for Heliostat Fields
(The American Society of Mechanical Engineers (ASME), 2024)The pointing calibration of a newly built heliostat field can take up to several years. The state-of-the-art method typically used is accurate but slow. A faster method could reduce the commissioning time and therefore ... -
Optimal Implant Positioning Following Total Knee Arthroplasty Using Predictive Dynamic Simulation
(The American Society of Mechanical Engineers (ASME), 2024)In this paper, a novel method is proposed for the determination of the optimal subject-specific placement of knee implants based on predictive dynamic simulations of human movement following total knee arthroplasty (TKA). ... -
Status Quo and Gap Analysis of Heliostat Field Deployment Processes for Concentrating Solar Tower Plants
(The American Society of Mechanical Engineers (ASME), 2024)Deployment of the solar field of a concentrating solar power plant is one of many factors that are integral to the success of a project. Knowledge transfer from outside the industry is limited due to the unique nature of ... -
Laboratory Demonstration of Grating Embedded Mirrors for Single-Shot Heliostat Optical Metrology
(The American Society of Mechanical Engineers (ASME), 2024)Concentrated solar power (CSP) plants need to monitor the surface slope error of thousands of heliostats with sub-milliradian accuracy. Large numbers of heliostats installed in harsh environments mean that measurement speed ... -
Analysis of Gaps in Techno-Economic Analysis to Advance Heliostat Technologies for Concentrating Solar-Thermal Power
(The American Society of Mechanical Engineers (ASME), 2024)The Heliostat Consortium (HelioCon) was launched in 2021 to advance heliostat technology. One of its first efforts was to do a detailed analysis of gaps in technology and capabilities in the heliostat industry and complete ... -
Heliostat Consortium: Gap Analysis on State of the Art in Wind Load Design
(The American Society of Mechanical Engineers (ASME), 2024)Wind loads are a major driver of heliostat cost. Standardized methods and tools are needed for a more detailed understanding of the static and dynamic loads of a heliostat design. This will enable cost reduction of ... -
Energetic and Exergetic Analyses of a Double-Pass Tubular Absorber for Application in Solar Towers
(The American Society of Mechanical Engineers (ASME), 2024)The present research integrates the concept of double-pass (DP) flows with high-temperature solar receivers to introduce an innovative design aimed at minimizing heat losses and optimizing performance. The new DP system ... -
A Waste Heat Assessment of a Manufacturing Facility With Consideration for Demand Matching Through Thermal Energy Storage
(The American Society of Mechanical Engineers (ASME), 2024)A waste heat assessment of a manufacturing facility was conducted. A physical survey identified potential waste heat sources. For these sources, the temporal fluctuations in temperature and flowrate, and the frequency of ... -
Modeling Development of a Receiver–Reactor of Type R2Mx for Thermochemical Water Splitting1
(The American Society of Mechanical Engineers (ASME), 2024)This work reports on the development of a transient heat transfer model for a prototype reactor of type R2Mx for thermochemical water splitting by temperature and pressure swing of ceria. Key aspects of the R2Mx concept, ...