Mechanical Engineering Commons^™

Optimal Synthesis Of Crank-Rocker Mechanisms With Optimum Transmission Angle For Desired Stroke And Time-Ratio Using Genetic Programming, Bahman Ahmadi, Behnam Ahmadi

Michigan Tech Publications, Part 1

Dimensional synthesis of crank-rocker mechanisms applied to provide some desired values of stroke and time ratio, is of utmost importance for designing an efficient mechanism. In the synthesis and manufacturing of crank-rocker mechanisms, the designers are further challenged by other design criteria, such as quality of motion. In this study, a novel approach based on genetic programming (GP) is proposed for dimensional synthesis of planar crank-rocker mechanisms with optimum transmission angle over the desired stroke and time-ratio. An analytical approach is elaborated which leads to an interesting relationship of length of the coupler and rocker links. It is, therefore, advised …

Analysis Of Mechatronically Controlled Turbines And Their Layout Schemes Used In Middle-Class Internal Combustion Engines, F Umerov, A Yangibaev

Technical science and innovation

This article will talk about the prospects for the possible use of gas-cylinder equipment on turbine internal combustion engines with a direct power supply system, consider the main possible methods of using such equipment and their results, identifying the best among them, taking such well-known car models as Chevrolet Tracker and Chevrolet Onyx as an example. Today there is an increase in the trend of transferring the car to two fuel supply. Installing gas-cylinder equipment on a turbo has also become quite popular. It is not difficult to make such a translation. It is only important to do this in …

Direct Material Property Determination: One-Dimensional Formulation Utilising Full-Field Deformation Measurements, Sreehair Rajan-Kattil, Michael A. Sutton, Subramani Sockalingam, Frank Thomas, Tusit Weerasooriya, Stephen Alexander

Faculty Publications

A direct approach is described to determine the elastic modulus distribution in a nominally heterogeneous material subject to tensile/compression loading and primarily experiencing deformations in the axial direction. The formulation is developed for uniaxial applications using basic theoretical constructs, resulting in a computational framework that has a matrix form [A] {E} = {R}, where the [A] matrix components are known functions of measured axial strains and axial positions, {R} components are known functions of axial body forces, applied loads and reactions and {E} components are the unknown elastic moduli at discrete locations along the length of the specimen. For a …

Assessment Of Stability Of The Body Elements Of A Dynamometric Car For Special Technical Purpose, F F. Khikmatov, Y O. Ruzmetov

Technical science and innovation

In the work, studies were carried out to assess the stability of the body elements of a dynamometric car for special technical purposes for the railways of the Republic of Uzbekistan. Distinctive features of the proposed design of the dynamometric car from the car of the analogue model 61-907 are considered. The results of theoretical calculations for the stability of the body elements of the developed design of a dynamometric car in three design modes are given: under compression, tension and impact.

The Vibration Sources Of Car Tractor Attachments, Sh Kh Kurbanov, U A. Rajapbayev

Technical science and innovation

This article presents measures to protect against the noise of operators during the work of machine-tractor units, and to prevent the occurrence of vibration as a result of tractor movement during work. Methods of acoustic processing of noise and vibration D-144; It has been proven that the noise characteristics of D-240T engines vary depending on the frequency of rotation of the crankshaft.

Extraction Of Cellulose Nanocrystals From Secondary Paper Waste And Their Use In Paper Production, E A. Egamberdiev, S K. Norboyev

Technical science and innovation

Cellulose nanocrystals were obtained by hydrolysis process from waste paper industry. The result of Fourier transform infrared spectroscopy (FTIR) for nanocellulose showed that no new chemical bonds were formed during the preparation of nanocellulose. The results of X-ray diffraction showed that the crystallinity of the macules produced in the treated and untreated paper industry was 66% and 73.8%, respectively. The results of nanocellulose revealed a natural needle-like fiber with a length of 300 nm to 600 nm, a diameter of 10 nm to 30 nm, and an aspect ratio in the range of 10 to 60. It was found that …

Preface For Millard Beatty, E. Baesu, Roger Fosdick

Department of Mechanical and Materials Engineering: Faculty Publications

Professor Beatty has contributed a wide variety of research papers and book articles on topics in finite elasticity, continuum mechanics and classical mechanics, including some fundamental experimental work. His works are clear and informative and expose a didactic quality. In the following, we briefly touch upon some of the highlights of his research involvement throughout the years.

