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Naturen är ett undersökande arbete i att uttrycka och materialisera en stämning baserat på minnen från en kvällsvandring. Jag gestaltar upplevelsen och materialiserar den i textil. Genom att undersöka möten mellan olika textila tekniker vill jag skapa en kollektion som ger en förnimmelse av min naturupplevelse. Text ur Caroline Ringskog Ferrada-Nolis bok Naturen har varit utgångspunkt vid uppbyggnaden av kollektionen. Resultatet är en dynamisk textilkollektion för hemmiljö som innehåller digitaltryck, ausbrenner jacquardväv och en stickad struktur.Nature is an exploratory work on expressing and materializing a mood based on the memories of a night walk. I portray the experience and materialize it into fabric. By examining the interaction between different textile techniques, I create a collection that gives a perception of my experience of nature. Text from Caroline Ringskog Ferrada-Nolis book Naturen has been the starting point in building up the collection. The result is a dynamic collection of textiles which includes digital printing, ausbrenner, jacquard weaving and a knitted structure. Program: Textildesignutbildningen

Motorcycle dynamics is characterised by the presence of modes of vibration that may become unstable and lead to dangerous conditions. In particular, the weave mode shows large yaw and roll oscillations of the rear frame and out of phase oscillations of the front frame about the steer axis. The presence of the rider influences the modes of vibration, since the mass, stiffness and damping of limbs modify the dynamic properties of the system; moreover, at low frequency the rider can control oscillations. There are few experimental results dealing with the response of the rider in the presence of large oscillations of the motorcycle. This lack is due to the difficulty of carrying out measurements on the road and of reproducing the phenomena in the laboratory. This paper deals with a research programme aimed at measuring the oscillations of the rider's body on a running motorcycle in the presence of weave. First, testing equipment is presented. It includes a special measurement device that is able to measure the relative motion between the rider and the motorcycle. Then the road tests carried out at increasing speeds (from 160 to 210 km/h) are described and discussed. Best-fitting methods are used for identifying the main features of measured vibrations in terms of natural frequencies, damping ratios and modal shapes. The last section deals with the comparison between measured and simulated response of the motorcycle-rider system in weave conditions; good agreement was found.

Almedahls have for some time started to receive more customer complaints about uneven roller blind fabrics or so-called waves over fabric. The waves are a major problem for Almedahls customers since they make it hard to cut the fabric into roller blinds. The company believes that the waves appear due to different process parameters within their finishing line but the company do not yet know how or where. The thesis project strives to find an explanation to what waves over fabric are, why they appear and how they can be reduced. The documentation that Almedahls have made of the problem so far, including photographs and customer complaints reports, was examined. Orders produced from four selected grey-weaves during the last three years was examined and compared to received customer complaints and standard operations lists. No clear relationship was found and weaves with longer process lines did not seem to cause more waves to appear. However, addition of an extra colouring to the standard operations appeared to be more frequently occurring when a standard operations list had been changed.Waves over fabric were at an early stage related to the mechanical properties of the weaves as the weaves are exposed to stresses and strains during the entire production line. In Almedahls’ finishing line the web and the beam tensions and the levelling mechanisms in the stenter frames appeared to be the parameters which especially apply stresses and strains. Tensile tests were performed to examine the mechanical properties of a few of Almedahls grey-weaves and half processed weave. The test results showed that a strain between 11-27 % can be applied before the test samples start to deform while calculations of the amount of strain applied by the stenter frames showed to be much less, between 2.5-3.5 %. The difference in size between the test samples and the weaves must be considered when comparing these results. The small, repeated strains applied by the finishing line may eventually lead to permanent deformation of the weaves and appear as waves. The combination of the web and the beam tensions can also result in a stretch in the bias-direction of the weave which cause deformation in the middle of the weave where waves most often appear.The thermal properties of the same weaves were also tested through DSC, Differential Scanning Calorimetry, tests. The test results showed that the polyester material in the weaves does not melt or deform at the temperatures Almedahls use in their processes. The shrinkage of the grey-weaves during the de-sizing processes was also considered through width measurements. The conclusion was that the structure of the grey-weave influences how much the weave will shrink and the dimension change of the weave may influence the appearance of waves and needs more investigation. Program: Magisterutbildning i textilteknologi

