This document discusses different methods for measuring the density of fibers, which is important for textile manufacturing and quality control. It defines density as the ratio of mass to volume and explains that density measurement can indicate the degree of order or crystallinity of fibers. Several techniques for measuring fiber density are described, including using a displacement method with liquid, a floatation method using liquid mixtures, and a density gradient tube method using liquids of varying densities. Calibration methods and example densities of common fibers are also provided.
Textile Testing & Quality Control (TTQC) is very important work or process in each department of export oriented industry. Buyers want quality but not quantity. In every department of textile industry quality maintained of each material, Because one material’s quality depend on another’s quality. For example, if qualified fiber is inputted then output will be good yarn.
Textile Testing & Quality Control (TTQC) is very important work or process in each department of export oriented industry. Buyers want quality but not quantity. In every department of textile industry quality maintained of each material, Because one material’s quality depend on another’s quality. For example, if qualified fiber is inputted then output will be good yarn.
TOPICS COVERED: ASOLUTE AND RELATIVE HUMIDITY MOISTURE REGAIN AND CONTENT Regain-Humidity Relations of Textiles Regain VS Relative Humidity Curve Factors Affecting the Regain of Textile Materials Effect of moisture on properties
Drawframe is one of the important machines in yarn spinning line. It is prepared for combining and drawing slivers and removing card irregularities of textile fibres.
Before weaving, sizing of yarns are very important. During weaving the yarns experience heavy pressure, so in some cases, they may break. So sizing is necessary for improving the strength of yarns.
TOPICS COVERED: ASOLUTE AND RELATIVE HUMIDITY MOISTURE REGAIN AND CONTENT Regain-Humidity Relations of Textiles Regain VS Relative Humidity Curve Factors Affecting the Regain of Textile Materials Effect of moisture on properties
Drawframe is one of the important machines in yarn spinning line. It is prepared for combining and drawing slivers and removing card irregularities of textile fibres.
Before weaving, sizing of yarns are very important. During weaving the yarns experience heavy pressure, so in some cases, they may break. So sizing is necessary for improving the strength of yarns.
LARGE SCALE INSTALLATION OF SUBSURFACE DRAINAGE SYSTEM Tushar Dholakia
LARGE SCALE INSTALLATION OF SUBSURFACE DRAINAGE SYSTEM in Chambal Command, Rajasthan - Er. C.M. Tejawat, F.I.E., P. Eng., B.E. (Ag.), M.Sc. (Land Drainage Engineering) Deputy Director (Monitoring), CAD Chambal, Kota (Raj.)
The Role of Drainage Depth and Intensity on Hydrology and Nutrient Loss In th...LPE Learning Center
For more: http://www.extension.org/67691 Water management in the crop root-zone is crucial to successful crop growth and production. Irrigation, surface, and subsurface drainage—and other practices—are routinely implemented throughout the world to improve crop productivity and working conditions of the soil. Water management practices also impact the environmental footprint of agricultural systems by affecting the flow of water, nutrients, sediment, and other constituents through field, farms, and watersheds. Water management practices for agriculture in the Midwestern US should be designed with both profitability and the environment in mind. The design of subsurface (tile) drainage systems has traditionally been more a matter of how much drainage one can afford, rather than the aforementioned objectives. The relationship among subsurface drainage design characteristics (depth, spacing, layout), farm profitability, and environmental impact are not well known at the farm scale. Thus, drainage system design may fail to meet one or more of these important objectives. This presentation will examine the effects of subsurface drainage system design criteria on productivity, profitability, and the environment, using the soils and climatic conditions of the northern corn-belt (southern Minnesota). Water management in the crop root-zone is crucial to successful crop growth and production. Irrigation, surface, and subsurface drainage—and other practices—are routinely implemented throughout the world to improve crop productivity and working conditions of the soil. Water management practices also impact the environmental footprint of agricultural systems by affecting the flow of water, nutrients, sediment, and other constituents through field, farms, and watersheds. Water management practices for agriculture in the Midwestern US should be designed with both profitability and the environment in mind. The design of subsurface (tile) drainage systems has traditionally been more a matter of how much drainage one can afford, rather than the aforementioned objectives. The relationship among subsurface drainage design characteristics (depth, spacing, layout), farm profitability, and environmental impact are not well known at the farm scale. Thus, drainage system design may fail to meet one or more of these important objectives. This presentation will examine the effects of subsurface drainage system design criteria on productivity, profitability, and the environment, using the soils and climatic conditions of the northern corn-belt (southern Minnesota).
