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Fabric defect detection by wavelet transform and neural networkLee, Tin-chi., 李天賜. January 2004 (has links)
published_or_final_version / abstract / toc / Electrical and Electronic Engineering / Master / Master of Philosophy
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The wearing and appearance qualities of 50/50 polyester/cotton, durable press, elementary age boys' shirts under home laundry conditionsPortouw, Shirley J. January 1971 (has links)
No description available.
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Characterization of voids in plain-woven nylon fabric using diffusion NMR, porometry, and optical microscopyMillikan, Toni Rae January 2002 (has links)
No description available.
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Automated defect detection for textile fabrics using Gabor wavelet networksPeng, Pai, 彭湃 January 2006 (has links)
published_or_final_version / abstract / Industrial and Manufacturing Systems Engineering / Doctoral / Doctor of Philosophy
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A comparative evaluation of drying techniques of dyed 65/35 polyester/cotton blend fabric with a durable press finishMcPherson, Bonnie Jean, 1946- January 1972 (has links)
No description available.
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A comparative evaluation of performance of 65/35 polyester/cotton blend shirts with permanent press and soil release finishes when subjected to wear and drying treatmentsErickson, Nancy Cameron, 1947- January 1971 (has links)
No description available.
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Die versoenbaarheid van katoen/nylon- en katoen/poliester- skeringgebreide terriestofhanddoeke met industriele versorgingsproseduresDe Bruin, Riette 10 1900 (has links)
Thesis (MVerbruikerswet)--University of Stellenbosch, 2005. / ENGLISH ABSTRACT: The aim of the study was to investigate the compatibility of cotton/nylon and cotton/polyester warpknit
terry towelling fabrics with industrial laundering procedures. The literature review focused, on
the one hand, on the manufacture, finishing and structure of warp-knit terry towelling fabrics as well
as on the physical structure, chemical nature and characteristics of the textile fibres used in the
manufacturing of the towelling. On the other hand, a full exposition of the industrial laundering
processes is provided, with specific reference to aspects that can have an effect on the towelling
fabrics during the wash and tumble-drying cycles.
Chapters Three and Four are reports on two research projects that can each be read
independently. The aim of the first project was to determine the effect of industrial laundering
procedures on the durability of cotton warp-knit terry towelling fabrics with a synthetic base
structure. The tensile strength of cotton warp-knit terry towelling samples with a synthetic base
structure was determined in the warp and weft directions and after 10, 20, 30, 40, and 50 wash
cycles as well as wash and tumble-drying cycles. The tensile strengths in the warp direction of the
washed terry towelling samples decreased significantly (p < 0.001) after 50 wash cycles. In
contrast to this, the tensile strength in the weft direction increased, although not significantly
(p > 0.05). As far as the comparison of the effect of industrial wash and wash and tumble-drying
cycles is concerned, the tensile strengths in the warp direction of the towelling samples that were
washed and washed/tumble-dried, were significantly lower (p < 0.001) after 20 and after 50
laundering cycles. As far as the tensile strengths in the weft direction were concerned, a similar
pattern as with the wash and wash/tumble-drying processes, occurred. The tensile strengths
initially increased and then gradually decreased. Furthermore, the tumble-drying process had
greater damaging effects after 40 laundering cycles (p = 0.043) and especially after 50 laundering
cycles (p < 0.0001).
The aim of the second research project was to compare the durability of cotton warp-knit terry
towelling fabrics with a nylon base structure with cotton warp-knit terry towelling fabrics with a
polyester base structure after they had been subjected to industrial laundering processes. It was
first established whether cotton/nylon and cotton/polyester warp-knit terry towelling fabrics are
comparable. Secondly, the durability of cotton/nylon and cotton/polyester terry towelling fabrics
was compared by determining the tensile strengths of the samples in the warp direction after they
have been subjected to 50 industrial wash as well as wash and tumble-drying cycles. The two
groups of untreated samples were regarded as similar on the basis of the percentage of fibre
composition, knit fabric structure, knit density, mass and tensile strength. After 50 industrial wash
cycles the tensile strengths of the cotton/nylon and cotton/polyester warp-knit terry towelling
samples decreased significantly (p < 0.05). But there was no significant difference (p > 0.05) between the tensile strengths of the cotton/nylon and the cotton/polyester terry towelling samples
after 50 washing cycles. There was a highly significant difference (p < 0.001) between the tensile
strengths of the cotton/nylon and the cotton/polyester terry towelling samples after 50 wash and
tumble-drying cycles. The tensile strength of the cotton/polyester terry towelling samples remained
practically unchanged after the 50 wash/tumble-drying cycles, with the tensile strength of the
cotton/nylon terry towelling samples decreased significantly (p < 0.001). / AFRIKAANSE OPSOMMING: Die doel van die studie was om ondersoek in te stel na die versoenbaarheid van katoen/nylon- en
katoen/poliëster- skeringgebreide terriestofhanddoeke met industriële versorgingsprosedures. In
die literatuuroorsig is daar enersyds gefokus op die vervaardiging, afwerking en struktuur van
skeringgebreide terriehanddoekstowwe asook op die fisiese struktuur, chemiese aard en
eienskappe van die tekstielvesels waarvan die handdoeke vervaardig is. Andersyds is ’n volledige
uiteensetting van industriële versorgingsprosedures gegee, met spesifieke verwysing na aspekte
wat tydens die was- en tuimeldrogingsiklusse ’n uitwerking op die handdoekstowwe kan hê.
