High Performance Fibers- Aramid fibers- Their Spinning Techniques-Naveed Ahmed Fassana
A brief introduction of High Performance fibers and spinning techniques through which these fibers are produced are mentioned in these slides. Also there is a brief explanation of Aramid, Kevlar, and Nomex fibers with respect to their properties with the help of graphs etc.
High Performance Fibers- Aramid fibers- Their Spinning Techniques-Naveed Ahmed Fassana
A brief introduction of High Performance fibers and spinning techniques through which these fibers are produced are mentioned in these slides. Also there is a brief explanation of Aramid, Kevlar, and Nomex fibers with respect to their properties with the help of graphs etc.
to overcome the problem of easily fire catching to fabrics
it will reduce the wealth loss and causing material saving as well as it will cause healthy environment without sudden damage due to fire
chemicals treated are chlorine bromine , and also the bad effects of flame retardants
to overcome the problem of easily fire catching to fabrics
it will reduce the wealth loss and causing material saving as well as it will cause healthy environment without sudden damage due to fire
chemicals treated are chlorine bromine , and also the bad effects of flame retardants
Carbon fibers in automotive and aircraft applicationsrohannaik42
Carbon fibers have several advantages including high stiffness, high tensile strength, low weight, high chemical resistance, high temperature tolerance and low thermal expansion. These properties have made carbon fiber very popular in aerospace, civil engineering, military, and motor sports, along with other competition sports.
properties and application of technical textile fibersShahriar Shovon
Technical fiber or High functional fibers
High functional fibers are those, which have high technical properties based on the end uses. The properties are high tensile strength, high modulus, good chemical resistance, high dimensional stability, low thermal resistance.
Carbon Fibre is one of the most recent developments in the field of composite materials and is one of the strongest fibers known to man. It is usually the first choice of fibre if something very strong and very light is required.
Carbon fibre was originally developed in space technology, but has now been adopted in many other areas of manufacture. Racing car monocoques and aeroplane wings are usually constructed of carbon fibre.
With the decrease in its cost over recent years, it is fast becoming one of the leading materials in many areas, including performance sport equipment, transport, scientific experiments and even wallets and watches.
This presentation is about carbon fibre. Carbon fibre is a technical textile product. In this ppt, we have learnt about the history & introduction of carbon fibre and also morphology, properties, chemical structure, crystal structure, manufacturing process, future scope and some end use of carbon fibre.
The presentation encircles the following topics
1.Fibers and PlasticsTypes of fibers- Steel, Carbon, glass fibers, Use of fibers as construction material, properties of Fibers.
Types of plastics- PVC, RPVC, HDPE, FRP, GRP etc. Colored plastic sheets. Use of plastic as construction material.
2. Artificial Timbers – Properties and uses of artificial timber. Types of artificial timber available in market, strength of artificial timber.
3. Miscellaneous materials – Properties and uses of acoustics materials,wall claddings, plaster boards, micro-silica, artificial sand, bonding agents, adhesives
Prepared a Glass Fiber Reinforced Plastic board and determined the optimal drilling conditions that would cause the least delamination using Design of Experiments.
Composites are advanced materials which are playing vital role in modern day manufacturing. It is a modern research area with a lot of scope & potential for our modern manufacturing.
Safalta Digital marketing institute in Noida, provide complete applications that encompass a huge range of virtual advertising and marketing additives, which includes search engine optimization, virtual communication advertising, pay-per-click on marketing, content material advertising, internet analytics, and greater. These university courses are designed for students who possess a comprehensive understanding of virtual marketing strategies and attributes.Safalta Digital Marketing Institute in Noida is a first choice for young individuals or students who are looking to start their careers in the field of digital advertising. The institute gives specialized courses designed and certification.
for beginners, providing thorough training in areas such as SEO, digital communication marketing, and PPC training in Noida. After finishing the program, students receive the certifications recognised by top different universitie, setting a strong foundation for a successful career in digital marketing.
Introduction to AI for Nonprofits with Tapp NetworkTechSoup
Dive into the world of AI! Experts Jon Hill and Tareq Monaur will guide you through AI's role in enhancing nonprofit websites and basic marketing strategies, making it easy to understand and apply.