importance of fibre finess,influences of fibre finess ,effect on stiffness , effect on torsional rigidity, reflection of light , dye absoprtion, method of measurement ,gravimetric method, micronaire
It may be define as a process of separation of solids from a fluid by passing the same through a porous medium that retains the solids but allows the fluid to pass through.
When solid are present in very low concentration, i.e., not exceeding 1.0% w/v, the process of its separation from liquid is called clarification.
a complete description of the particle size distribution of particles in different categories. Sedimentation is a phenomenon that completely work with the size of particles.
This presentation gives insight on history of man made fibers, types and classification, crystallinity, structural models of fibers, molecular weight distribution, application of man made fibers and global synthetic fiber market.
fiber strength and fiber fineness are described in detail about the machinery and discussed about new computerized testing machines which are used to determine the strength and fineness of the fiber.
Taurus Zodiac Sign_ Personality Traits and Sign Dates.pptxmy Pandit
Explore the world of the Taurus zodiac sign. Learn about their stability, determination, and appreciation for beauty. Discover how Taureans' grounded nature and hardworking mindset define their unique personality.
The world of search engine optimization (SEO) is buzzing with discussions after Google confirmed that around 2,500 leaked internal documents related to its Search feature are indeed authentic. The revelation has sparked significant concerns within the SEO community. The leaked documents were initially reported by SEO experts Rand Fishkin and Mike King, igniting widespread analysis and discourse. For More Info:- https://news.arihantwebtech.com/search-disrupted-googles-leaked-documents-rock-the-seo-world/
[Note: This is a partial preview. To download this presentation, visit:
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Sustainability has become an increasingly critical topic as the world recognizes the need to protect our planet and its resources for future generations. Sustainability means meeting our current needs without compromising the ability of future generations to meet theirs. It involves long-term planning and consideration of the consequences of our actions. The goal is to create strategies that ensure the long-term viability of People, Planet, and Profit.
Leading companies such as Nike, Toyota, and Siemens are prioritizing sustainable innovation in their business models, setting an example for others to follow. In this Sustainability training presentation, you will learn key concepts, principles, and practices of sustainability applicable across industries. This training aims to create awareness and educate employees, senior executives, consultants, and other key stakeholders, including investors, policymakers, and supply chain partners, on the importance and implementation of sustainability.
LEARNING OBJECTIVES
1. Develop a comprehensive understanding of the fundamental principles and concepts that form the foundation of sustainability within corporate environments.
2. Explore the sustainability implementation model, focusing on effective measures and reporting strategies to track and communicate sustainability efforts.
3. Identify and define best practices and critical success factors essential for achieving sustainability goals within organizations.
CONTENTS
1. Introduction and Key Concepts of Sustainability
2. Principles and Practices of Sustainability
3. Measures and Reporting in Sustainability
4. Sustainability Implementation & Best Practices
To download the complete presentation, visit: https://www.oeconsulting.com.sg/training-presentations
What are the main advantages of using HR recruiter services.pdfHumanResourceDimensi1
HR recruiter services offer top talents to companies according to their specific needs. They handle all recruitment tasks from job posting to onboarding and help companies concentrate on their business growth. With their expertise and years of experience, they streamline the hiring process and save time and resources for the company.
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Putting the SPARK into Virtual Training.pptxCynthia Clay
This 60-minute webinar, sponsored by Adobe, was delivered for the Training Mag Network. It explored the five elements of SPARK: Storytelling, Purpose, Action, Relationships, and Kudos. Knowing how to tell a well-structured story is key to building long-term memory. Stating a clear purpose that doesn't take away from the discovery learning process is critical. Ensuring that people move from theory to practical application is imperative. Creating strong social learning is the key to commitment and engagement. Validating and affirming participants' comments is the way to create a positive learning environment.
