Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 18 of 18 for “"Crimp"”.
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Wrinkling behaviour of biaxial non-crimp fabrics during preforming
… to characterise the wrinkling behaviour of non-crimp fabrics (NCFs) as well as to investigate how the wrinkling severity is affected by the tool geometry. These aims are achieved through both experimental and numerical approaches. Firstly, experimental forming tests are conducted to characterise …
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Numerical Constitutive Models of Woven and Braided Textile Structural Composites
… shape of the yarn are derived for large crimp angles. It is shown that the maximum crimp angle is limited to forty-five degrees, and that limits on the ratio of the length of the undulation portion of the path to the width of the unit cell impose constraints on the fiber volume fraction …
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Biomimetic composite structure to simulate tendon performance
… were used as the straight fiber reinforcement A crimped Nylon 6 fiber was obtained in order to simulate the crimp in natural tendon. The composites were manufactured with the polymer matrix in solution form. A solution of the polyurethane and tetrahydrofuran was used to coat the fibers using a …
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Testing the use of port biological baseline surveys to support relevant marine alien species management applications in Africa
… Centre for Research on Introduced Marine Pests (CRIMP) in Australia, which has become the recommended approach at the IMO for developing countries tackling this issue. This study applies the CRIMP methodology for conducting comprehensive baseline surveys in three key African ports to examine the …
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Identification of quantitative second-harmonic generation imaging metrics for collagenous tissue
… to quantitatively categorize collagen fiber crimping, examine collagen fiber damage, growth and where possible, find correlations of the collagen structure with the mechanical properties of the tissue. In an initial study, I quantitatively characterized crimp patterns occurring in ligament …
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A study on wool characters
… was slightly associated with clean yield; (c) Crimp was rather important in wool uniformity than in clean yield; (d) Fineness is extremely important in wool quality instead of clean yield. Fleeces from aged sheep over four years old were lighter in clean yield than fleeces from young sheep. …
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A methodology for the automation of dry fabric layup for fiber reinforced polymer composite manufacturing
… method known as shearing for the layup of Non-Crimp Fabric (NCF) plies for 2-dimensional and 3-dimensional composite components. This research includes the development of a machine capable of imparting shear on NCF plies. Results are presented with an equation for calculating machine settings …
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Tension Control In Narrow Fabric Weaving
… like yarn tension, yarn friction, yarn crimp and yarn damage. The yarn tensioning devices analysed were warp beams braked by a hanging cord with weights. The braking force was increased by increasing the weights. This is typical of industrial machinery. Calculations show that, as the …
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A study of two dimensional braided composites
… composite is developed. The fiber volume and crimp angle are evaluated by this model and are compared with experimental results. The maximum fiber volume fraction is also obtained. Effective stiffness of 2-D braided composite is obtained in a close form by the analysis of elastic deformation …
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Properties and characteristics of polypropylene fibers spun by the phase-separation technique
… exhibited good hand, bulk, tangling, and self-crimping characteristics. Photographs of four of the fiber samples were made to show the tangling and crimp qualities.
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THE INFLUENCE OF YARN PROPERTIES ON THE SIZE SENSITIVITY OF PANTYHOSE
… figure correlates reasonably well with the Crimp Rigidity of the various yarns. The new technique is considered a flexible one which can be used to test, without large wearer-panels, the size sensitivity of a particular yarn.
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Queer aesthetics of empathy and gothicness in contemporary sculpture
… sources (conspicuously via Stokes, Fried, Crimp, Barthes, Benjamin, and Eisenstein), reveal recursive reference to notions of modelling, absorption, camp, sentimentality, embarrassment, and popular culture. Prefigured by the past, such referents arouse a queer temporality. Methodologically …
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The Manufacturing and Ballistic Testing of Tri-axial Quasi Three Dimensional Woven Composites Layered in Polyurea
… is done without utilizing discrete ply or large crimp angles. The geometry of the weave allows for greater energy absorption compared to a standard weave. The result is a self-sealing coating that can be applied to railcar tankers or stationary tanks carrying toxic chemicals without increasing …
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Reading Material: Literary, Picturing, and Representational Strategies in the work of Carol Laing, Sue Lloyd, Andy Fabo, Sharon Switzer, Jane Buyers, and Allyson Clay
… in works of art, not sources and origins, Crimp asserts that processes of quotation, excerption, framing, and staging constitute the strategies of the work in the 1977 exhibition Pictures he organized at Artists Space, New York City (87). The next chapter, Semiotic Vocabularies, employs a …
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The Connection of Composition, Structure, and Dynamic Processes to Tendon Mechanics: Structure-Function Relationships in Collagen V Deficient Tendons
… of dynamic responses, specifically collagen uncrimping, re-alignment, sliding and deformation, within the matrix. To date, a complete understanding of the hierarchical structure-function relationships in tendon is lacking. Therefore, the overall goal of this thesis was to measure tendon …
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The construction of skill in contemporary experimental theatre
… Chapters 1 and 2 compare the plays of Martin Crimp and Tim Crouch. Taken together, these chapters reveal how each author negotiates between two different understandings of playwriting within contemporary British dramaturgy: as a distinctive craft producing material with and on which other …
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Analysis of the effects of sire and age on wool quality traits in Romney ewes
Higher prices for sheep meat compared to strong wool have caused dual purpose sheep breeding objectives to align with meat production. The resulting lack of focus on wool breeding has resulted in reduction of the quality and value of strong wool. This dissertation examines the results of a wool …