Bu çalışma, 20-21 Nisan 2011 tarihleri arasında Wuhan[Çin]’da düzenlenen 3. World Conference on 3D Fabrics and their Applications’da bildiri olarak sunulmuştur. The paper presents the results of a thorough study of internal structure and mechanical behavior of non-crimp 3D orthogonal woven carbon/epoxy composites. The following parameters and phenomena are investigated: -internal geometry of the reinforcement: shape of the yarns, waviness, dimensions and shape of the cross sections, and fiber volume fraction inside the yarns; -stiffness and strength of the composites; -non-Hookean effects (stiffening of the carbon fibers with increasing strain) -damage initiation and development monitored by means of acoustic emission -crack morphology at different stages of loading studied with X-ray and optical microscopy; -tension-tension fatigue: S-N curves and damage development with increasing number of cycles. TexEng Software Ltd UK Wuhan Text University 3TEX, Inc. (Cary, NC, U.S.A)

This paper proposes new algorithms for the computeraided design and manufacture (CAD/CAM) of 3D woven multi-layer textile structures. Existing commercial CAD/CAM systems are often restricted to the design and manufacture of 2D weaves. Those CAD/CAM systems that do support the design and manufacture of 3D multi-layer weaves are often limited to manual editing of design paper grids on the computer display and weave retrieval from stored archives. This complex design activity is time-consuming, tedious and error-prone and requires considerable experience and skill of a technical weaver. Recent research reported in the literature has addressed some of the shortcomings of commercial 3D multi-layer weave CAD/CAM systems. However, earlier research results have shown the need for further work on weave specification, weave generation, yarn path editing and layer binding. Analysis of 3D multi-layer weaves in this research has led to the design and development of efficient and robust algorithms for the CAD/CAM of 3D woven multi-layer textile structures. The resulting algorithmically generated weave designs can be used as a basis for lifting plans that can be loaded onto looms equipped with electronic shedding mechanisms for the CAM of 3D woven multi-layer textile structures., {"references":["L. Tong, A.P. Mouritz and M.K. Bannister, 3D fibre reinforced polymer\ncomposites, Elsevier Science, 2002.","X. Chen, R.T. Knox, D.F. McKenna and R.R. Mather, \"Automatic\ngeneration of weaves for the CAM of 2D and 3D woven textile\nstructures\", J. Text. Inst., pt. 1, vol. 87, no. 2, pp. 356-370, 1996.","X. Chen and P. Potiyaraj, \"CAD/CAM of orthogonal and angle-interlock\nwoven structures for industrial applications\", Text. Res. J., vol. 69(9),\npp. 648-655, 1999.","X. Chen, Y.L. Ma and H.Zhang, \"CAD/CAM for cellular woven\nstructures\", J. Text. Inst., vol. 95, nos. 1-6, pp. 229-241, 2004.","X. Chen and H. Wang, \"Modelling and computer-aided design of 3D\nhollow woven reinforcement for composites\", J. Text. Inst., pt. 1, vol.\n97, no. 1, pp. 79-87, 2006.","N.G. Koltycheva and S.A. Grishanov, \"A systematic approach towards\nthe design of a multi-layered woven fabric: Modelling the structure of a\nmulti-layered woven fabric\", J. Text. Inst., pt. 1, vol. 97, no. 1, pp. 57-\n69, 2006.","G. Ping and D. Lixin, \"Algorithms for computer-aided construction of\ndouble weaves: application of the kronecker product\", J. Text. Inst., pt.\n1, vol. 90, no. 2, pp. 158-176, 1999.","X. Chen and P. Potiyaraj, \"CAD/CAM for complex woven fabrics part\nII: multi-layer fabrics\", J. Text. Inst., pt. 1, vol. 90, no. 1, pp. 73-90,\n1999.","J.A. Hewitt, D. Brown and R.B. Clarke, \"Modelling, evaluation and\nmanufacture of woven composite materials\", Composites, pt. A 27A, pp.\n295-299, 1996.\n[10] M. Smith and X.Chen. WeaveStudio CAD/CAM software for 3D woven\nstructures, EPSRC funded project, University of Manchester, UK, 2005-\n2008.\n[11] B. Stroustrup, The C++ programming language: 3rd Ed., Addison\nWesley, 1997.\n[12] N. Josuttis, The C++ standard library: A tutorial and reference,\nAddison Wesley, 1999.\n[13] M. Mortenson, Geometric modeling: 3rd Ed., Industrial Press Inc., 2006.\n[14] M.A. Smith and X.Chen, \"CAD and constraint-based geometric\nmodelling algorithms for 2D and 3D woven textile structures\", J. Inf.\nComp. Sci., vol. 3, no. 3, pp. 199-214, 2008"]}