Hoofstukke drie en vier is opgeskryf as twee navorsingsprojekte wat elk ‘n geheel vorm. Die doel
van die eerste projek was om die effek van industriële versorgingsprosedures op die
duursaamheid van katoen skeringgebreide terriestofhanddoeke met ‘n sintetiese basisstruktuur te
bepaal. Die breeksterkte van katoen skeringgebreide terriestofmonsters met ’n sintetiese
basisstruktuur is in die skering- en inslagrigtings tydens en na afloop van 10, 20, 30, 40, en 50
was- asook was- en tuimeldrogingsiklusse bepaal. Die breeksterktes in die skeringrigting van die
gewaste terriestofmonsters het betekenisvol afgeneem (p < 0.001) na 50 wassiklusse. In
teenstelling hiermee het die breeksterktes in die inslagrigting toegeneem, hoewel nie betekenisvol
nie (p > 0.05). Wat die vergelyking van die effek van industriële was- en was en
tuimeldrogingsiklusse betref, is die breeksterktes in die skeringrigting van die handdoekmonsters
wat gewas en gewas/getuimeldroog is, beduidend laer (p < 0.001) na 20 en na 50
versorgingsiklusse. Wat die breeksterktes in die inslagrigting betref het ‘n soortgelyke patroon by
die was- en was/tuimeldrogingprosesse voorgekom. Die breeksterktes neem aanvanklik toe en
daarna geleidelik af. Verder het die tuimeldrogingsproses na 40 versorgingsiklusse (p = 0.043) en
veral na 50 versorgingsiklusse (p < 0.0001) ’n groter skadelike effek getoon.
Die doel van die tweede navorsingsprojek was om die duursaamheid van katoen skeringgebreide
terriestowwe met ’n nylon basisstruktuur te vergelyk met katoen skeringgebreide terriestowwe met
’n poliëster basisstruktuur nadat dit aan industriële versorgingsprosedures blootgestel is. Daar is
eerstens vasgestel of katoen/nylon en katoen/poliëster terriehanddoekstowwe vergelykbaar is.
Tweedens is die duursaamheid van katoen/nylon en katoen/poliëster terriestowwe vergelyk deur
die breeksterktes van die monsters in die skeringrigting te bepaal nadat dit aan 50 industriële wasasook
was- en tuimeldrogingsiklusse blootgestel is. Die twee groepe onbehandelde monsters is
as soortgelyk beskou op grond van die persentasie veselsamestelling, breistofstruktuur,
breidigtheid, massa en breeksterkte. Na 50 industriële wassiklusse het die breeksterktes van die
katoen/nylon en katoen/poliëster skeringgebreide terriestofmonsters betekenisvol (p < 0.05)
afgeneem. Daar was egter nie ’n betekenisvolle verskil (p > 0.05) tussen die breeksterktes van die katoen/nylon en katoen/poliëster terriestofmonsters na 50 wassiklusse nie. Daar was ’n hoogs
betekenisvolle verskil (p < 0.001) tussen die breeksterktes van die katoen/nylon en
katoen/poliëster terriestofmonsters na die 50 was/tuimeldrogingsiklusse. Die breeksterkte van die
katoen/poliëster terriestofmonsters het na die 50 was/tuimeldrogingsiklusse feitlik onveranderd
gebly terwyl die breeksterkte van die katoen/nylon terriestofmonsters hoogs betekenisvol
(p < 0.001) afgeneem het.
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South African National Accreditation System accreditation : a case study of a university of technology textile testing laboratoryJaftha, Desiree Virginia January 2008 (has links)
Thesis (MTech (Quality))Cape Peninsula University of Technology, Cape Town, 2008. / The South African Government provides support to the clothing and textile
industry by making funding available through programs in the Department of
Science and Technology, such as the Tshumisano Technology Stations Program.
The Technology Stations Program in particular supports a Technology Station in
Clothing and Textiles (TSCT) at the Cape Peninsula University of Technology
(CPUT), serving the needs for technology support and skills upgrading of the
industry in the Western Cape, and in some instances, nationally.
The TSCT testing laboratory provides testing services to small medium and large
companies in South Africa at a reduced cost. The laboratory emphasises that
customers should have fabrics tested before production commences. In this
regard, the company will know the quality of the fabric or garment being
purchased or manufactured.
The laboratory technicians and assistants undergo a 'Woolworths' certification
process on their test methods on an annual basis. The Woolworths certification is
customer based. The laboratory is faced on a daily bases with the problem that
more and more of their customers request that the facility should seek higher
'accreditation', as opposed to the current 'certification' it currently holds. The
TSCT testing laboratory in addition has a responsibility to satisfy all of its
customer certification and accreditation needs. Against this background, the
management of the CPUT TSCT testing laboratory is now seeking accreditation
from the South African National Accreditation System (SANAS) to widen the
spectrum of its testing abilities.
The primary research objectives of this dissertation are:
To determine what the requirements are for SANAS accreditation by the
CPUT TSCT testing laboratory.
To determine if the CPUT TSCT testing laboratory is subject to a forced
intervention for SANAS accreditation.
To determine the criteria required for the CPUT TSCT testing laboratory
accreditation.
To determine the benefits that could be gleaned from this accreditation.
To determine the effectiveness of the laboratory system, with regard to the fact
that in addition to testing, the laboratory is used for teaching and learning.
Descriptive research will serve as the research type, as it will describe an existing
phenomena taking place. The research will be theoretical in nature and conducted
in terms of both positivistic and phenomenological paradigms. Case study
research will serve as research method. Data collection for the proposed research
will be conducted using questionnaires. The CPUT Clothing and Textile
Technology Department will serve as sampling frame, while the sample of
respondents will be drawn on the basis of probability sampling. The sample will
include lecturing staff, students, industry testing customers, textile test laboratory
technicians, administration and support staff, all of whom are directly involved with the operation or make use of the laboratory facilities.
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