A brief introduction of tribo-systems definition. The relevant variables play a role on system variables like friction, wear and lubricity are listed. Examples on the most common tribo-systems are exposed.
30° Tilting and 360° Rotating Mechanism
OVR SG series vibrator has 360° rotating and +/- 30° tilting mechanism. This mechanism makes it effective for pile driving on most sites from open areas to confined spaces or limited headroom.
30° Tilting and 360° Rotating Mechanism
OVR SG series vibrator has 360° rotating and +/- 30° tilting mechanism. This mechanism makes it effective for pile driving on most sites from open areas to confined spaces or limited headroom.
SELECTION OF THE DISC BRAKE MATERIAL USING PIN ON DISC APPARATUSijiert bestjournal
An automobil e brake disc is a device used for slowing or stopping the motion of a wheel while it runs at certain speed. The mostly used brake disc material is cast iron which consumes much fuel due to high specific gravity. The main aim is to develop the material selection and select optimum material for the application of brake disc system for better working. Th e paper describes the tribological behavior of the conventional materials i.e . Gray cast Iron,Structural steel,Aluminum and High speed steel (HSS) . In this paper to check major tri biological parameters for these four materials and try to suggest better new material compared to conventional existing material. After Test on wear machine we f ind the best suitable material for disc brake applications because of its low wear rate,low frictional force,low coefficient of friction,low cost,better mechanical properties than o ther.
The standard disc brake of a 4-wheeler model was done using Autodesk Mechanical Simulation through which the properties like deflection, heat flux and temperature of disc brake model were calculated. It is important to understand action force and friction force on the disc brake new material, how disc brake works more efficiently, which can help to reduce the accident that may happen at anytime.
Thermal and Structural Analysis Using Fea on Pillar Vains Type Ventilated Dis...IJSRD
Safety aspect in automotive engineering has been considered as a number one priority in development of new vehicle. Each single system has been studied and developed in order to meet safety requirement. Instead of having good suspension systems, Air bags, good handling and safe cornering, there is one most critical system in the vehicle which is brake systems. Without brake system in the vehicle will put a passenger in unsafe position. Therefore, it is must for all vehicles to have proper brake system. For the purpose of safety and increased life cycle of the disc brakes this paper deals with the design modification of a disc break so as to produce better thermal and structural performance.
boundary lubricated plain bearings are extensively used in machines but hardly described and explained at engineering schools or in real world. here, some basics are described and explained for engineering students as well as machine designers.
An example of using FEA to improve a series of automotive wheel designs. Wheels must pass durability tests to be certified for use. This family did not pass the tests and a large investment had been made in tooling. The company did not want this investment to go to waste and assigned me the task to resolve the issue soon after hiring me. This is a brief outline of the changes made to improve the wheel such that all tests were passed. It should be noted that all work was done virtually and all tests were passes first time after tooling modifications.
Design & Analysis of a Disc Brake using Feaijceronline
International Journal of Computational Engineering Research (IJCER) is dedicated to protecting personal information and will make every reasonable effort to handle collected information appropriately. All information collected, as well as related requests, will be handled as carefully and efficiently as possible in accordance with IJCER standards for integrity and objectivity.
One of the most frequently used types of seal is the rotary lip seal, generally used for sealing lubricating oil or grease in rotary shaft applications. Lip seals appeared at beginning of the 1900s and they are still unbeaten in many rotary and reciprocating applications.
SELECTION OF THE DISC BRAKE MATERIAL USING PIN ON DISC APPARATUSijiert bestjournal
An automobil e brake disc is a device used for slowing or stopping the motion of a wheel while it runs at certain speed. The mostly used brake disc material is cast iron which consumes much fuel due to high specific gravity. The main aim is to develop the material selection and select optimum material for the application of brake disc system for better working. Th e paper describes the tribological behavior of the conventional materials i.e . Gray cast Iron,Structural steel,Aluminum and High speed steel (HSS) . In this paper to check major tri biological parameters for these four materials and try to suggest better new material compared to conventional existing material. After Test on wear machine we f ind the best suitable material for disc brake applications because of its low wear rate,low frictional force,low coefficient of friction,low cost,better mechanical properties than o ther.
The standard disc brake of a 4-wheeler model was done using Autodesk Mechanical Simulation through which the properties like deflection, heat flux and temperature of disc brake model were calculated. It is important to understand action force and friction force on the disc brake new material, how disc brake works more efficiently, which can help to reduce the accident that may happen at anytime.