Tez çalışması PES/Vis/Lycra® içerikli atkı elastan dokumalarda doku faktörlerinin kumaşın fiziksel ve mekanik özelliklerine olan etkisinin incelenmesini içermektedir. Doku faktörleri dokunun tipi, atkı numarası ve sıklığı olarak belirlenmiştir. Bu bağlamda iki farklı atkı, yedi farklı doku tipi ve dört farklı atkı sıklığında kumaşlar dokunmuştur. Buna karşılık tespit edilecek kumaş özellikleri yıkama çekmesi (sanfor), sanfor öncesi ve sonrası sıklık, atkıda kısalma ve kıvrım, gramaj, kalınlık, kumaş eni, kopma mukavemeti ve uzaması, yırtılma mukavemeti, elastikiyet ve kalıcı uzama olarak ortaya konulmuştur. Dokuma performansının ve kumaş yapısının çözgü gerilimlerinden önemli ölçüde etkilendiği düşüncesiyle, belirlenen dokuma şartlarında, beş bölgede çözgü gerilimleri ölçülmüştür. Kumaş yapısal parametreleri ile gerilimin fonksiyonel ilgisi ortaya konarak detayları tez içerisinde tartışılmıştır. Çalışma planları çerçevesinde elde edilen verilerin istatistiksel analizleri yapılarak kumaş özelliklerini etkilemede dokuma faktörlerinin önem seviyesi de ayrıca belirlenmiştir. Teze özel çalışmanın asıl hedefini oluşturan husus, elde edilen verilerden hareketle bir dokunun bir birim alanında dokuma faktörlerine bağlı olarak, tanım ve tespiti kolaylıkla yapılabilir bir parametre olarak ?bağlanma noktası sayısı veya diğer bir deyişle birim alandaki ipliklerin kesişim sayısı? ile ölçme ve test etme yoluyla tespit edilen kumaş özellikleri arasındaki anlamlı fonksiyonel ilginin varlığı üzerinde analiz ve inceleme yapılmış ve bu hususta önemli ve başarılı sonuçlara ulaşılmıştır. Yapılan çalışmaların sonuçları detayları ilgili bölümlerde anlatılmıştır. Thesis study contents the investigation of weave parameters on physical and mechanical properties of woven fabrics containing PES/Vis/Lycra® weft elastane yarns. The parameters have been determined as weave type, weft number and density. From this point, the fabrics were woven in seven different pattern constructions with four different weft densities using two different weft in count. The fabric properties to measure have been decided as dimensional stability, sanforization test and fabric shrinkage after washing, weight, density, weft yarn crimping and the width and thickness variations of fabrics. Additionally, fabric breaking and tearing strength, elasticity and extensibility have been subjected to testing in order to evaluate and compare the behaviours of fabrics. Moreover, warp tensions have been measured under running conditions of the loom, considering that the tension variations affect the quality of fabrics and weaving performance or efficiency. Hence, the relationship between the tension and weaving parameters determined has been given on the base of this study. On the other hand, the data obtained was analysed statistically to carry out the importancy of weave parameters on fabric properties and warp tensions. Speciality of the thesis was the investigation and analyzing of the functional relationship between the fabric properties, all mentioned above, which could be measured or tested and the numbers of interlacing points of yarns in a unit of fabric area (i.e. the area of 1 cm2) which could easily be counted or determined for weaving/woven structural parameters. Important and successful evaluations have been drawn out of the study. The overall results with their discussions have been given in the related chapters. 193

In this experimental study, it is investigated comparatively the effect on abrasion resistance of the presence of chenille and flock yarns, as weft yarn in the structure of woven fabrics. Fabrics under study were produced with varying weft densities and weave types. Chenille yarns are produced with different twist levels on a chenille yarn machine. Flock yarns are produced with polyester core yarn covered with adhesive and with polyester pile fibers glued to the core yam. According to the results, fabrics with high weft density and low float length have less mass loss values after abrasion test. The fabrics manufactured with flock type yams have a higher abrasion resistance than the chenille type of yarns Chenille yarns with high twist levels bring about an improvement in abrasion resistance of fabrics.