June 3, 2024 Anti-Semitism Letter Sent to MIT President Kornbluth and MIT Cor...Levi Shapiro
Letter from the Congress of the United States regarding Anti-Semitism sent June 3rd to MIT President Sally Kornbluth, MIT Corp Chair, Mark Gorenberg
Dear Dr. Kornbluth and Mr. Gorenberg,
The US House of Representatives is deeply concerned by ongoing and pervasive acts of antisemitic
harassment and intimidation at the Massachusetts Institute of Technology (MIT). Failing to act decisively to ensure a safe learning environment for all students would be a grave dereliction of your responsibilities as President of MIT and Chair of the MIT Corporation.
This Congress will not stand idly by and allow an environment hostile to Jewish students to persist. The House believes that your institution is in violation of Title VI of the Civil Rights Act, and the inability or
unwillingness to rectify this violation through action requires accountability.
Postsecondary education is a unique opportunity for students to learn and have their ideas and beliefs challenged. However, universities receiving hundreds of millions of federal funds annually have denied
students that opportunity and have been hijacked to become venues for the promotion of terrorism, antisemitic harassment and intimidation, unlawful encampments, and in some cases, assaults and riots.
The House of Representatives will not countenance the use of federal funds to indoctrinate students into hateful, antisemitic, anti-American supporters of terrorism. Investigations into campus antisemitism by the Committee on Education and the Workforce and the Committee on Ways and Means have been expanded into a Congress-wide probe across all relevant jurisdictions to address this national crisis. The undersigned Committees will conduct oversight into the use of federal funds at MIT and its learning environment under authorities granted to each Committee.
• The Committee on Education and the Workforce has been investigating your institution since December 7, 2023. The Committee has broad jurisdiction over postsecondary education, including its compliance with Title VI of the Civil Rights Act, campus safety concerns over disruptions to the learning environment, and the awarding of federal student aid under the Higher Education Act.
• The Committee on Oversight and Accountability is investigating the sources of funding and other support flowing to groups espousing pro-Hamas propaganda and engaged in antisemitic harassment and intimidation of students. The Committee on Oversight and Accountability is the principal oversight committee of the US House of Representatives and has broad authority to investigate “any matter” at “any time” under House Rule X.
• The Committee on Ways and Means has been investigating several universities since November 15, 2023, when the Committee held a hearing entitled From Ivory Towers to Dark Corners: Investigating the Nexus Between Antisemitism, Tax-Exempt Universities, and Terror Financing. The Committee followed the hearing with letters to those institutions on January 10, 202
Macroeconomics- Movie Location
This will be used as part of your Personal Professional Portfolio once graded.
Objective:
Prepare a presentation or a paper using research, basic comparative analysis, data organization and application of economic information. You will make an informed assessment of an economic climate outside of the United States to accomplish an entertainment industry objective.
Model Attribute Check Company Auto PropertyCeline George
In Odoo, the multi-company feature allows you to manage multiple companies within a single Odoo database instance. Each company can have its own configurations while still sharing common resources such as products, customers, and suppliers.
2024.06.01 Introducing a competency framework for languag learning materials ...Sandy Millin
http://sandymillin.wordpress.com/iateflwebinar2024
Published classroom materials form the basis of syllabuses, drive teacher professional development, and have a potentially huge influence on learners, teachers and education systems. All teachers also create their own materials, whether a few sentences on a blackboard, a highly-structured fully-realised online course, or anything in between. Despite this, the knowledge and skills needed to create effective language learning materials are rarely part of teacher training, and are mostly learnt by trial and error.
Knowledge and skills frameworks, generally called competency frameworks, for ELT teachers, trainers and managers have existed for a few years now. However, until I created one for my MA dissertation, there wasn’t one drawing together what we need to know and do to be able to effectively produce language learning materials.
This webinar will introduce you to my framework, highlighting the key competencies I identified from my research. It will also show how anybody involved in language teaching (any language, not just English!), teacher training, managing schools or developing language learning materials can benefit from using the framework.
Francesca Gottschalk - How can education support child empowerment.pptxEduSkills OECD
Francesca Gottschalk from the OECD’s Centre for Educational Research and Innovation presents at the Ask an Expert Webinar: How can education support child empowerment?
