Mumbai University
Mechanical engineering
SEM III
Material Technology
Module 1.4
Strain Hardening:
Definition importance of strain hardening, Dislocation theory of strain hardening, Effect of strain hardening on engineering behaviour of materials, Recrystallization Annealing: stages of recrystallization annealing and factors affecting it
Strengthening Mechanisms of Metals and alloysDEVINDA MAHASEN
In this presentation, I have explained 4 types of strengthening processes of metals.
Grain-size reduction
Solid-solution alloying
Strain hardening (work hardening or cold working)
Annealing of deformed metals
Unit-II Mechanical Testing
Subject Name: OML751 Testing of Materials
Topics: Various Mechanical Tests [Hardness, Tensile, Impact, Bend, Shear, Creep & Fatigue]
B.E. Mechanical Engineering
Final Year, VII Semester, Open Elective Subject
[As per Anna University R-2017]
Concept on hardness test conducted on materialAbir Hasan
Conceptual knowledge on hardness test performed on different types of material. Feel free to read and share with others. You may also find your desired presentation topics on my other slides.
Thank you.
METHOD OF HARDNESS MEASUREMENT:
There are two types of measurement of hardness of a compounds:
• Static indentation
• Rebound testing
STATIC INDENTATION:
• Static indentation involves pressing a ball diamond or other types of indenter under a specified constant load into surface of material and measuring the length width or depth of the indentation.
• The measured indentation size is then converted to a hardness number specified to the scale adopted.
• In general the harder the material the better the resistance and thus the smaller the indentation.
REBOUND TESTING:
• Rebound testing involves dropping an indenter o to the surface of specimen and measuring rebound height of the indenter.
• The potential energy at the initial height is converted to kinetic energy when the indenter is released.
• A fraction of the kinetic energy is consume for plastic deformation on impact living some kinetic energy after impact to convert back to potential energy and achieve a certain rebound height of the indenter.
• The rebound height the measure by the instrument is then converted to a hardness number.
Hard materials are difficult to cut and shape then softer ones. They are also usually more brittle which means that do not bend much but can shatter. Hard material are used in cutting tool machines and other industrial goods. Hardness test are important in material science. The MOHS scale of mineral hardness test the hardness of minerals. The Brinell scale and various compression tests and rebound test are more used for metals and artificial materials
This presentation is for mechanical engineering/ civil engineering students to help them understand the different type of destructive mechanical testing of materials. The tensile testing, hardness, impact test procedures are explained in detail.
Hardness measurement | Material Science and MetallurgyPeeyush Mishra
In this presentation, we are going to learn about hardness, hardness measurement, Brinell Hardness, Rockwell Hardness, Vicker's Hardness, Moh's hardness, etc
UNIT- V ---TESTING OF MECHANICAL PROPERTIES.pptxShanmathyAR2
TESTING OF MECHANICAL PROPERTIES
Mechanisms of plastic deformation, dislocation, slip and twinning – Types of fracture – Testing of materials under tension, compression and shear loads – Hardness tests: Brinell, Vickers and Rockwell – Impact test: Izod and Charpy, fatigue and creep test.
Mumbai University
Mechanical engineering
SEM III
Material Technology
Module 1.4
Strain Hardening:
Definition importance of strain hardening, Dislocation theory of strain hardening, Effect of strain hardening on engineering behaviour of materials, Recrystallization Annealing: stages of recrystallization annealing and factors affecting it
Strengthening Mechanisms of Metals and alloysDEVINDA MAHASEN
In this presentation, I have explained 4 types of strengthening processes of metals.
Grain-size reduction
Solid-solution alloying
Strain hardening (work hardening or cold working)
Annealing of deformed metals
Unit-II Mechanical Testing
Subject Name: OML751 Testing of Materials
Topics: Various Mechanical Tests [Hardness, Tensile, Impact, Bend, Shear, Creep & Fatigue]
B.E. Mechanical Engineering
Final Year, VII Semester, Open Elective Subject
[As per Anna University R-2017]
Concept on hardness test conducted on materialAbir Hasan
Conceptual knowledge on hardness test performed on different types of material. Feel free to read and share with others. You may also find your desired presentation topics on my other slides.
Thank you.