Can texture embody the idea of a place? Or does a place provide meaning to the textures used to construct it? This thesis seeks to explore the contribution of texture to our understanding of, and relationship with, the built environment. To test this, a mixed use program will be explored in the neighborhood of Mount Vernon Square in Washington, DC. Master of Architecture

The fabric of the city. A folded roof plane. Textile brick. The density of a weave. A fabric's structure. A hem's meter. The selvage. The fringe. Weaving. The connections drawn between textiles and architecture are limitless. Can a building and the processes that occur within it stitch together the holes in a city? The project explores the relationship between weaving and architecture. Can all aspects of the building - from spatial sequences and circulation to structure and skin - be woven? Master of Architecture

In this experimental study, plain fabrics made from 100% cotton ring carded, ring combed and OE rotor spun yarns were produced. The weft yarn count, warp yarn count and fabric sett of the fabrics were constant. The pilling and abrasion resistance of the fabrics were investigated. After that the relationships between yarn characteristics and abrasion resistance and pilling were investigated. Finally the relationships between abrasion resistance and pilling were investigated for every group of fabrics. The results show that the arithmetic means of abrasion resistance and pilling performance have a maximum value in fabrics made from OE rotor spun yarns. The arithmetic means of abrasion resistance and pilling performance have a minimum value infabrics made from ring carded spun yarns. Whereas standard deviations in fabric made from OE rotor spun yarns have a maximum value, standard deviations in fabric made from ring combed spun yarns have a minimum value for both fabric characteristics. The important relationships between yarn hairiness and abrasion resistance and pilling were obtained in all the fabrics. Additionally, the important relationships between abrasion resistance and pilling were obtained for all the fabrics. All correlation coefficients were found as negative. The correlation coefficient of fabrics made from ring combed spun yarns has a maximum value. The correlation coefficient of fabrics made from OE rotor spun yarns has a minimum value without taking into account the fact that it is negative or positive.

This work is about presenting the weave in a new and different context, by bringing textile and glass together. The work is characterized by material and shape experiments with silver and copper weave and hand blown glass. From experiments and sketches, the work has resulted in four sculptures, symbolizing four selected stages in a lifecycle; the birth, the development, the maturity and the death. One important part of the work has been to combine different materials and techniques. Studies of literature, sketching, handweaving and integration of silver and copper weave in the glass have been important methods in the working process. Inspired by the flower, the human being and the universe, a story about the life cycle has taken shape. The paper describes the working process with choices and analyses. It describes the experiments and the making of the sculptures. Uppsatsnivå: C

In this work the interactive evolutionary algorithm for computer creation of harmony between the weave and colours of the fabric is described. Due to special demands and constraints, typical for evolutionary algorithm applied in the design of the fabric, it was necessary to use new and original operators of recombination. The used spectrum of colours is adapted to the creation of the harmony between the weave and colours of the fabric, but the division of the hue, saturation and value part isn't linear and even. It is shown the way of changing pattern of colour for warp and weft using mutation. During the process of changing the pattern of colours for warp and weft, the creation of colours that don't exist in chosen pallet using the described algorithm is prevented. As there are no data about the values of parameters for such algorithm, it was necessary to define new parameters based on extensive empiric investigations done with definite number of persons questioned. This can leads us to the conclusion based on numerous investigations that performing it, the suggested version of evolutionary algorithm can successfully be used in creating the harmony between the weave and colours.