3. A 6 μm diameter carbon filament
compared to a human hair.
Composite Material
About 4.5 to 6.5 microns in diameter
In bundles, 5x as strong & 2x as stiff as steel
2/3 the weight of steel
Tensile Strength of 5.9 GPa
Tensile Modulus of 300 GPa
4 different weaves
About Carbon Fiber:
4. History of Carbon Fiber
1879, Thomas Edison experimented with carbon
fiber, using it as the filament for his light bulbs
1958, Roger Bacon discovered the tensile strength
of carbon fiber and was the first to create the modern
fiber with petroleum-based polymer
US Air force and NASA began using carbon fiber
for its applications to aircrafts and spacecrafts
5. Properties of CF
C fibers are close to asbestos in a number of properties
C fibers are made from many filaments a filament is a thin tube with a
diameter of 5–8 micrometers and consists almost exclusively of carbon
The atomic structure of carbon fiber is similar to that of graphite
carbon fiber may be turbostratic or graphitic, or have a hybrid
structure
carbon fibers derived from mesophase pitch are graphitic after heat
treatment at temperatures exceeding 2200 C
Turbostratic carbon fibers tend to have high tensile strength, whereas
heat-treated mesophase-pitch-derived carbon fibers have high Young's
modulus and high thermal conductivity.
Tensile strength (820,000 psi).
Modulus of elasticity (77,000,000 psi).
6. Fiber materials in fiber-reinforced
composites:
Glass – most widely used filament
Carbon – high elastic modulus
Boron – very high elastic modulus
Polymers - Kevlar
Ceramics – SiC and Al2O3
Metals - steel
The most important commercial use of
fibers is in polymer composites
7. High strength
High stiffness
Withstand temperatures to >2500oC
High strength/weight ratio
Tensile moduli range from 4x106 psi to 100x106 psi
8.
9. All commercial C.F.’s from 3 processes:
Polyacrylonitrile (PAN)
Rayon (cellulose)
Mesophase Petroleum Pitch
New method for discontinuous C.F.
Vapor Growth (high performance application)
15. Racing car chassis
Hoods
Car emblems
Mufflers
Interior panels of a car
Steering wheels
Parts and parts and
more parts
16. Carbon Fiber Reinforced
Polymer is can be applied to
reinforce concrete structures
The high strength of carbon
fiber enables it to be used as a
prestresser
High corrosion resistance
allows for use in offshore
environments
Used in PCCP lines to
reinforce the pipes
20. CF in different aspects of
Engineering
Aerospace Engineering
Mechanical Engineering
Civil Engineering
Reinforcing steel, cast iron, timber, and concrete to make
them stronger instead of retrofitting or destroying old
structures.
Wrapping it around columns will make the structure more
stronger with its tensile strengths. The less likely to collapse
because of the carbon fiber tightly holds the columns in
place.
21. Cost
From Tap Plastics
Epoxy : $25.95 for one pint
Carbon Fiber: $45/yard^2
Dragon plate online: 1/32” x 6” x 18”- $44.25
USD
Reasons for being so expensive
Not mass produced
Not enough demand
Every part needs to be customized
22. Where to buy it ?
Store in Santa Rosa
Tap Plastics on Santa Rosa Ave
•Online: Google carbon fiber
23. Safety Issues
Small pieces of carbon fibers can circulate in the air in the form
of a fine dust.
Industrial health studies have shown that, unlike some asbestos
fibers, carbon fibers are too large to be a health hazard when
inhaled.
They can be an irritant, however, and people working in the
area should wear protective masks.
24. Recycling
Milled Carbon was established in 2003 and Based in the U.K.
developed a system using pyrolysis, a method of incineration
that chemically decomposes materials by heating them in a near
oxygen-free atmosphere
In Milled Carbon’s process, incineration burns off all the resin
and additives, freeing the fiber reinforcement making it possible
to recover materials in substantially the same condition
the reclaimed carbon fibers are 99.9 percent pure
single fiber tests were conducted to compare virgin carbon-
fiber fabric with reclaimed fibers. Results indicate average
reduction in tensile strength of only 8.6 percent