Plastic welding is a process that joins thermoplastic materials like polyethylene and polypropylene by heating them until they soften and fuse together. There are different types of plastic welding classified by their heating method, such as hot gas welding, laser welding, hot plate welding, and ultrasonic welding. Plastic welding has advantages like producing strong, air tight welds and being a fast and clean process, but also has disadvantages such as the weld being permanent and some processes being relatively slow. Plastic welding has applications in automotive parts, sensors, and other areas.
The presentations helps us to understand about plastic welding and its different classifications. Further it gives a brief idea about the various industrial applications and latest developments in this field.
The presentations helps us to understand about plastic welding and its different classifications. Further it gives a brief idea about the various industrial applications and latest developments in this field.
Here I have explained theoretical view of ultrasonic welding and its applications in real world.
In addition to that, advantages and disadvantages of this process also discussed.
It is a near net shape process in which casting and forging is done in single step.
It is Referred by many names such as “squeeze casting” , “pressure infiltration”, “liquid metal forging”, “extrusion casting”, “liquid pressing'', “pressure crystallization”.
One of the welding processes that used in Engineering field is the electrogas welding. There are several types of welding processes similar to this, but electrogas welding has its unique features.
Thanks for the colleagues who give this slides to publish.
friction stir welding is a joining process that has exhibited many advantages over traditional welding process including greatly reducing distortion and eliminating solidification. In this process welding using fiction as the major resource, due to the frictional heating & Mechanical deformation
FRICTION STIR WELDING is a very latest tchnology of welding process .Its a green method of solid state joining, and also a defect free method .
To know more about this you can also watch this animation https://youtu.be/kEEST5cgOao
Here I have explained theoretical view of ultrasonic welding and its applications in real world.
In addition to that, advantages and disadvantages of this process also discussed.
It is a near net shape process in which casting and forging is done in single step.
It is Referred by many names such as “squeeze casting” , “pressure infiltration”, “liquid metal forging”, “extrusion casting”, “liquid pressing'', “pressure crystallization”.
One of the welding processes that used in Engineering field is the electrogas welding. There are several types of welding processes similar to this, but electrogas welding has its unique features.
Thanks for the colleagues who give this slides to publish.
friction stir welding is a joining process that has exhibited many advantages over traditional welding process including greatly reducing distortion and eliminating solidification. In this process welding using fiction as the major resource, due to the frictional heating & Mechanical deformation
FRICTION STIR WELDING is a very latest tchnology of welding process .Its a green method of solid state joining, and also a defect free method .
To know more about this you can also watch this animation https://youtu.be/kEEST5cgOao
Heat welding of plastics. Welding can join thermoplastic parts together. It can be by melting the surfaces and pressing them together or by extrusion welding with a filler rod. Several methods of welding are available. Proper manual techniques are critical to success as is the pressure testing of pressure parts.
Student information management system project report ii.pdfKamal Acharya
Our project explains about the student management. This project mainly explains the various actions related to student details. This project shows some ease in adding, editing and deleting the student details. It also provides a less time consuming process for viewing, adding, editing and deleting the marks of the students.
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.
CFD Simulation of By-pass Flow in a HRSG module by R&R Consult.pptxR&R Consult
CFD analysis is incredibly effective at solving mysteries and improving the performance of complex systems!
Here's a great example: At a large natural gas-fired power plant, where they use waste heat to generate steam and energy, they were puzzled that their boiler wasn't producing as much steam as expected.
R&R and Tetra Engineering Group Inc. were asked to solve the issue with reduced steam production.
An inspection had shown that a significant amount of hot flue gas was bypassing the boiler tubes, where the heat was supposed to be transferred.
R&R Consult conducted a CFD analysis, which revealed that 6.3% of the flue gas was bypassing the boiler tubes without transferring heat. The analysis also showed that the flue gas was instead being directed along the sides of the boiler and between the modules that were supposed to capture the heat. This was the cause of the reduced performance.
Based on our results, Tetra Engineering installed covering plates to reduce the bypass flow. This improved the boiler's performance and increased electricity production.
It is always satisfying when we can help solve complex challenges like this. Do your systems also need a check-up or optimization? Give us a call!
Work done in cooperation with James Malloy and David Moelling from Tetra Engineering.
More examples of our work https://www.r-r-consult.dk/en/cases-en/
Immunizing Image Classifiers Against Localized Adversary Attacksgerogepatton
This paper addresses the vulnerability of deep learning models, particularly convolutional neural networks
(CNN)s, to adversarial attacks and presents a proactive training technique designed to counter them. We
introduce a novel volumization algorithm, which transforms 2D images into 3D volumetric representations.