En este texto se presentan las técnicas y procesos del tejido en chambira desde la obtención de la materia prima, hasta la finalización de los tejidos de hamacas y mochilas, pasando por las indicaciones de cómo se teje cada uno e ilustrando los pasos respectivos. No obstante el carácter técnico de este, cada aspecto que lo compone se expone a la luz de las dinámicas presentes en las relaciones entre las personas y los elementos del tejido. Finalmente se reflexiona sobre las formas del tejido yagua comparando la información obtenida de fuentes primarias y fuentes bibliográficas, considerando las diferencias entre los tejidos de los antiguos yaguas y los actuales en cuanto a las técnicas, los motivos representados en ellos, lo patrones de entrelazado de las sogas, entre otros.

Literature does not provide any data about the degree of change of mechanical characteristics of warp and weft threads during weaving process. A precise prediction of woven fabric characteristics is almos impossible. The objective of our research was to assess the influence of constructional parameters on mechanical characteristics of warp and weft threads. 36 referential samples in 9 different weaves were produced from the same threads 36 tex in warp (sized) and weft. Two different warp densities (22 and 29.3 ends/cm) and two different weft densities (15 and 20 picks/cm) were produced. The results of measurements show that density has a significant influence on changes of mechanical characteristics of individual warp and weft threads. The differences between weaves depended also on the fact to which group of samples they belonged. The smallest differences between weaves appeared in the samples with lower density of warp and weft threads, and the biggest differences in the group of samples with the hghest density of warp and weft [1].

To a knot in 3-space, one can associate a sequence of Laurent polynomials, whose $n$th term is the $n$th colored Jones polynomial. The paper is concerned with the asymptotic behavior of the value of the $n$th colored Jones polynomial at $e^{\a/n}$, when $\a$ is a fixed complex number and $n$ tends to infinity. We analyze this asymptotic behavior to all orders in $1/n$ when $\a$ is a sufficiently small complex number. In addition, we give upper bounds for the coefficients and degree of the $n$th colored Jones polynomial, with applications to upper bounds in the Generalized Volume Conjecture. Work of Agol-Dunfield-Storm-W.Thurston implies that our bounds are asymptotically optimal. Moreover, we give results for the Generalized Volume Conjecture when $\a$ is near $2 \pi i$. Our proofs use crucially the cyclotomic expansion of the colored Jones function, due to Habiro., Comment: 31 pages, 13 figures