Tensegrity Laboratory Drilling Rig For Earth And Space Drilling, Mining, And Exploration, Mohamed S. Khaled, Muhao Chen, Enrique Z. Losoya, Luis A. Rodriguez, Eduardo Gildin, Robert E. Skelton

Mechanical Engineering Faculty Publications

Drilling operations are increasingly becoming a manufacturing process where repeatability, versatility, and speed matter the most for an operator or future space missions. Nonetheless, the ongoing energy transition efforts will undoubtedly shape the objectives and priorities of drilling operators into new markets with unexplored technical challenges. Versatility, mobility, and automated systems will play crucial roles in determining successful applications. This study explores and introduces the application of tensegrity-based structures, commonly used in space exploration, to Earth and Space drilling systems by modeling, designing, and building a tensegrity-based miniature drilling rig. Robust models for designing a drilling rig based on tensegrity …

Design And Development Of A Multi-Material, Cost-Competitive, Lightweight Mid-Size Sports Utility Vehicle’S Body-In-White, Amit M. Deshpande, Rushabh Rajesh Sadiwala, Nathan Brown, Sai Aditya Pradeep, Leon M. Headings, Ningxiner Zhao, Brad Losey, Ryan Hahnlen, Marcelo J. Dapino, Gang Li, Srikanth Pilla

Publications

Vehicle light-weighting has allowed automotive original equipment manufacturers (OEMs) to improve fuel efficiency, incorporate value-adding features without a weight penalty, and extract better performance. The typical body-in-white (BiW) accounts for up to 40% of the total vehicle mass, making it the focus of light-weighting efforts through a) conceptual redesign b) design optimization using state-of-the-art computer-aided engineering (CAE) tools, and c) use of advanced high strength steels (AHSS), aluminum, magnesium, and/or fiber-reinforced plastic (FRP) composites. However, most of these light-weighting efforts have been focused on luxury/sports vehicles, with a relatively high price range and an average production of 100,000 units/year or …

Impulse, Fall 2022, University Marketing And Communications, Jerome J. Lohr College Of Engineering

Impulse (Jerome J. Lohr College of Engineering Publication)

2 | Sanjeev Kumar Takes Helm as College’s 12th Dean
5 | College Develops Partnerships in India, Turkey
6 | Faculty News
8 | Aerofly — Profs, Alum Partner To Build Unique Drone
10 | Researchers Find Way to Extend Produce Shelf Life
12 | SDSU Claims National Title in Quarter-Scale Tractors
14 | Nation’s Top ASCE Chapter Housed at SDSU
16 | National Geo-Video Title Won By State Students
18 | Summer Brings Engineering Camps to Campus
20 | Haleigh Timmer — Money on the Court, In Classroom
22 | Daniel Burkhalter — Day in the Life of Student-Athlete …

Nemesis Setup For Indirect Detection Of Wimps, W. H. Trzaska, Alexander Barzilov, T. Enqvist, K. Jedrzejczak, J. Joutsenvaara, M. Kasztelan, O. Kotavaara, P. Kuusiniemi, K. K. Loo, J. Orzechowski, J. Puputti, M. Slupecki, J. Szabelski, I. Usoskin, T. E. Ward

Mechanical Engineering Faculty Research

We summarize the evidence for DM-like anomalies in neutron multiplicity spectra collected underground with Pb targets by three independent experiments: NEMESIS (at 210 m.w.e.) NMDS (at 583 m.w.e.), and ZEPLIN-II (at 2850 m.w.e.). A new analysis shows small but persistent anomalies at high neutron multiplicities. Adjusted for differences in detection efficiencies, the positions of the anomalies are consistent between the three systems. Also, the intensities match when corrected for the acquisition time and estimated detection efficiency. While the three measurements are inconclusive when analyzed separately, together, they exclude a statistical fluke to better than one in a million. To prove …

Reliability Study Of A New Electromechanical Device Designed To Measure The Relative Dorsal Mobility Of The First Ray Of The Foot, Philippe Passeraub

Faculty Publications

Introduction: A new electromechanical instrument has been developed to measure relative dorsal mobility of the first ray in an objective and reliable way by simulating ground reaction forces during gait. This device equally applies a standardized, electronically controlled, and precise force under the first metatarsal head M1 as well as under the heads of the lesser metatarsals M2 to M5. The relative dorsal mobility between these two bearings is then measured. The purpose of this study is to assess the intra- and inter-examiners reliabilities of the measurements obtained with this device. Methods: The protocol included two examiners and 36 feet …

Enabling Ultrathick Electrodes Via A Microcasting Process For High Energy And Power Density Lithium-Ion Batteries, Tazdik Patwary Plateau, Hiep Pham, Yaqi Zhu, Ming-Chuan Leu, Jonghyun Park

