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Relationship Between Tensile Strength of Yarn and Woven Fabric

Thesis Info

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Author

Malik, Zulfiqar Ali

Program

PhD

Institute

Mehran University of Engineering and Technology

City

Jamshoro

Province

Sindh

Country

Pakistan

Thesis Completing Year

2011

Thesis Completion Status

Completed

Subject

Applied Sciences

Language

English

Link

http://prr.hec.gov.pk/jspui/bitstream/123456789/2582/1/2609S.pdf

Added

2021-02-17 19:49:13

Modified

2024-03-24 20:25:49

ARI ID

1676727076410

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A detailed experimental work was carried out to find the relationship between the tensile strength of woven fabrics and the constituent yarns. One thousand and eighty fabric samples were constructed on a projectile weaving machine from 100 % cotton and polyester/cotton yarns having a blend ratio of 52:48 with yarn linear densities of 20, 25, 30 and 15, 20, 25 tex respectively. Tensile strength and other quality parameters of fabric samples and constituent yarns were measured as per standard test methods. The obtained values were analyzed to find the effect of yarn material, yarn linear density, ‘warp and filling count’ and design on the tensile strength of fabric. The selected parameters of yarn and fabric were found to have the significant effect on the tensile strength of fabric. The manufactured samples were divided into four groups according to the yarn material used in warp and weft directions. Multiple linear regression analysis was carried out by using MINITAB software to develop the relationship in both warp and weft directions for each group as well as generalized relationship for all of the fabric samples. Statistical adequacy analysis and validation of the developed relationships show a strong ability and accuracy to predict the fabric tensile strength from yarn properties and fabric construction and to determine the yarn tensile strength for a predefined tensile strength of fabric. The warp density and warp yarn strength were found to be the most dominant parameters in case of warp-way fabric strength where as the weft density and weft yarn strength were found as the most prominent parameters in case of weft-way fabric strength. Contribution of selected parameters relative to each other for fabric tensile strength was also investigated and presented in the form of a pie diagram. The developed relationships can be used accurately within the specified limits of selected variables.
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6 بولیاں

بولیاں

 

                پنجابی لوک گیتاں دی اک قسم بولیاں اے بولیاں جمع دا صیغہ اے۔ جیہدا واحد بولی اے تے جیدے کئی معنی نیں بولی دا لفظ زبان دے معنیاں وچ ورتیاں جاندا اے بولی پنجابی شاعری دی اوس قسم نوں کہندے نیں جیہدا صرف اکو مصرعہ ہوندا اے بولی اک مصرعہ ہون پاروں ردیف قافیہ نئیں ہوندا بعض کتاباں وچ بولی نوں دو مصرعے وچ ہیٹھ اُپر لکھیا جاندا اے انج لکھن وچ ہرج تے کوئی نئیں پر ویکھن والیاں نوں بھلیکھا پیندا اے کہ بولی دو مصرعیاں نال بن دی اے بھانویں اوہناں دویاں مصرعیاں وچ ردیف قافیہ نئیں ورتیا ہوندا۔

                ذرا ساہ لین نوں روک کے پڑھن نوں پنجابی وچ ورام آکھدے نیں چھوٹے مصرعیاں وچ ورام دی لوڑ نئیں پیندی پروڈے تے لمبے مصرعیاں وچ دو، دو رام وی آجاندے نیں ایس لئی بولی دے مصرعے نوں جیہڑا لماں وی ہوندا ایں اک ورام نال پڑھدے نیں جہناں نے ایس بولی نوں دو مصرعیاں وچ بنا دتا ایں اوہناں نے ورام نوں صحیح نہیں ورتیا۔

                ایہہ مثال ویکھو۔ بولی اے:

Classical Works on Islamic Political Order: Critical Evaluation of the Methodology of the Modern Scholars

As Muslim scholarship generally treated with the issues relating to rebellion in the manuals of creed, Western scholars and many modern Muslim scholars generally overlooked them. Moreover, when some of them focused on manuals of law-proper where the rules for regulating the conduct of hostilities during rebellion are elaborated, they pick and choose between the views of the jurists belonging to various schools presuming that jurists of various schools followed a common legal theory. The present paper after critically evaluating the methodology of these scholars concludes that every school of law represents a distinct and internally coherent legal theory and as scuh mixing the views of the various schools leads to analytical inconsistency. Hence, it suggests that scholars woking on the legality of rebellion from the perspective of Islamic law should focus on proper legal sources and should adopt a principle-based approach instead of mixing the views of the various schools which are founded on different, sometimes, conficting legal principles.

Energy Policy for Pakistan Energy Planning Till 2050

Energy specialists no longer have to acquaint the public with the existence of energy problem in Pakistan. Symptoms of our increasingly dependences of dwindling fuel resources have emerged sometimes slowly and gently, sometimes suddenly and painfully. We are all aware of the forms in which we have experience them in our own life and we are becoming more and more aware of the ways in which they affect others today. Industrialization, improvement of living standards and population growth are leading to rapidly increasing energy consumption in developing countries as well as Pakistan. Pakistan’s economy run largely on fossil fuels (coal, natural gas and oil). If energy problem has arisen in fairly static Pakistan, it might have been possible to solve it in time by reducing the amount of energy used and by gradually substituting new energy sources for oil. Oil demand behavior is more complex. Oil products can be rationed or domestic energy production can affect oil demand. The nature of energy problem is manifold, how we exploit or conserve the resources available to us today, how vigorously we develop new technologies and how carefully we contain their potentials for environmental damage, all determines the range of opportunities left to future generation. The solution is then to develop an energy system that has no or minimum environmental, economic and societal impacts, which we refer to as “green energy”. In principle energy system that has reduced or minimal adverse impact might be considered as “greener” energy. The definition of green energy implies that green energy as a long-term objective will provide an important attribute for sustainable development. This is because attaining sustainable development requires the use of energy resources and technologies that do not have adverse environmental, economic and social impacts. Clearly single energy source such as fossil fuels are finite and thus lack the characteristic needed for sustainability while others such as renewable energy sources are sustainable over relatively long term. Pakistan is a country with a large population and rapidly growing economy. It has huge energy needs. The country is historically a net importer of energy and confronting serious electricity shortages. With the upward spiral of international fossil fuel prices it’s high time to initiate a sustainable long term transition towards the indigenous, clean and abundant resource of green energy. The considerable potential of this rich resource is not harnessed properly and it is yet to tap. Most of the renewable energy in Pakistan comes from hydroelectricity in the past. The two other potentially strong renewable resources regarding Pakistan are solar and wind.