U radu je ispitana mogućnost stvaranja sklada veza i boja tkanine na računalu pomoću interaktivnog evolucijskog algoritma. Polazna je pretpostavka da je uporabom prikladne verzije evolucijskog algoritma moguće poboljšati i djelomično automatizirati kreativni postupak stvaranja uzorka tkanine (sklada veza i boja tkanine). Za razliku od mogućeg pristupa rješavanju ovog zadatka, primjenom znanja ljudskih eksperata (ekspertnim sustavom) ovdje opisani sustav rješava zadatak uz minimalnu uporabu pravila i baze znanja te tako proširuje područje pretraživanja uzoraka tkanine. Pri praktičnoj izvedbi sustava nastojalo se, pomoću ispitanika, ocijeniti estetska privlačnost uzoraka te tako omogućiti uporabu sustava i osobama koje nisu stručne u području tekstilne tehnologije. Ispitanici procjenjuju uzorke (sklad veza i boja tkanine), koji su stvoreni na računalu i prikazani na zaslonu ekrana, ocjenama. Ocjene uzorka koje daju ispitanici su subjektivne procjene, tako da je zbog toga izabran interaktivni evolucijski algoritam za stvaranje sklada veza i boja tkanine. Na temelju ocjena uzorka, koje ujedno predstavljaju i primjerenost, provodi se postupak izbora jedinki koje se koriste u stvaranju novih jedinki pomoću rekombinacije. Pretpostavlja se da će iz generacije u generaciju interaktivnog evolucijskog algoritma aritmetička sredina primjerenosti i najbolja primjerenost uzoraka stvorenih pomoću algoritma biti veća. Pomoću programskog alata MATLAB izrađen je računalni program za stvaranje sklada veza i boja tkanine. U radu je prikazana struktura i parametri algoritma za stvaranje sklada veza i boja tkanine. Objašnjen je način prikaza populacije, jedinke, veza, jedinice veza, redoslijeda boja osnove i potke u algoritmu, postupak izbora u algoritmu, način promjene redoslijeda boja osnove i potke te način promjene jedinice veza. Parametri interaktivnog evolucijskog algoritma podešeni su na temelju iskustva i odgovora ispitanika. Prikazan je način ispitivanja algoritma te analiza rezultata ispitanika koji su dobiveni na temelju korištenja programa. Na temelju ispitivanja, analize rezultata i odgovora izrađene su nove verzije programa za stvaranje sklada veza i boja tkanine temeljenih na interaktivnom evolucijskom algoritmu. One su ispitivane i međusobno uspoređivane kako bi se utvrdila mogućnost korištenja interaktivnog evolucijskog algoritma za stvaranje sklada veza i boja tkanine. Istraživanje je pokazalo primjerenost korištenja interaktivnog evolucijskog algoritma, stoga se pristupilo utvrđivanju najprikladnije verzije algoritma. Ispitano je 6 verzija algoritma, analizirani su i prikazani rezultati. Napravljena je njihova međusobna usporedba kao i usporedba s testnim generatorom uzoraka (slučajno generirani uzorci). Na temelju ispitivanja i analize rezultata može se zaključiti da je potvrđena polazna pretpostavka o uspješnoj primjenjivosti interaktivnog evolucijskog algoritma za stvaranje sklada veza i boja tkanine. Na kraju rada opisana je daljnja mogućnost unaprjeđenja, poboljšanja i razvoja opisanih algoritama. U osnovnom obliku ispitane su neke mogućnosti poboljšanja algoritma opisanih u zaključku. Prikazani su i analizirani rezultati tih ispitivanja. This paper examines the possibility of creating harmony between the weave and colours of the fabric on the computer using the interactive evolutionary algorithm. The starting assumption is that it is possible through the use of the evolutionary algorithm to improve and partially automatize the creative procedure of the creation of fabric pattern (harmony between the weave and colours of the fabric). In the contrast to the possible approach to solving this task, through the application of the knowledge of human experts (expert system) the system described here solves the problem with the minimal use of rules and knowledge base and so it expands the area of fabric pattern searching. With the practical realization of the system the goal was, with the help of examinees, to evaluate the aesthetic appeal of the patterns and so making it possible for the persons who are not experts in the area of textile technology to use the system. The examinees evaluate the patterns (harmony between the weave and colours of the fabric), which are created in the computer and shown on the screen, using grades. Pattern grades provided by the users are subjective assessments; therefore an interactive evolutionary algorithm was selected to harmonize the weave and the colour of the fabric. Based on the pattern grades, which at the same time represent the fitness, a procedure of selection of the individuals which are used to create new individuals through recombination is conducted. It is assumed that the average value of the fitness and the best fitness of the patterns created through the algorithm will increase from generation to generation of the interactive evolutionary algorithm. Using the MATLAB program tool a computer program for creating the harmony of weave and the colour of the fabric has been created. The paper shows the structure and the parameters of the algorithm for harmonizing between the weave and the colours of the fabric. Explanations have been given concerning the way of displaying the population, individual, weave, weave unit, the sequence of warp and weft colours in the algorithm, the selection procedure of the algorithm, manner of changing the sequence of warp and weft colours and the manner of changing the weave unit. The parameters of the interactive evolutionary algorithm have been adjusted according to experience and answers acquired by the examinees. The manner of the testing of the algorithm and the analysis of the results provided by the examinees based on the use of the program are shown. Based on the examination, result analysis and answers, new versions of the program have been created to harmonize between the weave and colours of the fabric based on the interactive evolutionary algorithm. These were tested and intercompared in order to establish the possibility of the use of interactive evolutionary algorithm to harmonize between the weave and colours of the fabric. The research has shown the appropriateness of the use of the interactive evolutionary algorithm; therefore next step was establishing the most appropriate version of the algorithm. Six versions of the algorithm have been tested, with results analyzed and shown. Their intercomparison and the comparison with the test pattern generator (randomly generated patterns) have been conducted. Based on the research and result analysis it may be concluded that the starting assumption on the successful applicability of the interactive evolutionary algorithm for creating the harmony between the weave and colours of the fabric has been confirmed. At the end of the paper there is an elaboration on the possibility of further advancements, improvements and developments of described algorithms. In the basic form certain possibilities for improving the algorithms described in the conclusion have been tested. Results of these tests have been shown and analyzed.