When combined with 3D convolution and deep curriculum learning optimization (CLO), itsignificantly improves
the immunity of models against localized universal attacks by up to 40%. We evaluate our proposed approach
using contemporary CNN architectures and the modified Canadian Institute for Advanced Research (CIFAR-10
and CIFAR-100) and ImageNet Large Scale Visual Recognition Challenge (ILSVRC12) datasets, showcasing
accuracy improvements over previous techniques. The results indicate that the combination of the volumetric
input and curriculum learning holds significant promise for mitigating adversarial attacks without necessitating
adversary training.
TECHNICAL TRAINING MANUAL GENERAL FAMILIARIZATION COURSEDuvanRamosGarzon1
AIRCRAFT GENERAL
The Single Aisle is the most advanced family aircraft in service today, with fly-by-wire flight controls.
The A318, A319, A320 and A321 are twin-engine subsonic medium range aircraft.
The family offers a choice of engines
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
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.
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
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.
Water scarcity is the lack of fresh water resources to meet the standard water demand. There are two type of water scarcity. One is physical. The other is economic water scarcity.
Industrial Training at Shahjalal Fertilizer Company Limited (SFCL)MdTanvirMahtab2
This presentation is about the working procedure of Shahjalal Fertilizer Company Limited (SFCL). A Govt. owned Company of Bangladesh Chemical Industries Corporation under Ministry of Industries.
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.
2. CONTENTS
What is plastic welding
Classification of Plastic Welding
Types of plastic welding
Advantages Of Plastic Welding
Disadvantages Of Plastic
Welding
Application Of Plastic Welding
3. PLASTIC WELDING
Plastic welding is the process of uniting softened
surfaces of materials, generally with the aid of heat.
Welding can be used to produce bonded joints with
mechanical properties that approach to those of
parent material.
Polyethylene, Polypropylene, Polyvinyl Chloride,
Polyurethane and Acrylonitrile Butadiene Styrene
(ABS) are frequently used in plastic welding.
Plasticsthat can be welded are called
"thermoplastics" and when they are heated to a
sufficiently high temperature they will soften and
welded.
4.
5. CLASSIFICATION OF PLASTIC WELDING
Welding process are categorized by the heating method that is used. Two general
categories are
1. External heating 2. Internal heating
External heating:
• It rely on convection & conduction to heat the weld surface.
• Hot tool, hot gas, extrusion, implant induction, implant resistancewelding
Internal heating:
• It rely on conversion of mechanical energy into heat through surface
frictionFurther divided into internal mechanical, Internal electromagnetic heating
• Ultrasonic , Friction, Laser, RF welding.
6. TYPES OF PLASTIC WELDING
1. HOT GAS PLASTIC WELDING
2. LASER WELDING
3. HOT PLATE PLASTIC WELDING
4. ULTRASONIC PLASTIC
WELDING
5. FRICTION WELDING
7. HOT GAS PLASTIC WELDING
Hot gas welding is a
fabrication process for
thermoplastic materials.
The process uses a
stream of heated gas
usually air to heat and
melt the thermoplastic
welding rod.
9. LASER WELDING
.
1. Laser plastic welding is a
process of bonding plastic
using focused laser radiation.
2. In this process laser light is
turned into heat energy. The
heat created at the interface a
molten weld, plastic are fused.
10. HOT PLATE PLASTIC WELDING
• Hot plate welding is a thermal
welding technique capable of
producing strong, air tight welds
in thermoplastic parts.
• When using thermal energy in
tightly controlled manner,
thermoplastic parts can be
heated to molten temperature
very quickly and then joined
together.
11.
12. • Ultrasonic plastic welding is the joining
thermoplastic through the use of heat
generated from high frequency mechanical
motion.
• It is the process in which high frequency
electrical energy into high frequency
mechanical motion.
• The mechanical motion along with applied
force creates frictional heat at the plastic
components.
ULTRASONIC PLASTIC WELDING
13. Friction welding is the
process that generates
heat through
mechanical friction
between workpieces in
relative motion to one
another.
FRICTION WELDING
14. • Very fast process.
• Very clean process, little to no weld
flash. Relatively low cost of
equipments.
• A weld is permanent, which prevents
tampering with the internal
components.Plastic welds are much
lighter than mechanical fasteners.
• High quality welding for a wide range
ofthermoplastic.
ADVANTAGES OF PLASTIC WELDING
15. DISADVANTAGES OF PLASTIC WELDING
• A weld is permanent , the
part will never be able to be
opened and resealed in the
same way.
• Hot plate welding process is
relatively slow.Hot polymer
melt often sticks to the hot
plate surface. High capital
cost is required vibration
welding (equipment and
fixture)
16. APPLICATIONS
• Hot plate welding is a very inexpensive
process in which we use handheld
devices to bond less.
• Friction welding is also inexpensive
process using low maintenance
machinery and low cycle time.
• Laser plastic welding is ideal for welding
in sensor housing tail lights and
manifolds in the automotive industry.