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Enterprise excellence and inclusive excellence are closely linked, and real-world challenges have shown that both are essential to the success of any organization. To achieve enterprise excellence, organizations must focus on improving their operations and processes while creating an inclusive environment that engages everyone. In this interactive session, the facilitator will highlight commonly established business practices and how they limit our ability to engage everyone every day. More importantly, though, participants will likely gain increased awareness of what we can do differently to maximize enterprise excellence through deliberate inclusion.
What is Enterprise Excellence?
Enterprise Excellence is a holistic approach that's aimed at achieving world-class performance across all aspects of the organization.
What might I learn?
A way to engage all in creating Inclusive Excellence. Lessons from the US military and their parallels to the story of Harry Potter. How belt systems and CI teams can destroy inclusive practices. How leadership language invites people to the party. There are three things leaders can do to engage everyone every day: maximizing psychological safety to create environments where folks learn, contribute, and challenge the status quo.
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Dr. William Harvey is a seasoned Operations Leader with extensive experience in chemical processing, manufacturing, and operations management. At Michelman, he currently oversees multiple sites, leading teams in strategic planning and coaching/practicing continuous improvement. William is set to start his eighth year of teaching at the University of Cincinnati where he teaches marketing, finance, and management. William holds various certifications in change management, quality, leadership, operational excellence, team building, and DiSC, among others.
Cracking the Workplace Discipline Code Main.pptxWorkforce Group
Cultivating and maintaining discipline within teams is a critical differentiator for successful organisations.
Forward-thinking leaders and business managers understand the impact that discipline has on organisational success. A disciplined workforce operates with clarity, focus, and a shared understanding of expectations, ultimately driving better results, optimising productivity, and facilitating seamless collaboration.
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In this deck, you will learn the significance of workplace discipline for organisational success. You’ll also learn
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Remote sensing and monitoring are changing the mining industry for the better. These are providing innovative solutions to long-standing challenges. Those related to exploration, extraction, and overall environmental management by mining technology companies Odisha. These technologies make use of satellite imaging, aerial photography and sensors to collect data that might be inaccessible or from hazardous locations. With the use of this technology, mining operations are becoming increasingly efficient. Let us gain more insight into the key aspects associated with remote sensing and monitoring when it comes to mining.
Memorandum Of Association Constitution of Company.pptseri bangash
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A Memorandum of Association (MOA) is a legal document that outlines the fundamental principles and objectives upon which a company operates. It serves as the company's charter or constitution and defines the scope of its activities. Here's a detailed note on the MOA:
Contents of Memorandum of Association:
Name Clause: This clause states the name of the company, which should end with words like "Limited" or "Ltd." for a public limited company and "Private Limited" or "Pvt. Ltd." for a private limited company.
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Registered Office Clause: It specifies the location where the company's registered office is situated. This office is where all official communications and notices are sent.
Objective Clause: This clause delineates the main objectives for which the company is formed. It's important to define these objectives clearly, as the company cannot undertake activities beyond those mentioned in this clause.
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Liability Clause: It outlines the extent of liability of the company's members. In the case of companies limited by shares, the liability of members is limited to the amount unpaid on their shares. For companies limited by guarantee, members' liability is limited to the amount they undertake to contribute if the company is wound up.
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Capital Clause: This clause specifies the authorized capital of the company, i.e., the maximum amount of share capital the company is authorized to issue. It also mentions the division of this capital into shares and their respective nominal value.
Association Clause: It simply states that the subscribers wish to form a company and agree to become members of it, in accordance with the terms of the MOA.
Importance of Memorandum of Association:
Legal Requirement: The MOA is a legal requirement for the formation of a company. It must be filed with the Registrar of Companies during the incorporation process.
Constitutional Document: It serves as the company's constitutional document, defining its scope, powers, and limitations.