Mechanical and Aerospace Engineering Faculty Research & Creative Works

Thickening electrodes is one effective approach to increase active material content for higher energy and low-cost lithium-ion batteries, but limits in charge transport and huge mechanical stress generation result in poor performance and eventual cell failure. This paper reports a new electrode fabrication process, referred to as µ-casting, enabling ultrathick electrodes that address the trade-off between specific capacity and areal/volumetric capacity. The proposed µ-casting is based on a patterned blade, enabling facile fabrication of 3D electrode structures. The study reveals the governing properties of µ-casted ultrathick electrodes and how this simultaneously improves battery energy/power performance. The process facilitates a short …

Additive Manufacturing Of Complexly Shaped Sic With High Density Via Extrusion-Based Technique – Effects Of Slurry Thixotropic Behavior And 3d Printing Parameters, Ruoyu Chen, Adam Bratten, Joshua Rittenhouse, Tian Huang, Wenbao Jia, Ming-Chuan Leu, Haiming Wen

Mechanical and Aerospace Engineering Faculty Research & Creative Works

Additive manufacturing of dense SiC parts was achieved via an extrusion-based process followed by electrical-field assisted pressure-less sintering. The aim of this research was to study the effect of the rheological behavior of SiC slurry on the printing process and quality, as well as the influence of 3D printing parameters on the dimensions of the extruded filament, which are directly related to the printing precision and quality. Different solid contents and dispersant- Darvan 821A concentrations were studied to optimize the viscosity, thixotropy and sedimentation rate of the slurry. The optimal slurry was composed of 77.5 wt% SiC, Y2O3 and Al2O3 …

Planar Compliance Realization With Two 3-Joint Serial Mechanisms, Shuguang Huang, Joseph M. Schimmels

Mechanical Engineering Faculty Research and Publications

In this paper, the realization of any specified planar compliance with two 3R serial elastic mechanisms is addressed. Using the concept of dual elastic mechanisms, it is shown that the realization of a compliant behavior with two serial mechanisms connected in parallel is equivalent to its realization with a 6-spring fully parallel mechanism. Since the spring axes of a 6-spring parallel mechanism indicate the geometry of a dual 3R serial mechanism, a new synthesis procedure for the realization of a stiffness matrix with a 6-spring parallel mechanism is first developed. Then, this result is extended to a geometric construction-based synthesis …

Me-Em Enewsbrief, September 2022, Department Of Mechanical Engineering-Engineering Mechanics, Michigan Technological University

Department of Mechanical and Aerospace Engineering eNewsBrief

No abstract provided.

Mems 411: Rock Collection Rover, Group, Kyler Schaetzle, Grant Ryals, Griffin Ancipink, Jackson Powell

Mechanical Engineering Design Project Class

The following report has been prepared for MEMS 411 Mechanical Engineering Design Project and contains information pertaining to the selected project, the Rocker Collecting Rover Contest project. The project required the team to construct a battery-powered, remote-controlled rover that is operated with a first-person camera and can collect “rocks” and hold them off the ground without damaging them. The rover will compete in a competition against all other groups to see which group can collect the most rocks in a five-minute period.

Mems411: We Rock N’ Roverin', Amy L. Xue, Ash Caine, Emily Ma

Mechanical Engineering Design Project Class

The goal of this project is to create a remotely-controlled rover that can reliably collect dice. The customer, Chiamaka Asinugo, requires a device that meets the needs of a potential challenge that the WURocketry Team might face in future “NASA Student Launch” competitions. These needs include the rover being able to fit into a theoretical payload cylinder that is 5.36" in diameter and 8.5" long and the rover weighing less than 3.5 lbs.

Mems 411: Graphene Flake Finder, Calvin Ball, Jonathon Hansen, Ivan Jaramillo

Mechanical Engineering Design Project Class

Graphene is an allotrope of carbon, a monolayer of carbon atoms arranged in a honeycomb-like structure. It is a zero-gap semiconductor, has a high opacity, has a large thermal conductivity, and has the largest intrinsic tensile strength known to humankind so far. It is not yet utilized in the industry as graphene is not efficient or cost-effective to mass produce. The production of graphene is done by flakes with tape at Dr. Erik Henrikson’s lab. We will make a motorized microscope stage that helps automate the location identification of graphene flakes that have been mechanically exfoliated onto silicon wafer chips. …

Mems 411: Rock-Collecting Rover, Nathan Fetchel, Derek Bivins, Emerson Hatina

Mechanical Engineering Design Project Class

This project was a MEMS 411 Senior Design project completed for a potential future WashU Rocketry Team rover contest. The rover was required to be battery operated, controlled by an RC transmitter/receiver, and utilize micro-servo motors for actuation. The rover was required to be navigated via 1st person camera. The rover needed to weigh less than 3.5 lbs, and able to fit into a 5.36" diameter and 8.5" long cylinder. The "rocks" needed to be stored inside the rover and to be collected without using adhesive.