METHOD OF HARDNESS MEASUREMENT:
There are two types of measurement of hardness of a compounds:
• Static indentation
• Rebound testing
STATIC INDENTATION:
• Static indentation involves pressing a ball diamond or other types of indenter under a specified constant load into surface of material and measuring the length width or depth of the indentation.
• The measured indentation size is then converted to a hardness number specified to the scale adopted.
• In general the harder the material the better the resistance and thus the smaller the indentation.
REBOUND TESTING:
• Rebound testing involves dropping an indenter o to the surface of specimen and measuring rebound height of the indenter.
• The potential energy at the initial height is converted to kinetic energy when the indenter is released.
• A fraction of the kinetic energy is consume for plastic deformation on impact living some kinetic energy after impact to convert back to potential energy and achieve a certain rebound height of the indenter.
• The rebound height the measure by the instrument is then converted to a hardness number.
Hard materials are difficult to cut and shape then softer ones. They are also usually more brittle which means that do not bend much but can shatter. Hard material are used in cutting tool machines and other industrial goods. Hardness test are important in material science. The MOHS scale of mineral hardness test the hardness of minerals. The Brinell scale and various compression tests and rebound test are more used for metals and artificial materials
This presentation is for mechanical engineering/ civil engineering students to help them understand the different type of destructive mechanical testing of materials. The tensile testing, hardness, impact test procedures are explained in detail.
Hardness measurement | Material Science and MetallurgyPeeyush Mishra
In this presentation, we are going to learn about hardness, hardness measurement, Brinell Hardness, Rockwell Hardness, Vicker's Hardness, Moh's hardness, etc
UNIT- V ---TESTING OF MECHANICAL PROPERTIES.pptxShanmathyAR2
TESTING OF MECHANICAL PROPERTIES
Mechanisms of plastic deformation, dislocation, slip and twinning – Types of fracture – Testing of materials under tension, compression and shear loads – Hardness tests: Brinell, Vickers and Rockwell – Impact test: Izod and Charpy, fatigue and creep test.
Mechanisms of plastic deformation, dislocation, slip and twinning – Types of fracture – Testing of materials under tension, compression and shear loads – Hardness tests: Brinell, Vickers and Rockwell – Impact test: Izod and Charpy, fatigue and creep test.
Overview of the fundamental roles in Hydropower generation and the components involved in wider Electrical Engineering.
This paper presents the design and construction of hydroelectric dams from the hydrologist’s survey of the valley before construction, all aspects and involved disciplines, fluid dynamics, structural engineering, generation and mains frequency regulation to the very transmission of power through the network in the United Kingdom.
Author: Robbie Edward Sayers
Collaborators and co editors: Charlie Sims and Connor Healey.
(C) 2024 Robbie E. Sayers
Vaccine management system project report documentation..pdfKamal Acharya
The Division of Vaccine and Immunization is facing increasing difficulty monitoring vaccines and other commodities distribution once they have been distributed from the national stores. With the introduction of new vaccines, more challenges have been anticipated with this additions posing serious threat to the already over strained vaccine supply chain system in Kenya.
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.
Automobile Management System Project Report.pdfKamal Acharya
The proposed project is developed to manage the automobile in the automobile dealer company. The main module in this project is login, automobile management, customer management, sales, complaints and reports. The first module is the login. The automobile showroom owner should login to the project for usage. The username and password are verified and if it is correct, next form opens. If the username and password are not correct, it shows the error message.
When a customer search for a automobile, if the automobile is available, they will be taken to a page that shows the details of the automobile including automobile name, automobile ID, quantity, price etc. “Automobile Management System” is useful for maintaining automobiles, customers effectively and hence helps for establishing good relation between customer and automobile organization. It contains various customized modules for effectively maintaining automobiles and stock information accurately and safely.
When the automobile is sold to the customer, stock will be reduced automatically. When a new purchase is made, stock will be increased automatically. While selecting automobiles for sale, the proposed software will automatically check for total number of available stock of that particular item, if the total stock of that particular item is less than 5, software will notify the user to purchase the particular item.
Also when the user tries to sale items which are not in stock, the system will prompt the user that the stock is not enough. Customers of this system can search for a automobile; can purchase a automobile easily by selecting fast. On the other hand the stock of automobiles can be maintained perfectly by the automobile shop manager overcoming the drawbacks of existing system.
Final project report on grocery store management system..pdfKamal Acharya
In today’s fast-changing business environment, it’s extremely important to be able to respond to client needs in the most effective and timely manner. If your customers wish to see your business online and have instant access to your products or services.