Protection of Members: It protects the interests of the company's members by clearly defining the objectives and limiting their liability.
External Communication: It provides clarity to external parties, such as investors, creditors, and regulatory authorities, regarding the company's objectives and powers.
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Binding Authority: The company and its members are bound by the provisions of the MOA. Any action taken beyond its scope may be considered ultra vires (beyond the powers) of the company and therefore void.
Amendment of MOA:
While the MOA lays down the company's fundamental principles, it is not entirely immutable. It can be amended, but only under specific circumstances and in compliance with legal procedures. Amendments typically require shareholder
3. DENSITYDENSITY
Density is the measure of the
“compactness” of a material
How close the atoms or molecules are to
each other
More than “heaviness” - density includes
how much space an object takes up.
All substances have density including
liquids, solids, and gases
5. DENSITYDENSITY
What is Density?
If you take the same volume of different substances, then
they will weigh different amounts.
1 cm3
Iron has the greatest mass and therefore the most dense
Wood
0.50 g
Water
1 cm3
1.00 g
Iron
1 cm3
8.00 g IRON
6. DENSITYDENSITY
D = m/v (g/cm3
)
Mass usually expressed in grams
Volume usually expressed in cm3
or liters,
etc.
7. DENSITYDENSITY
Density = amount of matter per unit volume
Density is the ratio of mass to volume
If the volume stays the same and the
mass increases . . . the density will
increase
If the mass stays the same and the
volume increases . . . The density will
decrease
8. FIBRE DENSITYFIBRE DENSITY
Fibre density plays a direct part in affecting the weight of
fabrics, so that glass fabrics, with a fibre density of 2.56, will
tend to be heavy, whereas those of polyethylene, with a
density of 0.92 will be light.
Fibre density is a useful parameter in fabric identification and
occurs incidentally in many parts of textile physics.
For some purposes, it is more convenient to use specific
volume, which is the reciprocal of density and is expressed in
cubic centimeters per gram.
9. FIBRE DENSITY MEASUREMENT – Simple MethodFIBRE DENSITY MEASUREMENT – Simple Method
ρ = m = 01 =10.0 g/cm3
V 0.1
* Find the Mass of the fibre on a* Find the Mass of the fibre on a
balance.balance.
* Fill the Measuring Cylinder with* Fill the Measuring Cylinder with
liquid to a known Volume.liquid to a known Volume.
* Add the Object.* Add the Object.
* Work out the Volume of liquid* Work out the Volume of liquid
that is displaced.that is displaced.
*Calculate the Density based on*Calculate the Density based on
displacement of the level of liquiddisplacement of the level of liquid
in a measuring cylinder equals thein a measuring cylinder equals the
volume of the added fibres.volume of the added fibres.
0.1 cm3
0.2 cm3
m =1g
10. FIBRE DENSITY MEASUREMENT – Simple MethodFIBRE DENSITY MEASUREMENT – Simple Method
Two fundamental forces of error are immediately obvious.
Firstly, the liquid may not displace all the air particularly from
crevices in the fibre surface. This means that the measured
volume will be too high and the density too low.
Secondly, the liquid may be absorbed by the fibres, which
results in a smaller displacement of the liquid level. This
would give too low a volume and too high a density.
It is now generally accepted that the best values of density
are obtained with a large number of organic liquids such as
nitrobenzene, olive oil, toluene,benzene and CTC.
This method is sound in principle, but it would not be very
accurate in practice.
11. FIBRE DENSITY MEASUREMENT – Floatation MethodFIBRE DENSITY MEASUREMENT – Floatation Method
This method was developed by Abbott and Goodings.
This method is prefered for single fibre or small bundles of fibres.
The chopped-up fibres are placed in a liquid (or a mixture of liquids)
of the same density as the fibres, and then centrifuge in a tube, they
remain as a uniform cloud.
If the densities are different, they will be accumulated into a single
group, which floated if the fibre density is the lower and sank if it is
the greater.
By a process of trial and error, the correct density can be calculated.