Mems 411: Dog Mobility Aid, Grace Vinson, Amber Griffith, Thomas Liu

Mechanical Engineering Design Project Class

Henry, an 8-year-old dog, suffers from an angular limb deformity. We created a mobility aid for Henry to improve his quality of life. This device functions similarly to a crutch attached to the affected arm to eliminate compressive forces on his metacarpals.

Mems 411 - Prosthetic Arm Group W, Spencer Gladstone, Lila Dickstein, Nate Bloedorn, Matthew Riak

Mechanical Engineering Design Project Class

The customer, Ilana, sought to find a prosthetic arm to replace her current static
prosthetic. She has gotten used to using a prosthetic with no variable grips and
a somewhat heavy weight that can be a burden when dealing with her child or
day to day tasks. The design described in this report is an electronically powered
prosthetic that used a button to change between open and closed grips.

Mems 411: The Rock Collecting Rover Design Project, Henry Collins, Sam Mattecheck, Connor Burke

Mechanical Engineering Design Project Class

The rock collecting over project challenged groups to construct a small,, remote controlled rover that is able to move and collect dice.

Mems 411: Remotely Operated Rock Collecting Vehicle, Perry Brody, Toby Utterback, Annie Mascot, Bianca Lang

Mechanical Engineering Design Project Class

We were tasked with designing a remote-controlled vehicle that is capable of collecting and holding “rocks”. The device had to be battery powered and operated by an RC transmitter/receiver. The physical constraints required the vehicle to fit within the designated 5.25’’ diameter and 8.5’’ long cylinder. The goal was to maximize the number of "rocks" collected in 5 minutes.

Mems 411: Cnc Fabric Dispenser, Hayato Takai, Lizbet Suarez Mendoza, Jp Bermudez, Jeffrey Dai

Mechanical Engineering Design Project Class

This project aims to help Mary Ruppert-Stroescu with her zero-waste fashion project. The goal of this tool is to help Mary efficiently lay down fabric across a sheet of sticky paper to make a yard of reused fabric. The goal of our team was to create a machine that can work alongside Mary, rather than having her spend all her time at the machine. We wanted to make a machine that can work independently of Mary, so that she can focus her time on other things.

100s of lbs of fabric waste is part of American today. Mary's mission is …

Mems 411: Air Capture Dynamic Seal, Erik Truitt, Thomas Rexing, Cole Kelez, Hernan Perez

Mechanical Engineering Design Project Class

For the DAC (direct air capture) machine, a CO₂ collecting machine, it needs a seal that allows rotation while still being airtight. Currently, a liquid seal is used but is having issues with contamination and evaporation.

Mems 411: Softball Pitching Machine, Sebastian Laboy, Molly Mcnamara, Thomas Burke

Mechanical Engineering Design Project Class

This report includes our complete final project for MEMS 411 in the Fall 2022 semester. For this project, we chose to fill the need for a pitching machine solely focused on the needs of softball players. For this project, our customer is a collegiate softball player named McKenna Jablonske.

Mems 411: Dynamic Seal, Devin Fredericks, Abdul Majeed Lalani, Matthew Schmidt, Edward Tinnemeyer

Mechanical Engineering Design Project Class

The purpose of this design project is to design a dynamic seal to be used on AirCapture’s carbon capture machine. The task is to create an air-tight seal between the top and bottom halves of AirCapture’s carbon capture machine. The seal needs to be capable of periodically rotating and must not leak while in operation.

Mems 411: Group B Prosthetic Arm Design, Gage Fuller, Abby Jaeger, Oliver Reid, Max Gordon

Mechanical Engineering Design Project Class

Design a custom prosthetic arm for a customer who is missing her arm two inches past her elbow. Introduce mobility so that she can utilize the arm to perform more everyday tasks than she was able to before with her immobile arm.

Mems 411: Frame Redesign For A Dac Machine, Alyssa Bolander, Aaron Lombardi, Harry Hixson

Mechanical Engineering Design Project Class

This report focuses on the redesign of a 3’’ T-slot aluminum DAC frame. This design process focuses on minimizing cost and fasteners as the new frame will be made out of welded square steel tubing.