Thermal and Structural Analysis Using Fea on Pillar Vains Type Ventilated Dis...IJSRD
Safety aspect in automotive engineering has been considered as a number one priority in development of new vehicle. Each single system has been studied and developed in order to meet safety requirement. Instead of having good suspension systems, Air bags, good handling and safe cornering, there is one most critical system in the vehicle which is brake systems. Without brake system in the vehicle will put a passenger in unsafe position. Therefore, it is must for all vehicles to have proper brake system. For the purpose of safety and increased life cycle of the disc brakes this paper deals with the design modification of a disc break so as to produce better thermal and structural performance.
boundary lubricated plain bearings are extensively used in machines but hardly described and explained at engineering schools or in real world. here, some basics are described and explained for engineering students as well as machine designers.
An example of using FEA to improve a series of automotive wheel designs. Wheels must pass durability tests to be certified for use. This family did not pass the tests and a large investment had been made in tooling. The company did not want this investment to go to waste and assigned me the task to resolve the issue soon after hiring me. This is a brief outline of the changes made to improve the wheel such that all tests were passed. It should be noted that all work was done virtually and all tests were passes first time after tooling modifications.
Design & Analysis of a Disc Brake using Feaijceronline
International Journal of Computational Engineering Research (IJCER) is dedicated to protecting personal information and will make every reasonable effort to handle collected information appropriately. All information collected, as well as related requests, will be handled as carefully and efficiently as possible in accordance with IJCER standards for integrity and objectivity.
One of the most frequently used types of seal is the rotary lip seal, generally used for sealing lubricating oil or grease in rotary shaft applications. Lip seals appeared at beginning of the 1900s and they are still unbeaten in many rotary and reciprocating applications.
European COMSOL Multiphysics Conference (Milan 2012)
Download for a better experience.
https://esp.comsol.com/paper/multiphysics-modeling-of-spring-supported-thrust-bearings-for-hydropower-applica-13019
6th International Conference on Machine Learning & Applications (CMLA 2024)ClaraZara1
6th International Conference on Machine Learning & Applications (CMLA 2024) will provide an excellent international forum for sharing knowledge and results in theory, methodology and applications of on Machine Learning & Applications.
NUMERICAL SIMULATIONS OF HEAT AND MASS TRANSFER IN CONDENSING HEAT EXCHANGERS...ssuser7dcef0
Power plants release a large amount of water vapor into the
atmosphere through the stack. The flue gas can be a potential
source for obtaining much needed cooling water for a power
plant. If a power plant could recover and reuse a portion of this
moisture, it could reduce its total cooling water intake
requirement. One of the most practical way to recover water
from flue gas is to use a condensing heat exchanger. The power
plant could also recover latent heat due to condensation as well
as sensible heat due to lowering the flue gas exit temperature.
Additionally, harmful acids released from the stack can be
reduced in a condensing heat exchanger by acid condensation. reduced in a condensing heat exchanger by acid condensation.
Condensation of vapors in flue gas is a complicated
phenomenon since heat and mass transfer of water vapor and
various acids simultaneously occur in the presence of noncondensable
gases such as nitrogen and oxygen. Design of a
condenser depends on the knowledge and understanding of the
heat and mass transfer processes. A computer program for
numerical simulations of water (H2O) and sulfuric acid (H2SO4)
condensation in a flue gas condensing heat exchanger was
developed using MATLAB. Governing equations based on
mass and energy balances for the system were derived to
predict variables such as flue gas exit temperature, cooling
water outlet temperature, mole fraction and condensation rates
of water and sulfuric acid vapors. The equations were solved
using an iterative solution technique with calculations of heat
and mass transfer coefficients and physical properties.
We have compiled the most important slides from each speaker's presentation. This year’s compilation, available for free, captures the key insights and contributions shared during the DfMAy 2024 conference.
NO1 Uk best vashikaran specialist in delhi vashikaran baba near me online vas...Amil Baba Dawood bangali
Contact with Dawood Bhai Just call on +92322-6382012 and we'll help you. We'll solve all your problems within 12 to 24 hours and with 101% guarantee and with astrology systematic. If you want to take any personal or professional advice then also you can call us on +92322-6382012 , ONLINE LOVE PROBLEM & Other all types of Daily Life Problem's.Then CALL or WHATSAPP us on +92322-6382012 and Get all these problems solutions here by Amil Baba DAWOOD BANGALI
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Forklift Classes Overview by Intella PartsIntella Parts
Discover the different forklift classes and their specific applications. Learn how to choose the right forklift for your needs to ensure safety, efficiency, and compliance in your operations.
For more technical information, visit our website https://intellaparts.com
HEAP SORT ILLUSTRATED WITH HEAPIFY, BUILD HEAP FOR DYNAMIC ARRAYS.