Online Grocery Store is an e-commerce website, which retails various grocery products. This project allows viewing various products available enables registered users to purchase desired products instantly using Paytm, UPI payment processor (Instant Pay) and also can place order by using Cash on Delivery (Pay Later) option. This project provides an easy access to Administrators and Managers to view orders placed using Pay Later and Instant Pay options.
In order to develop an e-commerce website, a number of Technologies must be studied and understood. These include multi-tiered architecture, server and client-side scripting techniques, implementation technologies, programming language (such as PHP, HTML, CSS, JavaScript) and MySQL relational databases. This is a project with the objective to develop a basic website where a consumer is provided with a shopping cart website and also to know about the technologies used to develop such a website.
This document will discuss each of the underlying technologies to create and implement an e- commerce website.
Democratizing Fuzzing at Scale by Abhishek Aryaabh.arya
Presented at NUS: Fuzzing and Software Security Summer School 2024
This keynote talks about the democratization of fuzzing at scale, highlighting the collaboration between open source communities, academia, and industry to advance the field of fuzzing. It delves into the history of fuzzing, the development of scalable fuzzing platforms, and the empowerment of community-driven research. The talk will further discuss recent advancements leveraging AI/ML and offer insights into the future evolution of the fuzzing landscape.
Hybrid optimization of pumped hydro system and solar- Engr. Abdul-Azeez.pdffxintegritypublishin
Advancements in technology unveil a myriad of electrical and electronic breakthroughs geared towards efficiently harnessing limited resources to meet human energy demands. The optimization of hybrid solar PV panels and pumped hydro energy supply systems plays a pivotal role in utilizing natural resources effectively. This initiative not only benefits humanity but also fosters environmental sustainability. The study investigated the design optimization of these hybrid systems, focusing on understanding solar radiation patterns, identifying geographical influences on solar radiation, formulating a mathematical model for system optimization, and determining the optimal configuration of PV panels and pumped hydro storage. Through a comparative analysis approach and eight weeks of data collection, the study addressed key research questions related to solar radiation patterns and optimal system design. The findings highlighted regions with heightened solar radiation levels, showcasing substantial potential for power generation and emphasizing the system's efficiency. Optimizing system design significantly boosted power generation, promoted renewable energy utilization, and enhanced energy storage capacity. The study underscored the benefits of optimizing hybrid solar PV panels and pumped hydro energy supply systems for sustainable energy usage. Optimizing the design of solar PV panels and pumped hydro energy supply systems as examined across diverse climatic conditions in a developing country, not only enhances power generation but also improves the integration of renewable energy sources and boosts energy storage capacities, particularly beneficial for less economically prosperous regions. Additionally, the study provides valuable insights for advancing energy research in economically viable areas. Recommendations included conducting site-specific assessments, utilizing advanced modeling tools, implementing regular maintenance protocols, and enhancing communication among system components.
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
18. Pure Shear force
• A pure shear force
applied top and bottom
parallel to its faces
• Double shear system
used to measure the
shear stress and shear
strain.
20. Limitations of shear test
• Need attachment with UTM machine .
• Material at last gets bend
• So we will get the bending stress also, not the
pure shear type.
• Very difficult in processing
36. Highlights
• In this test , the dial gives the direct reading of
hardness; no need of measuring indentation
diameter or diagonal length using the microscope
40. advantages
• Simple
• Reading taken directly
• Time consuming process
• Suitable for mass production
• We can measure any range of value with
various indenters.
• Metallic and also plastics used
46. IZOD TEST
Izod test uses cantilever specimen of
size 75mm×10mm×10mm.
The V-notch angle is450 and depth of
the notch is 2mm.
The Izod specimen is placed in the vise
such that it is a cantilever.
52. Creep test
• The continuous deformation of a metal under
a steady load is known as creep.
• The purpose of creep tests is to determine the
creep limit.
• The creep limit or the limiting creep stress is
defined as the stress that will not break the
specimen when applied for an infinite period
at a specific constant temperature.
53.
54.
55. BASIC REQUIREMENTS FOR CREEP TEST
• It must posses means for applying and
maintaining a constant load
• There must be a furnace capable of keeping
the temperature of the test- piece at the
desired value to within very close limits.
• There should be means for the measurement
of test- piece extension.