Note :
Centrifuge means : a machine with a rapidly rotating
container that applies centrifugal force to its contents,
typically to separate fluids of different...
12. FIBRE DENSITY MEASUREMENT – Density Gradient Tube MethodFIBRE DENSITY MEASUREMENT – Density Gradient Tube Method
In this method a long tube called density gradient tube
containing a heavy liquid (Eg. Pentacholoethane,1.7g/cm3) at
the bottom, a light liquid (eg. Xylol, 0.9 g/cm3) at the top, and
a continuously varying mixture of the two between them.
If the fibres dropped in, they sink to the point at which the
fibre density equals the liquid density and remain suspended
there.
Calibration of the tube may be provided either by means of
pieces of different materials of known densities floating at
their appropriate levels or by hollow glass spheres of varrying
mean density.
The fibre density can be found by interpolation between the
known densities on either side of the position at which the
fibres come to rest.
13. FIBRE DENSITY MEASUREMENTFIBRE DENSITY MEASUREMENT
In Textile Industry QC dept is responsible to carried out
various types of quality test. Density test is one of them.
Density is important for fabric manufacturing.
Density of a textile fiber is important to know.Density is
mreasured by the following steps. Density gradient is
prepared as the following.
* Clamp the density gradient glass in a firm vertical stand.
* Pour into the tube 25 ml of tetrochloroethylene.
* Now prepare mixture of xylene and tetrachloroethylene
in
descending order of percent tetrachloroethylene
90/10,80/20,70/30,60/40,50/50,40/60,30/70,20/80 and
10/90.
* Pour 25ml of each in order carefully down the side of the
gradient tube.
* Finally put 25 ml of xylene on top.
14. FIBRE DENSITY MEASUREMENTFIBRE DENSITY MEASUREMENT
* Take short fragments of dyed reference fibres and tie in a
knot snipping off loose ends.
* Boil for 2 minute in xylene solvents to remove moisture and
air.
* After about a half hour they should come to the rest in a level
representing their density.
* Calibrate glass sphere may be used to determine the actual
density at various levels.
* Prepare the unknown fiber in like manner, place in the
gradient coloumn and note at what level it flots.
So, that’s all about the density test. We can test the various
types of fibers density as the above procedure.
15. Values of the Densities and Specific VolumesValues of the Densities and Specific Volumes
Fibre Density g/cm3) Specific Voloume cm3/g)
Dry 65% RH Dry 65% RH
Cotton (Lumen
filled) 1.55 1.52 0.64 0.66
Viscose Rayon 1.52 1.49 0.66 0.67
Secondary
acetate, triacetate 1.31 1.32 0.76 0.76
Wool 1.30 1.31 0.77 0.76
Silk 1.34 1.34 0.75 0.75
Casein 1.30 1.30 0.77 0.77
Nylon66 & Nylon 6 1.14 1.14 0.88 0.88
Terylene & Other
Polyester 1.39 1.39 0.72 0.72
Orlon & Other
acrylic fibres 1.19 1.19 0.84 0.84
16. Values of the Densities and Specific VolumesValues of the Densities and Specific Volumes
Fibre Density g/cm3) Specific Voloume cm3/g)
Dry 65% RH Dry 65% RH
Polypropylene 0.91 1.09
Polyethylene LD 0.92 1.09
Polyethylene HD 0.95 1.05
Dynel (Mod
acrylic) 1.29 1.29 0.78 0.78
Teklan (Mod
acrylic) 1.34 0.75
Poly Vinyl chloride 1.40 0.71
Poly Tetra Fkuro
Ethylene 2.20 0.45
Glass 2.50 2.50 0.40 0.40
17. DENSITY AND ORDERDENSITY AND ORDER
Density Measurement is commonly used as a means of
estimating the degree of order, or crystallinity of fibres. The
necessary relation is given as equation.
Degree Of Order = ρ - ρam
ρcr - ρam
* The fibre density ρ is measured by the methods discussed.
* The crystal density ρcr, can be calculated from the
dimensions of the unit cell, determined from the x-ray
diffraction pattern and the molecular weight.