Heap sort is a comparison-based sorting technique based on Binary Heap data structure. It is similar to the selection sort where we first find the minimum element and place the minimum element at the beginning. Repeat the same process for the remaining elements.
Saudi Arabia stands as a titan in the global energy landscape, renowned for its abundant oil and gas resources. It's the largest exporter of petroleum and holds some of the world's most significant reserves. Let's delve into the top 10 oil and gas projects shaping Saudi Arabia's energy future in 2024.
Online aptitude test management system project report.pdfKamal Acharya
The purpose of on-line aptitude test system is to take online test in an efficient manner and no time wasting for checking the paper. The main objective of on-line aptitude test system is to efficiently evaluate the candidate thoroughly through a fully automated system that not only saves lot of time but also gives fast results. For students they give papers according to their convenience and time and there is no need of using extra thing like paper, pen etc. This can be used in educational institutions as well as in corporate world. Can be used anywhere any time as it is a web based application (user Location doesn’t matter). No restriction that examiner has to be present when the candidate takes the test.
Every time when lecturers/professors need to conduct examinations they have to sit down think about the questions and then create a whole new set of questions for each and every exam. In some cases the professor may want to give an open book online exam that is the student can take the exam any time anywhere, but the student might have to answer the questions in a limited time period. The professor may want to change the sequence of questions for every student. The problem that a student has is whenever a date for the exam is declared the student has to take it and there is no way he can take it at some other time. This project will create an interface for the examiner to create and store questions in a repository. It will also create an interface for the student to take examinations at his convenience and the questions and/or exams may be timed. Thereby creating an application which can be used by examiners and examinee’s simultaneously.
Examination System is very useful for Teachers/Professors. As in the teaching profession, you are responsible for writing question papers. In the conventional method, you write the question paper on paper, keep question papers separate from answers and all this information you have to keep in a locker to avoid unauthorized access. Using the Examination System you can create a question paper and everything will be written to a single exam file in encrypted format. You can set the General and Administrator password to avoid unauthorized access to your question paper. Every time you start the examination, the program shuffles all the questions and selects them randomly from the database, which reduces the chances of memorizing the questions.
Using recycled concrete aggregates (RCA) for pavements is crucial to achieving sustainability. Implementing RCA for new pavement can minimize carbon footprint, conserve natural resources, reduce harmful emissions, and lower life cycle costs. Compared to natural aggregate (NA), RCA pavement has fewer comprehensive studies and sustainability assessments.
Welcome to WIPAC Monthly the magazine brought to you by the LinkedIn Group Water Industry Process Automation & Control.
In this month's edition, along with this month's industry news to celebrate the 13 years since the group was created we have articles including
A case study of the used of Advanced Process Control at the Wastewater Treatment works at Lleida in Spain
A look back on an article on smart wastewater networks in order to see how the industry has measured up in the interim around the adoption of Digital Transformation in the Water Industry.
An Approach to Detecting Writing Styles Based on Clustering Techniquesambekarshweta25
An Approach to Detecting Writing Styles Based on Clustering Techniques
Authors:
-Devkinandan Jagtap
-Shweta Ambekar
-Harshit Singh
-Nakul Sharma (Assistant Professor)
Institution:
VIIT Pune, India
Abstract:
This paper proposes a system to differentiate between human-generated and AI-generated texts using stylometric analysis. The system analyzes text files and classifies writing styles by employing various clustering algorithms, such as k-means, k-means++, hierarchical, and DBSCAN. The effectiveness of these algorithms is measured using silhouette scores. The system successfully identifies distinct writing styles within documents, demonstrating its potential for plagiarism detection.
Introduction:
Stylometry, the study of linguistic and structural features in texts, is used for tasks like plagiarism detection, genre separation, and author verification. This paper leverages stylometric analysis to identify different writing styles and improve plagiarism detection methods.
Methodology:
The system includes data collection, preprocessing, feature extraction, dimensional reduction, machine learning models for clustering, and performance comparison using silhouette scores. Feature extraction focuses on lexical features, vocabulary richness, and readability scores. The study uses a small dataset of texts from various authors and employs algorithms like k-means, k-means++, hierarchical clustering, and DBSCAN for clustering.
Results:
Experiments show that the system effectively identifies writing styles, with silhouette scores indicating reasonable to strong clustering when k=2. As the number of clusters increases, the silhouette scores decrease, indicating a drop in accuracy. K-means and k-means++ perform similarly, while hierarchical clustering is less optimized.