In this study, we have examined the effect of chenille yarn properties, pile length, twisting rate, and weaving construction on the abrasion resistance of upholstery fabrics. different acrylic chenille yarns have been produced at three different twist levels with 0.7, 0.8 and 1.0 mm callipers. These yarns were then used in three different weaving constructions as weft yarn. All the samples were tested to observe abrasion resistance on the Martindale Abrasion Tester. The results indicate that twist levels, pile lengths, and weaving constructions have significant effect on the abrasion resistance of upholstery fabrics.

Fabric design has always been a matter of inspiration, depending mostly upon man's ingenuity and creativity. The authors suggest that creation of fabric patterns using evolution algorithms, which can not only help in improving design created by man, but also make the procedure semi‐automatic, meaning much less dependent upon the designer himself/herself. Evolution algorithm based software offers a wide range of fabric patterns and is also able to create new ones based on the user's choice. The procedure can also be of considerable help to professional designers, as it can offer patterns they would not or could not create themselves. The system described is inexpensive and can be used on IBM compatible personal computers. It is user‐friendly and can be implemented with no previous preparation on the part of the user. The results of preliminary investigations suggest a practical applicability of the software.

Fabric design has always been a matter of inspiration, depending mostly upon man's ingenuity and creativity. The authors suggest creation of fabric patterns using evolution algorithms, which can not only help in improving design created by man, but also make the procedure semi-automatic, meaning much less dependent upon the designer himself/herself. Evolution algorithm based software offers a wide range of fabric patterns and is also able to create new ones based on the user's choice. The procedure can also be of considerable help to professional designers, as it can offer patterns they would not or could not create themselves. The system described is inexpensive and can be used on IBM compatible personal computers. It is user-friendly and can be implemented with no previous preparation on the part of the user. The results of preliminary investigations suggest a practical applicability of the software.

A fabric is a textile construction in which two thread systems – warp and weft threads – interlace at right angle. The way of threads interlacing, i.e. the fabric weave, is the most important constructional parameter besides the threads density and count. Constructional parameters significantly affect the look, mechanical and physical, permeability and other properties of a fabric, and consequently the applicability of such fabric. In the experimental part of our research, the samples of fabrics are woven in four different weaves and with three different weft densities. The breaking force and the breaking elongation are measured and the influence of varying constructional parameters analyzed.

Fabric design has always been a matter of inspiration, depending mostly upon mans ingenuity and creativity. The authors suggest creation of fabric patterns using evolution algorithms, which can not only help in improving design created by man, but also make the procedure semi-automatic, meaning much less dependent upon the designer himself/herself. Evolution algorithm based software offers wide range of fabric patterns and is also able to create new ones based on the users choice. The procedure can also be of considerable help to proffesional designers as it can be offered patterns they would not or could not create themselves. The system described is inexpensive and can be used on IBM compatibile personal computers. It is user-friendly and can be implemented with no previous preparation on the part of the user.

This paper deals with the stability analysis of a novel four wheeled tilting motorcycle. This new kind of vehicle is equipped with two front steering wheels and two rear wheels; the front and rear suspension mechanisms allow the scooter to roll freely as a standard motorcycle. An analytical model of the vehicle with locked suspensions, rigid and lenticular tires was developed in order to study the stability of the system in straight running and to carry out a modal analysis focusing on the main normal modes. The frame and all the vehicle components were considered as rigid bodies, the driver was considered fixed to the frame and the tires behavior was described by a linear function of the camber and side-slip angles. The action of the driver on the handlebar was not taken into account, considering the vehicle running in straight without any control system. The stability analysis shows that the eigenmodes of the four-wheeler have several common features with the capsize, weave, wobble and rear wobble modes which characterize the dynamics of two and three wheeled motorcycles. A sensitivity analysis showing the influence of the front trail on stability and the vehicle eigenmodes is presented. A graphical and intuitive representation of the eigenvectors is also given.