Conclusion and Future Work:
The system works well for distinguishing writing styles with two clusters but becomes less accurate as the number of clusters increases. Future research could focus on adding more parameters and optimizing the methodology to improve accuracy with higher cluster values. This system can enhance existing plagiarism detection tools, especially in academic settings.
2. Tribological System
• What is the Coefficient of Friction of Stainless
Steel?
– The question makes no sense since friction is a
system variable. Friction is not a material
propriety.
– The whole tribological system needs to be
approached to address friction, wear or lubricity.
• How to define a tribology system? Which
variables are involved?
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3. Tribological System
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B) Interacting Components
a. Geometry
b. Material proprieties
c. Dependencies
d. Surface roughness
e. Surface hardness
C) Lubricant
a. Material proprieties
b. Dependencies
c. Availability
d. Debris and contaminants
A) Mechanism
a. Relative motion
b. Relative velocity
c. Load
d. Environment
4. Tribological System
4
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Tribology generally works on
the µm and MPa range.
It is advisable to start with a
kinematic and loading analysis
of the mechanism .
5. Tribological System
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A material can perform in an
absolutely different way when
running under different operating
conditions. Thoroughly defining the
operating range for the application is
a must.
6. Tribological System
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The viscosity of a lubricant
highly decreases with
temperature. Over speeding a
mechanism, for example, can
cause the thinning of the oil
layer leading to the destruction
of the components.
8. Static Seal
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Components geometry
Material Proprieties
- Housing
- Static seal
- Lubricant
- Sealed gases
Pressure difference Pa-Pb
Operating temperatures Ta , Tb , Tr , Ts
Surface Roughness Ss , Sr , Sh
9. Journal Bearing
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Shaft Rotational Speed v
Hydrostatic pressure Pa
Shaft-bush clearance ε
Operating temperatures Ta , Th , Ts
Shaft load Fshaft
Surface roughness Ss , Sh
Contaminants/Debris
Components geometry
Material Proprieties
- Shaft
- Housing
- Lubricant
10. Thrust Bearing
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Shaft Rotational Speed n
Shaft load Fshaft
Number of pads
Pivot point/line/springs location
Hydrostatic pressure Pa
Operating temperatures Ta, Tb , Th , Ts
Surface roughness Ss , Sr , Sh
Contaminants/Debris
Components geometry
Material Proprieties
- Collar
- Pad
- Babbitt
- Pad support
- Lubricant
11. Piston Rings
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Piston stroke
Number of piston rings
Reciprocating speed v
Pressure difference Pa-Pb
Shaft clearance ε
Operating temperatures Ta, Tb, Th, Ts
Rings energizers Fspring
Surface Roughness Ss, Sr, Sh
Contaminants/Debris
Components geometry
Material Proprieties
- Piston head
- Piston rings
- Piston rings energizers
- Cylinder
- Lubricant
12. Rotary Lip Seal
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Rotary peripheral speed nDπ/60
Pressure difference Pa-Pb
Garter spring force Fspring
Shaft eccentricity ε
Operating temperatures Ta , Tb , Th , Ts
Surface Roughness Ss , Sr , Sh
Contaminants/Debris
Components geometry
Material Proprieties
- Shaft
- Seal
- Reinforcement
- Garter spring
- Housing
- Lubricant
13. Ball Bearing
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Shaft Rotational Speed v
Hydrostatic pressure Pa
Shaft-bush clearance ε
Shaft load Fshaft
Operating temperatures Ta , Th , Ts, Tb
Surface roughness Ss , Sr , Sh , Sb
Contaminants/Debris
Components geometry
Material Proprieties
- Shaft
- Bush
- Housing
- Lubricant
14. Cam Follower
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Rotary peripheral speed
Spring force Fspring
Cam-Follower profile ε
Hydrostatic pressure Pa
Operating temperatures Ta , Th , Ts
Surface Roughness Ss , Sh
Contaminants/Debris
Components geometry
Material Proprieties
- Follower
- Cam shaft
- Lubricant
- Housing
15. Reciprocating Shaft Seal
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Components geometry
Material Proprieties
- Housing
- Shaft
- Lubricant
Piston stroke
Reciprocating speed v
Pressure difference Pa-Pb
Spring force Fspring
Shaft clearance ε
Operating temperatures Ta , Tb , Th , Ts
Surface Roughness Ss , Sr , Sh
16. Conclusions
• System variables such as friction, wear and lubricity
need the study of the whole tribo-system for its
correct assessment.
• There is a high dependency between the material
proprieties and the running conditions which
generally does not allow to independently study
particular aspects of the tribo-system.
• Novel measurement techniques and computational
models are nowadays developed allowing to predict
the overall performance.
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